Shanghai Microport Cardioflow Medtech Co., Ltd.

Shihong Liu

Yu Meng Li

Ming Liu

Guoming Chen

Baozhu Gui

Yu Li

Longfei Li

A valve prosthesis (), comprising a stent (), a leaflet (), and a skirt (); the stent () comprises an inflow end, an outflow end, and a plurality of wavy segments axially connected; the wavy segments comprise a plurality of reticular structure units disposed circumferentially; the leaflet () and the skirt () are fixed on the stent () respectively; the upper portion of the skirt () is provided with indentations (); the skirt () is fixed with the leaflet () by means of the indentations (); the skirt () further comprises first protrusion portions () extending toward the direction of the outflow end of the stent; one ends of the first protrusion portions () are connected with the indentations (), and the other ends of the first protrusion portions are fixed to the stent (); by such a way, the connection strength of the skirt () and the stent () is enhanced; and besides, when the valve prosthesis () is implanted at a lower position, perivalvular leakage preventing height can be increased by means of the first protrusion portions (), thereby avoiding the leakage of a part of blood from the stent () and further improving the perivalvular leakage preventing effect.

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Shanghai, China

Shihong Liu