Patent ID: 11925552
Assignee: VENUS MEDTECH (HANGZHOU), INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A medical assembly, comprising:
a stent, comprising an outer peripheral surface and having a compressed configuration and an expanded configuration;
at least one skirt, comprising a floating section with a free end, and having:
an axially unfolded configuration, wherein the skirt is axially unfolded around the outer peripheral surface of the stent in the compressed configuration, with the free end of the floating section at a first position, and
an axially stacked or folded configuration, wherein the floating section is axially stacked or folded around the outer peripheral surface of the stent in the expanded configuration, with the free end of the floating section at a second position, thereby functioning as a peripheral leakage occluder,
wherein there is an axial distance between the first position and the second position; and

at least one pulling string, each of the at least one pulling string connecting with the respective skirt and circumferentially and axially extending between the skirt and the stent, and having:
a first configuration, wherein the pulling string has a first axial length and a first circumferential length around the outer peripheral surface of the stent in the compressed configuration, and
a second configuration, wherein the pulling string has a second axial length and a second circumferential length around the outer peripheral surface of the stent in the expanded configuration,
wherein the second axial length is smaller than the first axial length, while the second circumferential length is greater than the first circumferential length; and

wherein the pulling string is configured to be actuated to transform from the first configuration to the second configuration by expansion of the stent from the compressed configuration to the expanded configuration, so as to actuate the skirt to transform from the axially unfolded configuration to the axially stacked or folded configuration; and
wherein the stent has a circumferential direction, the skirt has an axial edge fixed on the stent in the circumferential direction of the stent, and the axial edge of the skirt is provided with a plurality of cutting areas spaced from each other in the circumferential direction of the stent.