Patent ID: 11890182
Assignee: LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 5:
6. A covered stent, wherein the covered stent comprises:
a covered unit; and
a bare unit, which is a ring-shaped structure and arranged on a periphery of an end portion of the covered unit, wherein the bare unit comprises an inward-tilting wave body comprising a first wave crest and a first wave rod, with the first wave rod connected to the first wave crest, the first wave crest is further from the covered unit than other positions of the inward-tilting wave body, the first wave rod is planar, and from the first wave crest to an end of the bare unit adjacent to the covered unit a radial distance from the inward-tilting wave body to a central axis of the covered unit gradually increases;
wherein the inward-tilting wave body further comprises a first wave trough, a vertex of the first wave trough is located on the periphery of the end portion of the covered unit and the first wave rod connects the first wave crest with the first wave trough;
wherein the bare unit further comprises an upright wave body connected to the inward-tilting wave body, and with reference to a cylindrical curved surface where an outer circumferential surface of the covered unit is located, the upright wave body is located on the cylindrical curved surface.