| 摘要 |
A heart valve prosthesis, the inner surface of the valve ring of which continuously narrows in flow direction, is provided with a special manner of supporting the closing members. The valve ring is provided with sector-shaped recesses into which a respective oblong journal pin of the closing member extends. In the opening and closing movement, the journal pin sweeps the bottom of the recess like a windshield wiper. Thus, a formation of thrombi in the vicinity of the bearings is prevented.
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