Apparatus and methods to enhance bonding in endoluminal prostheses
AssigneeCook Medical Technologies LLC
InventorWilliam K. Dierking
Life of this patent
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Abstract
The present embodiments provide an endoluminal prosthesis comprising a first membrane having a lumen for allowing fluid flow, and a stent having contracted and expanded states. At least one surface enhancement member, separate from the stent, is secured to the stent prior to a coxial overlapping state of the stent and the first membrane. The at least one surface enhancement member has stronger bonding properties with the first membrane, relative to bonding properties of bare surfaces of the stent with the first membrane, when the stent and the first membrane are in the coaxially overlapping state.
Claims20
An endoluminal prosthesis, comprising:
- at least one stent having a surface;
- at least one surface enhancement member, separate from the stent, wrapped around at least one portion of the surface of the stent;
- a first membrane having a lumen for allowing fluid flow therethrough, the first membrane disposed coaxially about the at least one stent and the at least one surface enhancement member, and bonded to the at least one surface enhancement member,
- where the bond between the first membrane and the at least one surface enhancement member has a bond strength greater than a bond strength between the first membrane and the surface of the stent.
An endoluminal prosthesis, comprising:
- at least one stent comprising at least one strut, the strut having a circumferential surface;
- at least one filament separate from the strut, wrapped around at least a portion of the strut;
- a first membrane having a lumen for allowing fluid flow therethrough, the first membrane disposed coaxially about the at least one stent and the at least one filament, and bonded to the at least one filament,
- where the bond between the first membrane and the at least one filament has a bond strength greater than a bond strength between the first membrane and an exposed surface of the stent.
An endoluminal prosthesis, comprising:
- a first membrane comprising a polymer solution and having a lumen for allowing fluid flow;
- a stent having contracted and expanded states;
- and
- at least one surface enhancement member, separate from the stent, which is secured to the stent prior to coxial overlapping of the stent and the first membrane;
- wherein, after coxial overlapping of the stent and the first membrane, curing of the polymer solution causes surfaces of the at least one surface enhancement member to securely bond with the polymer solution.
Dependencies are inferred from the claim text.