BEIJING BALANCE MEDICAL TECHNOLOGY CO., LTD.;北京佰仁医疗科技股份有限公司
发明人:
JIN, Lei,金磊,FAN, Zhihao,范志豪,MU, Hong,慕宏
申请号：
CNCN2020/083086
公开号：
WO2020/207330A1
申请日:
2020.04.03
申请国别(地区):
CN
年份:
2020
代理人:
摘要：
A stent used for implanting a valve-in-valve. The stent is a metal tube lattice and is provided with four rows of circumferential support rods (2, 3, 4, 5) that extend horizontally and multiple columns of axial support rods (6, 7, 8) arranged between the circumferential support rods. The axial support rods (6, 7, 8) at different rows are arranged in a criss-crossing pattern, and the axial support rods and the horizontal support rods connected thereto form a criss-crossing honeycomb grid. The area of the honeycomb grid (11) at an inflow end (9) is generally equal to the area of the honeycomb grid (12) at the middle rows, and the area of the honeycomb grid (13) at an outflow end (10) is slightly larger than the area of the honeycomb grid at the other two rows. The present invention takes into account that the valve-in-valve being implanted must be implanted inside of a valve previously implanted by means of a surgery or inside of a valve stent previously implanted but has been damaged and takes into account the fit specificity of the valve-in-valve with the valve that has been damaged or lost the function thereof. Improvement is made to existing implantation valve stents and all grids in a stent are configured to near honeycomb structures. A stent of this type of structure has a certain degree of rigidity while allowing for rapid, synchronous unfolding speed and good fit, thereby achieving better usage.L'invention concerne une endoprothèse utilisée pour l'implantation d'une valve-in-valve. L'endoprothèse est un treillis tubulaire métallique pourvu de quatre rangées de tiges de support circonférentielles (2, 3, 4, 5) qui s'étendent horizontalement et de multiples colonnes de tiges de support axiales (6, 7, 8) disposées entre les tiges de support circonférentielles. Les tiges de support axiales (6, 7, 8) situées à différentes rangées sont disposées selon un motif croisé, et les tiges de support axiales et les tiges de support horizontales reliées à celles-ci forment une
