US 12,239,530 B2
Delivery catheter and delivery device for artificial valve
Xuwen Wu, Shanghai (CN); Jie Mei, Shanghai (CN); Baozhu Gui, Shanghai (CN); Guoming Chen, Shanghai (CN); and Yu Li, Shanghai (CN)
Assigned to SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO., LTD., Shanghai (CN)
Appl. No. 17/418,118
Filed by SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO., LTD., Shanghai (CN)
PCT Filed Dec. 20, 2019, PCT No. PCT/CN2019/127067
§ 371(c)(1), (2) Date Jun. 24, 2021,
PCT Pub. No. WO2020/135262, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 201811612802.2 (CN), filed on Dec. 27, 2018.
Prior Publication US 2022/0054265 A1, Feb. 24, 2022
Int. Cl. A61F 2/24 (2006.01)
CPC A61F 2/2436 (2013.01) [A61F 2/2466 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A prosthetic valve delivery catheter, comprising an outer sheath assembly and an inner sheath assembly, wherein: the outer sheath assembly comprises a capsule in which a prosthetic valve can be received and an outer sheath rotatably connected at one end to the capsule; the inner sheath assembly comprises an inner sheath and an anchor fixedly connected to the inner sheath; and the inner sheath assembly is arranged within a lumen of the outer sheath assembly, the capsule and the anchor forming a circumferentially indexed fit therebetween to allow them to rotate in concert with a circumferential rotation of the inner sheath,
wherein an outer wall of the anchor is provided with at least one embedded section, and wherein a friction generated between the embedded section and the capsule is greater than a friction generated between the prosthetic valve and the capsule, and
wherein the embedded section comprises a first strip and a second strip, and wherein each of a first spring and a second spring is connected between the first strip and the second strip.