KR101686031B1 - System for drug injection - Google Patents

System for drug injection Download PDF

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Publication number
KR101686031B1
KR101686031B1 KR1020150126377A KR20150126377A KR101686031B1 KR 101686031 B1 KR101686031 B1 KR 101686031B1 KR 1020150126377 A KR1020150126377 A KR 1020150126377A KR 20150126377 A KR20150126377 A KR 20150126377A KR 101686031 B1 KR101686031 B1 KR 101686031B1
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KR
South Korea
Prior art keywords
drug
hose
density
cylinder
control device
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KR1020150126377A
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Korean (ko)
Inventor
장호종
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한국과학기술원
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Priority to KR1020150126377A priority Critical patent/KR101686031B1/en
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Publication of KR101686031B1 publication Critical patent/KR101686031B1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168Means 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
    • A61M5/16831Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168Means 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
    • A61M5/16877Adjusting flow; Devices for setting a flow rate
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168Means 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
    • A61M5/172Means 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 electrical or electronic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168Means 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
    • A61M5/172Means 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 electrical or electronic
    • A61M5/1723Means 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 electrical or electronic using feedback of body parameters, e.g. blood-sugar, pressure

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Veterinary Medicine (AREA)
  • Hematology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Diabetes (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The present invention relates to a drug injection system which can include a cylinder to store at least one drug; a Y-shaped hose to form a flow path simultaneously coupled to an air discharge device, an injection needle, and the cylinder; multiple valves to determine open and close of the flow paths to each of the air discharge device and the injection needle; at least one density sensor adhered to the outside of the hose to sense density of the drug passed through the hose; and a control device to collect information about drug injection state and inform to a user, and at the same time, to check at least one of presence and absence of air introduction, presence and absence of backflow of blood, and error of drug mixing ratio, and to control operation of each of the multiple valves in real-time and inform to a user.

Description

System for drug injection < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drug injection system, and more particularly, to a drug injection system capable of dramatically increasing the stability of a drug injection operation by monitoring and controlling the drug injection state in real time.

Generally, a drug infusion system is a medical device that supplies a medical fluid containing a drug to a vein of a patient.

In the conventional drug infusion system, there is a risk that, when the administration of the drug is terminated, if the injection needle inserted into the vein of the patient is not immediately removed, the blood may flow back through the injection needle or air may be injected into the body to cause embolism.

In addition, since the time required for injecting the drug into the patient through the intravenous injection is relatively long, there has been a problem that the caregiver or the medical staff must frequently check the dose and the administration state of the sap. In addition, in the process of separating the hose connected to the drug infusion system to fill the fluid of the drug infusion system, the medical staff could enter the patient's blood vessel through the hose to cause embolism.

Korean Patent No. 10-0922839 (Oct. 14, 2009)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for preventing the introduction of air into a patient's blood vessel, ≪ / RTI >

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a drug delivery system comprising: a cylinder for storing at least one drug; A Y-shaped hose forming an air vent, an injection needle, and a flow path that is connected to the cylinder simultaneously; A plurality of valves for determining whether to open or close the flow path to the air discharging device and the injection needles, respectively; At least one density sensor attached to an outer surface of the hose to sense the density of the drug flowing through the hose; And information on a drug infusion situation to inform the user and at least one of air inflow, blood reflux, and drug mixture rate error is checked based on the drug density sensed by the sensor, Provided is a drug injection system including a control device for real-time controlling and user-guiding the operation of each of the valves.

Wherein the control device further includes a flow path to the air discharging device in addition to the cylinder and the needle in the inflow of air to form only a flow path between the cylinder and the needle in normal operation, When a drug having a mixing ratio is injected into the patient, the flow path to the injection needle can be closed.

The control device may further include a function of collecting information on a drug injection state and an error occurrence state and providing the collected information to an external device.

The hose comprising: a first hose region having one side connected to the cylinder; A second hose region having one side connected to the other side of the first hose and the other side connected to the air discharge device; And a third hose region having one side connected to the other side of the first hose and the other side connected to the injection needle.

The control device additionally checks the position of occurrence of the density change phenomenon when the blood backflow state and the drug mixing rate error state are simultaneously detected. If the density change phenomenon is detected only in the third hose region, the control device determines that the backflow phenomenon has occurred , And when the density change phenomenon is simultaneously detected in the first hose region and the third hose region, it can be determined that a drug mixing rate error phenomenon has occurred.

Wherein the density sensor comprises: a body implemented in the form of a forceps; A light emitting element and a light receiving element attached to the body so as to face each other at a portion where the hose contacts; And a signal processing unit built in an inner space of the body for calculating and reporting the drug density by comparing and analyzing the amount of light emitted from the light emitting element and the light receiving amount of the light receiving element.

In addition, the system may further comprise a pressurizing device for applying pressure for drug movement to the cylinder, and the control device may further comprise a function of controlling the operation of the pressurizing device based on the drug density sensed through the sensor have.

The system further comprises a plurality of cylinder valves capable of regulating the supply amount of each of a plurality of drugs injected into the cylinder, and controls the opening amount of each of the plurality of cylinder valves based on the drug density sensed through the sensor And the like.

As described above, according to the present invention, when a drug is injected into a patient's blood vessel, air is introduced into the patient's blood vessel, the patient's blood flows backward, and a drug having a mixing ratio is prevented from being injected into the human body, So that stability of the drug injection operation can be dramatically increased.

In addition, the system promptly and visually notifies various error conditions occurring during the drug injection operation so that the medical staff or the caregiver can perform the action more quickly.

In addition, it is possible to provide various information about the drug injection status to an external device such as a hospital server and a medical terminal, so that the external device can perform various additional operations utilizing the information.

1 and 2 are views showing a drug infusion system according to an embodiment of the present invention.
3 is a view showing a Y-shaped hose according to an embodiment of the present invention.
4 is a view showing a density sensor according to an embodiment of the present invention.
5 is a diagram showing a detailed configuration of a control apparatus according to an embodiment of the present invention.
6 is a diagram illustrating a drug infusion system according to another embodiment of the present invention.
7 is a view illustrating a drug infusion system according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art to which the present invention pertains. Only. Therefore, the definition should be based on the contents throughout this specification.

1 and 2 are views showing a drug infusion system according to an embodiment of the present invention.

1 and 2, the drug infusion system of the present invention includes an air discharge device 10, a cylinder 20, a Y-shaped hose 30, a plurality of valves 41 and 42, at least one density sensor 50, and a control device 60, and the like.

The air discharge device 10 is connected to one end of the hose 40 so as to discharge the air present in the liquid flowing through the hose 40.

The cylinder 20 allows at least one drug to be mixed or stored before it is supplied to the hose 40.

The Y-shaped hose 30 forms a flow path to be connected to the air discharge device 10, the cylinder 20 and the injection needle 25 through which the medicine supplied from the cylinder 20 is supplied to the injection needle 25 and air To the discharge device (10).

3, the Y-shaped hose 30 of the present invention includes a first hose region 31 having one side connected to the cylinder 20, one side connected to the other side of the first hose region 31, A second hose region 32 having the other side connected to the air discharge device and a third hose region 33 having one side connected to the other side of the first hose region 31 and the other side connected to the injection needle 25 ). ≪ / RTI >

The plurality of valves 41 and 42 may be implemented by an electronic solenoid valve or the like that communicates in a wired or wireless manner and may be distributed and arranged in the hose 30 and controlled by the air discharge device 10 Thereby determining whether or not the drug is supplied to each of the needles 25. That is, the first valve 41 is disposed in the second hose region 32 to which the air exhausting device 10 is connected to determine whether to supply the medication to the air exhausting device 10, and the second valve 42 Is disposed in the third hose region (33) to which the injection needle (25) is connected so as to determine whether or not to supply the injection needle (25) with the drug.

The density sensor 50 senses the density of the drug flowing through the hose 30 and informs the control device 60 of the sensing result in a wired or wireless manner.

However, it is preferable that the density sensor of the present invention is implemented as a portable device that can be attached to the outer surface of the hose 30 so that the attachment position can be easily moved according to the user's needs. 4, the light emitting device 52 and the light receiving device 53, which are attached to the body 51 so as to face each other at a portion where the hose 30 is in contact with the body 51, And a signal processing unit 54 built in the internal space of the body 51 for comparing and analyzing the light emission amount of the light emitting element 54 and the light receiving amount of the light receiving element 55 to calculate and report the drug density. There will be.

One density sensor 50 is preferably disposed in the first hose region 31 and a plurality of density sensors 50 are disposed in the first hose region 31 31 and the third hose region 33, as shown in FIG.

The control device 60 allows overall control of the operation of the drug infusion system. Particularly, information on the drug infusion situation (for example, time required, progress, etc.) is collected and guided to the user, and based on the drug density sensed through the density sensor 50, And the occurrence of a drug mixing rate error are additionally checked to control the operation of the first and second valves 41 and 42 in real time.

For example, during normal operation, only the flow path between the cylinder 20 and the injection needle 25 is formed through the first and second valves 41 and 42. When the air is introduced into the cylinder 20 and the injection needle 25 And the air present in the medicament in the hose 30 is exhausted to the outside by the air exhausting device 10. [ When the blood is refluxed or a drug having an erroneous mixing ratio is injected into the patient, the flow path to the injection needle 25 is closed through the first and second valves 41 and 42 so that the drug is injected through the injection needle 25 Immediately block the injection into the patient.

5 is a diagram showing a detailed configuration of a control apparatus according to an embodiment of the present invention.

5, the controller 60 of the present invention includes an air inflow detecting unit 61, a blood backflow detecting unit 62, a drug mixing ratio error detecting unit 63, a main control unit 64, a data input / output unit 65, A communication unit 66, and the like.

The air inflow detecting unit 61 has information on a density variation pattern due to air inflow and analyzes the sensed drug density variation pattern through the density sensor 50 based on the information.

The blood backflow detection unit 62 has information on the density change pattern according to the backflow of blood and analyzes the sensed drug density change pattern through the density sensor 50 based on the information.

The drug mixing ratio error detector 63 stores the drug density information according to the mixing ratios of a plurality of drugs in a database. When the information about the types and mixing ratios of the drugs injected into the patient is notified through the main control unit 64, the database is searched to obtain the drug density information, and then the drug density sensed through the density sensor 50 This is a comparative analysis. As a result of the comparative analysis, if the drug density error is out of the predetermined tolerance, the drug mixing rate error state is immediately confirmed and notified.

The main control unit 64 collects various kinds of information related to the drug injection status, and guides the user through the data input / output unit 65 in an audiovisual manner.

Based on the detection results of the air inflow detecting unit 61, the blood backflow detecting unit 62, and the drug mixing ratio error detecting unit 63, the control unit 50 controls the first and second valves 41 and 42 At the same time, a warning message for notifying the current error condition is generated and outputted through the data input / output unit 65, so that the guardian and the medical personnel can immediately respond thereto.

In addition, the main control unit 64 provides various information and warning messages relating to the drug injection status to an external device such as a hospital server or a medical terminal in real time, thereby enabling the hospital server or the medical care terminal to additionally perform various additional operations utilizing the information You can do it.

The data input / output unit 65 is provided with various data input / output devices such as a monitor, a keyboard, a button, a speaker, a light emitting device, and the like, and outputs various kinds of information transmitted from the main control unit 64, Thereby obtaining various control values.

The communication unit 66 forms a communication channel with an external device such as a hospital server and a medical terminal, and thereby supports data communication between the control device 60 and an external device.

For reference, air has an extremely low density value, while the density of blood can have a density value similar to that of a particular drug.

Therefore, the pattern of density change due to air inflow can be easily distinguished from the pattern of density change due to errors of blood reflux or drug mixing rate, but it may be difficult to distinguish density change patterns due to blood reflux and drug mixing rate errors .

However, in the case of blood reflux, the drug mixing rate error is generated intensively in the third hose region 33 connected to the injection needle, while the drug mixing rate error is generated throughout the entire hose region 31 to 33.

In the present invention, after the plurality of density sensors 50 are dispersedly disposed in the first hose region 31 and the third hose region 33, the main control unit 64 determines whether the blood- , It is possible to distinguish whether the current error is due to blood reflux or drug mixture rate error. That is, when the density change phenomenon is detected only in the third hose region 33, and when the density change phenomenon is simultaneously detected in the first hose region 31 and the third hose region 33, It can be determined that an error phenomenon has occurred.

6 is a diagram illustrating a drug infusion system according to another embodiment of the present invention.

Referring to FIG. 6, the drug infusion system of the present invention includes an air outlet device 10, a cylinder 20, a Y-shaped hose 30, a plurality of valves 41 and 42, at least one density sensor 50 and the control device 60 as well as a pressure device 70 for applying a predetermined pressure to the cylinder 20 for drug movement.

In this case, the control device (particularly, the main control part 64) controls the operation of the pressurizing device 70 based on the detection results of the air inflow detecting part 61, the blood backflow detecting part 62 and the drug mixing ratio error detecting part 63 It also allows for additional control.

That is, when at least one of an air inflow state, a blood reflux state, and a drug mixture rate error state occurs, the operation of the pressurizing device 70 is immediately stopped to block the supply of the medicine to the hose 30 itself.

7 is a view illustrating a drug infusion system according to another embodiment of the present invention.

7, the drug infusion system according to another embodiment of the present invention includes an air discharge device 10, a cylinder 20, a Y-shaped hose 30, a plurality of valves 41 and 42, At least one density sensor 50 and a control device 60 as well as a plurality of cylinder valves 81 and 82 capable of regulating the supply amount of each of a plurality of drugs injected into the cylinder 20 .

That is, the controller (particularly, the main control unit 64) of the present invention extracts the drug concentration information from the drug concentration information detected by the drug concentration ratio error detector 63, compares the drug concentration with the drug mixture rate inputted by the user, It is also possible to automatically adjust the opening amount of each of the plurality of cylinder valves 81, 82 based on the calculation of the supply mistake of each of the drugs.

According to the drug infusion system configured as described above, the drug mixing rate error situation can be immediately canceled without the need of a separate external party, thereby maximizing the ease of use.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It is to be understood that the scope of the invention is to be construed as being limited only by the following claims and their equivalents.

Claims (8)

A cylinder for storing at least one drug;
A Y-shaped hose forming an air vent, an injection needle, and a flow path that is connected to the cylinder simultaneously;
A plurality of valves for determining whether to open or close the flow path to the air discharging device and the injection needles, respectively;
At least one density sensor attached to an outer surface of the hose to sense the density of the drug flowing through the hose; And
Collects information on the drug infusion status and informs the user of the drug infusion condition, and confirms at least one of air inflow, blood reflux, and drug mixture rate error based on the drug density sensed by the sensor, And a control device for real-time controlling and user-guiding each operation,
The hose
A first hose region having one side connected to the cylinder;
A second hose region having one side connected to the other side of the first hose and the other side connected to the air discharge device; And
And a third hose region having one side connected to the other side of the first hose and the other side connected to the injection needle,
The control device
When the density change phenomenon is detected only in the third hose region, it is determined that the blood backflow phenomenon has occurred. When the density change phenomenon is detected only in the third hose region, Wherein when the concentration change phenomenon is simultaneously detected in the third hose region and the third hose region, it is determined that a drug mixing rate error phenomenon has occurred.
The control device according to claim 1, wherein the control device
A flow path to the air discharging device is additionally formed in addition to the cylinder and the needle in the inflow of air to form a flow path of blood or a drug having a wrong mixing ratio And closes the flow path to the injection needle when injected into the patient.
The control device according to claim 1, wherein the control device
Further comprising a function of collecting information on a drug injection situation and an error occurrence situation and providing the collected information to an external device.
delete delete The apparatus of claim 1, wherein the density sensor
A body implemented in a pincer shape;
A light emitting element and a light receiving element attached to the body so as to face each other at a portion where the hose contacts;
And a signal processing unit built in an inner space of the body for calculating and reporting the drug density by comparing and analyzing the light emission amount of the light emitting element and the light receiving amount of the light receiving element.
The method according to claim 1,
Further comprising a pressurizing device for applying pressure for drug movement to the cylinder,
The control device
Further comprising a function of controlling the operation of the pressure device based on the drug density sensed by the sensor.
The method according to claim 1,
Further comprising a plurality of cylinder valves capable of regulating a supply amount of each of a plurality of drugs injected into the cylinder,
Further comprising a function of controlling the opening amount of each of the plurality of cylinder valves based on the drug density sensed by the sensor.
KR1020150126377A 2015-09-07 2015-09-07 System for drug injection KR101686031B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109316648A (en) * 2018-09-13 2019-02-12 符霞军 A kind of disposable transfusion device being automatically turned off
KR20190125033A (en) * 2018-04-27 2019-11-06 (주)퀀텀플라즈마 Skin care apparatus and method using plasma and skin improving agent
KR20200055337A (en) * 2018-11-13 2020-05-21 연세대학교 산학협력단 Medical drug supply device having air removal element
WO2023106631A1 (en) * 2021-12-07 2023-06-15 사회복지법인 삼성생명공익재단 Drug administering device

Citations (5)

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Publication number Priority date Publication date Assignee Title
WO1996040330A1 (en) * 1995-06-07 1996-12-19 Deka Products Limited Partnership Intravenous-line air-elimination system
KR200361499Y1 (en) * 2004-06-19 2004-09-13 최용태 A sensing and notifying device for the low­water level of Ringer solution
KR20070026593A (en) * 2004-06-15 2007-03-08 말린크로트, 인코포레이티드 Automated dispensing system and associated method of use
KR100922839B1 (en) 2008-04-21 2009-10-20 정세용 Device for alarming a situation of the intravenous fluid injection and controlling method for the same
US8795225B2 (en) * 2008-09-29 2014-08-05 Covidien Lp Fluid detection in an enteral feeding set

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996040330A1 (en) * 1995-06-07 1996-12-19 Deka Products Limited Partnership Intravenous-line air-elimination system
KR20070026593A (en) * 2004-06-15 2007-03-08 말린크로트, 인코포레이티드 Automated dispensing system and associated method of use
KR200361499Y1 (en) * 2004-06-19 2004-09-13 최용태 A sensing and notifying device for the low­water level of Ringer solution
KR100922839B1 (en) 2008-04-21 2009-10-20 정세용 Device for alarming a situation of the intravenous fluid injection and controlling method for the same
US8795225B2 (en) * 2008-09-29 2014-08-05 Covidien Lp Fluid detection in an enteral feeding set

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190125033A (en) * 2018-04-27 2019-11-06 (주)퀀텀플라즈마 Skin care apparatus and method using plasma and skin improving agent
KR102055123B1 (en) * 2018-04-27 2019-12-12 (주)퀀텀플라즈마 Skin care apparatus and method using plasma and skin improving agent
CN109316648A (en) * 2018-09-13 2019-02-12 符霞军 A kind of disposable transfusion device being automatically turned off
KR20200055337A (en) * 2018-11-13 2020-05-21 연세대학교 산학협력단 Medical drug supply device having air removal element
KR102144192B1 (en) * 2018-11-13 2020-08-12 연세대학교 산학협력단 Medical drug supply device having air removal element
WO2023106631A1 (en) * 2021-12-07 2023-06-15 사회복지법인 삼성생명공익재단 Drug administering device

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