US 12,403,006 B2
Delivery device
Xuwen Wu, Shanghai (CN); Baozhu Gui, Shanghai (CN); Jie Mei, Shanghai (CN); Guoming Chen, Shanghai (CN); and Yu Li, Shanghai (CN)
Assigned to SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO., LTD., Shanghai (CN)
Appl. No. 17/257,139
Filed by SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO., LTD., Shanghai (CN)
PCT Filed Aug. 30, 2019, PCT No. PCT/CN2019/103838
§ 371(c)(1), (2) Date Dec. 30, 2020,
PCT Pub. No. WO2020/043204, PCT Pub. Date Mar. 5, 2020.
Claims priority of application No. 201811014867.7 (CN), filed on Aug. 31, 2018.
Prior Publication US 2021/0154007 A1, May 27, 2021
Int. Cl. A61F 2/24 (2006.01); A61F 2/95 (2013.01)
CPC A61F 2/2427 (2013.01) [A61F 2/2418 (2013.01); A61F 2002/9505 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A delivery device for loading, delivering and deploying an implant, wherein the delivery device comprises a handle, an inner tubular core, a sheath tube, a guide tip, an inner tube, an anchor, a transition member, and a bending controllable tube, wherein the inner tubular core is coupled, at a proximal end thereof, to an inner tubular core actuation member arranged in the handle, wherein the guide tip is disposed at a distal end of the inner tubular core and fixedly connected to a distal end of the sheath tube, and wherein the sheath tube is configured to press and retain the implant, and is sleeved over the inner tubular core;
wherein the inner tube is disposed between the inner tubular core and the sheath tube, and the inner tube is fixed, at a proximal end thereof, to an inner tube fastener arranged in the handle;
wherein the anchor is in fixed connection with a distal end of the inner tube and is configured to retain the implant;
wherein the transition member is configured as a tubular structure sleeved over the inner tube; the transition member is disposed within the sheath tube; and the transition member and the sheath tube are partially fitted against each other;
wherein the transition member comprises a transition section and a catheter section in communication with the transition section, the transition section having a proximal end in smooth and fixed connection with a distal end of the catheter section, the catheter section being coupled, at a proximal end thereof, to a catheter actuation member arranged in the handle, wherein the transition section comprises a distal end smoothly and detachably coupled to the proximal end of the sheath tube;
wherein the transition section comprises a transition sidewall disposed between the proximal end and the distal end of the transition section, the transition sidewall having an outer diameter decreased from the distal end to the proximal end of the transition section, wherein a distal end of the bending controllable tube abuts against the transition sidewall and covers a portion of the transition sidewall along an axial direction of the bending controllable tube, and the bending controllable tube is not fixedly connected to the proximal end of the transition section; the bending controllable tube is coupled, at a proximal end thereof, to a bending controllable tube actuation member arranged in the handle; and the bending controllable tube comprises a bending control mechanism adapted to adjust an angle of deflection from the axial direction of the bending controllable tube;
wherein the bending controllable tube is embedded therein with at least one metal wire configured to be pulled to achieve a bending control of the bending controllable tube wherein the inner tube is limited by the handle at six degrees of freedom including three translational degrees of freedom along three orthogonal coordinate axes X, Y and Z and three rotational degrees of freedom about the axes X, Y and Z.