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Publication numberUS3518984 A
Publication typeGrant
Publication dateJul 7, 1970
Filing dateOct 12, 1967
Priority dateOct 12, 1967
Publication numberUS 3518984 A, US 3518984A, US-A-3518984, US3518984 A, US3518984A
InventorsMason Robert E
Original AssigneeUniv Johns Hopkins
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Packaged diagnostic electrode device
US 3518984 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

July 7, 1970 R. E. MAscN PACKAGED DIAGNOSTIC ELECTRODE DEVICE Filed Oct. l2, 1967 FIG.1

ROBERT E. MASON INVENTOR United States Patent 3,518,984 PACKAGED DIAGNOSTIC ELECTRODE DEVICE Robert E. Mason, Baltimore, Md., assignor to The Johns Hopkins University, a corporation of Maryland Filed Oct. 12, 1967, Ser. No. 674,970 Int. Cl. A61b 5/04 ABSTRACT F THE DISCLOSURE A prepared cardiograph type of electrode complete with electrode -paste as a one-use article of commerce is described. The electrode includes a conductive mesh member sandwiched centrally between non-conductive washers, with an insulated electric lead connected to the conductive mesh and passed out of the assembly through a tight-fitting permanent upper cover. The holes of the nonconductive washers and of a third perforated member below the sandwiching washers form a cavity |which contains electrode paste, immersing the conductive mesh member. The paste is retained by a sealing cover which is temporary and which additionally protects the pressure sensitive area of the device by which it is afiixed to the skin of a patient.

This invention relates generally to packaging devices, and more particularly it pertains to an electrode device complete with electrolyte as an article of commerce.

The medical trade is increasingly aware of the advantages of one-use disposable diagnostic devices. In my copending patent application, Ser. No. 558,316, filed J une 17, 1966 entitled Electrode Device, which application is now in allowance with the final fee paid, so that patent issuance is expected in due course, there is described an electrode for body attachment which in addition to possessing other desirable attributes can be manufactured so economically as to be a one-use article.

Another object of this invention is to provide an electrode for body attachment which is of very low mass and one which adheres tightly to the skin and which conducts solely through a layer of electrode paste, and one in which the electrode paste is in place in the device.

Another object of this invention is to provide an inexpensive one-use disposable electrode including electrode paste which provides uniform area of contact despite variations in the quantity of electrode paste used.

Still another object of this invention is to provide an electrocardiograph electrode including electrode paste in position which is free of casual metal-to-skin contact under Working stress of the patient to give reliablelEKG records free from baseline drift despite rapid respiration and sweating.

To save time and possible waste of material, it is an object of the present invention to include the proper charge of electrode paste already in place in the device with provision for safe handling and storage as Iwill be related.

lOther objects and attendant advantages of this invention will become more readily apparent and understood from the detailed specification and accompanying single sheet of drawings in which:

FIG. 1 is an exploded View of the components of a novel electrode encorporating features of this invention; and

FIG. 2 is a cross section of the electrode of FIG. 1 as assembled and ready for shipment.

Referring now to the figures of the drawings, reference number indicates generally an electrode. This electrode 10 comprises an assembly made up of two centrally apertured wafers 12 and 14 of very thin flexible plastic sheet.

A washer or collar 18 of flexible plastic approximately one-half mm. in thickness is centrally placed on the bottom wafer 14 and on top of this a -disc 16 of fine stainless steel wire cloth is centered. A fine flexible insulated wire 20 is soldered to the top of this disc 16 and brought up through the apertured top wafer 12 and the latter is then brought down over the assembly and welded or cemented to the bottom wafer 14. The underside of wafer 14 is coated with pressure sensitive adhesive 26.

A tight-fitting washer 11 of plastic is reeved over the -wire 20 and cemented to the Wafer 12 so as to cover the aperture thereof with a good margin. A measured charge of electrode paste 28 is then inserted through the lower apertured disc 24 so as to embed the disc 16. A temporary plastic disc .25, preferably having a waxed paper surfacing 24, is applied to the adhesive covering 26 of the disc 14 to protect the latter and to seal off the contained electrode paste 28 in the assembly.

This temporary disc 25 Iwith its -wax paper 24 will peel easily from the adhesive 26 when the electrode 10 is being placed in service and will allow the immediate afiixing to the skin of the patient by pressure.

Obviously many modifications and variations of the present invention are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.

What s claimed is:

1. As an article of manufacture, a diagnostic electrode of single use impregnated type, comprising, first and second centrally apertured non-metallic flexible elements, Iwith the outer edges thereof sealed together, a third centrally apertured non-metallic flexible element positioned between said first and second elements to space respective central portions of said first and second elements from each other, with the apertures of said first, second and third elements being in axial alignment with each other thereby together defining a space for containing electrode paste, a predetermined charge of electrode paste in Said space, rnetallic mesh material positioned between one of said first and `second elements and said third element and in electrical contact with said electrode paste, electrical lead means secured to said mesh material and passing through the aperture of one of said first and second elements, and closure means for closing the exposed faces of said first and second elements, thereby retaining the electrode paste in said space. p

2. A diagnostic electrode as recited in claim 1, wherein the other of said first and second elements has an adhesive on its exposed race, with the closure means for the other of said first and second elements being removably secured thereto and in contact with said electrode paste, whereby said-electrode paste is exposed for contact on removal of said removably secured closure means.

3. A diagnostic electrode as recited in claim 1, wherein said first and second elements consist of two centrally apertured wafers formed of thin flexible plastic sheet.

4. A diagnostic electrode as recited in claim 3, wherein said third element consists of a collar of greater thickness than said first and second elements, and wherein the thickness of said collar is interposed bet-Ween said metallic mesh material .and said removably secured closure means.

5. A diagnostic electrode as recited in claim 4, wherein said metallic mesh material consists of a fine stainless wire cloth.

6. A diagnostic electrode as recited in claim 5, wherein said electrode is of low mass, and has a uniform area of contact defined by a said element central aperture on removal of said removably secured closure means.

7. A diagnostic electrode of single use impregnated type, comprising, rst, second and third centrally apertured non-metallic exi-ble elements, said third centrally apertured non-metallic exib-le element being positioned and contained between said first and second elements to space said first and second elements from each other, with the apertures of said first, second and third elements being in axial alignment with each other, thereby defining a space for containing electrode paste, conductive mesh material means having a predetermined charge of electrode paste, said conductive mesh material means and electrode paste positioned in axial alignment with said apertures and spanning said apertures, signal means including an electrical lead secured to said conductive mesh material means, and closure means Ifor closing the apertures of the first and third exible elements.

i8. A diagnostic electrode as recited in claim 7, and additionally means including an adhesive positioned on the exposed face of the other of said first and second elements for removably securing its respective closure means thereto.

9. A diagnostic electrode of single use impregnated type, comprising: plural, apertured non-metallic spacer means, all said spacer means being flexible and all said apertures being aligned, mesh conductor means secured between plural of said spacer means across the apertures thereof, a predetermined charge of electrode paste positioned in said aligned apertures of said non-metallic spacer means in electrical contact with the mesh conductor means, signal means including an electrical lead secured to said mesh conductor means and extending to the exterior of the diagnostic electrode, and means for closing said aligned apertures of said non-metallic spacer means, thereby retaining the predetermined charge of electrode paste within the diagnostic electrode.

`10. A diagnostic electrode as recited in claim 9, wherein said closure means are removably mounted to said spaced means.

` References Cited UNITED STATES PATENTS WILLIAM E. KAMM, Primary Examiner U.S. C1. X.'R. 128-417

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3170459 *Mar 20, 1962Feb 23, 1965Kelly Glenn FBio-medical instrumentation electrode
US3187745 *Aug 1, 1961Jun 8, 1965Melpar IncElectrodes
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3735766 *Apr 19, 1971May 29, 1973Gen ElectricOptional unipolar-bipolar body organ stimulator
US3747590 *Jun 21, 1971Jul 24, 1973Nat Cable Molding CorpBiopotential electrode
US3805769 *May 24, 1973Apr 23, 1974Sessions RDisposable electrode
US3830229 *Aug 9, 1972Aug 20, 1974Johnson JDisposable body electrodes
US3845757 *Jul 12, 1972Nov 5, 1974Minnesota Mining & MfgBiomedical monitoring electrode
US3868946 *Jul 13, 1973Mar 4, 1975Hurley James SMedical electrode
US3901218 *Oct 26, 1973Aug 26, 1975Buchalter MartinDisposable electrode
US3993049 *Dec 26, 1974Nov 23, 1976Kater John A RElectrodes and materials therefor
US4016869 *Oct 30, 1975Apr 12, 1977Siemens AktiengesellschaftSignal collector system
US4066078 *Feb 5, 1976Jan 3, 1978Johnson & JohnsonDisposable electrode
US4079731 *Jul 1, 1976Mar 21, 1978Cardiolink Electrodes, Ltd.Medical electrodes
US4102331 *Sep 21, 1976Jul 25, 1978Datascope CorporationDevice for transmitting electrical energy
US4317278 *Jan 8, 1980Mar 2, 1982Ipco CorporationMethod for manufacturing a disposable electrode
US4362165 *Jan 8, 1980Dec 7, 1982Ipco CorporationStable gel electrode
US4409981 *Jul 20, 1981Oct 18, 1983Minnesota Mining And Manufacturing CompanyMedical electrode
US4556066 *Nov 4, 1983Dec 3, 1985The Kendall CompanyUltrasound acoustical coupling pad
US4579120 *Jan 29, 1985Apr 1, 1986Cordis CorporationStrain relief for percutaneous lead
US4635642 *Jul 18, 1985Jan 13, 1987American Hospital Supply CorporationMedical electrode with reusable conductor
US4699679 *Oct 16, 1986Oct 13, 1987American Hospital Supply CorporationMethod of manufacturing medical electrode pads
US4736752 *Nov 28, 1986Apr 12, 1988Axelgaard Manufacturing Co., Ltd.Transcutaneous medical electrode
US4776350 *Jan 7, 1986Oct 11, 1988Physio-Control CorporationExternal electrode for heart stimulation and connector therefor
US4827939 *Mar 14, 1988May 9, 1989Baxter International Inc.Medical electrode with reusable conductor and method of manufacture
US4852585 *Feb 9, 1988Aug 1, 1989Darox CorporationElectrocardiology
US6122554 *Jul 22, 1998Sep 19, 2000Sport-Elec S.A.Electrode assembly for electrotherapy comprising an adherent layer and an absorbent component for supplying water to said adherent layer
US6950688 *Apr 4, 2003Sep 27, 2005Axelgaard Manufacturing Company. Ltd.Dual element sensor medical electrode
DE2302618A1 *Jan 19, 1973Jul 26, 1973Ndm CorpElektrode zur aufnahme bioelektrischer potentiale
WO2002039894A1 *Nov 13, 2001May 23, 2002Axelgaard Mfg Co LtdDual element sensor medical electrode
Classifications
U.S. Classification600/392
International ClassificationA61N1/04, A61B5/0408
Cooperative ClassificationA61B5/0408, A61N1/0492
European ClassificationA61N1/04E2P, A61B5/0408