The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2023
Filed:
Sep. 28, 2017
Shanghai Microport Cardioflow Medtech Co., Ltd., Shanghai, CN;
SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO., LTD., Shanghai, CN;
Abstract
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.