Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS1973911 A
Publication typeGrant
Publication dateSep 18, 1934
Filing dateOct 28, 1933
Priority dateOct 28, 1933
Publication numberUS 1973911 A, US 1973911A, US-A-1973911, US1973911 A, US1973911A
InventorsSamuel Ruben
Original AssigneeSamuel Ruben
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electrode for therapeutic devices
US 1973911 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Sept. 18, 1934' s. RUBEN 1,973,911

ELECTRODE FOR THERAPEUTIC DEVICES Filed 001;. 28 1933 IN VENTOR ATTORNEY Patented Sept. 18, 1934 UNITED STATES PATENT OFFICE Claims.

This invention relates to electrodes for use in therapeutic devices; specifically for use in connection with the application of high frequency currents to the body.

An object is to provide such an electrode which is' highly flexible and adaptable for use with any part of the body.

Another object of the invention is to provide such an electrode at a very low cost so that it may be destroyed after a single use or application.

A further object of the invention is to provide such an electrode which is light in weight and which has an adhesive surface so that it may be used with comfort by the patient.

Other objects will be apparent from the disclosure and from the drawing in which Figure 1 shows an electrode; partly cut away in section and Figure 2 is an end view of Figure 1.

Heretofore, there have been used for such applications, electrodes generally composed of lead sheet or foil which has been bent or formed into shape. In many uses, these electrodes have not been sufficiently flexible or adaptable for the specific purposes required. Furthermore,

these electrodes have been limited in the maximum current applicable, due i localized contact and contact resistance.

I have found that by utilizing a flexible and plastic electrode composed of a non-fibrous cellulose sheet which has been rendered highly conductive by plasticization and impregnation with a conductive material such as glycol, glycerol or glycol borate and then rendered adhesive by the addition of a mucilaginous material, that a light weight and universally applicable electrode can be made, capable of allowing the application without skin burns, of currents of greater magnitude than heretofore possible.

In order tohave .minimum internal electrode resistance and to more uniformly distribute the applied current over the entire electrode area, a very thin tin foil sheet is cemented on one side of the conductive cellulose sheet.

The flexible sheet material used is preferably a non-fibrous regenerated cellulose such as is popularly designated cellophane although other materials such as Kodapak or Protectoid (cellulose acetate sheets), sheet gelatin or porous membranes may be used in combination with proper plasticizing conductive and adhesive compounds. The practically non-porous cellophane, however, has given the best results to date.

In the preparation of the material, the cellophane" is preferably plasticized by immersion in an aqueous glycol or glycerol compound. It is then passed through and impregnated with a heated conductive compound such as glycol or glycerol borate with which is combined an adhesive such as water soluble glue, gum arabic, gelatin or other mucilaginous material. Additional adhesive may be brushed on after impregnation in which event it combines with the impregnated cellophane and itself becomes conductive.

The glycol or glycerol borates are preferred as the active conductive materials because of their low vapor pressure and because of their hygroscopic character which tends to maintain the cellulose in plastic conductive condition; however, other compounds such as the chlorides, phosphates, etc., may be substituted.

On one side of this flexible conductive cellophane sheet is then cemented a very thin metal foil, preferably tinfoil of a thickness of approximately 0.00025". The cellophane itself is preferably about 0.001 thick, and its adhesive surface affords a good cement for the foil.

This combination of conductive plastic mate-' rial and adhesive, allows the electrode to be placed on any part of the body and affords an intimate contact with the skin, thus allowing a minimum contact resistance drop and maximum distribution of current over the entire contacting area. The adhesive character of the material is such that the electrode weight is easily sustained and intimate contact during treatment is obtained without the use of binding straps or other commonly used accessories.

In Figure 1 of the drawing, tin foil (1) is cemented on impregnated plasticized cellophane (2) the adhesive surface of which (3) makes contact with the body of the patient (not shown).

In Figure 2, like numbers indicate like parts.

What I claim as new and desire to secure by Letters Patent, is

1. A flexible surface electrode for therapeutic purposes comprising an electrically conductive non-fibrous organic sheet plasticized with a ma-' terial chosen from the glycol and glycerol compounds, said sheet being adapted to be directly applied to the human body, and a metal backing conductively cemented on said sheet.

2. A flexible surface electrode for therapeutic purposes comprising an electrically conductive non-fibrous organic sheet plasticized with a material chosen from the glycol and glycerol borate compounds, said sheet being adapted to be directly applied to the human body, and a metal backing cemented on said sheet.

pounds, said sheet being adapted to be directly applied to the human body, and a metal backing conduct-ively cemented on said sheet.

5. A flexible electrode for therapeutic purposes comprising an electrolyte impregnated membrane sheet material having a metal foil backing conductively cemented to one surface thereof and having on its other surface a water soluble mucilaginous adhesive adapted to be directly applied to the human body.

SAMUEL RUBEN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3720209 *Nov 25, 1970Mar 13, 1973Medical Plastics IncPlate electrode
US4317457 *Mar 27, 1979Mar 2, 1982Jacqueline GuillotElectroconducting cast forming a cutaneous electrode for applying electrical currents to the human body for therapeutic or aesthetic treatment and method of using such electroconducting cast
US4543958 *Dec 6, 1982Oct 1, 1985Ndm CorporationMedical electrode assembly
US4584962 *Nov 15, 1984Apr 29, 1986Ndm CorporationMedical electrodes and dispensing conditioner therefor
US4590089 *Nov 15, 1984May 20, 1986Ndm CorporationMedical electrodes and dispensing conditioner therefor
US4674511 *May 9, 1984Jun 23, 1987American Hospital Supply CorporationMedical electrode
US4838273 *Jun 22, 1987Jun 13, 1989Baxter International Inc.Medical electrode
US4866231 *Apr 1, 1988Sep 12, 1989Schneider David RMicrowave chamber for heating biological matter
US5782874 *Jan 24, 1997Jul 21, 1998Loos; Hendricus G.Method and apparatus for manipulating nervous systems
US6081744 *Jul 17, 1998Jun 27, 2000Loos; Hendricus G.Electric fringe field generator for manipulating nervous systems
US6167304 *Jun 17, 1999Dec 26, 2000Loos; Hendricus G.Pulse variability in electric field manipulation of nervous systems
US20110106226 *Jan 27, 2009May 5, 2011Andras SzaszFlexible and porous large-area electrode for heating
DE1016858B *Dec 10, 1954Oct 3, 1957Chemotenex Geraetebau G M B HFuer medizinische Baeder bestimmte Wanne aus mit Einlagen versehener Kunstharzmasse
Classifications
U.S. Classification607/152
International ClassificationA61N1/06
Cooperative ClassificationA61N1/06
European ClassificationA61N1/06