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

Claim 0:
1. 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 is inclined at an angle with respect to a central axis of, the periphery of the end portion of the covered unit, 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 the central axis of the periphery of the covered unit gradually increases; and
wherein the bare unit comprises at least two inward-tilting wave bodies, all of the inward-tilting wave bodies are continuously arranged on the periphery of the end portion of the covered unit, and angles of circular arcs occupied by all of the inward-tilting wave bodies on the periphery of the end portion of the covered unit close to the bare unit are A, where A is more than or equal to 60° and less than or equal to 180°.