JPH048884Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to biological electrodes used in electrocardiographs, electroencephalograms, etc. It relates to something that has a fixing means suitable for use when movement is involved.

(Prior Art) A conventional biological terminal electrode used for stress tests and the like is constructed as shown in FIG.
That is, a thick foam material 1 made of foamed polyethylene or the like coated with an adhesive 11 for pasting onto a living body.
Conductive mandrel 1 integrated with electrode 13 in center hole 12 of 0
4, fit the female hook member 16 to the upper end of the hook, and fit the female hook member (none of which is shown) attached to the connector at the end of the lead wire connected to the meter into the male member 16. Further, a sponge 15 impregnated with conductive cream is overlaid on the electrode 13 with an adhesive 17. Conventionally, a thick material having a thickness of about 1 mm or more is used as the foam material 10, and when the foam material 10 is attached to a living body, the electrode 13 does not move up and down or back and forth and left and right due to vibration or shaking. Thus, the strength (strength of the waist) of the foam material 10 prevents relative movement between the electrode and the human body.

(Problems to be Solved by the Invention) The conventional terminal electrode shown in FIG. When applied, it does not fit well with the skin and has a large inertial force, so it is difficult to apply vibrations to the electrodes as in stress tests, or as in measurements using telemeter electrocardiograms or Holter electrocardiographs. In some cases, the foam material 10 does not fit well, causing movement toward and away from the living body, and the electrical resistance value of the sponge 15 changes, causing noise and making accurate measurements impossible. be. In addition, skin damage may occur due to poor ventilation.

(Means for Solving the Problems) In order to solve the above problems, the biological terminal electrode of the present invention is made of a thin material for electrode attachment that has air permeability and is coated with an adhesive for pasting on the human body. It has a nonwoven fabric and a thin reinforcing film made of synthetic resin and having an outer diameter smaller than the nonwoven fabric, and the nonwoven fabric and the reinforcing film sandwich a flange provided on the outer periphery of the case holding the electrode. The nonwoven fabric and the reinforcing film are fixed to both sides of the flange, and the nonwoven fabric and the reinforcing film are fixed to each other at portions outside the flange.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 is a longitudinal cross-sectional view showing the structure of a biological terminal electrode according to the present invention, and FIG. 2 is a plan view thereof. 1 and 2, reference numeral 1 denotes an electrode mounting case made of non-conductive synthetic resin, into which an electrode base 2 made of magnetic material is fitted,
The electrode base 2 has an electrode 3 made of, for example, silver chloride.
A sponge 4 impregnated with conductive cream is placed on top of the sponge 4 and fixed to the case 1 with an adhesive 5. The case 1 has an opening 1a on the opposite surface (hereinafter referred to as the upper surface) of the attachment surface (hereinafter referred to as the lower surface), a yoke holding a permanent magnet is inserted through the opening 1a, and a meter is connected to the yoke. Solder the lead wires (none of which are shown) to
The structure is such that electrical connection is established by the attractive force between a permanent magnet and an electrode base 2 made of a magnetic material.

Therefore, in this embodiment, the flange 1b is formed on the outer periphery of the lower surface of the case 1 over the entire circumference, and the flange 1b is
The area around the center opening of a thin, air permeable, flexible non-woven fabric 6 is fixed to the lower surface of b with an adhesive 7a, and a thin synthetic resin having an outer diameter smaller than that of the non-woven fabric 6 is attached to the upper surface of flange 1b. reinforced film 8
The peripheral part of the center opening is fixed with adhesive 7b,
The nonwoven fabric 6 and the collar 1b of the reinforcing film 8
The outer parts are fixed to each other with an adhesive 7c, and an adhesive 9 is applied to the lower surface of the nonwoven fabric 6.

As the reinforcing film 8, for example, among films made of polyethylene, polypropylene, vinyl chloride, or other synthetic resins, those having relatively little stretchability and high flexibility are used.

This terminal electrode is adhered to a backing paper via an adhesive 9, and the sponge 4 is inserted into an opening provided in the backing paper and adhered to the back side of the backing paper to ensure airtightness. Cover with a plate-shaped sheet, and when using it, peel off the entire piece from the release paper.

According to this configuration, since the nonwoven fabric 6 is made of a thin flexible material, it blends well with the skin and can be firmly attached to the uneven parts of the living body. In addition, although a part of the nonwoven fabric 6 is covered with the reinforcing film 8, the large area of the outer periphery ensures breathability, so it does not peel off due to perspiration and maintains a good adhesion state. can. Further, as schematically shown in FIG. 3, the nonwoven fabric 6 and the reinforcing film 8 are deformed relative to the case 1 in the direction of the two-dot chain line a due to vibration or when an object or person comes into contact with the lead wire. When a force is applied, the flange 1b and the reinforcing film 8
The nonwoven fabric 6 was prevented from peeling off at the adhesive 7b that adhered the two, and a force was applied to the case 1 such that the nonwoven fabric 6 and the reinforcing film 8 were relatively deformed in the direction of the two-dot chain line b. In this case, the tsuba 1b and the nonwoven fabric 6
The reinforcing film 8 is prevented from peeling off at the adhesive 7a that bonds the nonwoven fabric 6 and the reinforcing film 8 to the tensile force in the radial direction c.
Since the adhesives 7a and 7b between the flange 1b and the flange 1b resist peeling, the bonding strength is increased.
In addition, as a result of tests at a plurality of hospitals of the nonwoven fabric 6 bonded to the collar 1b, with and without the reinforcing film 8, it was found that there was a large difference in superiority.

In the above embodiment, the shape of the nonwoven fabric 6 and the reinforcing film 8 was circular, but polygons such as quadrangles or shapes with their corners cut in an R shape may also be used. ,
When a synthetic resin material is used for the nonwoven fabric 6, the nonwoven fabric 6 and the reinforcing film 8 or the nonwoven fabric 6 and the reinforcing film 8 can be fixed to the collar 1b by heat welding. In addition, various changes and additions can be made to the shape, structure, and combination of each component without departing from the gist of the present invention.

(Effects of the invention) As described above, in the present invention, the collar of the electrode mounting case is sandwiched and fixed between the nonwoven fabric and the reinforcing film, and the nonwoven fabric and the reinforcing film are also fixed to each other, so that each of these is attached to the case. It is firmly fixed. In addition, for this reason, the nonwoven fabric that is applied to the skin is thin and has flexibility, so it blends well with the skin, can be firmly applied to uneven surfaces, and is stable. In measurements involving vibrations such as stress tests, it is firmly fixed and its thinness reduces inertia, allowing stable signals to be obtained and accurate measurements.

In addition, since the reinforcing film covers only the inner circumferential side of the nonwoven fabric, breathability is ensured, and a good adhesion state can be maintained without peeling off due to perspiration.
Furthermore, since breathability is ensured, skin irritation and the like can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the terminal electrode according to the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is an explanatory diagram of the operation of the embodiment, and Fig. 4 is a conventional terminal electrode. FIG.

Claims (1)

[Scope of utility model registration request] A thin non-woven fabric for attaching electrodes that is breathable and coated with an adhesive for sticking to the human body, and a thin reinforcing film made of synthetic resin and having an outer diameter smaller than the non-woven fabric, the non-woven fabric and the reinforcing film, the nonwoven fabric and the reinforcing film are fixed to both sides of the flange so as to sandwich the flange provided on the outer periphery of the case holding the electrode, and the portions of the nonwoven fabric and the reinforcing film outside the flange are A biological terminal electrode characterized in that the electrodes are fixed to each other.