Heart valve assembly and method of implanting in the body
Abstract
Abstract A CHECK VALVE FOR USE IN A HUMAN HEART OR THE LIKE IN WHICH THE BODY PORTION CONTAINS CHECK VALVE MEANS ON THE INSIDE THEREOF AND IN WHICH THE OUTER WALL PORTIONS CONTAIN A GROOVE AROUND THE PERIPHERY THEROF TO RECEIVE A FASTENER IN THE FORM OF A SNAP RING OR THE LIKE. A METHOD IS DESCRIBED IN WHICH A MEMBRANE IS OPENED, A STIFF BUT RESILIENT FASTENER SUCH AS A SNAP RING IS SEWN IN PLACE THEREIN, CLOSELY ADJACENT THE EDGES OF THE MEMBRANE WHICH DEFINE THE OPENING THEREIN, AND A CHECK VALVE SUCH AS THAT DESCRIBED IS NAPPED INTO PLACE IN THE OPENING IN THE MEM- BRANE AS THE RING IS OPENED AND CLOSED OVER THE VALVE, IN REGISTRY WITH THE GROOVE. PREFERABLY, THE VALVE IS A PLASTIC MATERIAL AND THE RING IS STAINLESS STELL OR STILL SILICONE RUBBER. THE VALVE AND METHOD MAKE IT POSSIBLE TO IMMOBILIZE THROMBOGENIC MATERIALS RESULTING FROM THE INCLUSION OF A HEART VALVE OR THE LIKE IN THE BODY.
Inventors
- 👤 Bart T Heffernan
- 👤 Efrem M Ostrowsky
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |