ATRAUMATIC STENT CROWNS

摘要

Methods and apparatuses of atraumatic stents with likely reduced rates of tissue perforation are provided. The stents of the invention have crowns with crown tips having apexes made of a radial force reducing material. The apexes are soft and flexible and reduce the radial force at the crown relative to the stent body allowing the crowns to collapse with greater ease compared to the central portion of the stent.

主权项

1. A stent comprising
(a) a tubular stent body having a first end and a second end; and (b) a first crown comprising a circumferential row of first crown tips, each first crown tip respectively comprising:
(i) a first wire segment having a proximal end and a distal end;(ii) a second wire segment having a proximal end and a distal end; and(iii) an apex; wherein the proximal end of the first wire segment and the proximal end of the second wire segment are each integrally connected with the first end of the tubular stent body and the distal end of the first wire segment and the distal end of the second wire segment are connected to the apex; and wherein each apex of a plurality of the first crown tips comprises, respectively, a radial force reducing connector segment.