Patent US3824629A successfully refreshed from Google Patents.
US3824629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivoted discoid heart valve having a changing pivot axis
Assignee: Individual
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Filing: 1971-05-06
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Granted: 1974-07-23
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Expires: 1991-05-06
Abstract
Abstract A HEART VALVE PROSTHESIS HAVING A DISCOID POPPET MOUNTED THEREIN FOR PIVOTAL MOVEMENT BETWEEN A CLOSED AND OPENED POSITION. THE POPPET IS SUPPORTED FOR MOVEMENT BY OPPOSED, SPACED SUPORTED STRUTS WICH FORM AN ECCENTRIC PIVOT POINT FOR OPENING OF THE VALVE AND A CHANGING PIVOT POINT FOR CLOSING OF THE VALVE. THE SPACING BETWEEN THE STRUTS IS SUFFICIENT TO ENABLE ROTATIONAL MOVEMENT OF THE POPPET DURING OPERATION.
Inventors
- 👤 D Shiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:50
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2403; A61F2/2406; A61F2/2409; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7903
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |