| 摘要 |
<p>PCT No. PCT/SU88/00137 Sec. 371 Date Feb. 24, 1989 Sec. 102(e) Date Feb. 24, 1989 PCT Filed Jun. 23, 1988 PCT Pub. No. WO88/10105 PCT Pub. Date Dec. 29, 1988.A heart valve prosthesis has a valve ring (1) having an opening (2) for the flow of blood. A valve poppet (3) is mounted in the opening (2) for closing and opening it. An annular curvilinear depression (9) is provided on an upper or distal side (6) of the poppet (3) for reducing the poppet mass. The poppet (4) is floatingly mounted between support structures (4, 5).</p> |
