Patent US3659615A successfully refreshed from Google Patents.
US3659615A
Expired / Lapsed
US
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Encapsulated non-permeable piezoelectric powered pacesetter
Assignee: CARL C ENGER
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Filing: 1970-06-08
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Granted: 1972-05-02
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Expires: 1990-06-08
Abstract
Abstract An encapsulated non-permeable piezoelectric self-powered pacesetter for implantation in an in vivo, or living, system in which the pacesetter is sealed and enclosed in an envelope formed of medical grade silicone rubber and preferably natural or synthetic animal, plant or insect wax, in which a piezoelectric poly-crystalline ceramic is completely embedded, enclosed or housed to function as a mechanical to electrical energy converter, when implanted near moving muscle in a living system, and without connection with a separate source of electrical energy either within or without the living system.
Inventors
- 👤 Carl C Enger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:15
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61N1/378; A61N1/3785
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
34 words
The invention as defined in claim 1 in which said envelope comprises a natural wax inner enclosure for the generator and the transdUcer and a medical grade silicone rubber, outer, living tissue compatible envelope.
Claim 2
Dependent Claim
35 words
The invention defined in claim 1 in which the material forming the capsule consists of a natural wax and medical grade silicone rubber intimately and uniformly dispersed throughout the total mass to form an envelope.
Claim 3
Dependent Claim
98 words
An encapsulated pacesetter comprising an elongate capsule enclosing a piezoelectric generator unit at one end of the capsule, a transducer unit enclosed in the capsule and extending in a direction from said capsule end enclosing said generator to provide a flat flexing portion responsive to movement of organic muscle tissue in which the device is implanted in close proximity thereto, input electrodes within the capsule electrically connecting said transducer with said generator unit and generator output electrodes for implantation in the muscle tissue, said capsule comprising a mass consisting of medical grade silicone rubber and a natural wax.
Claim 4
Dependent Claim
39 words
The invention of claim 4 in which said encapsulation consists of an inner core of natural wax enclosing said generator, transducer and input electrodes, and an outer relatively thin interface of medical grade silicone rubber completely enclosing the core.
References Cited (Backward Citations)
US3486506A
Cited
US3456134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |