JP2000000220A - Structure of bioelectrode connecting part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily exchange a tip element while keeping a radio shielding state by arranging each connecting terminal to the rear socket of an insulating holder fixed with an electrode piece so as to freely attachably/detachably connect to from the each connecting terminal of the insulation holder on the side of a signal wire cable. SOLUTION: A shield electrode 6 is provided at the disk-like insulation holder fixed with the electrode piece 13 as the tip element and the connecting terminal 3a of the piece 13 (which is a cylindrical matter put through upward from an electrode contact 3 which is connected to the piece 13 through an electrically conductive gel body 4) and the connecting terminal 6a of the electrode 6 is arranged inside and outside of a cylindrical socket projecting to the rear part. In addition, the connecting plug 7 of the signal wire cable and an arc-like shield electrode contact to be connected to a shield coated material are provided at the insulation holder 2 on the side of the signal wire cable, and above contact parts 7a and 8a are freely attachably/detachably connected to/from the respective terminals 3a and 6a of the piece 13 and the electrode 6 at the socket.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bioelectrode connection structure used in medical electronic equipment such as a heart-lung machine.

[0002]

2. Description of the Related Art In a use environment of such a bioelectrode connection structure, various electronic devices are often placed.
As a signal line cable connected to an electronic device, a coaxial cable shielded so as not to pick up radio noise is used, but it is also necessary to shield the tip with an electrode piece that comes into contact with a living body. Therefore, as a bioelectrode connection structure in consideration of this point, for example, those described in Japanese Utility Model Laid-Open No. 57-2006 and Japanese Utility Model Laid-Open No. 57-74011 are known.

[0003]

However, on the other hand, on the other hand, the electrode pieces that come into contact with the living body always maintain cleanliness,
Care must be taken to prevent bacterial infection between living organisms. For this reason, the tip element including the electrode piece that comes into contact with the living body is replaced with a new one for each living body and is in a disposable form or can be removed, and disinfection and cleaning are easy,
Must be possible.

The present invention has been made based on the above circumstances, and an object of the present invention is to easily and easily hold a tip element including an electrode piece in contact with a living body in a state of a radio wave shield. An object of the present invention is to provide a replacement or detachable bioelectrode connection structure.

[0005]

Therefore, in the present invention,
In a structure in which a signal wire cable is connected to an electrode piece that comes into contact with a living body, and a shield electrode that shields the electrode piece is connected to a coaxial shield coating that shields the signal wire cable, an insulation in which the electrode piece is attached is provided. The holder is provided with the shield electrode, the connection terminals of the electrode piece and the shield electrode are arranged in a socket at the back of the insulating holder, and the insulating holder on the signal line cable side has A shield electrode contact connected to the connection plug of the signal line cable and the shield cover is provided, and the socket is detachably connected to each connection terminal of the electrode piece and the shield electrode in the socket. I do.

In this case, as a preferred embodiment of the present invention, the insulating holder on one side of the electrode has a disk shape, and the electrode piece provided thereon is shielded by the shield electrode provided so as to cover the same. The connection plug is detachably connected to the connection terminal of the electrode piece at the center of the socket, and the shield electrode contact is detachably connected to the connection terminal of the shield electrode on the outer periphery of the socket. The signal line cable-side insulating holder is detachably fitted to the socket.
Further, if necessary, the insulating holder on the signal line cable side preferably has a C-shaped fitting portion that elastically fits into the socket while the connection plug is disposed at the center.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. In FIG.
Reference numeral 7 denotes a tip element of the bioelectrode connection structure according to the present invention, which is connected via a shielded coaxial cable 12 to, for example, a medical electronic device 14 that processes a biosignal. In this use environment, a medical electronic device 15 such as a heart-lung machine, a medical electronic device 16 for stimulating a living body, and the like are also installed.

At the distal end of the coaxial cable 12, an insulating holder 2 (for example, made of an elastic synthetic resin) is provided as a cord clip. It has a structure that can be detachably attached to it. That is, the bioelectrode connection structure according to the present invention basically connects a signal line cable (not shown) inside the shielded coaxial cable 12 to an annular electrode piece 13 that comes into contact with a living body, for example. ,
For shielding the electrode piece 13 from radio noise on a coaxial shield covering the signal line cable,
For example, it has a structure in which a disk-shaped shield electrode 6 is connected.

In such a configuration, for example, the disk-shaped insulating holder 1 to which the electrode piece 13 is attached as the tip element 17 is provided with the shield electrode 6 described above. Thirteen connection terminals 3a (this is a cylindrical one penetrating upward from a small disk-shaped electrode contact 3 provided in the center of the insulating holder 1, and the electrode contact 3 is a conductive gel body 4 on the lower surface of the insulating holder 1). Is electrically connected to the electrode piece 13) and the shield electrode 6
Are arranged inside and outside of a cylindrical socket protruding from the back of the insulating holder 1.

Also, the insulation holder 2 on the signal line cable side
Is provided with, for example, an arc-shaped shield electrode contact 8 connected to the connection plug 7 (for example, made of an elastic metal piece) of the signal line cable and the shield coating, and has a contact portion 7a and a contact portion 7a. 8a is detachably connected to the electrode strip 13 (that is, the electrode contact 3) and the connection terminals 3a and 6a of the shield electrode 6 in the socket.

In particular, in this embodiment, the shielded coaxial cable 12 has a signal line cable and a shield coating separated into two systems via a cable bend 11, and one signal line cable is separately shielded. The covered signal line cable 10 is guided to the connection plug 7 through the inside of the insulating holder 2, and the distal end 10 a thereof is electrically connected to the base end of the connection plug 7. Similarly, the other shield covering is guided to the shield electrode connection point 8 through the inside of the insulating holder 2 as the shield cable 9, and its tip 9 a is electrically connected to the shield electrode connection point 8. This electrical connection may be made by means such as soldering.

In this embodiment, the electrode piece 13 provided on the insulating holder 1 is shielded by the shield electrode 6 provided so as to cover the electrode piece 13. The tip of the connection plug 7 is detachably connected (fitted) to the connection terminal of the electrode piece 13 (that is, the connection terminal 3a of the electrode contact 3), and is shielded by the connection terminal 6a of the shield electrode 6 on the outer periphery of the socket. At the same time as the electrode contacts 8 are detachably connected, the insulating holder 2 on the signal line cable side is detachably fitted to the socket.

Further, the insulation holder 2 on the signal line cable side has a C-shaped fitting portion as a whole, in which a connection plug 7 is arranged on a stage 2f extending upward from the center 2a and elastically fits into the socket. 2b and 2c, and clip operating arms 2d and 2e extending from the base 2g of both fitting portions toward the branch of the cable bend 11. Then, by gripping the clip operating arms 2d and 2e, the elasticity of the insulating holder 2 is used to fit the fitting portions 2b and 2e.
2c are separated from each other, the internal space surrounded by them is expanded, the socket of the insulating holder 1 is guided into the internal space, and the gripping operation is released, whereby the insulating holder 2 is released.
With the elastic restoring force, the internal space is reduced and the fitting to the socket is achieved. Reference numeral 5 denotes a protective cover for the shield electrode 6.

In such a configuration, the tip element 17 including the electrode piece 13 is shielded against radio noise, and the tip element 17 is detachable.
The advantage that replacement and cleaning can be easily performed is obtained.

The tip element 17 of this bioelectrode connection structure comprises:
At the time of actual attachment to a living body, the electrode piece 13 and the conductive gel body 4 are brought into contact with the surface of the living body. Then, a biological signal is transmitted from these to the signal line cable 10 via the connection terminal 3 a of the electrode contact 3 and the connection plug 7.

At this time, the electrode piece 13, the conductive gel body 4, and the electrode contact 3 are substantially wrapped by the shield electrode 6 and its connection terminal 6a so that external radio noise does not enter inside. Is shielded. Note that the signal line cable 10 is coaxially shielded before reaching the shielded coaxial cable 12, so that the same shield effect as described above can be obtained.

[0017]

As described in detail above, the present invention connects a signal line cable to an electrode piece that comes into contact with a living body, and attaches the electrode piece to a coaxial shield coating that shields the signal line cable. In the structure in which the shield electrode to be shielded is connected, the shield electrode is provided on the insulating holder to which the electrode piece is attached, and each connection terminal of the electrode piece and the shield electrode is connected to a socket on the back of the insulating holder. And a shield electrode contact connected to the connection plug of the signal line cable and the shield cover is provided on the insulation holder on the signal line cable side, and the electrode piece and the shield are provided in the socket. It is characterized by being detachably connected to each connection terminal of the electrode.

[0018] Therefore, the shield for the bioelectrode portion, particularly in the bioelectrode section, is surely formed in the path for measuring the biosignal, and can be substantially not affected by external radio noise. Since the connection between the electrode portion and the cable is realized in a plug form, an effect that replacement and cleaning of a portion that comes into contact with a living body can be easily performed can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional side view.

FIG. 3 is a schematic perspective view showing a use mode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulated holder 2 Insulated holder 2a Center 2b, 2c Fitting part 2d, 2e Clip operation arm part 2f Stage 2g Base 3 Electrode contact 3a Connection terminal 4 Conductive gel body 5 Protective cover 6 Shield electrode 6a Connection terminal 7 Connection plug 7a Connection Part 8 Shield electrode contact 8a Contact part 9 Shield cable 9a Tip 10 Signal line cable 10a Tip 11 Cable bend 12 Shielded coaxial cable 13 Electrode piece 14-17 Medical electronic equipment

Claims (3)

[Claims] 1. A structure in which a signal line cable is connected to an electrode piece that comes into contact with a living body, and a shield electrode that shields the electrode piece is connected to a coaxial shield covering the signal line cable. On the insulating holder to which the piece is attached, the shield electrode is provided, and each connection terminal of the electrode piece and the shield electrode,
Located in the socket on the back of the insulating holder,
Further, the insulating plug on the signal line cable side is provided with a shield electrode contact connected to the connection plug of the signal line cable and the shield cover. In the socket, each connection terminal of the electrode piece and the shield electrode is provided. A bioelectrode connection structure, which is detachably connected to the bioelectrode. 2. The electrode holder according to claim 1, wherein said insulating holder on one side of said electrode has a disk shape, and said electrode piece is shielded by said shield electrode provided so as to cover said electrode holder. The connection plug is detachably connected to the connection terminal, and a shield electrode contact is detachably connected to the connection terminal of the shield electrode on the outer periphery of the socket. At the same time, the signal line cable side is connected to the socket. The bioelectrode connecting structure according to claim 1, wherein the insulating holder has a structure in which the insulating holder is detachably fitted. 3. The signal line cable-side insulating holder, wherein the connection plug is disposed at the center, and a C-shaped fitting portion elastically fitted into the socket is provided. 3. The biological electrode connection structure according to 2.