JPS6031682Y2 - Electrode pad - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electrode pad that is interposed between an electrode and the skin surface when transmitting an electrical signal from the skin surface to a recording device.

Generally, when taking an electrocardiogram, etc., a paste-like conductive cream is interposed between the electrode and the skin surface.

However, in the case of cream, not only does it require the complicated work of wiping off the cream remaining on the skin after measurement, but the amount of cream applied may be uneven, or the cream may flow out due to body temperature. Another drawback is that it causes poor contact between the electrode and the skin, making it impossible to obtain accurate electrical signals.

As an electrode pad that solves these drawbacks, the inventors of the present invention proposed an electrode pad made of an adhesive hydrogel (Utility Application No. 33948/1983).

This pad solves the various drawbacks that occur when using cream, but since the electrode contact surface and the skin contact surface of the pad have the same adhesiveness, it is difficult to remove the pad by holding the mold pole after measurement. When using the pad, the pad may get stuck on the skin surface, and if you want to use it repeatedly, it is necessary to peel it off from the skin surface and re-adhere it to the electrode surface.

The present invention provides an electrode pad made of such an adhesive hydrogel, which has a structure that does not substantially adhere to the skin surface. , a weak or non-adhesive hydrogel layer.

Since the electrode pad of the present invention uses a flexible, weak or non-adhesive hydrogel layer in close contact with the skin surface, the pad can be used with a fixing band, adhesive sheet, tape, strip member, or Used with a fixing member such as a clip.

In the drawings, 1 is an adhesive hydrogel layer, and 2 is a weak or non-adhesive hydrogel layer, which are laminated directly or via a core material 3 such as woven fabric or nonwoven fabric.

These laminated gel bodies generally have a side or a diameter of 5 to 5.
5oTrI! It is configured in an arbitrary shape such as a square, rectangular, circular, or donut shape, and its total thickness is 0.
．． The range is 1 to 10771771.

The adhesive hydrogel includes a gelled product obtained by mixing and stirring water and one or more water-soluble substances such as agar, carrageenin, gum arabic, polyvinylpyrrolidone, polyvinyl alcohol, gelatin, and carboxymethyl cellulose;
Gelled product produced by reacting a hydrophilic polyether urethane prepolymer with water, polyacrylic acid and/or polyacrylate, and a crosslinking agent such as triglycidyl isocyanurate, polyethylene glycol diglycidyl ether, glycerin triglycidyl ether, etc. Examples include sticky water-containing gels such as cross-linked gels made by reacting compounds having at least two epoxy groups in the molecule with water. An electrolyte can be added for the purpose of improving conductivity, and a polyhydric alcohol such as glycerin or propylene glycol can be added for the purpose of improving adhesiveness.

In addition, weak or non-adhesive hydrogels with flexibility can be obtained by increasing the amount of crosslinking agent to extremely increase the degree of crosslinking of the system, or by adjusting the amount of water or polyhydric alcohol. obtained by doing.

Note that the weak or non-adhesive hydrogel layer is composed of a hydrogel that has slight tackiness or almost no tackiness, and has good adhesion to the skin by following its shape. It is something.

The electrode pad configured in this manner is used, for example, by adhering the sticky hydrogel layer side of the pad to the electrode plate surface of a clip having an electrode plate to which a lead wire is connected.

The electrode pad of the present invention has strong adhesive on the electrode side and weak or non-adhesive on the skin contact side, so the electrode pad will not be removed by the skin after measurement, and will not leave any residue on the skin surface. It has the characteristic that there is no adhesion.

Furthermore, since it has weak or non-adhesive properties on one side, it has the advantage of being easy to handle when adhering to electrodes.

[Brief explanation of the drawing]

The drawing is a side view showing an example of the present invention. 1... Adhesive hydrogel layer, 2... Weak or non-adhesive hydrogel layer.

Claims (1)

[Scope of utility model registration request] An electrode pad characterized in that an adhesive hydrogel layer and a weak or non-adhesive hydrogel layer are laminated.