Four-leaflet stented mitral heart valve
US7455689B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2005 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Jun 8, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/2412
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prosthetic mitral heart valve having four separate flexible leaflets. The heart valve includes a support frame that may be non-circular, for example elliptical or “D-shaped”. The support frame may have an undulating outflow edge defined by four inflow cusps and four outflow commissures to which each of the flexible leaflets attaches. The support frame may comprise an undulating wireform and a surrounding stent defining a structure having four cantilevered posts projecting in the outflow direction to support the four leaflets. The heart valve is designed to be secured in the annulus and function as a standalone unit without papillary muscle connections to the leaflets. The four leaflets may be arranged in two opposed pairs, one pair being smaller than the other pair. The larger pair of leaflets may be identical, or differently sized. Existing sizes of heart valve leaflets may be utilized with the smaller leaflets being at least two leaflet sizes smaller than the larger leaflets in odd millimeter increments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.