A NEW TYPE OF DOUBLE-LAYER COVERED STENT

摘要

A new type of double-layer covered stent, comprising a main body of the stent (12, 22); and an inner cover (14, 24)covering the main body of the stent (12, 22), which characterized in that: the covered stent also comprises an outer cover (16, 26) arranged at the near end of the main body of the stent (12, 22), the outer cover (16, 26) lies in the outside of the inner cover (14, 24), and the near end and the distal end of the outer cover (16, 26) adheres to the inner cover (14, 24) closely, and there is an open hole (17, 27) in the inner cover (14, 24). The covered stent can enhance the adherent performance of the near end of the stent, and reduce the risk of I-shape leak induced by adherence ill of the near end.