US3817252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for transcutaneous stimulation
Assignee: Medtronic Inc
•
Filing: 1972-05-08
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Granted: 1974-06-18
•
Expires: 1992-05-08
Abstract
Abstract An electrode for transcutaneous stimulation capable of operating within an optimum power density range. The electrode is provided with a current diffusing screen which maintains a physiologically acceptable power density by increasing the effective stimulation surface area. In addition, a second screen is employed to increase the surface area of the input electrical connection to inhibit electrolysis as well as to lower the overall electrode impedance. The entire electrode structure is flexible so that it is easily conformable to any surface of the body.
Inventors
- 👤 D Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:23
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0472; A61N1/0492; A61N1/0408; A61N1/0452; A61N1/0456; A61N1/048
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
79 words
A body conformable electrode which comprises: electrical connection means including means for increasing the electrical contact area of said electrical connection means comprising a substantially flat electrical conductor of a size greater than said electrical connection means; skin interfaCe means; and electrically conductive flexible means positioned between said electrical connection means and said contact area increasing means for diffusing current flow from said electrical connection means with substantial uniformity across substantially the entire surface of said skin interface means.
Claim 2
Dependent Claim
79 words
A body conformable electrode which comprises: electrical connection means including means for increasing the electrical contact area of said electrical connection means comprising a substantially flat electrical conductor of a size greater than said electrical connection means; skin interfaCe means; and electrically conductive flexible means positioned between said electrical connection means and said contact area increasing means for diffusing current flow from said electrical connection means with substantial uniformity across substantially the entire surface of said skin interface means.
Claim 3
Dependent Claim
13 words
The electrode of claim 1 wherein said flexible means has an interrupted surface.
Claim 4
Dependent Claim
13 words
The electrode of claim 1 wherein said flexible means comprises a conductive screen.
Claim 5
Dependent Claim
13 words
The electrode of claim 1 wherein said flexible means comprises a metal screen.
Claim 6
Dependent Claim
28 words
The electrode of claim 1 wherein said skin interface means has an effective skin contact surface area of at least 3.5 cm2 but no greater than 50 cm2.
Claim 7
Dependent Claim
21 words
The electrode of claim 5 wherein said skin interface means has an effective skin contact surface area of approximately 12 cm2.
Claim 8
Dependent Claim
24 words
The electrode of claim 1 wherein said contact area increasing means is metal and has a surface area sufficient to inhibit electrolysis and polarization.
Claim 9
Dependent Claim
15 words
The electrode of claim 7 wherein said contact area increasing means comprises a metal screen.
Claim 10
Dependent Claim
13 words
The electrode of claim 8 wherein said flexible means has an interrupted surface.
Claim 11
Dependent Claim
13 words
The electrode of claim 8 wherein said flexible means comprises a conductive screen.
Claim 12
Dependent Claim
13 words
The electrode of claim 8 wherein said flexible means comprises a metal screen.
Claim 13
Dependent Claim
28 words
The electrode of claim 8 wherein said skin interface means has an effective skin contact surface area of at least 3.5 cm2 but no greater than 50 cm2.
Claim 14
Dependent Claim
21 words
The electrode of claim 12 wherein said skin interface means has an effective skin contact surface area of approximately 12 cm2.
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |