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EP1633416A1 - Systeme pour doser et acheminer un agent liquide, en particulier pour l'alimentation enterale - Google Patents

Systeme pour doser et acheminer un agent liquide, en particulier pour l'alimentation enterale

Info

Publication number
EP1633416A1
EP1633416A1 EP04739958A EP04739958A EP1633416A1 EP 1633416 A1 EP1633416 A1 EP 1633416A1 EP 04739958 A EP04739958 A EP 04739958A EP 04739958 A EP04739958 A EP 04739958A EP 1633416 A1 EP1633416 A1 EP 1633416A1
Authority
EP
European Patent Office
Prior art keywords
medium
storage container
detection
control unit
detection signals
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.)
Withdrawn
Application number
EP04739958A
Other languages
German (de)
English (en)
Inventor
Christian Holz
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.)
Nestec SA
Wilden AG
Original Assignee
Wilden AG
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 Wilden AG filed Critical Wilden AG
Publication of EP1633416A1 publication Critical patent/EP1633416A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0026—Parts, details or accessories for feeding-tubes
    • A61J15/008—Sensor means, e.g. for sensing reflux, acidity or pressure
    • A61J15/0088—Sensor means, e.g. for sensing reflux, acidity or pressure for sensing parameters related to the device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
    • G01F11/284—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement combined with electric level detecting means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0026—Parts, details or accessories for feeding-tubes
    • A61J15/0096—Provisions for venting
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
    • A61M2205/3389—Continuous level detection

Definitions

  • the invention relates to a system for dosing and supplying a liquid medium, in particular for enteral nutrition in medical applications according to the preamble of patent claim 1.
  • a system of the generic type based on gravity is known, for example, from EP 0 241 595 A1.
  • a gravity-oriented container is used to store an amount of the food.
  • the container is connected to a drip chamber via an insertion tube and an inlet hose connected thereto, which interacts with a hose clamp via an outlet hose reaching to a patient.
  • the supply of the food to the patient takes place continuously and can be dosed by means of the hose clamp, by observing the amount of food dripping into the drop chamber and increasing or decreasing it by changing the passage cross section of the inlet hose using the hose clamp.
  • the invention provides for the arrangement of a detection device for determining at least one lower and at least one upper fill level in a storage container, so that the number and size of drops per unit of time are no longer important for the precise adjustment of the volume to be applied. Both can be influenced by external and internal factors that are not relevant to the invention. Controllable actuating elements for closing and opening the inflow device and the outflow device can ensure that in fact only the volume predetermined for application is supplied to a consumer or patient in a chronological order specified by a control unit. At the same time, the flow of the medium volume to be applied from the storage container can be monitored, so that if the outflow of the medium stops, a corresponding malfunction can be identified per defined time unit.
  • the detection device preferably has at least two diode measuring units, which record the lower and upper fill level in the storage tank.
  • Diode measuring units work very precisely and can be used in a wide variety of configurations.
  • At least the upper diode measuring direction in the direction of gravity is arranged in such a way that it does not scan the medium beam flowing into the storage container.
  • a measurement in the incoming medium jet could lead to an early closure of the inflow device to the storage container, although the volume intended for application has not yet reached the storage container.
  • the means can be used for actuating the controllable elements, they preferably each have a bi-stable lifting magnet, permanently energized lifting magnet or a stepper motor which moves the respective controllable actuating element into its closed or open position.
  • Lifting magnets or stepping motors are characterized by a short reaction time, so that the closing or opening process of the inflow and / or outflow device initiated by the control unit can be carried out quickly. Thanks to the fast response time, the precision of the system can be further optimized.
  • detection means are preferably provided which detect the position of the controllable organs. On the basis of this position detection, a malfunction of the controllable organs can be determined immediately and the system can be switched off in good time before any incorrect applications.
  • the storage container is provided with a ventilation device, so that there is no falsification of the volume of medium flowing in or out of the storage container due to existing air can arise.
  • Figure 1 is a schematic view of a system according to the invention with a housing shown in the open state.
  • FIG. 2 to 6 views similar to FIG. 1 with the housing closed to show the various operating states of the system from the filling of a storage container to the supply of the medium in the storage container to a consumer;
  • Fig. 7 shows a schematic embodiment of a storage container with ventilation device.
  • the system according to the invention has the general reference number 1.
  • the system 1 is accommodated in a housing 2, which can contain a control unit ST, to be discussed later, cf. Fig. 2.
  • the system 1 comprises a storage container 3 with an inflow device 4 and an outflow device 5, to which inflow and outflow hoses can be connected according to FIG. 1.
  • Both the inflow device 4 and the outflow device 5 are formed in one piece with the storage container 3, but they can also represent separate components for connection to the storage container.
  • a detection device is provided in the housing 2 for detecting a lower or minimum and an upper or maximum fill level, which are indicated at 8 and 9 in FIG. 1.
  • the detection device is connected to the control unit ST, which can be designed in a manner known to the person skilled in the art.
  • the control unit ST can in particular comprise a control panel with setting elements and a display panel.
  • the detection device preferably comprises a pair of diode measuring units 6, 7 spaced apart from one another in the direction of gravity. Other suitable measuring units can also be used.
  • the system 1 can be supplied with energy via an external energy source or internally via a battery.
  • the diode measuring unit 6 for detecting the upper fill level 8 is positioned in such a way that, although it does scan the upper fill level 8, it does not scan an incoming medium jet in order to avoid falsifications of the scanning result.
  • suitable fill level measuring units could also be arranged on the lower and / or upper side of the storage container 3.
  • controllable actuators 10 and 11 are provided, each having an actuator 12, which can be designed in the form of a bi-stable lifting magnet, a permanently energized lifting magnet or a stepping motor.
  • Opening and closing elements in the form of tube squeezing elements 13, 14 are provided and can be moved into a closing or opening position by the actuating members 10 and 11 assigned to them in order to position the inflow and outflow devices 4, 5. 1, the squeeze elements 13, 14 are in the closed position.
  • suitable closing elements e.g. Closing valves may be provided.
  • the actuation of the upper and lower squeeze elements 13, 14 and associated controllable actuation elements 10, 11 can be controlled by the control unit ST, which receives the detection signals of the upper and lower diode measuring units 6, 7 as input and processes these signals in accordance with a desired program sequence. Accordingly, different control processes depending on the programming of the control unit.
  • the control unit ST can be integrated into the system, or it is an external control unit. In the latter case, an interface can be provided in the system in order to exchange the signals between the control unit and the system's own signal generators and receivers.
  • the system 1 is in the operating state and the storage container 3 can be filled or empty.
  • the storage container 3 is to be aligned in accordance with FIG. 2 in such a way that gravity can have maximum effect.
  • the two squeeze elements 13, 14 are in the closed position.
  • This state is also referred to as the secured state, since, due to the closed position of the two squeezing elements 13, 14, the medium cannot be supplied to a consumer. For the secured state, it would also be sufficient if only the lower pinch element 14 were in the closed position.
  • the system 1 is shown in an alternating state in FIG. 3, in which the two squeezing elements 13, 14 are also in the open position.
  • the storage container 3 can be replaced, which when using the system 1 for enteral nutrition, e.g. to be carried out once a day.
  • the system 1 is shown in the state in which the storage container 13 is filled.
  • the upper pinch element 13 is in its open position, whereas the lower pinch element 14 is in the closed position.
  • the lower diode measuring unit 7 first detects the lower fill level 9 and delivers it to the Control unit to signal in this regard. The incoming medium fills the storage container 3 further.
  • the medium flows into the storage container 3 via the inflow device 4 until the medium has reached the upper fill level 8.
  • a corresponding detection signal is sent to the control unit ST by the upper diode measuring unit and, as a result, the upper squeeze element 13 is moved from the open position into the closed position, so that no further inflow of the medium takes place.
  • the lower squeezing element 14 is opened by actuating the lower actuating element 11 by means of an actuating signal supplied by the control unit ST, so that the medium volume contained in the storage container 3 is passed to the consumer, e.g. a patient that can drain.
  • This process is only interrupted when the lower diode measuring device 7 detects that the lower fill level 9 has been reached, as is indicated at 9 in FIG. 6.
  • the lower squeeze element 14 is moved from its open position into its closed position. Then the storage container 3 can be filled again.
  • the system 1 thus makes it possible to carry out a plurality of filling and drainage cycles of the storage container 3 which are predetermined by the control unit ST, the time interval between two drainage cycles being freely selectable.
  • the system 1 according to the invention is therefore particularly well suited for enteral nutrition, in that precisely metered volumes of liquid foods with a time-defined specification over a desired period of time, e.g. one day, after the desired parameters have been set once, without further intervention in the system, and can be administered to a patient.
  • the actuators 10, 11 can be used with suitable ones Detection means are provided in order to trigger an alarm signal at the control unit ST or to switch off the system in the event of a malfunction of an actuating element.
  • the system can be equipped with an additional battery as an emergency generator.
  • FIG. 7 shows an embodiment of the storage container 3 with a ventilation device 17.
  • the storage container 3 is slightly conical.
  • a cap 15 can be mounted on the storage container 3 and is connected to the inflow device 4.
  • the storage container 3 can be designed as a drop chamber.
  • the ventilation device 17 is held on a projection 18 of the cap 15 via a holding element 19.
  • the system 1 according to the invention can be equipped with additional diode measuring units for the detection of further fill level heights, so that not only a volume is defined corresponding to the lower and upper fill level height, but two or more sub-volumes are defined in the storage container, which are controlled according to the control of the Crushing elements 13, 14 can be released in succession by the control unit ST.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention concerne un système (1) servant à doser et acheminer un agent liquide, en particulier pour l'alimentation entérale dans le cadre d'applications médicales. Ce système comprend un réservoir de stockage (3) possédant un volume déterminé et présentant un dispositif d'alimentation (4) et un dispositif d'évacuation (5) de l'agent, l'alimentation de l'agent dans le réservoir de stockage (3) et son évacuation dudit réservoir ayant lieu sous l'effet de la force de gravité. Un dispositif de détection, se présentant p. ex. sous la forme d'une paire de dispositifs de mesure à diodes (6, 7) placés à distance l'un de l'autre, sert à déterminer au moins un niveau de remplissage inférieur et au moins un niveau de remplissage supérieur (8, 9) de l'agent dans le réservoir de stockage (3) et à émettre des signaux de détection correspondants. Des organes d'actionnement contrôlables (10, 11) servent à fermer et à ouvrir le dispositif d'alimentation (4) et le dispositif d'évacuation (5), respectivement, les signaux de détection du dispositif de détection (6, 7) pouvant être fournis à une unité de commande interne ou externe en vue de la transmission de signaux de commande aux organes d'actionnement contrôlables (10, 11) en fonction des signaux de détection conformément à un déroulement de programme prédéterminé. Ce système permet de fournir des aliments à un patient par voie entérale avec un dosage volumétrique précis. Il ne nécessite pas de pompe d'alimentation.
EP04739958A 2003-06-18 2004-06-16 Systeme pour doser et acheminer un agent liquide, en particulier pour l'alimentation enterale Withdrawn EP1633416A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20309513U DE20309513U1 (de) 2003-06-18 2003-06-18 System zum Dosieren und Zuführen eines flüssigen Mediums, insbesondere für die enterale Ernährung
PCT/EP2004/006495 WO2004110529A1 (fr) 2003-06-18 2004-06-16 Systeme pour doser et acheminer un agent liquide, en particulier pour l'alimentation enterale

Publications (1)

Publication Number Publication Date
EP1633416A1 true EP1633416A1 (fr) 2006-03-15

Family

ID=28051552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04739958A Withdrawn EP1633416A1 (fr) 2003-06-18 2004-06-16 Systeme pour doser et acheminer un agent liquide, en particulier pour l'alimentation enterale

Country Status (5)

Country Link
US (1) US20060200094A1 (fr)
EP (1) EP1633416A1 (fr)
JP (2) JP2006527614A (fr)
DE (1) DE20309513U1 (fr)
WO (1) WO2004110529A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8523797B2 (en) * 2008-05-08 2013-09-03 Hospira, Inc. Automated point-of-care fluid testing device and method of using the same
US20150133861A1 (en) 2013-11-11 2015-05-14 Kevin P. McLennan Thermal management system and method for medical devices
US20150277447A1 (en) * 2014-03-28 2015-10-01 Bray International, Inc. Pressure Independent Control Valve for Small Diameter Flow, Energy Use and/or Transfer
US10143795B2 (en) 2014-08-18 2018-12-04 Icu Medical, Inc. Intravenous pole integrated power, control, and communication system and method for an infusion pump
AU2016267763B2 (en) 2015-05-26 2021-07-08 Icu Medical, Inc. Disposable infusion fluid delivery device for programmable large volume drug delivery
CN109846716A (zh) * 2019-01-31 2019-06-07 浙江迈帝康医疗器械有限公司 一种营养泵、输液器、控制阀及液体控制方法
USD939079S1 (en) 2019-08-22 2021-12-21 Icu Medical, Inc. Infusion pump
USD1052728S1 (en) 2021-11-12 2024-11-26 Icu Medical, Inc. Medical fluid infusion pump

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
DE2855270A1 (de) 1978-12-21 1980-07-03 Walter Koss Ernaehrungspumpe
US4262668A (en) * 1979-04-06 1981-04-21 Baxter Travenol Laboratories, Inc. Fixed volume infusion device
US4551134A (en) * 1982-08-06 1985-11-05 Nuvatec, Inc. Intravenous set
DE3611112A1 (de) 1986-01-10 1987-07-16 Fresenius Ag Ernaehrungssystem fuer die enterale ernaehrung
DE3637771C1 (de) * 1986-11-06 1987-12-10 Braun Melsungen Ag Infusionsvorrichtung
US4921480A (en) * 1988-11-21 1990-05-01 Sealfon Andrew I Fixed volume infusion device
IL120651A (en) 1997-04-11 2001-06-14 Nestle Sa Administration of liquid to a patient

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004110529A1 *

Also Published As

Publication number Publication date
US20060200094A1 (en) 2006-09-07
JP3134917U (ja) 2007-08-30
WO2004110529A1 (fr) 2004-12-23
JP2006527614A (ja) 2006-12-07
DE20309513U1 (de) 2003-09-11

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