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US4870969A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrode application system and method for electroconvulsive therapy

Assignee: SOMATICS Inc 910 SHERWOOD DRIVE UNIT 18 LAKE BLUFF ILLINOIS 60044 A CORP OF ILLINOIS
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Filing: 1988-09-16
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Granted: 1989-10-03
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Expires: 2008-09-16
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Abstract

Abstract A medical method and system in electroconvulsive therapy (ECT) uses a disposable electrode, which does not use a liquid, such as conductive gel or saline solution. The electrode is a flexible multi-layer pad having an adhesive surface which is covered by a removable cover sheet. The pad comprises a layer of adhesive non-liquid conductive hydrogel, a thin conductive plastic film layer, a conductive metal foil layer connected to a wire lead, and an insulative plastic layer, preferably a plastic foam.

Inventors

  • 👤 Conrad M. Swartz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 20:05
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0472; A61N1/0492; A61N1/0408; A61N1/18; A61N1/32; A61N1/38; A61N1/0452

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 162 words
The system in electroconvulsive therapy (ECT) including: an ECT instrument means which, under operator control, produces a burst of electrical waves sufficient to induce a seizure in the brain of a human patient; a one-use disposable connector-pad assembly comprising a connector plug portion removably electrically connected to said ECT instrument means, a flexible multi-layer laminated electrode pad and a wire connected to said plug portion; said pad applying said electrical waves to the skin of the patient and including an adhesive conductive layer which is a plastic conductive film having first and second surfaces, a metal foil layer electrically connected to said wire and covering said adhesive layer second surface, an insulative layer covering said metal foil layer; and a cover layer removably covering said adhesive layer first surface; wherein said wire is a multi-strand wire of at least three metal strands and said strands at their ends are separated, extend across and are electrically connected to the said metal foil layer.
Claim 2
Independent Claim 162 words
The system in electroconvulsive therapy (ECT) including: an ECT instrument means which, under operator control, produces a burst of electrical waves sufficient to induce a seizure in the brain of a human patient; a one-use disposable connector-pad assembly comprising a connector plug portion removably electrically connected to said ECT instrument means, a flexible multi-layer laminated electrode pad and a wire connected to said plug portion; said pad applying said electrical waves to the skin of the patient and including an adhesive conductive layer which is a plastic conductive film having first and second surfaces, a metal foil layer electrically connected to said wire and covering said adhesive layer second surface, an insulative layer covering said metal foil layer; and a cover layer removably covering said adhesive layer first surface; wherein said wire is a multi-strand wire of at least three metal strands and said strands at their ends are separated, extend across and are electrically connected to the said metal foil layer.
Claim 3
Dependent Claim 14 words
The ECT system of claim 1 wherein said insulative layer is a plastic film.
Claim 4
Dependent Claim 12 words
The ECT system of claim 1 wherein said foil is aluminum foil.
Claim 5
Dependent Claim 17 words
The ECT system of claim 1 wherein said adhesive layer is a non-flowing electrolyte low impedance hydrogel.
Claim 6
Dependent Claim 14 words
The ECT system of claim 1 wherein said cover layer is a plastic film.
Claim 7
Dependent Claim 38 words
The ECT system of claim 1 and including an output wire connected to said ECT instrument means, and a second plug portion connected to said output wire and removably plugged into said plug portion of said connector-pad assembly.
Claim 8
Independent Claim 205 words
The method, in electroconvulsive therapy, using an ECT instrument, of stimulating the brain of a patient with electrical energy of high current density sufficient to induce seizure in the patient, including the steps of: forming a pad assembly by laminating together a conductive adhesive layer of a plastic conductive film and having a first and a second surface, a flexible conductive metal foil layer covering said second surface having spread across said foil a plurality of at least three separated strands of multi-strand wire, and an insulative layer covering the metal foil layer, said pad assembly having a cover sheet removably covering said first surface; joining the wire at its end opposite the foil layer to an electrical connector plug; arranging the patient for the therapy, removing the cover sheet from the adhesive layer; adhering the adhesive layer to the skin of the patient at the head, connecting the connector plug to the ECT instrument; treating the patient by applying electric current to the head of the patient from the ECT instrument through the adhesive layer, foil layer, multi-strand wire, and the connector plug; and after said treatment peeling the adhesive layer from the skin and disposing of the cover sheet and the pad assembly.
Claim 9
Independent Claim 205 words
The method, in electroconvulsive therapy, using an ECT instrument, of stimulating the brain of a patient with electrical energy of high current density sufficient to induce seizure in the patient, including the steps of: forming a pad assembly by laminating together a conductive adhesive layer of a plastic conductive film and having a first and a second surface, a flexible conductive metal foil layer covering said second surface having spread across said foil a plurality of at least three separated strands of multi-strand wire, and an insulative layer covering the metal foil layer, said pad assembly having a cover sheet removably covering said first surface; joining the wire at its end opposite the foil layer to an electrical connector plug; arranging the patient for the therapy, removing the cover sheet from the adhesive layer; adhering the adhesive layer to the skin of the patient at the head, connecting the connector plug to the ECT instrument; treating the patient by applying electric current to the head of the patient from the ECT instrument through the adhesive layer, foil layer, multi-strand wire, and the connector plug; and after said treatment peeling the adhesive layer from the skin and disposing of the cover sheet and the pad assembly.

References Cited (Backward Citations)

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US4243052A Cited
US4524087A Cited
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US4509535A Cited
US4709700A Cited
US4708149A Cited
EP0226568A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-10-02 1993-04-03 1993-10-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-10-02 1997-04-03 1997-10-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-10-02 2001-04-03 2001-10-03 $7700.00 Window Closed / Lapsed

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