Fabrics for heart valve and vascular prostheses and methods of fabricating same
US4191218A · kind A · utility
64Cited by
9References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 28, 1978 |
| Grant date | Mar 4, 1980 |
| Priority date | — |
| Expiry date | Apr 28, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2509/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Prostheses for inadequate or diseased heart valves and blood vessels, formed of fabrics comprising multifilament synthetic yarns. For a heart valve the fabric is supported on a three-lobed frame. During manufacture, the fabric is subjected to a plural step compressive shrinking and crimping process to impart nonisotropic elastic compliance approximating the natural mechanical properties. The resulting composite structures are free of thrombogenic complications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.