Biomedical electrode with lossy dielectric properties

Details Biomedical electrode with lossy dielectric properties Biomedical electrode with lossy dielectric properties

1996-04-04

1998-11-17

Cohen, Lee S.

Surgery

Instruments

Electrical application

606 35, 607142, 607149, 607152, 29829, A61B 1739, A61N 104

Patent

active

058369422

ABSTRACT:
A biomedical electrode having an electrically non-conductive backing and at least one, and preferably two, conductive plates contacting the electrically non-conductive backing. A field of lossy dielectric material is used between the electrically conductive plate(s) and the surface of the electrode applied to a patient. A field of conductive adhesive contacts both the conductive plate(s) and the field of lossy dielectric material. The electrode does not operate purely capacitively, nor does it operate purely resistively. Hot spots due to "edge effect" are substantially reduced. At the same time, the biomedical electrode functioning as a electrosurgical dispersive electrode has an impedance within the range expected by the contact monitoring safety circuits provided with many current electrosurgical generators. The biomedical electrode also can function as a cardiac stimulating electrode, such as a defibrillation, cardioversion, or pacing electrode. A method of controlling the lossy dielectric properties of the biomedical electrode is also disclosed.

REFERENCES:
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patent: 4893626 (1990-01-01), Henley et al.
patent: 5178957 (1993-01-01), Kolpe et al.
patent: 5205297 (1993-04-01), Montecalvo et al.
patent: 5211174 (1993-05-01), Imran
patent: 5402884 (1995-04-01), Gilman et al.
patent: 5456710 (1995-10-01), Gadsby
Derwent Abstract for PCT Publication WO 87/05814 (1987).
Derwent Abstract for DE 40 35 247 A1 (1992).

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