JP4964519B2 - Attachment for bioelectrode and bioelectrode - Google Patents

Description

  The present invention relates to a bioelectrode attachment and a bioelectrode.

  When measuring biological information such as an electrocardiogram, a biological electrode is attached to the living body, and the biological information is transmitted from the biological electrode to the measuring instrument via a lead wire. In general, a biological electrode used for biological information measurement is a disposable type. Disposable bioelectrodes can be classified into various types such as a hook type, a magnet type, a tab type, and a lead wire integrated type depending on the connection structure with the lead wire.

  The magnet-type bioelectrode is connected to the connector portion of the lead wire by magnetic force. As an example, a magnetic bioelectrode is provided with a planar magnetic body as a lead wire attachment portion. In addition, a planar magnet is provided in the connector portion of the lead wire that can be connected to the bioelectrode. Therefore, it is possible to easily connect by simply bringing the connector portion of the lead wire close to the lead wire attachment portion of the bioelectrode. Further, the connection between the lead wire mounting portion of the bioelectrode and the connector portion of the lead wire involves surface contact. For this reason, even if the lead wire fluctuates during measurement, a stable measurement waveform can be obtained.

In addition, among the bioelectrodes of the type described above, a hook-type bioelectrode (see Patent Document 1) including a protruding electrode element can be manufactured at low cost. In addition, the existing hook-type bioelectrode has more types of base materials (pads) and gels than existing bioelectrodes having other connection structures. The hook-type bioelectrode is provided with a male member as a lead wire attachment portion. In addition, the lead wire connector portion connectable to the bioelectrode is provided with a female member that fits with the male member. Or the clip which clamps a male member is provided as a connector part.
JP-A-9-271467

  However, when a lead wire is connected to the hook-type bioelectrode, the entire surface of the male member as the lead wire attachment portion is not in close contact with the female member or clip as the connector portion. That is, in the hook-type bioelectrode, the connection between the lead wire attaching portion and the connector portion is close to point contact. Furthermore, the male member has a very small diameter. Therefore, if the lead wire fluctuates during measurement, the measurement waveform may become unstable because the gel of the bioelectrode is easily detached from the surface of the living body.

  The present invention has been made in view of such a point, and provides a wide variety of types such as a hook-type bioelectrode and facilitates connection with a lead wire connector portion like a magnet-type bioelectrode. In addition, an object of the present invention is to provide a bioelectrode attachment and a bioelectrode that can simultaneously stabilize the measurement waveform.

  An attachment for a bioelectrode of the present invention includes a main body made of a magnetic material, and a contact surface in contact with a lead wire connector portion including a magnet on the main body, and a protruding electrode element of the bioelectrode on the opposite side of the contact surface. And a hole for fixing the main body to the electrode element.

  The biological electrode of the present invention includes a base material having an attachment surface to the biological surface, an electrode element projecting from the base material to the opposite side of the attachment surface, and a contact surface in contact with a lead wire connector portion provided with a magnet. And a magnetic member provided with a hole for inserting the electrode element from the opposite side of the contact surface and fixing the main body to the electrode element.

  According to the present invention, it is possible to provide an abundant variety such as a hook-type bioelectrode, and to facilitate connection with a lead wire connector portion and stabilize a measurement waveform like a magnet-type bioelectrode. And both.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following embodiments, the same reference numerals are assigned to the same elements.

(Embodiment 1)
1 is a perspective view of a bioelectrode attachment (hereinafter simply referred to as “attachment”) according to Embodiment 1 of the present invention, FIG. 2 is a top view of the attachment of FIG. 1, and FIG. It is the sectional view on the AA line of the attachment of FIG. The attachment 10 is used to detachably connect a lead wire connector portion (lead wire connector portion) provided with a magnet to a hook-type bioelectrode provided with a protruding electrode element, and is detachable from the bioelectrode. It can be installed.

  The attachment 10 includes a substantially disc-shaped main body 11 made of a magnetic material. Examples of the magnetic material that can be used include stainless steel (SUS), ferrite, iron, nickel, silicon iron, permalloy, neodymium, magnetic iron steel, and barium magnet.

  The main body 11 is provided with a contact surface 12 that comes into contact with the magnet provided in the connector portion of the lead wire to form a surface contact with the magnet. When the magnet is brought close to the contact surface 12, the magnet and the contact surface 12 are connected by magnetic force. Therefore, when the attachment 10 is attached to the biological electrode, the measurement waveform can be stabilized while facilitating the connection with the lead wire connector portion like the magnetic biological electrode.

  Further, the body 11 is provided with a hole 13 that fits into the protruding electrode element by inserting the protruding electrode element of the biological electrode into the inside from the opposite side of the contact surface 12. The hole 13 has a depth corresponding to the height of the protruding electrode element and a diameter corresponding to the diameter of the protruding electrode element. The protruding electrode element is in close contact with the inner wall of the hole 13 and protrudes. It is formed so that a stable fitting state between the element and the hole 13 can be maintained. Therefore, the main body 11 is fixed to the protruding electrode element by press-fitting or screwing the protruding electrode element into the hole 13, or by bonding or welding the inner wall of the hole 13 to the surface of the protruding electrode element. Is done by. When fixing by screwing, a thread is formed in advance on the inner wall of the hole 13. In the present embodiment, the hole 13 penetrates from the back surface 15 to the contact surface 12, but may not penetrate to the contact surface 12.

  Furthermore, the main body 11 is provided with an annular protrusion 14 that surrounds the contact surface 12. Therefore, when the main body 11 is fixed to the protruding electrode element and the magnet of the lead wire connector portion is in contact with the contact surface 12, and the bioelectrode is connected to the lead wire, the magnet is pulled by the lead wire. Even if the position shift occurs, the magnet is locked by the protrusion 14, so that the lead wire can be prevented from falling off the biological electrode. More preferably, the contact surface 12 has substantially the same surface area as the magnet, and the protrusion 14 is provided so that the magnet can be fitted in a recess formed by the contact surface 12 and the protrusion 14 without rattling.

  An example of usage of the attachment 10 having the above configuration will be described. First, as shown in FIG. 4A, the protruding electrode element 16a of the biological electrode 16 is press-fitted into the hole 13 from the back surface 15 side. 4B, when the surface of the magnet 17b provided on the connector portion 17a of the lead wire 17 is brought close to the contact surface 12, the magnet 17b and the attachment 10 are connected by magnetic force.

  As described above, according to the present embodiment, in order to connect the lead connector portion for the magnet-type bioelectrode to the hook-type bioelectrode, a variety of types such as the hook-type bioelectrode are provided. This makes it easy to connect with the lead wire connector portion and stabilize the measurement waveform as in the case of the magnet-type bioelectrode. In addition, since the attachment of the present embodiment has a perforated structure including a hole corresponding to the diameter of the protruding electrode element, it can be easily retrofitted to a ready-made hook-type bioelectrode. The above-described effects can be realized without requiring any improvement and at low cost.

(Embodiment 2)
FIG. 5 is a cross-sectional view of a biological electrode according to Embodiment 2 of the present invention.

  The biological electrode 20 includes a base member 21, an electrode element 22, and a magnetic member 10 a having substantially the same configuration as the attachment 10 described in the first embodiment. A hole is provided in the center of the plane of the base material 21, and the electrode element 22 is inserted into the hole from the affixing surface 21 a to the living body surface of the base material 21. The protruding portion 22a of the electrode element 22 protrudes from the surface 21b opposite to the pasting surface 21a. The hole 13 of the magnetic member 10 a is fitted into the protrusion 22 a by inserting the protrusion 22 a into the inside from the side opposite to the contact surface 12. Moreover, the contact surface 12 of the magnetic member 10a contacts the magnet provided in the lead wire connector part, and forms a surface contact. Further, an electrolyte gel 23 is disposed on the pasting surface 21 a of the base material 21 so as to cover a portion of the electrode element 22 on the pasting surface 21 a side.

  A typical existing hook-type bioelectrode has a structure in which another electrode element is covered from the surface 21b side on the electrode element 22 inserted from the sticking surface 21a side. On the other hand, in the present embodiment, by adopting the above-described structure, the first embodiment can be realized without using an electrode element that covers the electrode element 22, that is, with a structure that is simpler and has fewer parts. The effect obtained by the attachment 10 can be realized.

  In the above, Embodiment 1-2 of this invention was demonstrated. However, the above description is an illustration of a preferred embodiment of the present invention, and the scope of the present invention is not limited to this. That is, the configuration, structure, application, and the like described in each embodiment are examples, and it is obvious that various changes and modifications to these examples are possible within the scope of the present invention.

The perspective view of the attachment for biological electrodes which concerns on Embodiment 1 of this invention Top view of the bioelectrode attachment of FIG. AA line sectional view of the attachment for bioelectrodes of FIG. The figure which shows an example of the usage method of the attachment for biological electrodes which concerns on Embodiment 1 of this invention Sectional drawing of the bioelectrode which concerns on Embodiment 2 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 10a Bioelectrode attachment 11 Main body 12 Contact surface 13 Hole 14 Protrusion 20 Bioelectrode 21 Base material 22 Electrode element

Claims (5)

It has a body made of magnetic material,
A contact surface in contact with the lead wire connector portion provided with a magnet in the main body, and a hole portion for inserting the protruding electrode element of the bioelectrode from the opposite side of the contact surface and fixing the main body to the electrode element. Provided,
The attachment for bioelectrodes characterized by the above-mentioned. The magnetic body is stainless steel, ferrite, iron, nickel, silicon iron, permalloy, neodymium, magnetic iron steel, or barium magnet.
The bioelectrode attachment according to claim 1. The main body further includes an annular protrusion that surrounds the contact surface.
The bioelectrode attachment according to claim 1. The body is attached to the electrode element by press-fitting or screwing the electrode element into the hole, or by bonding or welding the inner wall of the hole to the surface of the electrode element inserted into the hole. Fixed to the
The bioelectrode attachment according to claim 1. A base material having a surface to be applied to a biological surface;
An electrode element protruding from the base material to the opposite side of the pasting surface;
A magnetic member provided with a contact surface that comes into contact with a lead wire connector portion including a magnet, and a hole that inserts the electrode element from the opposite side of the contact surface and fixes the main body to the electrode element;
A biological electrode comprising:

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