POSITIONING PIECE, VALVE DELIVERY SYSTEM, AND BALLOON-EXPANDABLE INTERVENTIONAL INSTRUMENT

WIPO Patent Application WO/2024/021961

A1

The present invention relates to a positioning piece, a valve delivery system, and a balloon-expandable interventional instrument. The positioning piece comprises a fixing part and a limiting part; the fixing part is connected to the limiting part; and the limiting part has a first working state and a second working state. The limiting part is tubular and comprises retaining parts and connecting parts which are alternately arranged in the circumferential direction. In the first working state, the limiting part is folded, the retaining part is used for positioning an artificial implant, and the connecting part is contracted and/or folded; and in the second working state, the limiting part is unfolded, and the connecting part is stretched and/or unfolded in the circumferential direction, so that the circumferential size of the connecting part in the second working state is larger than the size of the connecting part in the circumferential direction in the first working state. According to the present invention, the shape of the retracted balloon is limited by means of adopting the foldable limiting part, so that the retracted balloon does not flatten out and cause scratches to the blood vessels of the human body.

JIANG JIAQIANG (CN)
ZHAN HANGMIN (CN)
DU TIANYI (CN)
YU QIFENG (CN)

PCT/CN2023/102722

February 01, 2024

June 27, 2023

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SHANGHAI NEWMED MEDICAL CO LTD (CN)

A61M25/10; A61F2/24

CN115778633A	2023-03-14
CN219207508U	2023-06-20
CN202740158U	2013-02-20
CN112274762A	2021-01-29
US20040093005A1	2004-05-13
JP2014140462A	2014-08-07

SHENZHEN J & Q INTELLECTUAL PROPERTY CO., LTD. (CN)

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