DE1950994A1 - Body electrode - Google Patents

Description

UNITED AIRGRAi ¹ T CORPORATION

400 Main Street

East Hartford

Connecticut 06108

UNITED STATES.

BODY ELECTRODE

Priority: USA 785,577
Patent application dated December 20, 1968

This invention relates to body electrodes !! and in particular to an improved, one-piece body electrode,

In electromedical technology it is known that the »electrical Current to and through a patient's body through an electrode attached with the help of an adhesive tape or similar attached to the patient's skin. To improve the conductivity between the electrode and the skin, An electrically conductive paste or jelly is often applied to the skin at the contact point of the electrode before the electrode is attached to the patient's body. An electrode of this type is disclosed in U.S. U.S. Patent 3,085,577 to Berman et al.

Much has recently been expended in order to clarify the origin of the skin irritation, which until then had been ascribed to the contents of the electrically conductive paste oil jelly * Although the A ar; be, ag different from patient to patient iet ₃ so get -J. ο oh almost all patients have a rash vr.mn the paste / "'"': / .. '.;ii'o-'id more al :; Lashed on the skin for 24 hours. will. As in -.- ·· .. "/ orkergenamit-en patent by Bergan et gX "bo; 3e * i5? Ieben, -.Ι - ;! · these electrodes will make your fatigue easier: uoii _? du He ^ ee; -m bj ■ / :. '; ru 'oxvi / c'-e-- to a? We would like ^ Ad-ieiä ouilno Fc-r-skurv «cVurch ι

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BATH ORIGINAL

controlled a telemetry device in the doctor's office will. Thus it is possible for the patient to use the body electrode for some time.

Bs was observed that the electrically conductive paste became discolored some time after the paste and the electrode have been applied to the patient. This is at least partially that Result of an electrolytic reaction of the electrically conductive paste with the known body electrodes, which are mostly made of metal exist. For example, an electrode that is often used consists of a copper electrode which is coated with nickel and which is shaped by grinding, while this grinding becomes a Part of the nickel "removed from the copper surface. Although here the copper only penetrates in very few and small places, the conductive jelly can react with it anyway, especially when there is electricity. It is believed that due to the galvanic reaction between the different metals and the conductive paste, compounds are created that cause a rash. This suggests that not the jelly itself but the connection of the electrode with the jelly, along with the electric current, caused the rash causes.

An object of the present invention is to provide a simple and cheap body electrode to describe "that in conjunction, with the electrically conductive paste or {jalee and the electrical Electricity does not cause a rash.

In accordance with the present invention "© iae body electrode a simple" male SsIl ₉ composed of a relatively inert material _t such as "eg" a Piieaol - && rz- ₉ a fluorocarbon coated with G-rap & it, or, eia r @ lati? inactive metal like an aslnes slebebasia -am claisit die electrode as d © x ^; Skin ds @ Patieatea zm b®j? Sgtie? © ao

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BATH

the name of the construction; Mass production at a low price, thus promoting the use of electrodes to control the heart waves as well as in other "known electromedical methods. as was the Pall for conventional electrodes.

The foregoing and other objects and advantages of the present Invention will become clearer * from the following description a preferred application shown in the drawings

Figure 1 is a cross section of a body electrode in accordance With the present invention, also the protective layers, which can be peeled off, and which the electrode during protect the transport and manipulation, are shown j

Figure 2 is a top plan view of an adhesive sheet with the electrode can be used, has a hole in the middle and has a square configuration;

Figure 3 is a top plan view of an adhesive sheet with the electrode can be used a circular symmetrical Has configuration and cut into the slots in the shape of a cross which form such a passage for the electrode j

Figure 4- is a cross-section of the electrode, on the patient's body, during use.

With regard to Pigur Ij, the body electrode in accordance with the present invention comprises a main part 10 which consists of a plastic, such as nylon or Silikenguami, which is covered with an electrically conductive material such as carbon or graphite with a particularly good connection is polytetrafluoroethylene or Teflon (R) coated with graphite known under the rake name "! Formulation IiF-219 ¹¹ from Polymer Corporation, Eeading, Pennsylvania, the exact composition of which has not been disclosed.

109818/1289 original inspected.

1350994

A second preferred material is a castable conductive material Phenolic resin under the Beckwith identification number 0575 Carbon Corporation, Van Nuys, Cslifornia, and the composition of which was not disclosed. As alternative the electrode can contain copper coated with nickel or silver or a solid conductive metal. By the shape of the main part of the electrode 10 becomes a large one Contact surface 12 with the skin and a neck piece 14 on one Crown 16 is placed. This forms the male part of a push button, in the same way as the one in said Berman et al patent, and how it

™ is well known in the art. As an alternative, the neck part 14 just run out *] to avoid two-part pouring. An adhesive sheet 18 is on the neck portion 14, 14 of the electrode 10 attached to easily attach the electrode 10 to the patient's skin. The adhesive film 18 can have the shape of the film 18a shown in FIG. 2, or else the shape of the film 18b shown in FIG. 3. The general The shape can therefore be either square or circular or some other shape, and the film must contain a hole 20 to let through the neck portion 14 and the crown 16 of the electrode, or it can contain slots 22 (these can simple cuts, slits or notches). Of course you can

^ also other openings for the neck and the crown of the electrode 10 can be cut into the film 18.

Although glue over the entire bottom edge 24 of the Klebeiiiie 18- can be distributed, it is not necessary for the adhesive to touch the electrode 10. That is, the part of the slide 18 of the contacts the electrode 10 can be without adhesive if so desired. This is because the adhesive is holding the electrode in either case sticks to the wearer's skin, and because a combination of adhesive with a pair of peelable Layers 26 and 28 hold the various parts together during transportation and manipulation. The ones to be deducted Parts 26, 28 can take any shape, like that in the Berman et al patent described wuojfe.

The body electrode in accordance with the present one

10 9816/1269
¹ ^ BAD ORIGINAL

iicfindung is attached to the patient's skin in a known manner, as shown in Figure 4-. For this purpose, a small amount of conductive jelly or paste 30 to a l ^l eil of the skin 32 of the carrier to which the electrode is attached, can be applied. The protective layers 26, 28 (FIG. 1) to be peeled off are then peeled off so that the electrode can be attached directly to the part covered with conductive paste 30. The adhesive sheet 18 is then printed onto the skin so as to hold the conductive paste or jelly under the adhesive tape and to connect the surface 12 of the electrode 10 in an electrically conductive manner to the paste $ 0 at the point of contact with the skin. The nature of the contact is described in detail in the said Berman eb al patent.

From all of this it can be seen that an electrode in accordance with the present invention avoids the use of electrolytically active metal parts in contact with the skin, or in contact with the conductive paste or jelly. This avoids electrolysis and reduces the possibility of "skin-irritating compounds" being produced. It is clear that a body electrode in accordance with the present invention can be manufactured very cheaply since it contains only two parts, and the electrode part 10 can Although be cast using the methods well known in the art. the invention has been described with reference to a preferred application, this is not intended to limit the invention but this only served to explain the Inv-i nrixxnrr better.

109816/1269

Claims (3)

- 6 claims 1. 'A body electrode characterized by: a body electrode with an enlarged skin coribact surface, a neck and a crown part which form the male part of a snap fastener; an adhesive film around said electrode on the skin of the To attach the carrier and which contains a passage for the neck and the crown of the electrode. 2. Body electrode according to claim 1, characterized in that said electrode made of coated with carbon Polytetrafluoroethylene is made. 3. Body electrode according to claim 1, characterized. that said electrode is made of a conductive phenolic resin. BATH ORIGINAL 109816/1269