Combined prosthetic aortic heart valve and vascular graft
Patent 5123919 Issued on June 23, 1992. Estimated Expiration Date: 
November 21, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 21, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re31040 2912999 3312237 Prosthetic blood vessel Prosthetic device couplings Artificial heart Mechanical heart valve prosthesis Mechanical heart valve with compliant sewing ring Suture rings for heart valves and method of securing suture rings to heart valves Patent #: 5071431 InventorsAssigneeApplicationNo. 795497 filed on 11/21/1991US Classes:623/1.26, Heart valve623/2.1, HEART VALVE623/2.4Having means for fixedly securing annular support member to sewing ringExaminersPrimary: Isabella, David J.Assistant: Gualtieri, Gina M. Attorney, Agent or FirmInternational ClassA61F 002/24AbstractA combined mechanical heart valve and vascular graft having a shortened transition area between the valve and the graft. The mechanical valve comprises a rigid circular annulus supporting internal leaflets. A stiffening ring surrounds the annulus and provides support for a sewing ring to attach the valve to the heart. The stiffening ring also captures a proximal end of the vascular graft between the stiffening ring and the annulus. | |
