Patent US4476868A successfully refreshed from Google Patents.
US4476868A
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Body stimulator output circuit
Assignee: MED REL Inc
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Filing: 1980-09-08
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Granted: 1984-10-16
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Expires: 2000-09-08
Abstract
Abstract A body implantable stimulator having an output capacitance. Provision is made to increase the charge rate of the capacitance for a predetermined period following an output stimulation signal.
Inventors
- 👤 David L. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:42
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/365
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
A body implantable stimulator of the type having output means adapted for connection to the body for the delivery of stimulation signals thereto comprising means for storing stimulation energy connected to said output means, means controlling the discharge of said energy storing means, means forming a first charge path for said energy storing means and means forming a second, selectively conductive, charge path for said energy storing means, said second charge path having a lower impedance than said first charge path and including means for selectively rendering said second charge path conductive independently of the charge of said stimulation energy storing means and said energy storing means discharge controlling means.
Claim 2
Dependent Claim
110 words
A body implantable stimulator of the type having output means adapted for connection to the body for the delivery of stimulation signals thereto comprising means for storing stimulation energy connected to said output means, means controlling the discharge of said energy storing means, means forming a first charge path for said energy storing means and means forming a second, selectively conductive, charge path for said energy storing means, said second charge path having a lower impedance than said first charge path and including means for selectively rendering said second charge path conductive independently of the charge of said stimulation energy storing means and said energy storing means discharge controlling means.
Claim 3
Dependent Claim
13 words
The stimulator of claim 1 wherein said second charge path comprises shunt means.
Claim 4
Dependent Claim
13 words
The stimulator of claim 2 wherein said shunt means comprises electronic switch means.
Claim 5
Dependent Claim
25 words
The stimulator of claim 1 wherein said first charge path comprises resistance means, said second charge path comprising means selectively shunted across said resistance means.
Claim 6
Dependent Claim
18 words
The stimulator of claim 4 wherein said means selectively shunted across said resistance means comprises electronic switch means.
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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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |