JPH0529688Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to various electrode materials for living bodies, including electrodes for pain relief and return electrode plates for electric scalpels.

[Conventional technology]

Patients who undergo open surgery do not feel pain from the surgical wound while they are under anesthesia before surgery, but they feel severe pain when the anesthesia wears off. Traditionally, analgesics have been administered to alleviate this pain, but this method is not desirable from the perspective of restoring physical strength. Therefore, recently, immediately after surgery, two long electrodes are pasted on both sides of the surgical wound, and electric current pulses of 1 to several hundred Hz and 1 to 10-odd mA are applied to paralyze the nerves and relieve pain. Analgesic methods are being tried. The size of the surgical wound varies widely, from a few centimeters as in appendix incisions, to more than 20 centimeters as in thoracostomy and hip arthroplasty, so the size of the electrodes required for these is also large. There will be many. Therefore, it is difficult to constantly store a wide variety of electrodes of appropriate sizes (or lengths) for all types of surgical wounds, due to the relationship between inventory levels and expiration dates.

Furthermore, electrocautery surgery performed using high-frequency energy of several MHz is currently extremely widely used.
The size (area) of the return electrode used should be determined by the high-frequency power used by the electric scalpel, but for example, when used on children, it may be necessary to , it is difficult to obtain an effective electrode area above a certain level with a normal return electrode,
As a result, there is a high possibility that a large current will flow in a small area, causing burns to the return electrode.

[The problem that the idea aims to solve]

As seen in the example of pain relief electrodes mentioned above, the purpose of the present invention is to be able to always provide electrodes of the required size by storing only a few types, and to make manufacturing easy and inexpensive. The object of the present invention is to provide an electrode material that can be used as an electric knife, or an electrode material that can provide a necessary effective electrode area regardless of body shape, as seen in the example of a return electrode plate for an electric scalpel.

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the present invention includes a skin-contacting part that has adhesiveness and conductivity over the entire surface, and a skin-contacting part that does not exceed the outer circumference of the skin-contacting part on the surface opposite to the skin-contacting side of the skin-contacting part. The conductive support part is bonded to the entire surface as shown in FIG. has a protrusion,
It is cut into a desired shape so as to include the skin-contacting part and the protruding part of the conductive support part, and the protruding part can be used as an electrical connection terminal.

[Effect]

In the present invention, the skin-contacting part and the conductive supporting part have the same outer circumference, neither of them protrudes laterally from the other, and the size is the same as that required for the target affected area or test area. The desired electrode is obtained by cutting the electrode into a shape that at least partially includes the protrusion of the conductive support, and connects the protrusion with the pain relief device using an alligator clip type electrode cord or the like. External devices such as electric scalpels and low-frequency treatment devices can be connected.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an electrode material according to the present invention, in which a biomedical electrode material 1 is formed by bending a cross section into a dogleg shape with a skin-contacting part 2, and one bent surface is placed on the skin-contacting side of the skin-contacting part 2. a first conductive support part 4 adhered to the surface opposite to the skin contact side 3; and a second rectangular conductive support part 5 similarly adhered to the surface of the skin contact part 2 opposite to the skin contact side 3; It consists of The other bent surface of the first conductive support portion 4 that is not bonded to the skin contact portion 2 projects upwardly from the bonded surface and extends in the longitudinal direction of the conductive support portion 5 to form a protrusion 6. There is.

FIG. 2 shows a perspective view of another embodiment of the electrode material according to the present invention, in which the biological electrode material 7 is bonded to the skin-contacting part 8 and the surface of the skin-contacting part 8 opposite to the skin-contacting side 9. It is composed of a conductive support section 10. This conductive support part 10 is partially folded to form a ⊥-shaped cross section,
The folded portion protrudes upward from the adhesive surface and extends in the longitudinal direction of the conductive support portion 10 to form a protrusion portion 11 .

The following materials can be used for the skin contact part.

(1) Karaya gum 40%, glycerin 55%, NaCl 5%
(2) Mixed and heated mixture of 30% carbon fiber (fiber length 5 mm) and 70% silicone adhesive (3) 34% acrylamide, 62% glycerin, N,
N'-methylenebisacrylamide 1%,
Mixed with 3% NaCl and heat-crosslinked (4) 40% flaky metal aluminum, 60% butyl rubber
The following materials can be used for the conductive support part.

(1) 2mm thick polyethylene foam laminated with aluminum foil (2) 40% acetylene black (particle size 42μm) and 60% dry rubber kneaded (3) 1mm thick urethane film with aluminum vapor deposited As mentioned above. In the embodiment of FIG. 1, the second electrically conductive support does not necessarily have to be electrically conductive. This is because only the first conductive support on one side is sufficient for the function of the conductive support. However, since the skin-contacting part uses an adhesive material due to its nature, some kind of cover is required in place of the second conductive support part.

Further, in the embodiments shown in FIGS. 1 and 2, the protrusion is formed at the center, but it may be formed not at the center but at a position shifted to either side.

Next, an example of the electrode for pain relief will be explained. Using the skin contact material exemplified above, the skin contact parts 2 and 8 are formed into sheets with a uniform thickness a of 0.1 to 5 mm, preferably 3 mm in FIGS. 1 and 2, and the conductive support parts 4, Laminate with 5 and 10. Width b is 10~
The length 1 in the vertical direction is preferably as long as 50 mm so that a desired pain relief electrode can be obtained by cutting the electrode material to an appropriate length. The protrusion length c of the protrusions 6 and 11 is 10 to 50 mm, and the inclination angle of the protrusion 6 is arbitrary. Figure 3 shows an example in which a pain relief electrode is applied to a surgical wound, in which two pieces of the electrode material shown in Figure 1 are cut 10 to 50 mm longer, preferably 20 to 30 mm longer than the length d of the surgical wound 12. electrode 13,1
4 is pasted parallel to the surgical wound 12 at a distance of 20 to 50 mm. Then, alligator clip type electrode cords 17 and 18 are connected to appropriate locations on the protrusions 15 and 16.

Next, an example of a return electrode will be described. Figures 1 and 2
In the figure, in the same way as in the case of pain relief electrodes.
Skin contact part 2 with a thickness a of 0.1 to 5 mm, preferably 3 mm,
8 is formed and laminated with the conductive support parts 4, 5, and 10. In the case of a return electrode, the width b is sufficiently large to accommodate various shapes, and is set to 20 to 300 mm. It is advantageous to have a free size for the length l. Fig. 4 shows an example of application to a patient who has suffered burns over a wide area of the body.
A return electrode plate 21 is made by cutting an electrode material according to the shape of the non-burn area so as not to touch the burn area 20, and the return electrode plate cord 23 is connected to the protruding part 22. do.

FIG. 5 shows a method of manufacturing the electrode material of FIG. 1. A plurality of conductive support members 25 each having one side bent to form a dogleg shape are sequentially arranged and adhered to a large skin contact member 24 so that the bent side 26 protrudes outward. Both the skin contact part and the conductive support member are cut along the chain line 27 to produce an electrode material. In this electrode material, the side surfaces of the skin-contacting part and the conductive support part are aligned, and there is no part where either side protrudes.

[Effect of idea]

(1) Electrodes for pain relief (a) Electrodes with the optimal length can be obtained according to the size of the surgical wound, and only one type is needed in stock.

(b) Since both the skin contact part and the conductive support part can be formed by cutting at the same time, manufacturing is extremely easy and the manufacturing cost is low, thereby reducing the economic burden on the user.

(c) The electrode lead wire can be connected to any part of the protrusion so as not to interfere with postoperative management.

(2) Return electrode (a) Since it can be cut into any shape depending on the situation of the attachment site, a sufficient attachment area can always be obtained and there is no risk of return electrode burns. In other words, it cannot be pasted due to burns.
If the return electrode plate is difficult to apply due to thick hair or rough skin, you can cut the return electrode plate to the required area by avoiding areas that are inappropriate for the return electrode plate. If the back alone does not provide enough area, you can cut it in a shape that extends to the arms and legs.

(b) Since both the skin contact part and the conductive support part can be formed by cutting at the same time, manufacturing is extremely easy and the manufacturing cost is low, thereby reducing the economic burden on the user.

(c) The return electrode cord can be connected to any location on the protrusion as convenient for the treatment.

The biological electrode material according to the present invention can also be used for TENS electrodes, electrocardiogram electrodes, low-frequency treatment electrodes, and other electrodes to obtain the same effects as described above.

As described above, according to the present invention, the required electrode can be easily obtained from the electrode material according to the required size and shape, and there is no need to keep a wide variety of products in stock as in the past. Moreover, since the skin contact part and the conductive support part have the same outer circumferential shape,
The manufacturing process of the electrode material itself has become extremely simple,
It can be manufactured at low cost.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views of different embodiments of the present invention, Figure 3 is an explanatory diagram of the case where a pain relief electrode made from the electrode material shown in Figure 1 is applied to a surgical wound, FIG. 4 is an explanatory diagram of the case where a return electrode made of the electrode material shown in FIG. 1 is applied to a burn site, and FIG. 5 is an explanatory diagram of the method for manufacturing the electrode material of the present invention. 1, 7...Bioelectrode material, 2,8...Skin contact part,
3, 9...Skin contact side of the skin contact part, 4, 10...Conductive support part, 6, 11...Protrusion part.

Claims (1)

[Scope of utility model registration request] A skin-contacting part that is adhesive and conductive over the entire surface, and a conductive support part that is adhered to the entire surface of the skin-contacting part on the opposite side of the skin-contacting part so as not to exceed the outer periphery of the skin-contacting part. The conductive support part has a protruding part on the side opposite to the skin contact part that protrudes above the adhesive surface with the skin contact part and extends in the longitudinal direction of the conductive support part, and the skin contact part and the conductive support part A biological electrode material characterized in that the part is formed so as to be cut into a desired shape so as to include the protrusion of the conductive support part, and the protrusion can be used as an electrical connection terminal. .