US5797902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biomedical electrode providing early detection of accidental detachment
Assignee: 3M Co
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Filing: 1996-05-10
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Granted: 1998-08-25
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Expires: 2016-05-10
Abstract
Abstract A biomedical electrode is disclosed, having a geometry of conductive plates along a longitudinal axis of the electrode such that interior edge(s) of the plate(s) adjoining the axis are curvilinear or otherwise non-parallel to the axis. The geometry permits the electrode to register an earlier detection of a CQM alarm condition if a portion of the electrode unpeels from contact with the body of a mammalian patient before the extent of unpeeling would otherwise cause a CQM alarm condition established by and issued from an electrosurgical generator.
Inventors
- 👤 Samuel G. Netherly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:25
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/16; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
130 words
A biomedical electrode, comprising: an electrically non-conductive backing; two conductive plates required for Contact Quality Monitoring circuitry separated from each other along a longitudinal axis of the backing, each conductive plate contacting the electrically non-conductive backing, and each conductive dilate having a curvilinear interior edge adjoining the longitudinal axis which edge is also symmetrical about an axis orthogonal to the longitudinal exit; and optionally, a field of conductive adhesive in contact with both the conductive plates, wherein the minimum distance separating the conductive plates along the longitudinal axis at a first point distal from an outside edge of the biomedical electrode intersecting the longitudinal axis is substantially greater than the minimum distance separating the conductive plates at a second point more proximal to the outside edge of the biomedical electrode.
Claim 2
Dependent Claim
130 words
A biomedical electrode, comprising: an electrically non-conductive backing; two conductive plates required for Contact Quality Monitoring circuitry separated from each other along a longitudinal axis of the backing, each conductive plate contacting the electrically non-conductive backing, and each conductive dilate having a curvilinear interior edge adjoining the longitudinal axis which edge is also symmetrical about an axis orthogonal to the longitudinal exit; and optionally, a field of conductive adhesive in contact with both the conductive plates, wherein the minimum distance separating the conductive plates along the longitudinal axis at a first point distal from an outside edge of the biomedical electrode intersecting the longitudinal axis is substantially greater than the minimum distance separating the conductive plates at a second point more proximal to the outside edge of the biomedical electrode.
Claim 3
Dependent Claim
33 words
The biomedical electrode according to claim 1, further comprising a field of lossy dielectric material between the conductor plates and a surface of the electrode that can contact a body of a patient.
Claim 4
Dependent Claim
70 words
The biomedical electrode according to claim 1, wherein the conductive plates have a body contacting portion and wherein the ratio between the minimum distance separating the conductive plates along the longitudinal axis at a point away from the outside edge of the body contact portion and the minimum distance separating the conductive plates at a point near the outside edge of the body contact portion is greater than about 2:1.
Claim 5
Dependent Claim
57 words
The biomedical electrode, according to claim 3, wherein the ratio between the minimum distance separating the conductive plates at a point away from the outside edge of the body contact portion and the minimum distance separating the conductive plates at a point near the outside edge of the body contact portion is between about 3:1 and 15:1.
Claim 6
Dependent Claim
57 words
The biomedical electrode, according to claim 4, wherein the ratio between the minimum distance separating the conductive plates at a point away from the outside edge of the body contact portion and the minimum distance separating the conductive plates at a point near the outside edge of the body contact portion is between about 4:1 and 10:1.
Claim 7
Dependent Claim
157 words
An electrosurgical CQM circuit, comprising: (a) an electrosurgical generator having CQM circuit; (b) a biomedical electrode; and (c) electrical connections between the generator and the electrode, wherein the biomedical electrode, comprises an electrically nonconductive backing; two conductive plates required for Contact Quality Monitoring circuitry separated from each other along a longitudinal axis of the backing, each conductive plate contacting the electrically non-conductive backing and each conductive plate having a curvilinear interior edge adjoining the longitudinal axis which edgei s also symmetrical about an axis orthogonal to the longitudinal axis; and optionally, a field of conductive adhesive in contact with both the conductive plates, wherein the minimum distance separating the conductive plates along the longitudinal axis at a first point distal from an outside edge of the biomedical electrode intersecting the longitudinal axis is substantially greater than the minimum distance separating the conductive plates at a second point more proximal to the outside edge of the biomedical electrode.
Claim 8
Dependent Claim
157 words
An electrosurgical CQM circuit, comprising: (a) an electrosurgical generator having CQM circuit; (b) a biomedical electrode; and (c) electrical connections between the generator and the electrode, wherein the biomedical electrode, comprises an electrically nonconductive backing; two conductive plates required for Contact Quality Monitoring circuitry separated from each other along a longitudinal axis of the backing, each conductive plate contacting the electrically non-conductive backing and each conductive plate having a curvilinear interior edge adjoining the longitudinal axis which edgei s also symmetrical about an axis orthogonal to the longitudinal axis; and optionally, a field of conductive adhesive in contact with both the conductive plates, wherein the minimum distance separating the conductive plates along the longitudinal axis at a first point distal from an outside edge of the biomedical electrode intersecting the longitudinal axis is substantially greater than the minimum distance separating the conductive plates at a second point more proximal to the outside edge of the biomedical electrode.
Claim 9
Dependent Claim
165 words
An electrosurgical system, comprising: (a) an electrosurgical generator having CQM circuitry; (b) a biomedical electrode; (c) an electrosurgical pencil electrically connected to the generator; and (d) electrical connections between the generator and the electrode, wherein the biomedical electrodes comprises an electrically non-conductive backing; two conductive plates required for Contact Quality Monitoring circuitry separated from each other along a longitudinal axis of the backing, each conductive plate contacting the electrically non-conductive backing, and each conductive plate having a curvilinear interior edge adjoining the longitudinal axis which edge is also symmetrical about an axis orthogonal to the longitude axis; and optionally, a field of conductive adhesive in contact with both the conductive plates, wherein the minimum distance separating the conductive plates along the longitudinal axis at a first point distal from an outside edge of the biomedical electrode intersecting the longitudinal axis is substantially greater than the minimum distance separating the conductive plates at a second point more proximal to the outside edge of the biomedical electrode.
Claim 10
Dependent Claim
165 words
An electrosurgical system, comprising: (a) an electrosurgical generator having CQM circuitry; (b) a biomedical electrode; (c) an electrosurgical pencil electrically connected to the generator; and (d) electrical connections between the generator and the electrode, wherein the biomedical electrodes comprises an electrically non-conductive backing; two conductive plates required for Contact Quality Monitoring circuitry separated from each other along a longitudinal axis of the backing, each conductive plate contacting the electrically non-conductive backing, and each conductive plate having a curvilinear interior edge adjoining the longitudinal axis which edge is also symmetrical about an axis orthogonal to the longitude axis; and optionally, a field of conductive adhesive in contact with both the conductive plates, wherein the minimum distance separating the conductive plates along the longitudinal axis at a first point distal from an outside edge of the biomedical electrode intersecting the longitudinal axis is substantially greater than the minimum distance separating the conductive plates at a second point more proximal to the outside edge of the biomedical electrode.
Claim 11
Independent Claim
185 words
A method of early detection of an electrosurgical CQM alarm condition, comprising the steps of: (a) contacting a biomedical electrode to the body of a mammalian patient; (b) sounding an alarm when a portion of the biomedical electrode separates from contact with the body of the patient, wherein the portion of the biomedical electrode separated lies along a longitudinal axis of the biomedical electrode, wherein the biomedical electrode comprises an electrically non-conductive backing and two conductive plates; wherein the two conductive plates require for Contact Quality Monitoring circuitry are separated from each other alone the longitudinal axis, each conductive plate contacting the electrically non-conductive backing, and each conductive plate having a curvilinear interior edge adjoining longitudinal axis which edge is also symmetrical about an axis orthogonal to the longitudinal axis and wherein a minimum distance separating the conductive plates along the longitudinal axis at a first point distal from an outside edge of the biomedical electrode intersecting the longitudinal axis is substantially greater than the minimum distance separating the conductive plates at a second point more proximal to the outside edge of the biomedical electrode.
Claim 12
Independent Claim
185 words
A method of early detection of an electrosurgical CQM alarm condition, comprising the steps of: (a) contacting a biomedical electrode to the body of a mammalian patient; (b) sounding an alarm when a portion of the biomedical electrode separates from contact with the body of the patient, wherein the portion of the biomedical electrode separated lies along a longitudinal axis of the biomedical electrode, wherein the biomedical electrode comprises an electrically non-conductive backing and two conductive plates; wherein the two conductive plates require for Contact Quality Monitoring circuitry are separated from each other alone the longitudinal axis, each conductive plate contacting the electrically non-conductive backing, and each conductive plate having a curvilinear interior edge adjoining longitudinal axis which edge is also symmetrical about an axis orthogonal to the longitudinal axis and wherein a minimum distance separating the conductive plates along the longitudinal axis at a first point distal from an outside edge of the biomedical electrode intersecting the longitudinal axis is substantially greater than the minimum distance separating the conductive plates at a second point more proximal to the outside edge of the biomedical electrode.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-24 | 2002-02-23 | 2002-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-24 | 2006-02-23 | 2006-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-24 | 2010-02-23 | 2010-08-25 | $7700.00 | Window Closed / Lapsed |