Suture ring for heart valve prostheses
Patent 5163954 Issued on November 17, 1992. Estimated Expiration Date: 
February 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.
February 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 3491376 3579642 3689942 Heart valve stent and process for preparing a stented heart valve prosthesis Biocompatible material comprising a base polymer bulk graft polymerized with an ethylenically unsaturated carboxylic acid Suture rings for heart valves Patent #: 4535483 InventorsAssigneeApplicationNo. 658535 filed on 02/21/1991US Classes:623/2.41, Sewing ring623/900STENT FOR HEART VALVEExaminersPrimary: Pellegrino, Stephen C.Assistant: Jackson, Gary Attorney, Agent or FirmInternational ClassA61F 002/24Foreign Application Priority Data1990-02-21 ITAbstractIn a suture ring for heart valve prostheses, the internal surface of the ring which is intended to be exposed to the blood flow is covered by a substantially water-repellent material so that it absorbs substantially no blood and has little haemolytic effect. The outer surface of the ring which is intended to be exposed to the tissue to which the prosthesis is sutured is covered by a substantially hydrophilic, porous material so as to encourage the colonization of the ring by the tissue.Field of SearchSTENT FOR HEART VALVE | |
