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USRE27849E
Expired / Lapsed
US
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Dynamic action valveless artifjcial heart utilizing dual fluid oscillator
Assignee: —
•
Filing: 1971-11-30
•
Granted: 1973-12-25
•
Expires: 1991-11-30
Abstract
Abstract AN ARTIFICIAL HEART INTENDED FOR SUPPLEMENTING OR (TEMPORARILY) REPLACING THE NATURAL HEART FOR CIRCULATING BLOOD THROUGH THE BODY. THE HEART RELIES ON THE DYNAMIC FLOW PROPERTIES OF THE BLOOD FOR ITS OPERATION, UTILIZING A UNIQUE DUAL FLUID OSCILLATOR WITH A COMMON DIAPHRAGM FOR PROVIDING THE PULSING ACTION TO A PAIR OF PUMPS THAT HAVE PRESSURE-VOLUME FLOW RELATIONSHIPS THAT SIMULATE THE NATURAL HEART.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:16
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/20; A61M60/247; A61M60/253; A61M60/268; A61M60/10; A61M60/122; A61M60/196; A61M60/40; A61M60/424; A61M60/438; A61M60/441; A61M60/80; A61M60/855; A61M60/869; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |