Patent ID: 11918452
Assignee: LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A covered stent, comprising a covering film and a first wave ring provided on at least one end of the covered stent, wherein the first wave ring does not exceed the covering film, the first wave ring is formed of braided wires by means of braiding, each of the braided wires has wire heads and a wire rod, with the wire heads being located at two ends of the wire rod, and the wire heads of the braided wire are wound around the adjacent wire rod, wherein that the covered stent further comprises a limiting unit, with the limiting unit being arranged on the wire head and the wire rod adjacent to the wire head, and the limiting unit limiting the range of axial and/or radial movement of the wire head relative to the wire rod; and
the limiting unit comprises at least two first projections provided only on the wire head and at least one second projection provided only on the wire rod adjacent to the wire head, the second projection being located between the two adjacent first projections; or the limiting unit comprises at least one first projection provided only on the wire head and at least two second projections provided only on the wire rod adjacent to the wire head, the first projection being located between the two adjacent second projections.