Heart valve having tissue retention with anchors and an outer sheath
US6334873B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1998 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Sep 28, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2220/0075
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and a method for constructing a heart valve prepared from autologous tissue. Three tissue leaflets are held in place with tissue anchors on a tissue mounting frame having an annular base and a plurality of commissure posts extending from the base. An elastomeric sheath rests gently on the tissue leaflets to prevent the leaflets from coming off of the anchor hooks and encloses the leaflets to form valve cusps. The leaflets touch each other on a coaptation line with an angle of approximately 65° relative to the commissure post. The heart valves can be constructed intraoperatively in a short time, typically ten minutes. The low coaptation angle and the fact that the leaflets are held in place without being clamped between two unyielding members minimize stress on the tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.