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US 2014/0277371 A1Published application
Atraumatic stent crowns
AssigneeCook Medical Technologies LLC
InventorMichael Ryan
Life of this patent
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Abstract
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.
Claims20
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.
7 more elements
A method of manufacturing a stent having a plurality of atraumatic crown tips, each atraumatic crown tip, respectively, comprising a first wire segment having a proximal end and a distal end;
- a second wire segment having a proximal end and a distal end;
- and 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 a first end of a 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, the method comprising:
- bonding a distal end of a first separated wire and a distal end of a second separated wire to a radial force reducing connector segment, wherein a proximal end of each of the first separated wire and the second separated wire is integrally connected with the first end of the tubular stent body.
1 more element
Dependencies are inferred from the claim text.