Patent US3551913A successfully refreshed from Google Patents.
US3551913A
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US
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Heart valve prosthesis with guard structure
Assignee: Individual
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Filing: 1968-04-02
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Granted: 1971-01-05
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Expires: 1988-04-02
Abstract
Abstract A HEART VALVE PROSTHESIS WHICH INCLUDES A GUARD STRUCTURE FOR PREVENTING INTRUSION OF HEART MUSCLE OR OTHER FOREIGN TISSUE INTO THE PATH OF VALVE EXCURSION. THE GUARD IN ONE EMBODIMENT IS FORMED FROM A PAIR OF UPSTANDING STRUTS MOUNTED ABOUT THE VALVE BODY INTERMEDIATE THE LIMITS OF VALVE EXCURSION. IN ANOTHER EMBODIMENT THE GUARD IS FORED BY A PLASTIC FLANGE WHICH EXTENDS UPWARDLY AND OUTWARDLY FROM THE VALVE BODY AND SUBSTANTIALLY SURROUNDS THE PATH OF VALVE EXCURSION.
Inventors
- 👤 Donald P Shiley
- 👤 Jerome Harold Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:42
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2421; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49904
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |