US3760812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable spiral wound stimulation electrodes
Assignee: University of Minnesota Twin Cities
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Filing: 1971-03-19
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Granted: 1973-09-25
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Expires: 1991-03-19
Abstract
Abstract Electrical stimulation electrodes for implantation within a living body for transmission of stimuli to excitable neural or contractile cells. The electrodes are characterized by flexibility to permit following of contour variations and maintenance of electrical contact with the stimulation region. The electrodes include a pair of parallel spaced apart helically wound conductors maintained in this configuration. When the electrode is implanted, undesired excitation of nearby structures can be avoided.
Inventors
- 👤 G Timm
- 👤 W Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:51
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
126 words
An electrical stimulation electrode for implantation in a living body, said electrode consisting essentially of: A. a pair of elongated parallel spaced apart helically wound electrical conductors, said conductors being conductive filaments, B. means for supporting and maintaining said conductors in parallel spaced apart helically wound configuration, said means comprising: 1. a pair of elongated parallel spaced apart helically wound insulative spacer strands, said spacer strands being alternated with said conductors and wound in the same direction, and 2. two pairs of elongated parallel spaced apart helically wound insulative supporting strands, said supporting strands being wound in the opposite direction from said conductors and spacer strands and interwoven therewith, and C. insulated conductor means for connecting said helically wound conductors to a source of electrical stimuli.
Claim 2
Dependent Claim
126 words
An electrical stimulation electrode for implantation in a living body, said electrode consisting essentially of: A. a pair of elongated parallel spaced apart helically wound electrical conductors, said conductors being conductive filaments, B. means for supporting and maintaining said conductors in parallel spaced apart helically wound configuration, said means comprising: 1. a pair of elongated parallel spaced apart helically wound insulative spacer strands, said spacer strands being alternated with said conductors and wound in the same direction, and 2. two pairs of elongated parallel spaced apart helically wound insulative supporting strands, said supporting strands being wound in the opposite direction from said conductors and spacer strands and interwoven therewith, and C. insulated conductor means for connecting said helically wound conductors to a source of electrical stimuli.
Claim 3
Dependent Claim
47 words
two pairs of elongated parallel spaced apart helically wound insulative supporting strands, said supporting strands being wound in the opposite direction from said conductors and spacer strands and interwoven therewith, and C. insulated conductor means for connecting said helically wound conductors to a source of electrical stimuli.
Claim 4
Dependent Claim
47 words
two pairs of elongated parallel spaced apart helically wound insulative supporting strands, said supporting strands being wound in the opposite direction from said conductors and spacer strands and interwoven therewith, and C. insulated conductor means for connecting said helically wound conductors to a source of electrical stimuli.
Claim 5
Dependent Claim
28 words
An electrical stimulation electrode according to claim 1 further characterized in that said conductors are spaced apart a distance about equal to the diameter of the helical configuration.
Claim 6
Dependent Claim
31 words
An electrical stimulation electrode according to claim 2 further characterized in that the spacing between said conductors and the diameter of said helaical configuration are between about 1 and 3 mm.
Claim 7
Dependent Claim
19 words
An electrical stimulation electrode according to claim 1 further characterized in that said insulative strands are formed from nylon.
Claim 8
Dependent Claim
19 words
An electrical stimulation electrode according to claim 1 further characterized in that said insulative strands are formed from silk.
Claim 9
Dependent Claim
19 words
An electrical stimulation electrode according to claim 1 further characterized in that said insulative strands are formed from polyester.
Claim 10
Dependent Claim
20 words
An electrical stimulation electrode according to claim 1 further characterized in that said conductors are formed from stainless steel wire.
Claim 11
Dependent Claim
19 words
An electrical stimulation electrode according to claim 1 further characterized in that said conductors are formed from platinum wire.
Claim 12
Dependent Claim
20 words
An electrical stimulation electrode according to claim 1 further characterized in that said conductors are formed from platinum alloy wire.
Claim 13
Dependent Claim
21 words
An electrical stimulation electrode according to claim 1 further characterized in that said conductors are formed from carbon impregnated polyester filament.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |