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WO2024023097A1 - Dispositif de détection d'extravasation - Google Patents

Dispositif de détection d'extravasation Download PDF

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Publication number
WO2024023097A1
WO2024023097A1 PCT/EP2023/070597 EP2023070597W WO2024023097A1 WO 2024023097 A1 WO2024023097 A1 WO 2024023097A1 EP 2023070597 W EP2023070597 W EP 2023070597W WO 2024023097 A1 WO2024023097 A1 WO 2024023097A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic material
detection device
extravasation
cuff
measuring means
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.)
Ceased
Application number
PCT/EP2023/070597
Other languages
English (en)
Inventor
Oltjon DIMNI
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.)
Fresenius Kabi Deutschland GmbH
Original Assignee
Fresenius Kabi Deutschland GmbH
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 Fresenius Kabi Deutschland GmbH filed Critical Fresenius Kabi Deutschland GmbH
Priority to EP23748751.7A priority Critical patent/EP4561438A1/fr
Publication of WO2024023097A1 publication Critical patent/WO2024023097A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
    • A61B5/1073—Measuring volume, e.g. of limbs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4836—Diagnosis combined with treatment in closed-loop systems or methods
    • A61B5/4839—Diagnosis combined with treatment in closed-loop systems or methods combined with drug delivery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6824—Arm or wrist
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6828—Leg
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/683—Means for maintaining contact with the body
    • A61B5/6831—Straps, bands or harnesses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient; User input means
    • A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0247—Pressure sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0261—Strain gauges
    • A61B2562/0266—Optical strain gauges
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient; User input means
    • A61B5/7405—Details of notification to user or communication with user or patient; User input means using sound
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient; User input means
    • A61B5/742—Details of notification to user or communication with user or patient; User input means using visual displays

Definitions

  • the invention relates to an extravasation detection device according to claim 1 , and to a method of detecting an extravasation according to claim 14.
  • Extravasation detection devices typically employ a cuff comprising an elastic material.
  • the cuff is typically adapted to be worn around a limb of a patient and is adapted to deform to accommodate for changes in the size of the limb.
  • Extravasation is commonly used in the medical field to refer to an accidental infusion or leakage of an injection fluid such as a therapeutic agent or a contrast medium into tissue surrounding a blood vessel rather than to an infusion into the blood vessel itself. Extravasation can cause serious injury to patients. For example, an accidental infusion of a cytostatic agent administered to stop the growth of cancer cells in normal tissue will damage the normal tissue and cause adverse effects including cell cycle arrest, senescence, mitotic catastrophe, and inflammatory responses and fibrosis at the tissue level.
  • EP 2 012 670 A2 describes a device to detect extravasation of a contrast medium from a patient during a medical injection procedure.
  • the device can be attached to the patient's hand or other injection site.
  • extravasation detection device comprises a force sensor that is encased in a plastic housing with a sensor load platform that is exposed to atmosphere and enclosed in a flexible rubber housing.
  • a device comprising rigid components such as a force sensor encased in a plastic housing is uncomfortable to wear for the patient. Also, rigid components may exert further pressure on the swelling caused by the extravasation, and hence can cause further damage.
  • the device comprises: a cuff comprising an elastic material adapted to be worn around a limb of a patient, wherein the cuff is adapted to deform to accommodate changes in the size of the limb, and at least one measuring means connected to a section of the elastic material and adapted to deform with the section of the elastic material to detect an expansion of the section of the elastic material.
  • the cuff can be an encircling strip or bracelet-like band of elastic material worn around the limb of the patient and can have the shape of a Tourniquet. Also, the cuff can be made from a single-piece of elastic material forming a seamless loop, or can have two end sections on opposite ends of a strip of elastic material that can be removably joined together.
  • the limb of the patient can be the patient’s head, arm, leg, or other portions of the patient’s body.
  • the term “limb” can be substituted with the term “extremity”.
  • the cuff can fit tightly around the limb and can be in contact with the skin of the patient so that a swelling of the limp caused by an extravasation causes an elastic deformation of the cuff, wherein the circumference of the cuff can increase with the swelling.
  • the measuring means can be adhesively attached to a section of the elastic material or can be enclosed by the elastic material, for example by casting the elastic material around the measuring means.
  • the measuring means is adapted to deform by a same or similar degree as the section of the elastic material it is attached to. Deformation can take place in at least one degree of freedom.
  • the measuring means can be adapted to change an intrinsic property, such as an electrical resistance, for deducing the degree of deformation by monitoring the change in value of the intrinsic property, such as the resistance value, over time.
  • the section of the elastic material can essentially correspond to the outer geometry of the measuring means, for example to an area of the elastic material the measuring means is in contact with.
  • the measuring means can deform by a same or similar degree as the section of the elastic material it is attached to, the utilization of rigid components can be avoided making wearing it more comfortable for the patient while receiving an infusion.
  • the device can be advantageously manufactured in a straightforward manner, for example in a single-stage casting process.
  • the elastic material comprises a silicone material, a rubber material, or a stretchable fabric material.
  • the cuff can have a rectangular or circular cross-section.
  • the cuff can be shaped from cheap and readily available elastic material such as silicone or rubber using a moulding process in a variety of sizes and colours.
  • the cuff can be realized with an elastic fabric material, such as for example a spandex material.
  • the extravasation detection comprises at least one further measuring means connected to a further section of the elastic material and adapted to deform with the further section of the elastic material to detect an expansion of the further section of the elastic material.
  • the further measuring means can be identical or similar to the measuring means and can be arranged, in a circumferential direction of the cuff, opposite to the measuring means on a further section of the elastic material.
  • the further measuring means can be arranged, in a circumferential direction of the cuff, near the measuring means and separated from the measuring means by a predetermined space.
  • the cuff can then be arranged on the limb of the patient so that the measuring means are located on either side of the infusions site, i.e. left and right from the infusion site.
  • position markers can be arranged on the material of the cuff, e.g. printed on the material of the cuff, so that the measuring means can be accurately arranged around the infusion site.
  • the extravasation detection device comprises a plurality of further measuring means connected to respective further sections of the elastic material and which are adapted to deform with the further sections of the elastic material to detect an expansion of the further sections of the elastic material.
  • an extravasation can be detected even more accurately.
  • a plurality of measuring means e.g. more than 4 measuring means
  • the utilization of position markers, as described above, to enable medical staff to accurately place the cuff on the patient’s limb can be made redundant.
  • the measuring means comprises at least one strain gauge, in particular a resistive foil strain gauge, a fiber optic Bragg sensor, and/or a piezoelectric sensor.
  • the above-mentioned sensors offer high measurement sensitivity and precision, allow measurement over a wide measurement range, have a small form factor, are light weight, and are inexpensive.
  • the measuring means is at least partly, in particularly fully, embedded in the elastic material.
  • the term “embedded” can be used to refer to a situation where the measuring means is enclosed or encapsuled by the elastic material.
  • the measuring means can be arranged between two layers of the elastic material.
  • the same expansion characteristic can be achieved for the elastic material and the measuring means making detection of an extravasation yet more accurate.
  • the extravasation device comprises a processing means coupled to the measuring means which is adapted to: compare the detected expansion to at least one threshold value at subsequent time instances, and trigger an alarm event if the detected expansion exceeds the threshold value at one or at a predefined number of subsequent time instances.
  • the processing means can be realized as a processor that obtains in regular time instances data samples, for example resistance values, from the measuring means and stores the data samples in an associated memory.
  • the resistance values can be equivalent to a certain degree of deformation caused by a swelling of the patient’s limb.
  • the threshold value can be a predetermined parameter indicating the occurrence of an extravasation.
  • the threshold value can be a fixed value, or can be determined as a certain deviation of an intrinsic property of the measuring means. For example, if strain gauges are used as measuring means a change in their intrinsic electric resistance value can be seen as a deviation of an intrinsic property, i.e. deviation from the electric resistance value of the strain gauge before the infusion starts.
  • the initial resistance value can be used as a start value and a value reflecting an error margin can be added to the start value to obtain the threshold value.
  • the error margin can be a certain percentage of the start value that is added to the start value to avoid false alarms.
  • the measuring means can be also connected to each other in one example.
  • an alarm event can be triggered more reliably. Also, by not immediately triggering an alarm event when the detected expansion exceeds the threshold at one single time instance, but instead triggering the alarm event when the detected expansion exceeds the threshold value for a number of subsequent time instances, i.e. for a certain time period, prevents triggering false alarm events, which could be otherwise trigged by patient movement, muscle relaxation/tension or the like.
  • the processing means is adapted to provide the alarm event to an associated device, in particular to an infusion pump for infusing fluids into the patient.
  • the processing means can be directly connected to an infusion pump and can immediately, i.e. after the alarm event was triggered, provide the alarm event to the infusion pump, so that the infusion can stop infusing fluid into the patient to not cause any further damage to the patient.
  • the extravasation detection device comprises an alarm means coupled to the processing means and comprises an acoustic element and/or an optical element adapted to output an alarm based on receiving the alarm event from the processing means.
  • the processing means and the alarm means can be both realized as one single component or as separate components that are connected to each other.
  • the acoustic element can be, for example, realized as an acoustic element generating a buzzing noise and can be adapted to produce a clearly noticeable sound upon an alarm event is being triggered to notify medical staff that an extravasation has occurred I is presently occurring.
  • the alarm means can also comprise an optical element, such as for example at least one display or a light emitting diode, LED, to optically indicate the occurrence of the alarm event to the medical staff.
  • the optical element can comprise a plurality of LED’s that can all have a same colour or can have different colours to indicate the severity of the extravasation, i.e. the detected swelling. For example, depending on the number of subsequent time instances the threshold value is surpassed and/or by how far the detected expansion exceeds the threshold value, LED’s may subsequently light up to indicate the build-up of an extravasation.
  • the following colour scheme can be employed to indicate the build-up of an extravasation:
  • Red (alarm) threshold value is exceeded for certain number of time instances.
  • the device by informing the patient and/or medical staff early during an intermediate state that there is a risk of an extravasation to occur, the patient can be sensibilized to hold still, etc. In the latter case, the status might go back from the intermediate to the ok status, i.e. in case the threshold value is no longer exceeded. Therefore, the device is not only able to detect an extravasation but also to prevent the occurrence of an extravasation.
  • an alarm event can be reliably provided to the medical staff.
  • the processing means, and the alarm means are arranged on the circumference of the cuff.
  • processing means and the alarm means can be realized on a printed circuit board, PCB, comprised within a housing that is arranged on the circumference of the cuff.
  • processing means and the alarm means can be also comprised, at least partly, within the elastic material of the cuff.
  • the extravasation detection device comprises power means, in particular a battery.
  • the extravasation device comprises a power means.
  • the measuring means comprises a scale arranged, in particular printed, at least partially on the circumference of the cuff.
  • the scale may have a number of evenly spaced markings.
  • the spacing between two markings is 1 mm and a value in cm or inch is given every 10 markings.
  • the occurrence of an extravasation can even be detected in case of a malfunction of one of the electronic components of the extravasation detection device, or can be used instead of employing electronic components for extravasation detection.
  • the cuff comprising two end sections, a buckle to join the end sections, and quick release means for unbuckling the end sections.
  • a corresponding cuff can be quickly placed around the patient’s limb and can be adjusted to accommodate different limbs / differently sized limbs.
  • the invention also relates to method of detecting an extravasation, the method comprising the steps of: arranging a cuff comprising an elastic material around a limb of a patient, wherein the cuff is adapted to deform to accommodate changes in the size of the limb, and detecting, by at least one measuring means connected to a section of the elastic material and adapted to deform with the section of the elastic material, an expansion of the section of the elastic material.
  • the method can be conducted using an extravasation detection device as described herein.
  • the cuff and measuring means described herein can be components of the herein described extravasation device.
  • the extravasation device used by the method can employ some or all components of the extravasation device described herein.
  • the method further comprises the steps of: comparing, by a processing means, the detected expansion to at least one threshold value at subsequent time instances, and triggering, by the processing means, an alarm event if the detected expansion exceeds the threshold value at one or at a predefined number of subsequent time instances.
  • Fig. 1 shows a schematic drawing of an extravasation detection device according to an embodiment of the invention
  • Fig. 2 shows a schematic drawing of an extravasation detection device according to another embodiment of the invention.
  • Fig. 3 shows a method flow according to an embodiment of the invention.
  • Figure 1 shows a schematic drawing of an extravasation detection device 1.
  • the shown extravasation device 1 comprises a cuff 3 comprising an elastic material adapted to be worn around a limb of the patient and adapted to deform to accommodate for changes in the size of the limb.
  • the cuff 3 comprises a silicone material as elastic material.
  • the cuff can alternatively comprise a rubber material or a stretchable fabric material.
  • the cuff 3 comprises two end sections on opposite ends of a strip forming the cuff.
  • the two end sections can be removably joined together by a buckle 7.
  • the buckle 7 comprises quick release means 9 for unbuckling the end sections.
  • the cuff can be also made from a single-piece elastic material. Therefore, the buckle should be regarded as merely optional.
  • the extravasation detection device 1 further comprises four measuring means 5A - 5D each connected to a section of the elastic material and adapted to deform with the section of the elastic material to detect an expansion of the section of the elastic material.
  • four measuring means 5A - 5D are employed.
  • the skilled person would understand that the invention would also work with just one of the shown measuring means 5A connected to a section of the elastic material.
  • the measuring means 5A - 5D are realized in the shown embodiment as strain gauges that are located inside the elastic material, for example between layers of the elastic material. In other embodiments the strain gauges can be also attached to a surface of the elastic material, for example by means of an adhesive material. Also, the measuring means 5A - 5D can be alternatively or additionally realized as fiber optic Bragg sensors, and/or piezoelectric sensors.
  • the shown extravasation detection device 1 comprises a processing means 11 which is realized as a processor and which is coupled to the measuring means 5A - 5D.
  • the processing means 11 is adapted to compare detected expansion values obtained from the measuring means 5A - 5D to at least one threshold value at subsequent time instances and trigger an alarm event if the detected expansion values exceed the threshold value at one or at a predefined number of subsequent time instances.
  • an alarm means 13 coupled to the processing means 11 which comprises an acoustic element 131 to produce a sound upon triggering an alarm event to notify medical staff of the extravasation event.
  • the alarm means 13 further comprises optical elements 133A - 133N realized as LED lamps to optically indicate the occurrence of the alarm event to the medical staff.
  • the extravasation detection device 1 also comprises power means 15 realized as a battery.
  • a scale 17 is printed on a surface on the circumference of the cuff 3 to enable medical staff to optically determine the occurrence of an extravasation by identifying an increasing distance of the otherwise regular spaced markings.
  • FIG 2 shows a schematic drawing of an extravasation detection device 1 according to another embodiment of the invention.
  • the shown extravasation detection device 1 comprises a cuff 3 comprising an elastic material adapted to be worn around a limb of the patient and adapted to deform to accommodate for changes in the size of the limb such as the cuff 3 of the extravasation detection device 1 shown in figure 1.
  • the embodiment shown in figure 2 does not employ any electronic means such as strain gauges, etc. for detecting an extravasation.
  • the measuring means of the shown extravasation detection device is realized as a scale 17 that is printed on the circumference of the cuff 3.
  • the scale 17 comprises a number of evenly spaced markings.
  • the cuff 3 optionally comprises two end sections on opposite ends of a strip forming the cuff. As shown, the two end sections are joined together by a buckle 7, which comprises quick release means 9 for unbuckling the end sections.
  • FIG. 3 shows a method flow according to an embodiment of the invention.
  • the method 1000 comprises the following steps:
  • Arranging 1001 a cuff comprising an elastic material around a limb of a patient, wherein the cuff is adapted to deform to accommodate changes in the size of the limb, and Measuring 1003, by at least one measuring means connected to a section of the elastic material and adapted to deform with the section of the elastic material, an expansion of the section of the elastic material.
  • the method can also comprise further optional steps that are not essential for the invention, and which are therefore depicted in boxes delimitated by a dashed line:
  • the method further comprises the steps of: Comparing 1005, by a processing means, the detected expansion to at least one threshold value at subsequent time instances, and Triggering 1007, by the processing means, an alarm event if the detected expansion exceeds the threshold value at one or at a predefined number of subsequent time instances.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Physiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

Un dispositif de détection d'extravasation, comprenant : un manchon (3) comprenant un matériau élastique conçu pour être porté autour d'un membre d'un patient, le manchon (3) étant conçu pour se déformer pour s'adapter à des changements de la taille du membre, et au moins un moyen de mesure (5A-5D) relié à une section du matériau élastique et conçu pour se déformer avec la section du matériau élastique pour détecter une expansion de la section du matériau élastique. L'invention concerne également un procédé (1000) de détection d'une extravasation.
PCT/EP2023/070597 2022-07-25 2023-07-25 Dispositif de détection d'extravasation Ceased WO2024023097A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23748751.7A EP4561438A1 (fr) 2022-07-25 2023-07-25 Dispositif de détection d'extravasation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22186736 2022-07-25
EP22186736.9 2022-07-25

Publications (1)

Publication Number Publication Date
WO2024023097A1 true WO2024023097A1 (fr) 2024-02-01

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PCT/EP2023/070597 Ceased WO2024023097A1 (fr) 2022-07-25 2023-07-25 Dispositif de détection d'extravasation

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EP (1) EP4561438A1 (fr)
WO (1) WO2024023097A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853118A (en) * 1973-08-29 1974-12-10 Measurand Syst Swelling detector
EP2012670A2 (fr) 2006-04-19 2009-01-14 ACIST Medical Systems, Inc. Dispositif de detection d'extravasation
WO2018187027A1 (fr) * 2017-04-04 2018-10-11 Webb Medical LLC Pansement pour surveiller le gonflement à un site sélectionné sur le corps d'un patient et procédé de surveillance du gonflement à un site sélectionné sur le corps d'un patient
KR20220072157A (ko) * 2020-11-25 2022-06-02 신한대학교 산학협력단 혈관외유출 검출 및 감시장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853118A (en) * 1973-08-29 1974-12-10 Measurand Syst Swelling detector
EP2012670A2 (fr) 2006-04-19 2009-01-14 ACIST Medical Systems, Inc. Dispositif de detection d'extravasation
US20090204070A1 (en) * 2006-04-19 2009-08-13 Acist Medical Systems, Inc. Extravasation detection device
WO2018187027A1 (fr) * 2017-04-04 2018-10-11 Webb Medical LLC Pansement pour surveiller le gonflement à un site sélectionné sur le corps d'un patient et procédé de surveillance du gonflement à un site sélectionné sur le corps d'un patient
KR20220072157A (ko) * 2020-11-25 2022-06-02 신한대학교 산학협력단 혈관외유출 검출 및 감시장치

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