Method of making an artificial heart valve stent
US5469868A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1994 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Aug 4, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/901
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A novel, long lasting prosthetic heart valve compatible with implantation in a human natural heart valve annulus. The prosthetic heart valve comprises a trileaflet heart valve apparatus which in form, dimension, and function resembles a human trileaflet heart valve, but which is formed of synthetic resinous material. A seamless supporting frame capable of annular deformation and limited perimetric expansion during each heartbeat is totally enveloped in an essentially biologically inert cylindrical cover to form a cusp supporting stent for the valve leaflet apparatus. The free top and bottom edges of the cylindrical cover are disposed on the exterior of the stent and everted outward to provide at least one sewing ring. Valve embodiments comprise aortic and mitral implantable valves. For the aortic implant, the outwardly everting free sewing ring forming edges are separated by circumferentially disposed compressible and expandable material which provides a pliable, compliant interface between the valve and the natural valve annulus at the implanting site. In one embodiment, the synthetic trileaflet heart valve apparatus is formed by a unicast mold. In another embodiment, the heart va…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.