Title:
VALVE STENT AND VALVE PROSTHESIS
Document Type and Number:
WIPO Patent Application WO/2023/206710
Kind Code:
A1
Abstract:
A valve stent and a valve prosthesis. The valve stent comprises: a stent body (10) and a barb structure (20). The stent body (10), in its own circumferential direction, is at least divided into an anterior leaflet region (11), a posterior leaflet region (12), and valve leaflet connection regions (13, 14). The barb structure (20) comprises at least two rows of barbs (21). The barbs (21) are arranged in the circumferential direction of the stent body (10). The density of the barbs (21) arranged in the valve leaflet connection regions (13, 14) is less than the density of the barbs (21) in the anterior leaflet region (11) and is not greater than the density of the barbs (21) in the posterior leaflet region (12). In this way, the barbs (21) can conform to the physiologically anatomical region of native valve leaflets, so that the degree of damage to the native valve leaflets and surrounding tissues thereof caused by the barbs (21) is reduced, which solves the problem of serious damage to the native valve leaflets and the surrounding tissues thereof caused by the barbs (21) after the valve stent is implanted.
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Inventors:
ZHANG JING (CN)
LIU SHIHONG (CN)
QIU YAO (CN)
CHEN GUOMING (CN)
LIU SHIHONG (CN)
QIU YAO (CN)
CHEN GUOMING (CN)
Application Number:
PCT/CN2022/096676
Publication Date:
November 02, 2023
Filing Date:
June 01, 2022
Export Citation:
Assignee:
SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO LTD (CN)
International Classes:
A61F2/24
Domestic Patent References:
| WO2022066961A1 | 2022-03-31 |
Foreign References:
| CN212853731U | 2021-04-02 | |||
| CN111714250A | 2020-09-29 | |||
| CN209154109U | 2019-07-26 | |||
| CN104188737A | 2014-12-10 | |||
| CN109498213A | 2019-03-22 | |||
| CN110575286A | 2019-12-17 | |||
| US20120053680A1 | 2012-03-01 |
Attorney, Agent or Firm:
SHANGHAI SAVVY IP AGENCY CO., LTD. (CN)
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