US 12,478,471 B2
Medical implant conveying device
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. 17/634,386
Filed by SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO., LTD., Shanghai (CN)
PCT Filed Aug. 24, 2020, PCT No. PCT/CN2020/110893
§ 371(c)(1), (2) Date Feb. 10, 2022,
PCT Pub. No. WO2021/043022, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 201910829483.9 (CN), filed on Sep. 3, 2019.
Prior Publication US 2022/0323216 A1, Oct. 13, 2022
Int. Cl. A61F 2/24 (2006.01); A61F 2/95 (2013.01); A61F 2/962 (2013.01); A61F 2/966 (2013.01)
CPC A61F 2/2436 (2013.01) [A61F 2/9517 (2020.05); A61F 2/962 (2013.01); A61F 2/966 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A delivery device for medical implants, wherein the delivery device has a detachable structure and includes a handle and a catheter assembly that are separated from each other, and the handle and the catheter assembly are connected by a transmission shaft,
wherein the catheter assembly comprises an inner tube assembly and an outer tube assembly sleeved over the inner tube assembly, and wherein the handle is configured to drive the transmission shaft to rotate to axially move the outer tube assembly relative to the inner tube assembly,
wherein the catheter assembly further comprises a transmission assembly, the transmission assembly comprising a screw rod and a screw nut, wherein the screw rod is engaged with the screw nut that is fixedly connected to the outer tube assembly; when the transmission shaft is connected to the catheter assembly, the transmission shaft is connected to the screw rod so that the screw nut and the outer tube assembly are forced to move axially resulting from rotation of the screw rod due to rotation of the transmission shaft, and
wherein the catheter assembly further comprises a housing, and the transmission assembly further comprises a first bearing, and wherein an outer ring of the first bearing is embedded in and fixedly connected to a proximal end of the housing, and an inner ring of the first bearing is sleeved over and fixedly connected to a proximal end of the screw rod.