Patent ID: 11938025
Assignee: VENUS MEDTECH (HANGZHOU), INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A medical system, comprising:
an expandable prosthetic implant;
a catheter assembly comprising a sheath for loading and retracting the prosthetic implant and an inner shaft assembly, wherein the prosthetic implant is connected to a distal end of the inner shaft assembly, and the sheath has an axial direction and a circumferential direction and comprises:
a proximal section; and
an expandable distal section connected to the proximal section, the expandable distal section having relative converged and flared configurations and comprising:
a plurality of support rods arranged at intervals in the circumferential direction; and
a plurality of connecting strips, wherein more than two connecting strips are provided in the axial direction between two adjacent support rods, and each connecting strip is approximately W-shaped and folded back and forth and two ends thereof are turned outwards to connect with the respective supporting rods at connection portions which have the same axial level; and

a control handle, wherein a proximal end of the catheter assembly is connected to the control handle, and the control handle is configured to drive the sheath to move distally to make the expandable distal section of the sheath act on the prosthetic implant that has already been at least partially expanded which in turn drives the expandable distal section to transform from the converged configuration to the flared configuration until the prosthetic implant is completely retracted and compressed into the sheath.