KR101680580B1 - Apparatus for detecting extrevasation - Google Patents

Apparatus for detecting extrevasation Download PDF

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Publication number
KR101680580B1
KR101680580B1 KR1020150138353A KR20150138353A KR101680580B1 KR 101680580 B1 KR101680580 B1 KR 101680580B1 KR 1020150138353 A KR1020150138353 A KR 1020150138353A KR 20150138353 A KR20150138353 A KR 20150138353A KR 101680580 B1 KR101680580 B1 KR 101680580B1
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South Korea
Prior art keywords
attachment
pressure sensor
fixed
attachment member
skin
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KR1020150138353A
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Korean (ko)
Inventor
권대철
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신한대학교 산학협력단
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    • 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

Abstract

The present invention relates to an extravasation sensing device capable of more accurately and rapidly sensing occurrence of extravasation and skin deformation in various regions caused thereby by simultaneously using a pressure sensor and a strain gauge. The extravasation sensing device according to a preferable embodiment of the present invention comprises: an attaching member attached on skin of a region to which a blood vascular injection agent is to be administrated, having a first attaching unit formed in the center thereof, and having a second attaching unit extended from the first attaching unit in a radius direction at every regular intervals; a pressure sensor fixed to the first attaching unit of the attaching member, and early sensing occurrence of extravasation by measuring an increase in pressure when extravasation occurs; and a strange gauge respectively fixed to the second attaching unit of the attaching member, and sensing skin deformation in various regions by measuring each of deformation degrees when extravasation occurs.

Description

[0001] APPARATUS FOR DETECTING EXTRAVATION [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an extracorporeal blood flow detecting apparatus for early detection of a blood vessel injecting agent such as a contrast agent or a sap flowing out of a blood vessel, and more particularly, The present invention relates to an extracorporeal leak detecting device for detecting whether or not a leak occurs and for detecting whether or not the skin is deformed at various positions in a more accurate and prompt manner.

Generally, CT (CT) shows the human body's cross-section and monolayer, so it has the advantage of showing the human tissue more clearly and precisely than the conventional X-ray. Has played a very important role in the diagnosis of cancer since.

Contrast agents injected into the blood vessels during CT scan have the advantage of clarifying the site of the test but they are accompanied by side effects such as allergic reactions such as nausea, vomiting, urticaria and extravasation.

In recent years, injectors injecting contrast agents to increase the injection rate of contrast agents have been increasingly developed into high-pressure equipment, resulting in an increased risk of extravasation of contrast agents into the surrounding tissue instead of entering the blood vessels Trend.

The causes of extravasation accidents due to injection of contrast agents vary widely from accidental needle injections to excessive administration of contrast agents.

If the degree of extracranial effusion is not severe, it may be necessary to perform simple medical procedures such as cold-keeping or bandage wrapping to alleviate edema and pain. However, if the patient does not feel any abnormality or the pain persists, In severe cases, the skin tissue may be deformed or necrotized due to complications related to extravasation.

The problem of blood vessels and spillage occurs not only in contrast agents but also in the injection of vascular injections such as sap,

As an example of a method for early detection of the extravasation of blood vessel injections such as contrast media or liquids, Korean Patent Laid-Open No. 10-2001-0032477 (published Apr. 25, 2001) discloses a method for introducing an injection solution into a patient's conduit system An electrode patch for use in a non-permeable device for detecting an extravasation that may occur when inserting an end of a needle into a patient, the patch comprising: a body adapted to be attached to the skin of a patient; Wherein the inner electrode pair is spaced apart from the other one side on one side of the center line to define a range of the measurement region, The measurement area has a shape and dimensions including the needle tip within the area and is large enough to adjust the placement of the patch covering the needle tip, Wherein each of the outer electrode pairs is directed outwardly of the inner electrode with respect to the centerline and when the patch adheres to the skin of the patient, energization of the outer electrode is effected, Provides a field for inducing a signal in the measurement region to the internal electrode which is a function of the impedance of the tissue.

Korean Patent Laid-Open Publication No. 10-2001-0032478 (published on April 25, 2001) discloses a method for detecting extravasation which may occur when a needle is inserted into a patient for the purpose of delivering fluid to a vasculature of a patient, Determining an impedance slope value for each of a plurality of time-based epochs during delivery of the fluid; and determining an impedance slope value for each of the plurality of epochs based on the time- The method comprising the steps of: detecting an extracorporeal flux;

However, in the conventional apparatus and method for detecting extracorporeal efflux as described above, the contraction or expansion of the skin due to extracorporeal outflow is detected by a change in the resistance value of the strain gauge, There is a problem that it is necessary to specify a possible position, and it is only possible to detect the contraction or swelling of the skin due to leakage, so that it is difficult to detect the outflow of the contrast agent early, There is a problem that the position, direction, and the like for inputting are limited by a space.

In addition, Korean Patent Laid-Open Publication No. 10-2015-0044712 (published on Apr. 27, 2015) discloses a method for detecting an extravasation of a blood vessel injection agent such as a contrast agent or a sap solution in a process of injecting a contrast agent into a blood vessel of a patient An apparatus for detecting an extracorporeal outgassing comprising: a band formed so that the contrast agent can be fixed to a part of a body to be scanned; an alarm unit built in the band; A sensor unit for changing a current value output according to a measured skin pressure value and a control unit built in the band for activating the alarm unit when the current value output from the sensor unit is equal to or greater than a reference value, A sensing device is disclosed.

However, since the pressure sensor for detecting the skin pressure is fixed to the band in the case of the conventional device for early detection of extracorporeal outflow as described above, even when the normal contrast agent is injected, There is a problem in that it is difficult to actually use because there are many cases where the pressure inside the band increases and the blood vessel is malfunctioned. In addition, there is a problem that the blood vessel injecting agent such as contrast agent or liquid is spatially limited in the position or direction to put the blood vessel injecting agent.

1. Korean Patent Publication No. 10-2001-0032477 (Apr. 25, 2001)

2. Korean Patent Publication No. 10-2001-0032478 (Apr. 25, 2001)

3. Korean Patent Publication No. 10-2015-0044712 (Feb.

Accordingly, it is an object of the present invention to provide an extracorporeal blood flow sensing device that can detect the extracorporeal outflow and the skin deformation at various positions more accurately and promptly as the pressure sensor and the strain gauge are applied at the same time .

In order to attain the above object, the present invention provides a method for administering an intravenous infusion solution, comprising the steps of: adhering to a skin of a site to be injected with an injection of an intravenous infusion solution, having a first attaching portion at the center thereof and extending in a radial direction from the first attaching portion A pressure sensor fixed to the first attachment portion of the attachment member and measuring an increase in pressure at the time of extracorporeal extrusion so that the occurrence of extracorporeal extrusion is detected at an early stage; And a strain gauge for detecting the deformation of the skin at various positions by measuring the degree of deformation at the time of extracorporeal outflow.

In the present invention, the second attachment portions of the attachment members extend radially one by one at 90 degree angular intervals.

In the present invention, the attaching member is formed of a stretchable elastic material.

In the present invention, a deformation preventing member is attached and fixed to the upper surface of the first attachment portion of the attachment member, respectively.

In the present invention, the second attachment portions of the attachment members are connected to each other by a connection member.

In the present invention, the attachment member is attached to the skin of the site to which the contrast agent is to be administered by the fixing tape.

In the present invention, the pressure sensor may further comprise: an attachment plate fixed to the first attachment portion of the attachment member; a fixed electrode plate attached to the attachment plate; a movable electrode plate spaced from the fixed electrode plate; And an interval holding member interposed between the plate and the edge of the movable electrode plate to keep the movable electrode plate away from the fixed electrode plate.

In the present invention, the pressure sensor is fixed to the lower surface of the first attachment portion of the attachment member, and the strain gauge is fixed to the upper surface of the second attachment portion of the attachment member.

In the present invention, the extracorporeal flux sensing device may further include a signal receiving amplifier electrically connected to the pressure sensor and the strain gauge, respectively, for receiving and amplifying a sensor signal applied from the pressure sensor and the strain gauge, A display panel electrically connected to the amplifier and electrically connected to the computer and displaying a result discriminated by the computer, wherein the display panel is electrically connected to the amplifier and processes the sensor signal to determine whether the blood vessel is leaked out or not, .

The apparatus for detecting extracorporeal blood flow according to the present invention is characterized in that a strain gauge is installed in a second attachment part extending radially one by one at intervals of a predetermined angle from a first attachment part while a pressure sensor is installed on a first attachment part of the attachment member , It is possible to detect early detection of extracorporeal outflow by a pressure sensor measuring an increase in pressure at the time of extracorporeal outflow and to measure the degree of skin deformation It can be detected more accurately and quickly.

The apparatus for detecting extracorporeal efflux according to the present invention can be attached so that the tube catheter is positioned between the second attachment portions extending in the radial direction at intervals of a predetermined angular interval from the first attachment portion and the position of the tube catheter inserted into the blood vessel There is an advantage that it can be attached to the adjacent portion of the tube catheter regardless.

Brief Description of the Drawings FIG. 1 is a use state diagram of an extravasation detection device according to an embodiment of the present invention. FIG.
FIG. 2 is a perspective view of an extravasation apparatus according to an embodiment of the present invention. FIG.
3 is an exploded perspective view of an extracorporeal flow sensor according to an embodiment of the present invention;
FIG. 4 is a sectional view of an apparatus for detecting an extravasation of blood according to an embodiment of the present invention. FIG.
FIG. 5 is a block diagram of an extravasation detection apparatus according to an embodiment of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the same is by way of illustration and example only and is not to be taken by way of limitation, the scope of the present invention being limited only by the terms of the appended claims.

2 is a perspective view of an apparatus for detecting extracorporeal blood flow according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of an embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating an apparatus for detecting extracorporeal efflux according to an embodiment of the present invention. FIG. 5 is a cross- Fig.

The apparatus for detecting extracorporeal efflux according to an embodiment of the present invention is characterized in that it is attached to a skin of a site to be injected with a vascular injector and has a first attaching portion at its center, A pressure sensor that is fixed to the first attachment portion of the attachment member and measures an increase in pressure at the time of extracorporeal passage so that the occurrence of extracorporeal extrusion is detected early; And a strain gauge which is fixed to the attachment portion and measures the degree of deformation at the time of extracorporeal extrusion to detect skin deformation at various positions.

Hereinafter, the constituent members of the extracorporeal flux sensor 1 according to the embodiment of the present invention and the connection relation thereof will be described in detail with reference to FIG. 1 to FIG.

The attachment member 10 forms a mounting surface on which the pressure sensor 20 and the strain gauge 30 to be described later are to be adhered and fixed, and is attached to the skin of the site to be injected with, for example, And is formed of an elastic material which can be stretched or shrunk, for example, medical silicone.

The first attachment portion 11 to which the pressure sensor 20 is attached and fixed is provided at the center of the attachment member 10 and the second attachment portion 11 to which the strain gauge 30 is attached and fixed from the first attachment portion 11 13 extend in the radial direction at predetermined angular intervals.

As shown in Figs. 1 and 2, the second attaching portion 13 of the attaching member 10 has a total of four radially extended portions, one at an angle of 90 degrees around the first attaching portion 11 do. In addition, the second attachment portions 13 of the attachment member 10 may extend in the radial direction of the first attachment portion 11 by a total of three angles at an angle of 120 degrees, A total of five radial directions may be provided around the first portion 11 at intervals of 72 degrees, and a total of six radial portions may be provided around the first mounting portion 11 at angular intervals of 60 degrees It is possible.

Since the attachment member 10 has a structure in which the second attachment portions 13 extend from the first attachment portion 11 to one radial direction at intervals of a predetermined angular interval, For example, a tube catheter 3 for contrast or fluid administration can be positioned in various positions and orientations.

The deformation preventing member 15 is attached and fixed to the upper surface of the first attachment portion 11 of the attachment member 10, respectively. The deformation preventing member 15 allows the first attachment portion 11, which is the attachment fixing surface of the pressure sensor 20, to be maintained without deformation even if the skin is swollen due to the extracorporeal outflow. For example, Or a material which can not be expanded and contracted, such as a thin metal plate.

It is also preferable that the second attachment portions 13 of the above-described attachment member 10 are connected to each other by a connection member 17. The connection member 17 has a second attachment And the position of the skin deformations can be accurately determined by the strain gauges 30 arrayed at predetermined angular intervals in a radial manner.

It is also preferred that the attachment member 10 is attached to the skin of the site to which the vascular injectate, such as a contrast agent or a sap, is to be administered, for example, by the fixing tape 19 as shown in Fig. 1, Side adhesive tape provided on the lower surface of the attachment member 10 may be adhered and fixed on the skin of a site to be injected with, for example, a contrast agent or a vascular injection such as a sap.

The pressure sensor 20 is fixed to the lower surface of the first attachment portion 11, particularly the first attachment portion 11, of the attachment member 10 described above.

The pressure sensor 20 measures the pressure increase at the time of outflow of blood vessels and detects the occurrence of extracorporeal outflow early. The pressure sensor 20 is provided with a movable electrode on a pressure receiving plate such as a diaphragm, And a capacitive pressure sensor formed in such a manner that the pressure is detected by measuring the magnitude of the capacitance between the fixed electrode and the fixed electrode.

The capacitance type pressure sensor has a higher nonlinearity than the strain gauge type pressure sensor and can output a frequency type digital sensor signal and has a merit that highly accurate measurement can be performed.

3 and 4, the pressure sensor 20 formed of the electrostatic capacity type pressure sensor has an attachment plate 21 fixed to the first attachment portion 11 of the attachment member 10, A fixed electrode plate 23 fixed to the plate 21 and provided with a plurality of fixed electrodes 23a spaced apart therefrom and a movable electrode plate 23 disposed opposite to the fixed electrode plate 23 and provided with a plate- And an interval holding member 27 interposed between the edges of the attachment plate 21 and the movable electrode plate 25 to keep the movable electrode plate 25 away from the fixed electrode plate 23 . The pressure sensor 20 also includes a first lead 29 for transmitting a sensor signal to the outside.

The strain gauge 30 is fixed to the upper surface of the second attachment portion 13, particularly the second attachment portion 13, of the attachment member 10 described above.

The strain gauge 30 measures the degree of deformation at the time of extracorporeal outflow and detects whether or not the skin is deformed at various positions. The resistance gage 31 is arranged on a thin film base and transmits a sensor signal to the outside And a second lead wire 33 for connecting the first wire 33 and the second wire 33 to each other.

When the skin is deformed due to extracorporeal outflow, the resistance line 31 in the strain gauge 30 fixed on the second attachment portion 13 of the attachment member 10 is deformed corresponding to the skin strain, The degree of skin deformation can be inversely calculated by measuring the amount of change in the resistance value of the resistance wire 31 in the strain gauge 30. [

The strain gauges 30 are fixed on the second attachment portion 13 extending radially from the first attachment portion 11 at intervals of a predetermined angular interval, Can be used to analyze where skin deformation has actually occurred.

5, in order to analyze the sensor signal of the pressure sensor 20 and the sensor signal of the strain gauge 30, the extracorporeal flux sensor 1 according to an embodiment of the present invention includes, as shown in FIG. 5, A signal receiving amplifier 40 electrically connected to the strain gauge 20 and the strain gauge 30 for receiving and amplifying sensor signals applied from the pressure sensor 20 and the strain gauge 30, A computer 50 which is electrically connected to the computer 50 and processes the sensor signal to determine whether the blood vessel is leaked out and whether the skin is deformed according to various positions; The display panel 60 may further include a display panel.

The signal receiving amplifier 40 includes a conventional signal amplifying circuit for receiving and amplifying the sensor signal and the computer 50 is equipped with software for processing the sensor signal and the display panel 60 is connected to the computer 50 A monitor for visually displaying the sensor signal processing result by the user, that is, whether the blood vessel is leaked out or whether the skin is deformed by various positions.

The signal receiving amplifier 40, the computer 50, and the display panel 60 for processing the sensor signal are already well known in the art and will not be described here for the sake of brevity.

As described above, in the extracorporeal fluid sensor 1 according to the embodiment of the present invention, a tube catheter 3 for injecting a blood vessel injection agent such as a contrast agent or a sap is inserted into a blood vessel, The first lead wire 29 of the pressure sensor 20 and the second lead wire 33 of the plurality of strain gauges 30 are attached to the computer 50 to the signal receiving amplifier 40 electrically connected thereto.

The apparatus for detecting extracorporeal blood flow 1 according to an embodiment of the present invention is configured such that the pressure sensor 20 is installed in the first attachment portion 11 of the attachment member 10, The strain gauge 30 is installed in the second attachment portion 13 extending in the radial direction at intervals of one angular interval so that the pressure increase is measured by the pressure sensor 20 at the time of occurrence of extracorporeal outflow, And when the skin deformation is caused by extracorporeal extrusion, the degree of deformation is measured by a plurality of strain gauges 30 arranged radially at regular angular intervals, so that skin deformation at various positions Can be detected more accurately and quickly.

The apparatus for detecting extracorporeal efflux 1 according to an embodiment of the present invention includes a first attachment portion 11 and a second attachment portion 13 which are inserted into a blood vessel through a second attachment portion 13 extending in a radial direction, The tube catheter 3 can be attached so as to be positioned and can be attached to the adjacent portion of the tube catheter 3 regardless of the position of the tube catheter 3.

It is to be understood by those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope of the invention, the embodiments being exemplarily described above. It is therefore intended that the above-described embodiments be considered as illustrative rather than restrictive, and that all implementations within the scope of the appended claims and their equivalents are intended to be included within the scope of the present invention.

1: extravasation device
3: tube catheter
10:
11: first attachment portion
13: second attachment portion
15:
17:
19: Fixing tape
20: Pressure sensor
21: Attachment plate
23: Fixed electrode plate
23a: fixed electrode
25: movable electrode plate
25a: movable electrode
27:
29: First lead wire
30: Strain gauge
31: Metal resistance wire
33: Second lead wire
40: Signal receiving amplifier
50: Computer
60: Display panel

Claims (9)

The first attachment part 11 is provided at the center and the second attachment part 13 extends in the radial direction at a predetermined angular interval from the first attachment part 11 An attachment member (10);
A pressure sensor (20) fixed to the first attachment portion (11) of the attachment member (10) and measuring an increase in pressure at the time of extracorporeal blood flow so that the occurrence of extracorporeal blood flow is detected early; And
And a strain gauge (30) fixed to the second attachment portion (13) of the attachment member (10) and measuring the degree of deformation at the time of extracorporeal outflow to detect skin deformation at various positions Leak detection device. The method according to claim 1,
Wherein the second attachment portions (13) of the attachment member (10) extend radially at intervals of 90 degrees one by one. The method according to claim 1,
Wherein the attachment member (10) is formed of an elastic material capable of expanding and contracting. The method according to claim 1,
Wherein a deformation preventing member (15) is fixedly attached to an upper surface of the first attachment portion (11) of the attachment member (10). The method according to claim 1,
Wherein the second attachment portions (13) of the attachment member (10) are connected to each other by a connection member (17). The method according to claim 1,
Wherein the attachment member (10) is attached on the skin of a site to which the vascular injectate is to be administered by the fixing tape (19). The method according to claim 1,
The pressure sensor 20 includes an attachment plate 21 fixed to the first attachment portion 11 of the attachment member 10, a fixed electrode plate 23 attached to the attachment plate 21, The movable electrode plate 25 is disposed between the attachment plate 21 and the edge of the movable electrode plate 25 so as to connect the movable electrode plate 25 to the fixed electrode plate 25 23. The apparatus according to claim 1, wherein the gap holding member is formed of a transparent material. The method according to claim 1,
The pressure sensor 20 is fixed to the lower surface of the first attachment portion 11 of the attachment member 10 and the strain gage 30 is attached to the second attachment portion 11 of the attachment member 10 And an upper portion of the blood vessel is fixed to an upper surface of the blood vessel. The method according to any one of claims 1 to 8,
A signal receiving amplifier (40) electrically connected to the pressure sensor (20) and the strain gauge (30), respectively, for receiving and amplifying a sensor signal applied from the pressure sensor (20) and the strain gauge (30);
A computer (50) electrically connected to the signal receiving amplifier (40) for processing the sensor signal to discriminate whether the blood vessel is leaked out and whether the skin is deformed according to various positions; And
And a display panel (60) electrically connected to the computer (50) and displaying a result determined by the computer (50).
KR1020150138353A 2015-10-01 2015-10-01 Apparatus for detecting extrevasation KR101680580B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102298649B1 (en) * 2020-09-07 2021-09-03 임태호 Device for Detecting Leak of Drug and Driving Method Thereof
KR20220072157A (en) * 2020-11-25 2022-06-02 신한대학교 산학협력단 Apparatus for detecting and monitoring extrevasation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001008729A1 (en) 1999-07-28 2001-02-08 Medrad, Inc. Extravasation detection apparatus and method
WO2010048040A2 (en) 2008-10-22 2010-04-29 Honeywell International Inc. Differential force sensor
WO2011087059A1 (en) 2010-01-15 2011-07-21 株式会社根本杏林堂 Leakage detection unit and leakage detection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001008729A1 (en) 1999-07-28 2001-02-08 Medrad, Inc. Extravasation detection apparatus and method
WO2010048040A2 (en) 2008-10-22 2010-04-29 Honeywell International Inc. Differential force sensor
WO2011087059A1 (en) 2010-01-15 2011-07-21 株式会社根本杏林堂 Leakage detection unit and leakage detection system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102298649B1 (en) * 2020-09-07 2021-09-03 임태호 Device for Detecting Leak of Drug and Driving Method Thereof
KR20220072157A (en) * 2020-11-25 2022-06-02 신한대학교 산학협력단 Apparatus for detecting and monitoring extrevasation
KR102448604B1 (en) 2020-11-25 2022-09-27 신한대학교 산학협력단 Apparatus for detecting and monitoring extrevasation

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