Bileaflet mechanical heart valve having cropped slot pivot configuration and method for preventing blood stagnation therein
US5554186A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1994 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Dec 22, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/2403
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bileaflet mechanical cardiovascular valve comprising an annular valve body having a pair of occluder leaflets pivotally mounted therewithin. The occluder leaflets are pivotally mounted within the valve body by the snap-fitting of ear member which extend from the top and bottom ends of the occluder leaflets into corresponding cropped pivot slots formed within the annular valve body. Each cropped pivot slot comprises a spheroidal depression or recess having a first flat cropped edge and a second flat cropped edge. The ear members of the occluder leaflets are sized and configured relative to the cropped pivot slots to facilitate opening and closing of the occluder leaflets with minimal likelihood of hemolysis or thrombotic complications. Additionally disclosed is a specialized machine tool and method for machining the cropped pivot slots in the annular valve body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.