| 摘要 |
This invention relates to an implantable valvular prosthesis, comprising:
a. a stent body member (12) having lumenal and ablumenal surfaces thereof, a proximal anchoring section (22), a distal anchoring section (16), an intermediate annular section (20), and a central annular opening along a central longitudinal axis of the stent body member;
b. at least one biasing arm (24) projecting from the stent body member and into the central annular opening of the stent body member, the at least one biasing arm positioned between the intermediate annular section and the proximal anchoring section; and
c. at least one valve flap member (28) coupled to the at least one biasing arm and to at least a portion of the graft member, the biasing arm biasing the at least one valve flap member such that it assumes a position, under zero pressure differential across the prosthesis, which occludes the central annular opening of the stent body member; wherein the proximal anchoring section further comprises a plurality of stent struts (13) which project radially outward away from the central longitudinal axis of the stent body member. |
