JP2019088509A - Biological information detection device - Google Patents

Abstract

To provide a biological information detection device that allows a sensor part and a cable to be fixed without using an adhesive tape, and can inhibit noise from being mixed in a biological signal.SOLUTION: A biological information detection device includes an electrode pad 4 capable of detecting a signal on biological information on a subject, and a cable 23 connected to the electrode pad, which can transmit the signal. The electrode pad includes a conductive gel sheet 42 having a contact surface that can be stuck to the subject, a sensor part 43 to which the cable is connected, and which is arranged on the top face on a side opposite to the contact surface of the conductive gel sheet, and can detect the signal, a first fixed member 45 fixed on a top face side of the conductive gel sheet, and a second fixed member 46 for fixing the sensor part and a portion of the cable by holding the portion of the cable together with the first fixed member. The first fixed member and the second fixed member are composed of hook-and-loop fasteners, which are mutually removable.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a biological information detection apparatus that detects a signal related to biological information of a subject such as a patient and a fetus.

As a biomedical electrode that is attached to the skin surface of a living body to acquire a biomedical signal of the living body, for example, the one described in Patent Document 1 is known.
The living body electrode described in Patent Document 1 has a pair of upper and lower holding members and a lower holding member, one end of each of which is stacked and an adhesive layer formed on the front surface of the lower surface, and a film held between the holding members. The upper holding member covers the entire surface of the electrode member so that one side of the stacked upper holding member coincides with one side of the electrode member, and the electrode member is stacked on the lower holding member side. It is held in close contact with one side of. When acquiring a biosignal by such a biomedical electrode, the holding member and the electrode member are attached to the skin surface of the living body through the adhesive layer respectively, and the electrode is held by the clamping member provided at the tip of the cable. Hold the member. Thereby, the biosignal detected by the electrode member is transmitted through the cable.

Japanese Patent Application Laid-Open No. 10-272110

However, in the configuration of Patent Document 1, it is desirable to fix the cable and the holding member (clip part) with the adhesive tape, but the adhesive of the adhesive tape adheres to the cable and the clip part and becomes dirty. In this case, it is necessary to remove the stain caused by the adhesive, which is complicated.
Further, for example, when the subject is a pregnant mother, a sensor part such as a biomedical electrode or a cable may move due to the movement of the mother and the fetal movement of the fetus in the mother, and noise is mixed in the biological signal.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a biological information detection apparatus which can fix a sensor unit and a cable without using an adhesive tape and can suppress noise from being mixed in a biological signal. With the goal.

  A living body information detection apparatus according to the present invention includes an electrode pad capable of detecting a signal related to living body information of a subject, and a cable connected to the electrode pad and capable of transmitting the signal, wherein the electrode pad A conductive gel sheet having an adhesive surface that can be adhered, a sensor unit that is connected to the cable and is disposed on the upper surface of the conductive gel sheet opposite to the contact surface, and that can detect the signal; A first fixing member fixed to the upper surface side of the conductive gel sheet, and a second fixing member fixing the sensor portion and a part of the cable with the first fixing member sandwiching a part of the cable; Each of the first fixing member and the second fixing member is configured by a surface fastener that is removable from each other.

In the present invention, since the sensor portion and a part of the cable are fixed by the first fixing member fixed around the sensor portion on the upper surface of the conductive gel sheet constituting the electrode pad, and the second fixing member, the electrode pad When the subject detects a signal related to the subject's biological information (for example, when the subject is a fetus in the mother, the mother moves or the fetus moves in the mother), and the cable is pulled Even in this case, since the sensor unit and the cable are fixed by the fixing member, it is possible to suppress the noise from being mixed in the signal related to the detected biological information.
Further, since each of the first fixing member and the second fixing member is constituted by a surface fastener which can be attached to and detached from each other, the positions of the sensor portion and the cable in the electrode pad can be freely set, and the attachment and detachment thereof can be facilitated. Furthermore, when the sensor unit and the cable are reused, since they are not contaminated with the adhesive, there is no need to clean the sensor unit and the cable, so that they can be easily reused when the sensor unit and the cable are reused.

As a preferable mode of the living body information detection apparatus according to the present invention, the electrode pad may have a clip section detachably connected to the sensor section at a tip of the cable.
In the above aspect, the clip unit is configured to be attachable to and detachable from the sensor unit, so that the clip unit and the cable can be reused more easily.

In a preferable embodiment of the biological information detection apparatus according to the present invention, the electrode pad is provided with a surface material having an outer diameter larger than that of the conductive gel sheet on the upper surface of the conductive gel sheet. It is good to be fixed on the surface material.
Here, since the first fixing member is configured by the surface fastener, there is a possibility that the skin may be roughened if the first fixing member directly touches the skin when the electrode pad is attached to the subject.
On the other hand, in the above aspect, since the first fixing member is fixed on the conductive gel sheet via the surface material, for example, if the surface material is made of non-woven fabric or the like, it is possible to suppress the skin roughening of the subject.

  ADVANTAGE OF THE INVENTION According to this invention, a sensor part and a cable can be fixed without using an adhesive tape, and it can suppress that a noise is mixed in the signal regarding the test subject's biological information detected by a sensor part.

It is a schematic diagram which shows the general offensive of the biometric information detection apparatus which concerns on one Embodiment of this invention. It is the top view which looked at the electrode pad of the living body information detecting device in the above-mentioned embodiment from the 2nd fixed member side. It is sectional drawing which shows the cross section which cut | disconnected the 1st electrode pad before a sensor part is fixed by A1-A1 line | wire shown in FIG. It is sectional drawing which shows the outline of the cross section which cut | disconnected the 1st electrode pad to which the sensor part was fixed by A1-A1 line | wire shown in FIG. It is a top view which shows the example fixed in the state which the cable bent in the electrode pad in the said embodiment. The electrode pad in the said embodiment is a top view which shows the example fixed in the state curved in the direction different from a drawing-out direction in a cable. It is a top view showing the example which has a plurality of conductive gel sheets, a sensor part, a clip part, and a cable in the above-mentioned embodiment, respectively. It is the top view which looked at the 1st fixing member which comprises the electrode pad in the modification of the said embodiment, a surface material, and the gel sheet from the 1st fixing member side. It is sectional drawing which shows the example in which a 1st fixing member, a surface material, a gel sheet, and a peeling film are cut | disconnected by B1-B1 line shown in FIG. 7, and a sensor part, a cable, and a 2nd fixing member are arrange | positioned at this. It is sectional drawing which shows the cross section of the electrode pad in the modification of the said embodiment.

Hereinafter, embodiments of the biological information detection apparatus of the present invention will be described with reference to the drawings.
[Schematic Configuration of Biological Information Detection Device]
As shown in FIG. 1, the biological information detection apparatus 1 of the present embodiment includes a main body 2 and a plurality of electrode pads 4. The main body 2 includes a case 21, a display unit 22, and a plurality of cables 23. In the case 21, a recording paper 24 is provided. Each of the plurality of cables 23 is provided so as to be freely connectable to the corresponding electrode pad 4.
The electrode pad 4 receives an electrical signal related to biological information of a fetus (subject) in the mother's body, and transmits an electrical signal related to the biological information (hereinafter referred to as a bioelectric signal) to the main body 2 via the cable 23. The bioelectric signal includes, for example, a heartbeat signal, a respiration signal, and an electromyography signal.

The main body 2 receives the bioelectric signal output from the electrode pad 4, calculates the heart rate (fetal heart rate) of the fetus in the mother, displays these on the display unit 22, and The fetal heart rate is printed on the provided recording paper 24. The main body 2 may store the fetal heart rate in a memory (not shown), together with or instead of the display and the printing of the fetal heart rate.
The living body information detection apparatus 1 of the present embodiment is characterized in the fixing structure of the sensor unit 43 and the cable 23 in the electrode pad 4.
Although FIG. 1 shows an example in which four cables 23 are connected to the housing 21, a large number of cables 23 are actually provided.
Further, in the following description, when the electrode pad 4 is attached to the mother body, the surface that contacts the mother body is referred to as the contact surface 4a, and the surface opposite to the mother body is described as the top surface 4b.

[Configuration of electrode pad]
The electrode pad 4 is attachable to a mother and detects a signal (bioelectric signal) related to biological information of a fetus in the mother. As shown in FIG. 4, this electrode pad 4 has a peeling film 41 located on the side of the contact surface 4a of the conductive gel sheet 42 in order from the side of the contact surface 4a, and a contact surface 4a capable of adhering to the subject. A conductive gel sheet 42 and a sensor section 43 disposed on the upper surface of the conductive gel sheet 42 on the opposite side to the contact surface 4a, to which the cable 23 is connected via the clip section 44; A clip portion 44 connected to the sensor portion 43, and a first fixing member 45 located around the sensor portion 43 on the upper surface of the conductive gel sheet 42 for fixing the sensor portion 43, the clip portion 44 and the cable 23; The top surface 4 b is configured, and a second fixing member 46 that fixes the sensor unit 43, the clip unit 44, and the cable 23 together with the first fixing member 45 is provided.

As shown in FIG. 2, in the electrode pad 4, the sensor unit 43 is provided substantially at the center of the substantially circular conductive gel sheet 42 in plan view, and the cable 23 connected to the sensor unit 43 is the conductive gel sheet 42. The end of the cable 23 is connected to the body 2.
Hereinafter, each configuration of the electrode pad 4 will be described in detail.

The release film 41 is disposed to face the contact surface 4 a of the conductive gel sheet 42, and the conductive gel sheet 42 is exposed by peeling off the release film 41 so that the electrode pad 4 can be attached to the base. The release film 41 is formed in a substantially rectangular shape in plan view, and is formed in a size slightly larger than the conductive gel sheet 42.
The conductive gel sheet 42 is a sheet having conductivity capable of adhering to the base and is formed larger than the sensor unit 43 when viewed from the peeling film 41 side. The conductive gel sheet 42 transmits the bioelectric signal of the fetus in the mother to the sensor unit 43 by being attached to the mother.

The sensor unit 43 receives an electrical signal (bioelectric signal) related to biological information of a fetus in the mother's body. The sensor unit 43 is a plate electrode formed in a substantially circular shape in a plan view, and is disposed at the center of the top surface of the conductive gel sheet 42 as shown in FIGS. Further, as shown in FIGS. 3 and 4, a first fixing member 45 is provided around the sensor unit 43, and the first fixing member 45 fixes the sensor unit 43 and the like together with the second fixing member 46. It also functions as an insulating layer. Thereby, the bioelectric signal detected through the conductive gel sheet 42 is transmitted only to the sensor unit 43. Further, a projection 431 is formed on the surface on the top surface 4 b side of such a sensor unit 43.
The clip portion 44 provided at the tip of the cable 23 has a function of connecting the sensor portion 43 and the cable 23, and has a concave portion 441 on the surface on the side of the contact surface 4a. The recess 441 has a shape corresponding to the protrusion 431 of the sensor unit 43, and the protrusion 431 is fitted to the recess 441 to connect the sensor 43 and the clip 44. Thereby, the bioelectric signal detected by the sensor unit 43 is transmitted toward the cable 23 through the clip unit 44.

[Configuration of First Fixing Member and Second Fixing Member]
The first fixing member 45 is formed of, for example, a surface fastener, and is disposed so as to surround the sensor portion 43 on the conductive gel sheet 42. In general, the surface fasteners can be attached by pressing the hooked side and the looped side to be closely adhered, and can be attached and removed freely. .
Further, the second fixing member 46 constitutes an upper surface 4b of the electrode pad 4 and has an engaging surface 461 formed of a surface fastener provided with a large number of hooks on the surface opposite to the upper surface 4b. . As shown in FIGS. 3 and 4, the engagement surface 461 is provided with a large number of key-shaped hooks.

  On the other hand, the first fixing member 45 is composed of surface fasteners raised closely in a loop shape and has an engaged surface 451 engaged with a large number of hooked raised engagement surfaces 461. The second fixing member 46 is configured to be removable. As shown in FIGS. 3 and 4, the engaged surface 451 is formed with a large number of loops for winding and fixing a key-shaped hook formed on the engaging surface 461. Therefore, as shown in FIGS. 3 and 4, the first fixing member 45 and the second fixing member 46 are provided such that the engaging surface 461 and the engaged surface 451 face each other, whereby the sensor portion 43, The clip portion 44 and a part of the cable 23 are fixed.

[Fixing method of sensor part etc. in electrode pad]
First, as shown in FIG. 3, the conductive gel sheet 42 is disposed on the release film 41, and the sensor unit 43 is disposed at the center of the top surface 4 b of the conductive gel sheet 42. Then, the first fixing member 45 is disposed around the sensor unit 43 on the conductive gel sheet 42. Specifically, the first fixing member 45 surrounds the sensor unit 43, and is disposed so as to extend outward around the sensor unit 43. In other words, the first fixing member 45 extends from the outer peripheral portion of the sensor portion 43 to the end portion of the conductive gel sheet 42. Thereby, a part of the cable 23 drawn from the sensor unit 43 or the clip unit 44 can also be fixed.
The clip unit 44 is connected to the sensor unit 43 disposed on such a conductive gel sheet 42. Specifically, the protrusion 431 of the sensor unit 43 is fitted in the recess 441 of the clip unit 44 to connect them. Then, as shown in FIG. 4, by pressing the second fixing member 46 against the clip portion 44 and the first fixing member 45 from the upper side of the clip portion 44, a part of the sensor portion 43, the clip portion 44 and the cable 23 Are fixed by the first fixing member 45 and the second fixing member 46 to form the electrode pad 4.

Then, such an electrode pad 4 is attached to the mother by bringing the contact surface 4a of the conductive gel sheet 42 into contact with the mother after peeling off the peeling film 41, and the bioelectric signal of the fetus in the mother is It will be detected. Then, when the detection of the bioelectric signal by the electrode pad 4 is completed, the electrode pad 4 is removed from the mother body.
Then, after peeling off the second fixing member 46, the clip portion 44 is removed from the sensor portion 43, and the conductive gel sheet 42, the sensor portion 43, and the first fixing member 45 are discarded. In this respect, since each of the first fixing member 45 and the second fixing member 46 is formed of a surface fastener, the clip portion 44 and the cable 23 are not contaminated by the adhesive, so the clip portion 44 and the cable 23 are Can be reused.
For this reason, the electrode pad 4 prepares the peeling film 41, the electroconductive gel sheet 42, the sensor part 43, and the 1st fixing member 45 newly, and reuses it for this (The electrode pad 4 of the last time was comprised) By fixing the portion 44, the cable 23, and the second fixing member 46 as described above, the electrode pad 4 can be used as a new electrode pad 4.
Although the sensor unit 43 is not to be reused, the sensor unit 43 is not limited to this. For example, the sensor unit 43 may be removed from the conductive gel sheet 42, cleaned, and then reused.

  In the above embodiment, the sensor portion 43, the clip portion 44, and a part of the cable 23 are fixed by the first fixing member 45 located on the side of the conductive gel sheet 42 where the sensor portion 43 is disposed and the second fixing member 46. Therefore, when the bioelectric signal of the subject is detected by the electrode pad 4, even when the subject moves or when the cable 23 is pulled, the sensor portion 43 and the cable are fixed by the fixing members 45 and 46. Since 23 is fixed, it is possible to suppress the mixing of noise into the detected bioelectric signal.

Further, since each of the first fixing member 45 and the second fixing member 46 is constituted by a surface fastener which can be attached to and detached from each other, the positions of the sensor portion 43 and the cable 23 in the electrode pad 4 can be freely set. You can do it easily. For example, as shown in FIG. 5, the cable 23 can be fixed in a bent state, and even when the cable 23 is pulled by this, the tension is absorbed by the bent portion, and the sensor unit 43 can be fixed. Can be suppressed.
In addition, when the clip portion 44 and the cable 23 are reused, the clip portion 44 and the cable 23 are reused since the clip portion 44 and the cable 23 do not need to be cleaned by the adhesive. When used, they can be easily reused.

Furthermore, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
For example, in the above embodiment, the electrode pad 4 is configured to include one set of the conductive gel sheet 42, the sensor unit 43, the clip unit 44, and the cable 23. However, for example, a plurality of these may be configured. For example, as shown in FIG. 7, the electrode pad 4A may be provided with three sets of the conductive gel sheet 42, the sensor unit 43, the clip unit 44, and the cable 23. In this case, as shown in FIG. 7, the peeling film 41A and the second fixing member 46 are enlarged to a size where the three sets of the conductive gel sheet 42, the sensor unit 43, and the clip unit 44 can be arranged. Each of the first fixing members 45 is disposed on the upper surface of each of the conductive gel sheets 42.
The number of sets is not limited to three, and may be two or four or more.

Further, although the sensor section 43 and the clip section 44 are provided in the above embodiment, the present invention is not limited to this, and for example, only the sensor section 43B may be provided.
FIG. 8 is a plan view showing the peeling film 41A, the conductive gel sheet 42, the first fixing member 45B, and the surface material 47 constituting the electrode pad 4B in the modification of the embodiment, and FIG. 9 is shown in FIG. It is sectional drawing which shows the cross section which cut | disconnected a part of electrode pad 4B by the B1-B1 line | wire of FIG. 8, and FIG. 10 is sectional drawing of the electrode pad 4B in the modification of the said embodiment.
As shown in FIG. 8, in this electrode pad 4B, a peeling film 41A in which three conductive gel sheets 42 can be disposed, three conductive gel sheets 42 with the peeling film 41A attached to the contact surface 4a, and respective conductive Of the three gel portions 43B (see FIGS. 9 and 10) disposed on the upper surface of the elastic gel sheet 42 and to which the cable 23 is connected, and the surface material 47 disposed opposite to the peeling film 41A and the conductive gel sheet 42. And a second fixing member 46B (see FIGS. 9 and 10) for fixing the sensor portion 43B together with the first fixing member 45B.

Among these, the surface material 47 is formed of a non-woven fabric having an outer diameter larger than that of each of the conductive gel sheets 42. Specifically, as shown in FIG. 9, the surface material 47 is formed in substantially the same size as the second fixing member 46A, and functions as an insulating layer. The first fixing member 45B is fixed to the entire surface of the top surface 4b of the surface material 47. Further, as shown in FIGS. 8 and 9, the surface material 47 is formed with three openings 471 through which the sensor portion 43B can be inserted.
Therefore, each sensor unit 43B is disposed on the upper surface of the conductive gel sheet 42 through each opening 471. When the peeling film 41A is peeled off in order to attach such an electrode pad 4B to the base, the surface material 47 is exposed between the three conductive gel sheets 42. That is, since the first fixing member 45B is fixed on the surface material 47 and the surface material 47 is made of the non-woven fabric, it is possible to suppress the rough skin of the subject. The surface material 47 is not limited to the non-woven fabric, and may be, for example, a foam material, a stretchable cotton cloth, a sponge sheet, or the like.

  Further, in the second fixing member 46 </ b> B, a plurality of key-shaped hooks are provided in a portion of the engagement surface 461 other than the portion facing the sensor portion 43 </ b> B. That is, since a plurality of key-shaped hooks are not provided in a portion of the engagement surface 461 of the second fixing member 46B facing the sensor portion 43B, the sensor portion 43B is used as the first fixing member 45B and the second fixing member 46B. The overall thickness dimension (thickness dimension of the electrode pad 4B) when fixed can be reduced. Furthermore, since the second fixing member 46B can be prevented from being unnecessarily lifted from the upper surface of the sensor unit 43B, the engaging surface 461 and the engaged surface 451 in the vicinity of the outer peripheral region of the sensor unit 43B can be firmly fixed. It can be held securely.

  Although the surface material 47 is formed to have substantially the same size as the second fixing member 46A, the present invention is not limited to this. For example, the surface material 47 may be provided only on each conductive gel sheet 42. Moreover, the surface material 47 may not be provided. That is, in the above embodiment, the sensor unit 43B may be applied instead of the sensor unit 43 and the clip unit 44.

In the above embodiment, a large number of key-shaped hooks are formed on the engagement surface 461. However, the present invention is not limited to this. For example, a large number of mushroom-shaped or hook-shaped hooks may be formed.
In the above embodiment, the second fixing member 46 is a surface fastener provided with a large number of hooks, and the first fixing member 45 is a surface fastener provided with a large number of loops, but the present invention is limited thereto. Alternatively, they may be reversed, or both hooks and loops may be implanted and shaped so that there is no distinction between hook and loop surfaces.
In the above embodiment, the subject is a fetus in the mother, but the subject is not limited to this, and may be an infant, an adult, etc. besides the mother itself.

DESCRIPTION OF SYMBOLS 1 biological information detection apparatus 2 main body 21 case 22 display part 23 cable 24 recording paper 4 electrode pad 4a contact surface 4b top surface 4A electrode pad 41 electrode pad 41 peeling film 41A peeling film 42 conductive gel sheet 43 sensor portion 431 protruding portion 43B sensor portion 44 clip portion 441 concave portion 45 first fixing member 45B first fixing member 451 engaged surface 46 second fixing member 46A second fixing member 461 engaging surface 47 surface member 471 opening portion

A living body information detection apparatus according to the present invention includes an electrode pad capable of detecting a signal related to living body information of a subject, and a cable connected to the electrode pad and capable of transmitting the signal, wherein the electrode pad A conductive gel sheet having an adhesive surface that can be adhered, a sensor unit that is connected to the cable and is disposed on the upper surface of the conductive gel sheet opposite to the contact surface, and that can detect the signal; A first fixing member fixed to the upper surface side of the conductive gel sheet, and a second fixing member fixing the sensor portion and a part of the cable with the first fixing member sandwiching a part of the cable; a, wherein each of the first fixing member and the second fixing member is constituted by mutually detachable surface fastener, the electrode pads and the cable, each of plurality et al , The plurality of the electrode pads and the cable are integrated are disposed on one of the second fixing member.

Claims (3)

An electrode pad capable of detecting a signal related to biological information of a subject;
A cable connected to the electrode pad and capable of transmitting the signal;
The electrode pad is a conductive gel sheet having an abutting surface capable of adhering to the subject;
A sensor unit connected to the cable and disposed on the upper surface of the conductive gel sheet opposite to the contact surface, and capable of detecting the signal;
A first fixing member fixed to the upper surface side of the conductive gel sheet;
And a second fixing member that fixes the sensor unit and a part of the cable with the first fixing member sandwiching a part of the cable.
Each of the said 1st fixing member and the said 2nd fixing members is comprised by the surface fastener which can be attached or detached mutually mutually, The biometric information detection apparatus characterized by the above-mentioned.   The living body information detection apparatus according to claim 1, wherein the electrode pad has a clip unit detachably connected to the sensor unit at a tip end of the cable. In the electrode pad, a surface material having an outer diameter larger than that of the conductive gel sheet is provided on the upper surface of the conductive gel sheet,
The biological information detection apparatus according to claim 1, wherein the first fixing member is fixed on the surface material.

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