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Publication numberUS542508 A
Publication typeGrant
Publication dateJul 9, 1895
Filing dateMay 15, 1895
Publication numberUS 542508 A, US 542508A, US-A-542508, US542508 A, US542508A
InventorsAndrew P. Van Tuyl
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Andrew p
US 542508 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


No. 542,508. Patented Jul 9, 1895.



SPECIFICATION forming part of Letters Patent No. 542,508, dated July 9, 1895.

Application filed May 15, 1895. Serial No. 549,400. on model) To all whom it may concern.-

Be it known that I, ANDREW P. VAN TU YL, .Ir., a citizen of the United States, residing at Brooklymin the county of Kings and State of New York, have invented an Improvement in Medical Electrodes, of which the following is a specification.

The object of the present invention is tov provide a medical electrode for electrotherapeutic use,where the medical or other solutions or liquids are required to be held against the skin of the body during the passage of an electric current through the same for remedial purposes, and this medical electrode is very convenient, because the ahsorbentmaterial can be readily attached or detached, and the liquid that is applied to the same is retained and not liable to drop or run away during its application to the body.

shows the face of the instrument with the disk of.felt and one of the buttons removed, and Fig. 5 is an elevation of the back of the instrument with a portion of the back plate removed.

The sponge-plate A. is of metal and prefer ablysquare or triangular, with the corners J bent over to form hooks to receive between them the sponge or felt F, which is preferably circular in form and of suitable thickness for holding the required amount of liquid or semi-liquid medicinal material to be applied to the surface of the body as an electric ourrent is passed through the same.

The back plate B is advantageously of nonconducting material, such as hard rubber, and between the same and the sponge-plate A is introduced the inner edges of the rubber skirt S, so that such edges will be clamped by screwing the sponge-plate and back plate together by one or more screws, represented at H, and this skirt S extends out around the sponge or felt F, and such skirt is conical in shape, so that its edges will set closely against the skin for confining any liquid with which the sponge or felt Fis saturated.

The conductor Vi is provided with an insulating-covering and is advantageously sufticiently rigid to form a handle O to the instrument, and the conductor W is permanently connected to the sponge-plate A by solder or otherwise. I have represented such conductor W as permanently connected with the nut N for the screw H, so that the parts are held reliably together, but can be detached for cleaning when desired, and it will be observed that the edges of the skirt S, be-

ing clamped, will prevent moisture passing in between the sponge-plate A and the back plate B.

Any desired device may be provided for receiving the battery-wire. I have, however, represented the buttons D connected together by the screw h, that passes through the buttons and through a nut M, and the springlink 15 is adapted to pass around the screw h, between the nuts n M, and it is provided with an eye into which may be received one of the conductors, through which the current is supplied from a suitable battery or other source of electric energy.

It will now be understood that when the sponge-plate A, a battery-wire isconnected I to the link 78, and the apparatus is applied to the desired part of the body with the sponge or felt F, resting against the skin, and the moisture is retained by the rubber skirt S, and the electric current passes through the sponge-plate and through the medicated liquid to the body, the patient holding the other electrode from the battery, or the same. being applied in any other desired manner to the body, and the electric current passing into the body carries with it the medicinal materials or acts upon'the same, so as to render them eflicient as a remedial agent.

The apparatus is easily taken apart and cleaned when not desired for use, and the apparatus being small and free from projec- IOO tions or binding posts the same can be applied to any desired part of the body'without any risk of injury or inconvenience to the patient.

having its corners turned over to form hooks,"

a sponge or absorbent material heldby such hooks, a conductor extending out fromsuch sponge plate and having an insulating covering, a back plate connected with the sponge plate and an elastic skirt snrrou-ndingt'he sponge plate and having its edges held be-' tween such sponge plate and the back plate,-

substantially as set forth.

3. The combination in an electrode for medical purposes, of a sponge plate and a conductor therewith connected, sponge or other absorbent material upon such sponge pla'te,'aud

a water-proof skirt connected with the sponge plate and surrounding the felt or sponge, substantially as set forth.

4. The combination in a medical electrode having a plate with its corners bent over to form hooks, of a removable sponge or felt for receiving the medicated liquid, a conductor connected with the sponge plate, and a back plate of insulating material, and a skirt having its inner edge clamped between the sponge plateand the back plate and surrounding the sponge or porous material, substantially as set forth.

5. The combination in a medical electrode, of a sponge plate, an insulated conductor extending out from the same, and buttons at the outer end of the conductor, a screw for connecting the buttons and the conductor and a spring link between the buttons and to which one of the battery conductors is connected, substantially as set forth.

Signed by me this ith day of May, 1895. ANDREW P. VAN TUYL, JR. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2513568 *Apr 24, 1947Jul 4, 1950Fischer & Co H GElectrode
US3187745 *Aug 1, 1961Jun 8, 1965Melpar IncElectrodes
US4383529 *Nov 3, 1980May 17, 1983Wescor, Inc.Iontophoretic electrode device, method and gel insert
US4432367 *Mar 3, 1982Feb 21, 1984Piesinger Gregory HFor receiving electric impulses produced by the heart muscle
US6319240 *May 25, 1999Nov 20, 2001Iomed, Inc.Methods and apparatus for ocular iontophoresis
US6539251Aug 3, 2001Mar 25, 2003Iomed, Inc.Ocular iontophoretic apparatus
US6546283Oct 18, 2000Apr 8, 2003Iomed, Inc.High current density iontophoretic device and method of use thereof
US7252655Aug 3, 2001Aug 7, 2007Iomed, Inc.Ocular iontophoretic apparatus handle
Cooperative ClassificationA61N1/0448