Prosthetic heart valve
US5246453A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1992 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Jul 24, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7898
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Bi-leaflet and single occluder heart valves have improved pivot arrangements that create quick valve response to flow reversal and minimize impact. Valve members or occluders, which have curved inflow and outflow surfaces, are slidably and pivotally mounted in a heart valve body and can be aligned precisely parallel to blood flow in the open position. Lugs on the valve members engage surfaces on projections extending radially inward from flat wall sections in the valve body sidewall, and the shape and relationship of these interengaging surfaces provide prompt initial rotation, low wear and reduced impact upon closing. Laterally directed ears engage the valve body arcuate sidewall and assist in defining the path of closing movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.