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WO2025080615A1 - Système de capteur d'écoulement - Google Patents

Système de capteur d'écoulement Download PDF

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Publication number
WO2025080615A1
WO2025080615A1 PCT/US2024/050429 US2024050429W WO2025080615A1 WO 2025080615 A1 WO2025080615 A1 WO 2025080615A1 US 2024050429 W US2024050429 W US 2024050429W WO 2025080615 A1 WO2025080615 A1 WO 2025080615A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow sensor
pair
electrical contact
electrical
electrical contacts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2024/050429
Other languages
English (en)
Inventor
Kaushal Verma
Matthew Lee KOLB
Gary Ellerbusch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Becton Dickinson and Co
Original Assignee
Becton Dickinson and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Becton Dickinson and Co filed Critical Becton Dickinson and Co
Publication of WO2025080615A1 publication Critical patent/WO2025080615A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G01F15/061—Indicating or recording devices for remote indication
    • G01F15/063—Indicating or recording devices for remote indication using electrical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/14—Casings, e.g. of special material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/18—Supports or connecting means for meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/005—Valves

Definitions

  • the present disclosure relates generally to a flow sensor system and, in some nonlimiting embodiments or aspects, to a flow sensor system for sensing a flow of a fluidic medicament.
  • the at least one sensor includes at least one piezoelectric crystal, and wherein the flow sensor electrical contact is in direct contact with the piezoelectric crystal of the at least one sensor.
  • the at least one sensor includes a first piezo element at an upstream position of the flow tube and a second piezo element at a downstream position of the flow tube, wherein the first piezo element includes a first piezoelectric crystal, and wherein the second piezo element includes a second piezoelectric crystal, wherein the first piezoelectric crystal is between the first electrical contact and the second electrical contact of the first pair of electrical contacts such that a first face of the first piezoelectric crystal is in direct contact with the first electrical contact of the first pair of electrical contacts and a second face of the first piezoelectric crystal opposite the first face of the first piezoelectric crystal is in direct contact with the second electrical contact of the first pair of electrical contacts, wherein the second piezoelectric crystal is between the first electrical contact and the second electrical contact of the second pair of electrical contacts such that a first face of the second piezoelectric crystal is in direct contact with the first electrical contact of the second pair of electrical contacts and a second face of the second
  • the opening in the flow sensor housing includes a first pair of openings and a second pair of openings, wherein each of the first pair of openings and the second pair of openings includes a first opening and a second opening spaced apart from each other along the flow sensor housing, wherein the second end portion including the second leaf spring including the rolled end of the first electrical contact and the second electrical contact of the first pair of electrical contacts respectively extend through the first opening and the second opening of the first pair of openings, wherein the second end portion including the second leaf spring including the rolled end of the first electrical contact and the second electrical contact of the second pair of electrical contacts respectively extend through the first opening and the second opening of the second pair of openings, wherein the middle portion of each of the first electrical contact and the second electrical contact of the first pair of electrical contacts is located within the flow sensor housing adjacent an inner surface of the flow sensor housing, wherein the middle portion of each of the first electrical contact and the second electrical contact of the second pair of electrical contacts is located within the flow sensor housing adjacent the inner surface
  • each of the first electrical contact and the second electrical contact of at least one of the first pair of electrical contacts and the second pair of electrical contacts includes: a middle portion that extends between a first end portion and a second end portion, wherein the first end portion includes a double cantilevered spring, wherein a first end of the double cantilevered spring is connected to the middle portion, wherein a second end of the double cantilevered spring opposite the first end includes at least one first lance extension and a first leaf spring, wherein the second end portion includes a second leaf spring, wherein a first end of the second leaf spring is connected the middle portion, and wherein a second end of the second leaf spring opposite the first end includes at least one second lance extension.
  • the opening in the flow sensor housing includes a first set of four openings and a second set of four openings, wherein each of the first set of four openings and the second set of four openings includes a first opening, a second opening, a third opening, and a fourth opening spaced apart from each other along the flow sensor housing, wherein the middle portion of the first electrical contact of the first pair of electrical contacts is located external to the flow sensor housing adjacent an outer surface of the flow sensor housing between the first opening and the second opening of the first set of four openings, wherein the middle portion of the second electrical contact of the first pair of electrical contacts is located external to the flow sensor housing adjacent the outer surface of the flow sensor housing between the third opening and the fourth opening of the first set of four openings, wherein the middle portion of the first electrical contact of the second pair of electrical contacts is located external to the flow sensor housing adjacent the outer surface of the flow sensor housing between the first opening and the second opening of the second set of four openings, wherein the middle portion of the second electrical contact
  • a flow sensor including: a flow sensor housing; a flow tube including a fluid inlet at a first end of the flow tube and a fluid outlet at a second end of the flow tube opposite the first end of the flow tube; at least one sensor configured to characterize at least one attribute of a fluid in the flow tube; and a flow sensor electrical contact mounted on the flow sensor housing and in electrical communication with the at least one sensor.
  • the flow sensor electrical contact is directly connected to the flow sensor housing, and wherein the flow sensor electrical contact is directly connected to the at least one sensor.
  • the at least one sensor includes at least one piezoelectric crystal, and wherein the flow sensor electrical contact is in direct contact with the piezoelectric crystal of the at least one sensor.
  • the at least one sensor includes a first piezo element at an upstream position of the flow tube and a second piezo element at a downstream position of the flow tube, wherein the first piezo element includes a first piezoelectric crystal, and wherein the second piezo element includes a second piezoelectric crystal, wherein the first piezoelectric crystal is between the first electrical contact and the second electrical contact of the first pair of electrical contacts such that a first face of the first piezoelectric crystal is in direct contact with the first electrical contact of the first pair of electrical contacts and a second face of the first piezoelectric crystal opposite the first face of the first piezoelectric crystal is in direct contact with the second electrical contact of the first pair of electrical contacts, wherein the second piezoelectric crystal is between the first electrical contact and the second electrical contact of the second pair of electrical contacts such that a first face of the second piezoelectric crystal is in direct contact with the first electrical contact of the second pair of electrical contacts and a second face of the second
  • each of the first electrical contact and the second electrical contact of each of the first pair of electrical contacts and the second pair of electrical contacts extends through an opening in the flow sensor housing.
  • each of the first electrical contact and the second electrical contact of at least one of the first pair of electrical contacts and the second pair of electrical contacts includes: a middle portion that extends between a first end portion and a second end portion, wherein the first end portion includes a first leaf spring, and wherein the second end portion includes a second leaf spring including a rolled end.
  • each of the first electrical contact and the second electrical contact of at least one of the first pair of electrical contacts and the second pair of electrical contacts includes: a middle portion that extends between a first end portion and a second end portion, wherein the first end portion includes a double cantilevered spring, wherein a first end of the double cantilevered spring is connected to the middle portion, wherein a second end of the double cantilevered spring opposite the first end includes at least one first lance extension and a first leaf spring, wherein the second end portion includes a second leaf spring, wherein a first end of the second leaf spring is connected the middle portion, and wherein a second end of the second leaf spring opposite the first end includes at least one second lance extension.
  • the at least one sensor includes a first piezo element at an upstream position of the flow tube and a second piezo element at a downstream position of the flow tube, wherein the first piezo element includes a first piezoelectric crystal, and wherein the second piezo element includes a second piezoelectric crystal, wherein the first piezoelectric crystal is between the first electrical contact and the second electrical contact of the first pair of electrical contacts such that a first face of the first piezoelectric crystal is in direct contact with the first electrical contact of the first pair of electrical contacts and a second face of the first piezoelectric crystal opposite the first face of the first piezoelectric crystal is in direct contact with the second electrical contact of the first pair of electrical contacts, wherein the second piezoelectric crystal is between the first electrical contact and the second electrical contact of the second pair of electrical contacts such that a first face of the second piezoelectric crystal is in direct contact with the first electrical contact of the second pair of electrical contacts and a
  • Clause 6 The system of any of clauses 1-5, wherein at least a portion of each of the first electrical contact and the second electrical contact of each of the first pair of electrical contacts and the second pair of electrical contacts extends through an opening in the flow sensor housing.
  • each of the first electrical contact and the second electrical contact of at least one of the first pair of electrical contacts and the second pair of electrical contacts includes: a middle portion that extends between a first end portion and a second end portion, wherein the first end portion includes a first leaf spring, and wherein the second end portion includes a second leaf spring including a rolled end.
  • each of the first pair of openings and the second pair of openings includes a first opening and a second opening spaced apart from each other along the flow sensor housing, wherein the second end portion including the second leaf spring including the rolled end of the first electrical contact and the second electrical contact of the first pair of electrical contacts respectively extend through the first opening and the second opening of the first pair of openings, wherein the second end portion including the second leaf spring including the rolled end of the first electrical contact and the second electrical contact of the second pair of electrical contacts respectively extend through the first opening and the second opening of the second pair of openings, wherein the middle portion of each of the first electrical contact and the second electrical contact of the first pair of electrical contacts is located within the flow sensor housing adjacent an inner surface of the flow sensor housing, wherein the middle portion of each of the first electrical contact and the second electrical contact of the second pair of electrical contacts is located within the flow sensor
  • each of the first electrical contact and the second electrical contact of at least one of the first pair of electrical contacts and the second pair of electrical contacts includes: a middle portion that extends between a first end portion and a second end portion, wherein the first end portion includes a double cantilevered spring, wherein a first end of the double cantilevered spring is connected to the middle portion, wherein a second end of the double cantilevered spring opposite the first end includes at least one first lance extension and a first leaf spring, wherein the second end portion includes a second leaf spring, wherein a first end of the second leaf spring is connected the middle portion, and wherein a second end of the second leaf spring opposite the first end includes at least one second lance extension.
  • the opening in the flow sensor housing includes a first set of four openings and a second set of four openings, wherein each of the first set of four openings and the second set of four openings includes a first opening, a second opening, a third opening, and a fourth opening spaced apart from each other along the flow sensor housing, wherein the middle portion of the first electrical contact of the first pair of electrical contacts is located external to the flow sensor housing adjacent an outer surface of the flow sensor housing between the first opening and the second opening of the first set of four openings, wherein the middle portion of the second electrical contact of the first pair of electrical contacts is located external to the flow sensor housing adjacent the outer surface of the flow sensor housing between the third opening and the fourth opening of the first set of four openings, wherein the middle portion of the first electrical contact of the second pair of electrical contacts is located external to the flow sensor housing adjacent the outer surface of the flow sensor housing between the first opening and the second opening of the second set of four openings, wherein the middle portion of the first electrical contact of the second pair of electrical contacts is located external to the flow
  • a flow sensor comprising: a flow sensor housing; a flow tube including a fluid inlet at a first end of the flow tube and a fluid outlet at a second end of the flow tube opposite the first end of the flow tube; at least one sensor configured to characterize at least one attribute of a fluid in the flow tube; and a flow sensor electrical contact mounted on the flow sensor housing and in electrical communication with the at least one sensor.
  • Clause 15 The flow sensor of any of clauses 11-14, wherein the at least one sensor includes a first piezo element at an upstream position of the flow tube and a second piezo element at a downstream position of the flow tube, wherein the first piezo element includes a first piezoelectric crystal, and wherein the second piezo element includes a second piezoelectric crystal, wherein the first piezoelectric crystal is between the first electrical contact and the second electrical contact of the first pair of electrical contacts such that a first face of the first piezoelectric crystal is in direct contact with the first electrical contact of the first pair of electrical contacts and a second face of the first piezoelectric crystal opposite the first face of the first piezoelectric crystal is in direct contact with the second electrical contact of the first pair of electrical contacts, wherein the second piezoelectric crystal is between the first electrical contact and the second electrical contact of the second pair of electrical contacts such that a first face of the second piezoelectric crystal is in direct contact with the first electrical contact of the second pair of electrical contacts and
  • Clause 16 The flow sensor of any of clauses 11-15, wherein at least a portion of each of the first electrical contact and the second electrical contact of each of the first pair of electrical contacts and the second pair of electrical contacts extends through an opening in the flow sensor housing.
  • each of the first electrical contact and the second electrical contact of at least one of the first pair of electrical contacts and the second pair of electrical contacts includes: a middle portion that extends between a first end portion and a second end portion, wherein the first end portion includes a double cantilevered spring, wherein a first end of the double cantilevered spring is connected to the middle portion, wherein a second end of the double cantilevered spring opposite the first end includes at least one first lance extension and a first leaf spring, wherein the second end portion includes a second leaf spring, wherein a first end of the second leaf spring is connected the middle portion, and wherein a second end of the second leaf spring opposite the first end includes at least one second lance extension.
  • the opening in the flow sensor housing includes a first set of four openings and a second set of four openings, wherein each of the first set of four openings and the second set of four openings includes a first opening, a second opening, a third opening, and a fourth opening spaced apart from each other along the flow sensor housing, wherein the middle portion of the first electrical contact of the first pair of electrical contacts is located external to the flow sensor housing adjacent an outer surface of the flow sensor housing between the first opening and the second opening of the first set of four openings, wherein the middle portion of the second electrical contact of the first pair of electrical contacts is located external to the flow sensor housing adjacent the outer surface of the flow sensor housing between the third opening and the fourth opening of the first set of four openings, wherein the middle portion of the first electrical contact of the second pair of electrical contacts is located external to the flow sensor housing adjacent the outer surface of the flow sensor housing between the first opening and the second opening of the second set of four openings, wherein the middle portion of the first electrical contact of the second pair of electrical contacts is located external to the flow
  • FIG. 3A is a flow chart of a non-limiting embodiment or aspect of a process for using a flow sensor system
  • FIG. 3B is a flow chart of a non-limiting embodiment or aspect of a process for using a flow sensor system
  • FIG. 3C is a flow chart of a non-limiting embodiment or aspect of a process for using a flow sensor system
  • FIG. 3D is a flow chart of a non-limiting embodiment or aspect of a process for using a flow sensor system
  • FIG. 3F is a flow chart of a non-limiting embodiment or aspect of a process for using a flow sensor system
  • FIG. 3G is a flow chart of a non-limiting embodiment or aspect of a process for using a flow sensor system
  • FIG. 3H is a flow chart of a non-limiting embodiment or aspect of a process for using a flow sensor system
  • FIG. 4A is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 4B is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 4C is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 4D is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 5A is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 5B is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 5C is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 6A is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 6B is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 6C is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 7A is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 9B is a flowchart of non-limiting embodiments or aspects of a process for using a flow sensor system
  • FIG. 9C is a flowchart of non-limiting embodiments or aspects of a process for using a flow sensor system
  • FIG. 9E1 is a flowchart of non-limiting embodiments or aspects of a process for using a flow sensor system
  • FIG. 9E2 is a flowchart of non-limiting embodiments or aspects of a process for using a flow sensor system
  • FIGS. 10A-10H are perspective views of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIGS. 11A-11E are perspective views of an implementation of non-limiting embodiments or aspects of an electrical contact of a flow sensor system
  • FIGS. 11F and 11G are perspective views of an implementation of non-limiting embodiments or aspects of an electrical contact of a flow sensor system
  • FIGS. 14A-14E are perspective views of an implementation of non-limiting embodiments or aspects of an electrical contact of a flow sensor system
  • FIGS. 15 and 16 are sectional views of non-limiting embodiments or aspects of a flow sensor of a flow sensor system including the implementation of the electrical contact of FIGS. 14A-14E;
  • FIG. 17A is a perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 17B is a sectional perspective view of an implementation of non-limiting embodiments or aspects of a flow sensor system
  • FIG. 18 is a perspective view of non-limiting embodiments or aspects of a connection between components of a flow sensor system
  • FIG. 19 is a perspective view of non-limiting embodiments or aspects of a connection between components of a flow sensor system
  • FIG. 20 is a sectional view of view of non-limiting embodiments or aspects of a connection between components of a flow sensor system
  • FIG. 21 is a sectional view of view of non-limiting embodiments or aspects of a connection between components of a flow sensor system
  • FIG. 23 is a sectional view of view of non-limiting embodiments or aspects of a connection between components of a flow sensor system.
  • proximal shall refer to a part or direction located away or furthest from a patient (upstream), while distal shall refer to a part or direction towards or located nearest to a patient (downstream).
  • a drug substance is used herein in an illustrative, nonlimiting manner to refer to any substance injectable into the body of a patient for any purpose.
  • Reference to a patient may be to any being, human or animal.
  • Reference to a clinician may be to any person or thing giving treatment, e.g., a nurse, doctor, machine intelligence, caregiver, or even self-treatment.
  • the terms “communication” and “communicate” refer to the receipt or transfer of one or more signals, messages, commands, or other type of data.
  • one unit e.g., any device, system, or component thereof
  • to be in communication with another unit means that the one unit is able to directly or indirectly receive data from and/or transmit data to the other unit. This may refer to a direct or indirect connection that is wired and/or wireless in nature.
  • two units may be in communication with each other even though the data transmitted may be modified, processed, relayed, and/or routed between the first and second unit.
  • a first unit may be in communication with a second unit even though the first unit passively receives data and does not actively transmit data to the second unit.
  • a first unit may be in communication with a second unit if an intermediary unit processes data from one unit and transmits processed data to the second unit. It will be appreciated that numerous other arrangements are possible.
  • satisfying a threshold may refer to a value being greater than the threshold, more than the threshold, higher than the threshold, greater than or equal to the threshold, less than the threshold, fewer than the threshold, lower than the threshold, less than or equal to the threshold, equal to the threshold, etc.
  • the term “computing device” or “computer device” may refer to one or more electronic devices that are configured to directly or indirectly communicate with or over one or more networks.
  • the computing device may be a mobile device, a desktop computer, or the like.
  • the term “computer” may refer to any computing device that includes the necessary components to receive, process, and output data, and normally includes a display, a processor, a memory, an input device, and a network interface.
  • An “application” or “application program interface” (API) refers to computer code or other data sorted on a computer-readable medium that may be executed by a processor to facilitate the interaction between software components, such as a client-side front-end and/or server-side back-end for receiving data from the client.
  • An “interface” refers to a generated display, such as one or more graphical user interfaces (GUIs) with which a user may interact, either directly or indirectly (e.g., through a keyboard, mouse, touchscreen, etc.).
  • GUIs graphical user interfaces
  • server may refer to or include one or more processors or computers, storage devices, or similar computer arrangements that are operated by or facilitate communication and processing for multiple parties in a network environment, such as the Internet, although it will be appreciated that communication may be facilitated over one or more public or private network environments and that various other arrangements are possible. Further, multiple computers, e.g., servers, or other computerized devices, directly or indirectly communicating in the network environment may constitute a “system”. As used herein, the term “data center” may include one or more servers, or other computing devices, and/or databases.
  • a client device or user device may include a mobile device, a network-enabled appliance (e.g., a network-enabled television, refrigerator, thermostat, and/or the like), a computer, and/or any other device or system capable of communicating with a network.
  • a network-enabled appliance e.g., a network-enabled television, refrigerator, thermostat, and/or the like
  • GUI graphical user interface
  • Medical device 102 may be configured to physically connect to flow sensor 160 as described in more detail herein.
  • Short range wireless communication tag 104 may be attached to or integrated with medical device 102 as described in more detail herein.
  • short range wireless communication tag 104 includes one or more computing devices, chips, contactless transmitters, contactless transceivers, NFC transmitters/receivers, RFID transmitters/receivers, contact based transmitters/receivers, and/or the like.
  • base 180 includes one or more computing devices, chips, contactless transmitters, contactless transceivers, NFC transmitters/receivers, RFID transmitters/receivers, contact based transmitters/receivers, and/or the like.
  • base 180 can include one or more devices capable of transmitting and/or receiving information to and/or from short range wireless communication tag 104 via a short range wireless communication connection (e.g., a communication connection that uses NFC protocol, a communication connection that uses Radio-frequency identification (RFID), a communication connection that uses a Bluetooth® wireless technology standard, and/or the like).
  • a short range wireless communication connection e.g., a communication connection that uses NFC protocol, a communication connection that uses Radio-frequency identification (RFID), a communication connection that uses a Bluetooth® wireless technology standard, and/or the like.
  • RFID Radio-frequency identification
  • base 180 includes an integrated power source (not shown), such as a battery, and/or the like. Further details regarding non-limiting embodiments or aspects of base 180 are provided below with regard to FIGS. 3A-3H, 4A-4D, 5A-5C, 6A-6C, 7A, 7B, 8, 10A, 10B, 10F-10H, 17A- 17D, and 18-23.
  • Remote computing device 110 may include one or more devices capable of receiving information and/or data from base 180 (e.g., via communication network 108, etc.) and/or communicating information and/or data to base 180 (e.g., via communication network 108, etc.).
  • remote computing device 110 may include a computing device, a server, a group of servers, a mobile device, a group of mobile devices, and/or the like.
  • FIG. 1 The number and arrangement of devices and systems shown in FIG. 1 is provided as an example. There may be additional devices and/or systems, fewer devices and/or systems, different devices and/or systems, or differently arranged devices and/or systems than those shown in FIG. 1. Furthermore, two or more devices and/or systems shown in FIG. 1 may be implemented within a single device and/or system, or a single device and/or system shown in FIG. 1 may be implemented as multiple, distributed devices and/or systems. Additionally, or alternatively, a set of devices and/or systems (e.g., one or more devices or systems) of environment 100 may perform one or more functions described as being performed by another set of devices and/or systems of environment 100.
  • a set of devices and/or systems e.g., one or more devices or systems of environment 100 may perform one or more functions described as being performed by another set of devices and/or systems of environment 100.
  • FIG. 2 is a diagram of example components of a device 200.
  • Device 200 may correspond to base 180 and/or remote computing device 110.
  • base 180 and/or remote computing device 110 may include at least one device 200 and/or at least one component of device 200.
  • device 200 may include bus 202, processor 204, memory 206, storage component 208, input component 210, output component 212, and/or communication interface 214.
  • Storage component 208 may store information and/or software related to the operation and use of device 200.
  • storage component 208 may include a hard disk (e.g., a magnetic disk, an optical disk, a magneto-optic disk, a solid state disk, etc.), a compact disc (CD), a digital versatile disc (DVD), a floppy disk, a cartridge, a magnetic tape, and/or another type of computer-readable medium, along with a corresponding drive.
  • Input component 210 may include a component that permits device 200 to receive information, such as via user input (e.g., a touch screen display, a keyboard, a keypad, a mouse, a button, a switch, a microphone, etc.).
  • input component 210 may include a sensor for sensing information (e.g., a global positioning system (GPS) component, an accelerometer, a gyroscope, an actuator, an NFC sensor, an RFID sensor, an optical sensor, a barcode reader, etc.).
  • Output component 212 may include a component that provides output information from device 200 (e.g., a display, a speaker, one or more lightemitting diodes (LEDs), etc.).
  • GPS global positioning system
  • LEDs lightemitting diodes
  • Memory 206 and/or storage component 208 may include data storage or one or more data structures (e.g., a database, etc.). Device 200 may be capable of receiving information from, storing information in, communicating information to, or searching information stored in the data storage or one or more data structures in memory 206 and/or storage component 208.
  • device 200 may include additional components, fewer components, different components, or differently arranged components than those shown in FIG. 2. Additionally, or alternatively, a set of components (e.g., one or more components) of device 200 may perform one or more functions described as being performed by another set of components of device 200.
  • a set of components e.g., one or more components
  • FIGS. 3A-3H, 4A-4D, 5A-5C, 10A-10H, 11A-11G, 12, 13, 14A-14E, 15, 16, 17A- 17D, and 18-23 illustrate non-limiting embodiments or aspects of flow sensor system 150.
  • flow sensor system 150 may include two main assemblies which fit together prior to use: flow sensor 160 and base 180.
  • flow sensor 160 may be a single-use flow sensor which is engageable with reusable base 180.
  • Flow sensor system 150 may reduce medication error at bedside during bolus delivery.
  • Flow sensor system 150 may provide a record of and electronically measure bolus delivery, which allows monitoring bolus delivery and automatic documentation of bolus delivery as part of a patient's health record.
  • Flow sensor system 150 may provide alerts when bolus delivery inconsistent with a patient's medical record is about to occur.
  • Flow sensor system 150 may be a handheld instrument injection site with interactive interface for syringe injection IV drug delivery and direct electronic medical record documentation.
  • Base 180 may include a durable reusable reader base with a touchscreen display and a separate disposable consumable flow sensor 160.
  • flow sensor 160 may include a flow tube 162, at least one sensor 170 configured to characterize at least one attribute of the fluid in the flow tube 162, and/or a flow senor electrical contact 172 (e.g., a plurality of flow sensor electrical contacts 172, etc.) in electrical communication with the at least one sensor 170.
  • a flow senor electrical contact 172 e.g., a plurality of flow sensor electrical contacts 172, etc.
  • the flow tube 162 may include a fluid inlet 163 at a first end of the flow tube 162, a fluid outlet 164 at a second end of the flow tube 162 opposite the first end of the flow tube 162, a fluid injection port 165 between the first end and the second end of the flow tube 162, and a valve 166 (e.g., a manual valve, etc.) configured to control a flow of a fluid in the flow tube 162.
  • a valve 166 e.g., a manual valve, etc.
  • base 180 includes a slot or opening 196 configured to receive the flow sensor 160, and the flow sensor 160 is configured for sliding engagement and/or snap-fit connection with the slot or opening 196 of the base 180.
  • the first ultrasonic transducer or piezo element and the second ultrasonic transducer or piezo element 170a, 170b are annular in shape and encircle the flow tube 162 at respective mounting points. In some non-limiting embodiments or aspects, the first ultrasonic transducer or piezo element and the second ultrasonic transducer or piezo element 170a, 170b are mounted apart a preselected distance from each other. The first and second ultrasonic transducers or piezeo elements 170a and 170b may be in electrical communication with the one or more processors 204 (e.g., via the electrical contacts 172, 192, etc.) when the flow sensor 160 is connected to the base 180.
  • the one or more processors 204 e.g., via the electrical contacts 172, 192, etc.
  • valve 166 may be configured transition between a plurality of different states to control at least one of: the flow of the fluid between the fluid inlet 163 and the fluid outlet 164, the flow of the fluid between the fluid inlet 163 and the fluid injection port 165, the flow of the fluid between the fluid injection port 165 and the fluid outlet 164, or any combination thereof.
  • valve 166 may include a 3- way stopcock valve, and/or the like.
  • the one or more processors 204 are programmed and/or configured to automatically detect a connection of a syringe 102 to the fluid injection port 165 of the flow sensor 160.
  • reader base 180 may automatically detect the connection of the syringe to the fluid injection port 165 syringe presence and initiates decoding of tag 104 (e.g., via the short range wireless communication device, etc.) to record information contents of tag 104 (e.g., medication information, etc.).
  • tag or label 104 which may include an NFC tag embedded in the tag or label 104, may be manually placed on a body of syringe 102 using a standard label printer.
  • a label printer can be used to encode the NFC tag at the time of printing.
  • NFC encoding can be performed using a separate NFC tag encoding unit.
  • the short range wireless communication device is configured to automatically communicate with the short range wireless communication tag 104 on syringe 102 via a short range wireless communication connection when the short range wireless communication tag 104 is brought within a communication range of the short range wireless communication device.
  • the short range wireless communication device is configured to automatically communicate with the short range wireless communication tag 104 on the syringe 102 via a short range wireless communication connection in response to the base 180 detecting a connection of the syringe 102 to the fluid injection port 165.
  • the tag 104 may be detected by using NFC when placed radially adjacent to an antenna of the short range wireless communication device in base 180.
  • base 180 may include an integrated NFC antenna positioned radially to record syringe label tag 104 and read and decode encoded information therefrom.
  • the NFC antenna and label tags are optimized to eliminate false detection of adjacently positioned syringes with NFC tag labels (e.g., an NFC antenna mounted radially in the base 180 and label tag 104 on the syringe barrel of syringe 102 can be used to transmit encoded label information from the syringe label tag 104 to the reader base 180, etc.).
  • NFC tag labels e.g., an NFC antenna mounted radially in the base 180 and label tag 104 on the syringe barrel of syringe 102 can be used to transmit encoded label information from the syringe label tag 104 to the reader base 180, etc.
  • the one or more processors 204 may be programmed and/or configured to automatically detect a state of the valve 166 when the flow sensor 160 is connected to the base 180.
  • base 180 may automatically determine a state or position of valve 166 when a user manually switches the state or position of the valve 166.
  • an electronic and/or mechanical interface may interact with the valve 166 to monitor valve position or state.
  • the one or more processors 204 are programmed and/or configured to determine whether to record information associated with the at least one attribute of the fluid in the flow tube 162 based on the detected state of the valve 166. For example, a user may switch the state or position of the valve 166 to enable recording of flow measurement and/or permit IV fluid flow. As an example, the one or more processors 204 of base 180 may determine when to bookmark flow measurements and ignore IV fluid flow and redundant volume measurements when IV fluid is drawn into the syringe 102 then subsequently injected through the flow sensor 160.
  • flow sensor 160 is inserted in-line with IV line 106 between a fluid source and a patient.
  • disposable flow sensor 160 can be inserted in-line with IV line 106 enabling IV fluid to pass directly to a patient extension line catheter.
  • valve 166 is configured to enable syringe 102 to draw IV fluid from IV line 106 and deliver the drawn IV fluid through the flow sensor 160 to push the fluid to flush the flow sensor 160 and extension line of a previously delivered drug volume.
  • flow sensor 160 may be integrated into IV 106 (e.g., into an IV extension set line, etc.) without separate detachable connectors.
  • fluid flow stopcock valves can be positioned in-line before and/or after flow sensor 160 and/or additional functionality to incorporate workflow operations can be developed within the interactive display 194 of base 180. For example, by positioning flow sensor 160 in-line with IV line 106, a dead space issue to due lack of flushing associated with parallel connections can be resolved.
  • base 180 includes an optical scanner configured to read a bar code label (e.g., a patient wristband bar code label, a bar code label on flow sensor 160, etc.).
  • display 194 includes a touchscreen display configured to receive user input from a user.
  • display 194 may include an interactive graphical user interface configured to display a current status of internal functions of reader base 180, a current status of an injection site, and/or a prompt for user interaction, and reader base 180 may interact with the user via touchscreen display, audio, voice command, haptic feedback, and/or the like (e.g., to prompt the user on current status and request user input, etc.). Accordingly, by incorporating display 194 into base 180, a user need not remove their attention from the base 180 to interact with the display 194.
  • base 180 includes a wireless communication device configured to communicate information associated with the at least one attribute of the fluid in the flow tube 162 to remote computing device 110.
  • base 180 may communicate information and/or data with remote computing device 110 to document drug delivery occurrences into patient medical records (e.g., patient medical records associated with a patient wristband bar code label scanned by the optical scanner of base 180, etc.).
  • patient medical records e.g., patient medical records associated with a patient wristband bar code label scanned by the optical scanner of base 180, etc.
  • short range wireless communication device of base 180 may include a curved coil antenna 600.
  • HF RFID/NFC works by creating an inductive coupling of magnetic waves in the 13.56MHz range to power up a HF RFID/NFC tag, which transmits the encoded information back to a transmitting coil antenna.
  • the transmitting coil antenna should transmit enough energy to power up the tag 104, and a tag coil antenna in tag 104 should receive enough energy to power up and transmit the encoded information stored in tag 104 back to the transmitting coil antenna.
  • a transmitting coil antenna may be flat and the tag 104 may lie parallel to the transmitting coil antenna to power the tag 104 up if the tag 104 receives enough energy.
  • the energy received may be based a distance of the tag 104 to the transmitting coil antenna and/or an orientation of the transmitting coil antenna with respect to the tag 104 (e.g., an offset and/or an angle at which the tag 104 faces the transmitting coil antenna, etc.). For example, as the angle between the coil antenna of the tag 104 and the transmitting coil antenna becomes closer to 90 or 270 degrees, antenna energy received by tag 104 may be reduced to zero.
  • a formula for calculating an amount of energy received by tag 104 from a transmitting coil antenna may be defined according a cosine (angle).
  • Non-limiting embodiments or aspects of flow sensor system 150 including curved coil antenna 600 may reduce and/or eliminate a 90 and/or 270 degree angle between a transmitting coil antenna of the short range wireless communication device of base 180 and tag 104 on syringe 102 by encompassing and/or surrounding syringe 102 with the curved coil antenna 600.
  • a transmitting coil antenna of the short range wireless communication device of base 180 and tag 104 on syringe 102 may be encompassing and/or surrounding syringe 102 with the curved coil antenna 600.
  • curved coil antenna 600 may enable magnetic waves to be transmitted out from the short range wireless communication device of base 180 in a radial fashion with respect to syringe 102 when syringe 102 is connected to flow sensor 160 and flow sensor 160 is connected to base 180, thereby covering a larger area of syringe 102 (e.g., depending on a circumferential area of the curved coil antenna 600, an acceptance criteria for successful reads, etc.).
  • curved coil antenna 600 may enable the magnetic waves to be transmitted radially from the short range wireless communication device of base 180 to encompass an NFC HF RFID tag on a circular syringe.
  • fluid injection port 165 of flow sensor 160 may extend from flow tube 162 in a first direction parallel to a longitudinal axis of the fluid injection port 165, and curved coil antenna 600 in the short range wireless communication device of base 180 may be radially curved with respect to the longitudinal axis of the fluid injection port 165 when the flow sensor 160 is connected to the base 180.
  • curved coil antenna 600 extends in a direction parallel to a plane defined by a face of display 194 of base 180 (e.g., in a direction parallel to a longitudinal axis of syringe 102 when syringe 102 is connected to flow sensor 160 and flow sensor 160 is connected to base 180, etc.).
  • curved coil antenna 600 extends in a direction parallel to a plane defined by a face of display 194 of base 180 (e.g., in a direction parallel to a longitudinal axis of syringe 102 when syringe 102 is connected to flow sensor 160 and flow sensor 160 is connected to base 180, etc.).
  • curved coil antenna 600 extends in a direction not parallel (e.g., in a direction perpendicular to) a plane defined by a face of display 194 of base 180 (e.g., in a direction perpendicular to a longitudinal axis of syringe 102 when syringe 102 is connected to flow sensor 160 and flow sensor 160 is connected to base 180, etc.).
  • curved coil antenna 600 may at least partially surround syringe 102 when syringe 102 is connected to flow sensor 160 and flow sensor 160 is connected to base 180.
  • a curvature of curved coil antenna may correspond to a circumferential area of a 60mL syringe, and/or the like.
  • FIGS. 3A-3H and 9A-9E are flowcharts of non-limiting embodiments or aspects of processes for using a flow sensor system.
  • one or more of the steps of the processes are performed (e.g., completely, partially, etc.) by flow sensor system 150 (e.g., one or more devices of flow sensor system 150, etc.).
  • a process for using a flow sensor system includes scanning a flow sensor label attached to the disposable flow sensor to decode a flow sensor identifier associated with the flow sensor.
  • an optical scanner of base 180 e.g., “Reader” in FIGS. 9A-9E
  • disposable flow sensor 160 e.g., “Sensor” in FIGS. 9A- 9E
  • a flow sensor label e.g., a flow sensor barcode, etc.
  • barcode scanning of the disposable flow sensor 160 enables base 180 (and/or remote computing system 110) to determine whether the disposable flow sensor 160 has been used yet or not and, if so, by which patient.
  • a process for using a flow sensor system includes scanning a patient label attached to a patient to decode a patient identifier associated with the patient.
  • the optical scanner of base 180 for disposable flow sensor 160 may scan a patient label attached to a patient (e.g., a patient wristband, a patient barcode, etc.) to decode a patient identifier associated with the patient.
  • a smart device e.g., base 180, etc.
  • the smart device may communicate patient identifier information (e.g., Patient MRN) and smart IV consumable unique identification number up to a virtual server (e.g., remote computing device 110, etc.) on a hospital network.
  • the virtual server may utilize patient identifier information to generate a bi-directional link to applications on the Hospital Information System associated to that patient relevant to the function of the smart device and smart consumable. Once the bi-directional link is established, the virtual server may associate the link to the smart IV consumable unique identification number and, if the smart device is disassociated, the smart device, or a new different device, can be reassociated by a scan of the smart consumable.
  • a process for using a flow sensor system includes connecting the disposable flow sensor to the base.
  • disposable flow sensor 160 may be connected to base 180.
  • a process for using a flow sensor system includes integrating the disposable flow sensor into an IV line.
  • disposable flow sensor 160 may be integrated into IV line 106.
  • disposable flow sensor 160 is integrated into IV line 106 after scanning the flow sensor label, scanning the patient label, and connecting the disposable flow sensor 160 to the base 180.
  • integrating disposable flow sensor 160 into IV line 106 after scanning the flow sensor label, scanning the patient label, and connecting the disposable flow sensor 160 to the base 180 may enable a clinician to prepare the base 180 and disposable flow sensor 160 prior to interaction with a patient and/or a pre-existing IV, which may add value when the clinician has time prior to the arrival of an inpatient with a pre-existing IV saving steps that need not be performed in the presence of the patient.
  • a process for using a flow sensor system includes communicating the flow sensor identifier and the patient identifier to a remote computing device and associating the flow sensor identifier with the patient identifier.
  • base 180 may communicate the flow sensor identifier and the patient identifier to remote computing device 110, and remote computing device 110 may associate the flow sensor identifier with the patient identifier in a database.
  • base 180 may communicate, to remote computing device 110, a request for a status of the disposable flow sensor 160 associated with the flow sensor identifier and receive, from remote computing device 110, an indication of the status of the disposable flow sensor 160 associated with the flow sensor identifier.
  • the indication of the status of the disposable flow sensor 160 may include an indication of whether the flow sensor identifier of the disposable flow sensor 160 is associated with the patient identifier of the patient.
  • base 180 may communicate, to remote computing device 110, a base identifier associated with the base 180 in the request for the status of the disposable flow sensor 160 associated with the flow sensor identifier, and remote computing device 110 may associate the base identifier with the flow sensor identifier and the patient identifier.
  • a process for using a flow sensor system includes communicating a request for information associated with the patient associated with the patient identifier, receiving the information associated with the patient, and displaying the information associated with the patient.
  • base 180 may communicate, to remote computing device 110, a request for information associated with the patient associated with the patient identifier, receive, from remote computing device 110, the information associated with the patient, and display, with a display, the information associated with the patient.
  • the information associated with the patient includes at least one of a list of medication allergies associated with the patient and a list of medication doses pending for the patient.
  • a short range wireless communication device of base 180 may scan a short range wireless communication tag 104 attached to a syringe 102 to decode a medication identifier associated with a medication in the syringe 102, and the base 180 may compare the medication identifier to the at least one of the list of medication allergies associated with the patient and the list of medication doses pending for the patient.
  • a display 194 of the base 180 may display an alert associated with administration of the medication to the patient based on the comparison.
  • the short range wireless communication device includes a near-field communication (NFC) receiver, and wherein the short range wireless communication tag includes a NFC tag.
  • NFC near-field communication
  • non-limiting embodiments or aspects of a process for using a flow sensor system may enable more steps to be performed at a site of care with a patient in view which provides advantages over methods that require interaction with EMR screens. Further, non-limiting embodiments or aspects of a process for using a flow sensor system may enable a patient to be associated with the smart consumable that is attached to the patient IV line rather than the electronics (e.g., base 180, etc.) alone, which provides for higher confidence that the device data is linked to the proper patient as the smart IV consumable is directly attached to the patient (through the IV), and which may enable the smart device to be swapped with another that can be associated to the patient by a scan of the smart consumable as opposed to being required to re-scan the patient wristband.
  • the electronics e.g., base 180, etc.
  • flow sensor electrical contact 172 may be directly mounted on flow sensor housing 1002 of flow sensor 160.
  • flow sensor housing 1002 may house or contain at least a portion of flow tube 162, the at least one sensor 170, and/or at least a portion of flow senor electrical contact 172.
  • flow tube 162 may include fluid inlet 163 at a first end of flow tube 162, fluid outlet 164 at a second end of flow tube 162 opposite the first end of flow tube 162, a fluid injection port 165 between the first end and the second end of flow tube 162, and valve 166 (e.g., a manual valve, etc.) configured to control a flow of a fluid in flow tube 162.
  • valve 166 e.g., a manual valve, etc.
  • base housing 1004 of base 180 may house or contain the one or more processors 204, at least a portion of base electrical contact 192, a short range wireless communication device (e.g., communication interface 214, a near-field communication (NFC) receiver, etc.), and/or display 194 (e.g., input component 210, output component 212, a touchscreen display configured to receive user input from a user, etc.), and slot or opening 196 may be provided in base housing 1004 to receive the flow sensor 160.
  • Flow sensor electrical contact 172 may be directly connected to and/or directly mounted on flow sensor housing 1002. For example, flow sensor electrical contact 172 may not be mounted on or connected to a printed circuit board.
  • Flow sensor electrical contact 172 may be directly connected (e.g., directly mechanically connected and directly electrically connected, etc.) to the at least one sensor 170.
  • the at least one sensor 170 may include first ultrasonic transducer or piezo element 170a arranged at an upstream position of the flow tube 162 and second ultrasonic transducer or piezo element 170b arranged at a downstream position of the flow tube 162.
  • first ultrasonic transducer or piezo element 170a and second ultrasonic transducer or piezo element 170b may be annular in shape and encircle flow tube 162 at respective mounting points, and/or first ultrasonic transducer or piezo element 170a and the second ultrasonic transducer or piezo element 170b may be mounted apart a pre-selected distance from each other.
  • the at least one sensor 170 may include at least one piezoelectric crystal (e.g., first piezoelectric crystal 17 la in first ultrasonic transducer or piezo element 170a, second piezoelectric crystal 171b in second ultrasonic transducer or piezo element 170b, etc.), and flow sensor electrical contact 172 may be in direct contact with the at least one piezoelectric crystal of the at least one sensor (e.g., in direct contact with first piezoelectric crystal 171a in first ultrasonic transducer or piezo element 170a, in direct contact with the second piezoelectric crystal 171b in second ultrasonic transducer or piezo element 170b, etc.).
  • first ultrasonic transducer or piezo element 170a may include first piezoelectric crystal 171a and/or second ultrasonic transducer or piezo element 170b may include second piezoelectric crystal 171b.
  • flow sensor electrical contact 172 may include a first pair of electrical contacts 1010a and a second pair of electrical contacts 1010b.
  • Each of the first pair of electrical contacts 1010a and the second pair of electrical contacts 1010b may include a first electrical contact 1012a and a second electrical contact 1012b. At least a portion of each of the first electrical contact 1012a and the second electrical contact 1012b of each of the first pair of electrical contacts 1010a and the second pair of electrical contacts 1010b may extend through an opening in flow sensor housing 1002.
  • Base electrical contact 192 may include a first pair of corresponding electrical contacts that correspond to the first pair of electrical contacts 1010a of flow sensor electrical contact 172 and a second pair of corresponding electrical contacts that correspond to the second pair of electrical contacts 101b of flow sensor electrical contact 172.
  • flow sensor electrical contact 172 may include a third electrical contact 1012c between the first pair of electrical contacts 1010a and the second pair of electrical contacts 1010b.
  • the third electrical contact 1012c may extend through the opening in flow sensor housing 1002 and be configured to be used by base 180 for an electrical continuity check to detect whether flow sensor 160 is attached to base 180.
  • base 180 may determine that flow sensor 160 is attached thereto in response to confirming the presence of a complete path for current flow that includes a pin or contact of base electrical contact 192 corresponding to the third electrical contact 1012c.
  • First piezoelectric crystal 171a may be between first electrical contact 1012a and second electrical contact 1012b of the first pair of electrical contacts 1010a such that a first face or surface (e.g., a silvered surface, etc.) of first piezoelectric crystal 171a is in direct contact with first electrical contact 1012a of the first pair of electrical contacts 1010a and a second face or surface (e.g., a silvered surface, etc.) of first piezoelectric crystal 171a opposite the first face of first piezoelectric crystal 171a is in direct contact with second electrical contact 1012b of the first pair of electrical contacts 1010a.
  • a first face or surface e.g., a silvered surface, etc.
  • Second piezoelectric crystal 171b may be between first electrical contact 1012a and second electrical contact 1012b of the second pair of electrical contacts 1010b such that a first face or surface (e.g., a silvered surface, etc.) of the second piezoelectric crystal 171b is in direct contact with first electrical contact 1012a of the second pair of electrical contacts 1010b and a second face or surface (e.g., a silvered surface, etc.) of second piezoelectric crystal 171b opposite the first face of second piezoelectric crystal 171b is in direct contact with second electrical contact 1012b of the second pair of electrical contacts 1010b.
  • a first face or surface e.g., a silvered surface, etc.
  • FIGS. 11A-11E are perspective views of an implementation 1100 of non-limiting embodiments or aspects of an electrical contact (e.g., first electrical contact 1012a of the first or second pair of electrical contacts 1010a or 1010b, second electrical contact 1012b of the first or second pair of electrical contacts 1010a or 1010b, third electrical contact 1012c, etc.) of flow sensor system 150.
  • first electrical contact 1012a and/or second electrical contact 1012b of the first pair of electrical contacts and/or the second pair of electrical contacts may include implementation 1100 of an electrical contact.
  • implementation 1100 of an electrical contact may include a middle portion 1102 that extends between a first end portion 1104 and a second end portion 1106.
  • Middle portion 1102 may include an opening 1103 via which implementation 1100 of an electrical contact may be heat-staked to an inner surface of flow sensor housing 1002 to secure or mount the electrical contact to flow sensor housing 1002.
  • the first end portion 1104 may include a first leaf spring 1140a
  • the first leaf spring 1140a of the first end portion 1104 may include a mound-like protrusion, e.g., a first bump 1105, which contacts a surface of piezoelectric crystals 171a, 171b of piezo elements 170a, 170b.
  • the second end portion 1106 may a second leaf spring 1107 including a rolled end 1108.
  • the rolled end 1108 of the second leaf spring 1107 of the second end portion 1106 may include a mound- like protrusion, e.g., a second bump 1109, which contacts a corresponding pin or contact of base electrical contact 192 when flow sensor 160 is connected to base 180.
  • FIGS. 1 IF and 11G are perspective views of an implementation 1150 of non-limiting embodiments or aspects of an electrical contact (e.g., first electrical contact 1012a of the first or second pair of electrical contacts 1010a or 1010b, second electrical contact 1012b of the first or second pair of electrical contacts 1010a or 1010b, third electrical contact 1012c, etc.) of flow sensor system 150.
  • Implementation 1150 of FIGS. 1 IF and 11G may be the same as or similar to implementation 1100 of FIGS. 11A-1 IE except implementation 1150 of FIGS. 11F and 11G may include a further leaf spring 1140b on first end portion 1104 between first leaf spring 1140a and middle portion 1102.
  • FIGS. 12 and 13 are sectional views of nonlimiting embodiments or aspects of a flow sensor of a flow sensor system including the implementation 1100 of an electrical contact (e.g., first electrical contact 1012a of the first and/or second pair of electrical contacts 1010a and/or 1010b, second electrical contact 1012b of the first and/or second pair of electrical contacts 1010a or 1010b, third electrical contact 1012c, etc.) of FIGS. 11A-11E. As shown in FIGS.
  • an electrical contact e.g., first electrical contact 1012a of the first and/or second pair of electrical contacts 1010a and/or 1010b, second electrical contact 1012b of the first and/or second pair of electrical contacts 1010a or 1010b, third electrical contact 1012c, etc.
  • the opening in flow sensor housing 1002 may include a first pair of openings 1202 (e.g., a pair of openings corresponding to first piezo element 170a, etc.) and/or a second pair of openings (e.g., a pair of openings corresponding to second piezo element 170a, etc.).
  • each of the first pair of openings 1202 and the second pair of openings 1204 may include a first opening 1302a and/or a second opening 1302b spaced apart from each other along flow sensor housing 1002.
  • first piezo element 170a may be located within flow sensor housing 1002 between the first pair of openings 1202 and second piezo element 170b may be located within flow sensor housing 1002 between the second pair of openings 1204.
  • the second end portion 1106 including the second leaf spring 1107 including the rolled end 1108 of the first electrical contact 1012a and the second electrical contact 1012b of the first pair of electrical contacts 1010a may respectively extend through the first opening 1302a and the second opening 1302b of the first pair of openings 1202.
  • the rolled end 1108 of the first electrical contact 1012a and the second electrical contact 1012b of the first pair of electrical contacts 1010a may be configured to respectively contact (e.g., at bump 1109, etc.) pins or contacts of base electrical contact 192 corresponding to the first electrical contact 1012a and the second electrical contact 1012b of the first pair of electrical contacts 1010a.
  • the second end portion 1106 including the second leaf spring 1107 including the rolled end 1108 of the first electrical contact 1012a and the second electrical contact 1012b of the second pair of electrical contacts 1010b may respectively extend through the first opening 1302a and the second opening 1302b of the second pair of openings 1204.
  • the rolled end 1108 of the first electrical contact 1012a and the second electrical contact 1012b of the second pair of electrical contacts 1010b may be configured to respectively contact (e.g., at bump 1109, etc.) pins or contacts of base electrical contact 192 corresponding to the first electrical contact 1012a and the second electrical contact 1012b of the second pair of electrical contacts 1010b.
  • the middle portion 1102 of each of the first electrical contact 1012a and the second electrical contact 1012b of each of the first pair of electrical contacts 1010a and the second pair of electrical contacts 1010b may be heat- staked to the inner surface of flow sensor housing 1002 to secure or mount the first electrical contact 1012a and the second electrical contact 1012b of each of the first pair of electrical contacts 1010a and the second pair of electrical contacts 1010b directly to flow sensor housing 1002.
  • the first end portion 1104 including the first leaf spring 1140a of each of the first electrical contact 1012a and the second electrical contact 1012b of the first pair of electrical contacts 1010a may be located within flow sensor housing 1002 and in direct contact with the first piezoelectric crystal 171a such that the first face of the first piezoelectric crystal 171a is in direct contact with the first end portion 1104 of the first electrical contact 1012a of the first pair of electrical contacts 1010a (e.g., at bump 1105, etc.) and the second face of the first piezoelectric crystal 171a opposite the first face of the first piezoelectric crystal 17 la is in direct contact with the first end portion 1105 of the second electrical contact 1012b of the first pair of electrical contacts 1010a (e.g., at bump 1105, etc.).
  • the first end portion 1104 including the first leaf spring 1140a of each of the first electrical contact 1012a and the second electrical contact 1012b of the second pair of electrical contacts 1010b may be located within flow sensor housing 1002 and in direct contact with the second piezoelectric crystal 17 lb such that the first face of the second piezoelectric crystal 171b is in direct contact with the first end portion 1104 of the first electrical contact 1012a of the second pair of electrical contacts 1010b (e.g., at bump 1105, etc.) and the second face of the second piezoelectric crystal 171b opposite the first face of the second piezoelectric crystal 171b is in direct contact with the first end portion 1104 of the second electrical contact 1012b of the second pair of electrical contacts 1010b (e.g., at bump 1105, etc.).
  • FIGS. 14A-14E are perspective views of an implementation 1400 of non-limiting embodiments or aspects of an electrical contact (e.g., first electrical contact 1012a of the first and/or second pair of electrical contacts 1010a and/or 1010b, second electrical contact 1012b of the first and/or second pair of electrical contacts 1010a and/or 1010b, third electrical contact 1012c, etc.) of flow sensor system 150.
  • first electrical contact 1012a and/or second electrical contact 1012b of the first pair of electrical contacts and/or the second pair of electrical contacts may include implementation 1400 of an electrical contact.
  • the first leaf spring 1412 of the first end portion 1404 may include a mound-like protrusion, e.g., a first bump 1413, which contacts a surface of piezoelectric crystals 171a, 171b of piezo elements 170a, 170b.
  • the second end portion 1406 may include a second leaf spring 1407.
  • a first end of the second leaf spring 1407 may be connected the middle portion 1402, and/or a second end of the second leaf spring 1407 opposite the first end may include at least one second lance extension 1414.
  • the second leaf spring 1407 of the second end portion 1406 may include a mound-like protrusion, e.g., a second bump 1415, between the first and second ends thereof which contacts a corresponding pin or contact of base electrical contact 192 when flow sensor 160 is connected to base 180.
  • a mound-like protrusion e.g., a second bump 1415
  • FIGS. 15 and 16 are sectional views of nonlimiting embodiments or aspects of a flow sensor of a flow sensor system including the implementation 1400 of an electrical contact (e.g., first electrical contact 1012a of the first and/or second pair of electrical contacts 1010a and/or 1010b, second electrical contact 1012b of the first and/or second pair of electrical contacts 1010a or 1010b, third electrical contact 1012c, etc.) of FIGS. 14A-14E.
  • the opening in flow sensor housing 1002 may include a first set of four openings 1502 and/or a second set of four openings 1504.
  • Each of the first set of four openings 1502 and the second set of four openings 1504 may include a first opening 1602a, a second opening 1602b, a third opening 1602c, and/or a fourth opening 1602d spaced apart from each other along flow sensor housing 1002.
  • first piezo element 170a may be located within flow sensor housing 1002 between pairs of the first set of four openings 1502 (e.g., between the second opening 1602b and the third opening 1602c outside of which are respectively located the first opening 1602a and the fourth opening 1602d, etc.) and second piezo element 170b may be located within flow sensor housing 1002 between pairs of the second set of four openings 1504 (e.g., between the second opening 1602b and the third opening 1602c outside of which are respectively located the first opening 1602a and the fourth opening 1602d, etc.).
  • the middle portion 1402 of the first electrical contact 1012a of the second pair of electrical contacts 1010b may be located external to flow sensor housing 1002 adjacent the outer surface of flow sensor housing 1002 between the first opening 1602a and the second opening 1602b of the second set of four openings 1504.
  • the middle portion 1402 of the second electrical contact 1012b of the second pair of electrical contacts 1010b may be located external to flow sensor housing 1002 adjacent the outer surface of flow sensor housing 1002 between the third opening 1602c and the fourth opening 1602d of the second set of four openings 1504.
  • the second end of the double cantilevered spring 1404 including the at least one first lance extension 1420 and the first leaf spring 1412 of each of the first electrical contact 1012a and the second electrical contact 1012b of the first pair of electrical contacts 1010a may be located within flow sensor housing 1002 (e.g., by respectively extending through the second opening 1602b and the third opening 1602c, etc.) and in direct contact with the first piezoelectric crystal 171a such that the first face of the first piezoelectric crystal 171a is in direct contact with the first leaf spring 1412 of the first electrical contact 1012a of the first pair of electrical contacts 1010a (e.g., at bump 1413, etc.) and the second face of the first piezoelectric crystal 171a opposite the first face of the first piezoelectric crystal 17 la is in direct contact with the first leaf spring 1412 of second first electrical contact 1012b of the first pair of electrical contacts 1010 (e.g., at bump 1413, etc.).
  • the at least one first lance extension 1410 of each of the first electrical contact 1012a and the second electrical contact 1012b of the first pair of electrical contacts 1010a may pierce into flow sensor housing 1002 from the inner surface of flow sensor housing 1002 to secure each of the first electrical contact 1012a and the second electrical contact 1012b of the first pair of electrical contacts 1010a to flow sensor housing 1002.
  • the second end of the double cantilevered spring 1404 including the at least one first lance extension 1410 and the first leaf spring 1412 of each of the first electrical contact 1012a and the second electrical contact 1012b of the second pair of electrical contacts 1010b may be located within flow sensor housing 1002 and in direct contact with the second piezoelectric crystal 171b such that the first face of the second piezoelectric crystal 171b is in direct contact with the first leaf spring 1412 of the first electrical contact 1012a of the second pair of electrical contacts 1010b (e.g., at bump 1413, etc.) and the second face of the second piezoelectric crystal 171b opposite the first face of the second piezoelectric crystal 171b is in direct contact with the first leaf spring 1412 of the second electrical contact 1012b of the second pair of electrical contacts 1010b (e.g., at bump 1413, etc.).
  • the second end of the second leaf spring 1407 including the least one second lance extension 1413 of each of the first electrical contact 1012a and the second electrical contact 1012b of each of the first pair of electrical contacts 1010a and the second pair of electrical contacts 1010b may be located within flow sensor housing 1002 (e.g., by respectively extending through the first opening 1602a and the fourth opening 1602d of flow sensor housing 1002, etc.).
  • the second lance extension 1414 of each of the first electrical contact 1012a and the second electrical contact 1012b of each of the first pair of electrical contacts 1010a and the second pair of electrical 1010b may pierce into flow sensor housing 1002 from the inner surface of flow sensor housing 1002 to secure each of the first electrical contact 1012a and the second electrical contact 1012b of each of the first pair of electrical contacts 1010a and the second pair of electrical contacts 1010b to flow sensor housing 1002.
  • flow sensor 160 and the base 180 may be detachably connectable to each other via a snap-fit connection between flow sensor housing 1002 and base housing 1004.
  • flow sensor housing 1002 may extend between a first end 1702a and a second end 1702b opposite the first end 1702a.
  • Flow sensor housing 1002 may include beam 1704 that extends from flow sensor housing 1002 at the first end 1702a of flow sensor housing 1002.
  • Beam 1704 may include beam tab 1706 that extends from beam 1704.
  • Beam 1704 and beam tab 1706 may be configured to form the snap-fit connection with base housing 1004 as described in more detail herein below.
  • flow sensor housing 1002 and/or components thereof may include or be composed of a polycarbonate material, such as Makrolon® Rx2530 (Gray 90, PC) manufactured by Covestro AG.
  • base housing 1004 and/or components thereof may include or be composed of a polycarbonate material, such as Makrolon Rx3440 (Gray 70, PC) manufactured by Covestro AG.
  • Fluid injection port 165 may extend from the flow sensor housing 1002 at the second end 1702b of the flow sensor housing in a same direction as beam 1704.
  • flow sensor housing 1002 may extend from the second end 1702b toward the first end 1702a in a first direction
  • beam 1704 may extend from flow sensor housing 1002 in a second direction at least partially perpendicular to the first direction
  • fluid injection port 165 may extend from flow sensor housing 1002 in the second direction at least partially perpendicular to the first direction.
  • Flow sensor housing 1002 may include first arced flange 1708 that at least partially surrounds fluid injection port 165.
  • the first end 1702a of flow sensor housing 1002 may include protruding grip 1710 extending from the first end 1702 of the flow sensor housing 1002 away from beam 1704.
  • protruding grip 1710 may extend from the first end 1702 of the flow sensor housing 1002 away from beam 1704 in the first direction.
  • flow tube 162 may pass through an opening in protruding grip 1710 and extend through an interior of protruding grip and flow sensor housing toward the second end 1702b of flow sensor housing 1002 where it may exit flow sensor housing 1004 via another opening in flow sensor housing 1002.
  • Flow sensor housing may include a plurality of bosses 1712 extending from flow sensor housing 1002 between beam 1704 and fluid injection port 165.
  • the plurality of bosses 1712 may be spaced apart from one another along the outer surface of flow sensor housing 1002.
  • the plurality of bosses 1712 may extend from flow sensor housing 1002 in a same direction as beam 1704 and/or fluid injection port 162 (e.g., in the second direction, etc.).
  • Base housing 1004 may extend between a first end 1750a and a second end 1750b opposite the first end 1750a and between a first side 1752a and a second side 1752b opposite the first side 1752a.
  • the first side 1752a of base housing 1004 may include slot or opening 196 that extends between the first end 1750a and the second end 1750b opposite the first end 1750a.
  • Opening 196 may be configured to receive flow sensor housing 1002.
  • Opening 196 may extend from the first side 1752a at the first end 1750a of base housing 1004 toward the second side 1752b of base housing 1004 as cavity 1754 in the first end 1750a of base housing 1004.
  • Cavity 1754 may include cavity tab 1756 that extends from the first end 1750a of base housing 1004 away from the second end 1750b of base housing 1004 (e.g., in the first direction, etc.). Beam 1704 and beam tab 1706 of flow sensor housing 1002 may be configured to form the snap-fit connection with cavity 1754 and cavity tab 1756 of base housing 1004. For moldability, cavity tab 1756 may be formed by cavity 1756 without a need for a slide, and/or beam tab 1706 may be formed by beam 1704.
  • Opening 196 may extend from the first side 1752a at the second end 1750b of base housing 1004 toward the second side 1752b of base housing 1004 as an at least partially open bore 1758.
  • the at least partially open bore 1758 may be partially surrounded by second arced flange 1760.
  • Second arced flange 1760 may be configured to receive and partially surround fluid injection port 165 with first arced flange 1708 of flow sensor housing 1002 between second arced flange 1760 of base housing 1004 and the second side 1752b of base housing 1004.
  • first arced flange 1708 of flow sensor housing 1002 may be rotatable with respect to second arced flange 1760 of base housing 1004 to bring the first face 1709a of first arced flange 1708 of flow sensor housing 1002 into contact with the second face 1761b of second arced flange 1760 of base housing 1004.
  • first arced flange 1708 and second arced flange 1760 may form a tapered dovetail- style joint with an additional retaining tab that reduces a tolerance of the tapered dovetail-style joint and acts as a pivot point and provides positive engagement therebetween.
  • the second arced flange may be configured with generous lead-in angles/drafts for ease of connection.
  • fluid injection port 165 may be inserted into second arced flange 1760 of base housing 1004 with first arced flange 1708 of flow sensor housing 1002 located between the second arced flange 1760 and the second side 1750 of base housing 1004 in bore 1758.
  • flow sensor housing 1002 of flow sensor 160 may be angled with respect to base housing 1004 of base 180 when fluid injection port 165 is initially inserted into second arced flange 1760 of base housing 1004 with first arced flange 1708 of flow sensor housing 1002 located between the second arced flange 1760 and the second side 1750 of base housing 1004 in bore 1758.
  • first arced flange 1708 of flow sensor housing 1002 located between the second arced flange 1760 and the second side 1750 of base housing 1004 in bore 1758.
  • valve position detection component 1802 may include a medical stopcock assembly with position detection as described in U.S. Patent Application No. 18/013,392, filed on June 29, 2021, the content of which is hereby incorporated by reference in its entirety.
  • flow sensor housing 1002 of flow sensor 160 may be rotated or pivoted with respect base housing 1004 of base 180 from Position (A) through Position (B) to Position (C) in a fist pivot direction to connect or attach flow sensor 160 to base 180.
  • first arced flange 1708 may be rotated with respect to second arced flange 1760, thereby forming two sliding tangent pivot points as shown in FIG.
  • beam 1704, beam tab 1706, and cavity tab 1756 may be configured such that less than or equal to 20 N of force applied to protruding grip 1710 in the second direction causes beam tab 1706 to deflect from and pass over cavity tab 1756 to form the snap-fit connection, and which brings flow sensor electrical contact 172 into electrical communication with base electrical contact 192.
  • the plurality of bosses 1712 may contact the outer surface of base housing 1004 within opening 196 to reduce or prevent over-travel of flow sensor electrical contact 172 with respect to base electrical contact 192 and/or flow sensor housing 1004 and/or to reduce or minimize a stack-up tolerance as compared to an entire length of flow sensor housing 1002 contacting base housing 1004.
  • a boss may not be provided nearest the snap-fit connection (e.g., with a threshold distance of beam 1704, etc.) to enable over-travel of beam 1704 for a snap-fit connection with reduced or minimal bending of flow sensor housing 1002 from a fulcrum of a closest middle boss of the plurality of bosses.
  • the snap-fit may be captured by a return angle of cavity tab 1756 which quickly and securely connects flow sensor housing 1002 to base housing 1004. In this way, a user may receive positive audible and tactile feedback. This feedback, along with the lead and return angles of the snap-fit connection may help to indicate that flow sensor 160 is either attached or detached, without ambiguity of successful attachment or detachment.
  • flow sensor housing 1002 of flow sensor 160 may be rotated or pivoted with respect base housing 1004 of base 180 in a second pivot direction opposite the first pivot direction from Position (C) through Position (B) to Position (A) to disconnect or detach flow sensor 160 from base 180.
  • beam tab 1706 may encounter, deflect, and pass over cavity tab 1756 to release the snap fit connection to detach the first end 1702a of flow sensor housing 1002 from base 1004.
  • beam 1704, beam tab 1706, and cavity tab 1756 may be configured such that less than or equal to 24 N of force applied to protruding grip 1710 in a direction opposite the second direction causes beam tab 1706 to deflect from and pass over cavity tab 1756 to release the snap-fit connection.
  • first arced flange 1708 may be rotated with respect to second arced flange 1760 to enable fluid injection port 165 to be removed from second arced flange 1760 of base housing 1004 to disconnect or detach second end 1702b of flow sensor housing 1002 of flow sensor 160 to from bases housing 1004 of base 180.
  • disconnection of flow sensor 160 from base 180 may be achieved via protruding grip 1710 by grasping protruding grip 1710 and swinging protruding grip 1710 away from base 180.
  • the opening 2402 in protruding grip 1710 may have a funnel or trumpet shape in which a diameter of the opening 2402 gradually decreases from a first larger diameter to a second smaller diameter defined by defined by inward facing surface of a sidewall of protruding grip 1710.
  • This funnel or trumpet shaped opening 2402 may create a kink-resistant feature internally with flow sensor 16 and/or provide an external scallop design for finger grip and purchase on protruding grip 1710 during connection/disconnection of flow sensor 160 to base 180.
  • Ribs 2406 on an exterior facing surface of the sidewall of protruding grip 1710 at the end of protruding grip 1710 that includes opening 2402 may include ribs 2404 that further define the grip profile for thumb and index fingers while maintaining wall thickness for the kink-resistant feature provided by funnel shaped opening 2402.
  • Protruding grip 1710 may include touchpoints or bumps 2406 extending from the exterior facing surface of the sidewall of protruding grip 1710 to provide visual action and tactile feel because the grip intentionally protrudes from flow sensor housing 1002 to discourage pulling of the tubing, especially during a disconnect of flow sensor 160 from base 180.
  • touchpoints or bumps 2406 extending from the exterior facing surface of the sidewall of protruding grip 1710 to provide visual action and tactile feel because the grip intentionally protrudes from flow sensor housing 1002 to discourage pulling of the tubing, especially during a disconnect of flow sensor 160 from base 180.
  • Protruding grip 1710 may be located to maintain sterility of flow sensor 160 by promoting handling of flow sensor 160 furthest away from fluid injection port 165, by protecting the spring contacts of flow sensor 160, and/or by providing leverage for connection/disconnection with base 180.
  • non-limiting embodiments or aspects of the present disclosure may provide an improved swing connection and/or disconnection snap-fit of flow sensor 160 to base 180 with spherical touchpoints, a strain relief-style protruding contoured grip to discourage a user from pulling a tubing pigtail, a predictable connection/disconnection force, tactile and audible feedback of connection/disconnection while enabling base 180 to remain easily cleanable, and/or a reduced complexity in molding and stack-up of tolerance.
  • connection methods which pose cracks, crevices, sharp features, and/or other areas that prove challenging for disinfection by cleaning with various chemical wipes may be unsuitable for use in connecting flow sensor 160 to base 180.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Hematology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Anesthesiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Un système peut comprendre un capteur d'écoulement et un socle conçu pour se connecter au capteur d'écoulement. Le capteur d'écoulement peut comprendre un boîtier de capteur d'écoulement; un tube d'écoulement comprenant une entrée de fluide au niveau d'une première extrémité du tube d'écoulement et une sortie de fluide au niveau d'une seconde extrémité du tube d'écoulement opposée à la première extrémité du tube d'écoulement; au moins un capteur configuré pour caractériser au moins un attribut d'un fluide dans le tube d'écoulement; et un contact électrique de capteur d'écoulement monté sur le boîtier de capteur d'écoulement et en communication électrique avec ledit au moins un capteur. Le socle peut comprendre un boîtier de socle; un ou plusieurs processeurs; et un contact électrique de socle en communication électrique avec le ou les processeurs. Le contact électrique de capteur d'écoulement peut être en communication électrique avec le contact électrique de socle lorsque le capteur d'écoulement est relié au socle.
PCT/US2024/050429 2023-10-10 2024-10-09 Système de capteur d'écoulement Pending WO2025080615A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363589132P 2023-10-10 2023-10-10
US63/589,132 2023-10-10

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Publication Number Publication Date
WO2025080615A1 true WO2025080615A1 (fr) 2025-04-17

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190167919A1 (en) * 2016-08-02 2019-06-06 Becton, Dickinson And Company System and Method for Measuring Delivered Dose
US20210228803A1 (en) * 2020-01-27 2021-07-29 Becton, Dickinson And Company Flow Sensor System
US20230184571A1 (en) * 2015-08-28 2023-06-15 Crisi Medical Systems, Inc. Flow Sensor System Including Spring Contacts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230184571A1 (en) * 2015-08-28 2023-06-15 Crisi Medical Systems, Inc. Flow Sensor System Including Spring Contacts
US20190167919A1 (en) * 2016-08-02 2019-06-06 Becton, Dickinson And Company System and Method for Measuring Delivered Dose
US20210228803A1 (en) * 2020-01-27 2021-07-29 Becton, Dickinson And Company Flow Sensor System

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