US 12,274,614 B2
Valve stent and prosthetic valve apparatus
Gaoxu Dai, Shanghai (CN)
Assigned to Shanghai Healing Medical Devices, Co., Ltd., Shanghai (CN)
Appl. No. 17/266,261
Filed by Shanghai Healing Medical Devices, Co., Ltd., Shanghai (CN)
PCT Filed Dec. 24, 2019, PCT No. PCT/CN2019/127751
§ 371(c)(1), (2) Date Feb. 5, 2021,
PCT Pub. No. WO2021/036125, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 201910809227.3 (CN), filed on Aug. 29, 2019.
Prior Publication US 2022/0008198 A1, Jan. 13, 2022
Int. Cl. A61F 2/24 (2006.01)
CPC A61F 2/2418 (2013.01) [A61F 2220/0025 (2013.01); A61F 2220/0033 (2013.01); A61F 2220/0041 (2013.01); A61F 2220/0075 (2013.01); A61F 2250/0096 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for operating a prosthetic valve apparatus, wherein the prosthetic valve apparatus comprises a valve stent and a prosthetic valve leaflet (9), the valve stent comprises a stent body (1), having a ring structure that can be radially propped open, and configured to accommodate the prosthetic valve leaflet (9) in an interior thereof; a positioning ring (6), having a radially compressible ring structure, and configured to accommodate the stent body (1) in an interior thereof; and an elastic connection wire (5), with one end fixedly connected to an upper end of the positioning ring (6), and with the other end fixedly connected to a middle or lower part of the stent body (1); wherein the stent body (1) further comprises a first slot (4); and the valve stent further comprises a fastener (8), and a snap-fit zone (401) for connecting the fastener (8) is provided on outer flanks on each of a first lateral side and a second lateral side along a longitudinal direction of the first slot (4) in the stent body (1); wherein the method comprises: (a) arranging the positioning ring (6) in a compressed state in series with the stent body (1) sequentially along an axis thereof during delivery of the prosthetic valve apparatus; (b) when the positioning ring (6) reaches a predetermined implanting position, releasing the prosthetic valve apparatus to make the positioning ring (6) automatically expand from the compressed state to a propped open state by elastic deformation and at the same time make the positioning ring (6) become automatically coaxially sleeved on the stent body (1) by traction of the elastic connection wire (5), so as to automatically realize simultaneous positioning of the positioning ring (6) and the stent body (1) according to the location of the positioning ring (6), wherein,
the connection wire (5) is multifilament with a round or flat cross section, the connection wire (5) has a double-filament structure bound at one end thereof and separated at the other end thereof,
a ball is provided at a top of the elastic connection wire (5), and the ball is configured to abut against a bent part of the first slot (4) of the stent body (1) when the elastic connection wire (5) is inserted into the first slot (4).