Prosthesis with Moveable Fenestration
AssigneeCook Incorporated
InventorsDarin G. Schaeffer, Shyam Kuppurathanam
Life of this patent
Estimating the term…
Abstract
An endoluminal prosthesis with a moveable fenestration including a tubular graft body having a proximal end, a distal end, a surface plane at least one fenestration having a perimeter disposed in a sidewall of the tubular body between the proximal end and the distal end, a first biocompatible graft material, and a second biocompatible graft material adjacent to and surrounding the perimeter of the at least one fenestration. The second biocompatible graft material has at least one characteristic different from the first biocompatible graft material and is more flexible than the first biocompatible graft material and is movable relative to the surface plane of the tubular graft body.
Claims20
An endoluminal prosthesis, comprising:
- a tubular graft body comprising:
- a proximal end;
- a distal end;
- a surface plane;
- at least one fenestration having a perimeter disposed in a sidewall of the tubular body between the proximal end and the distal end;
- a first biocompatible graft material;
- and
- a second biocompatible graft material adjacent to and surrounding the perimeter of the at least one fenestration;
- where the second biocompatible graft material has at least one characteristic different from the first biocompatible graft material, and
- where the second biocompatible material is more flexible than the first biocompatible graft material and is movable relative to the surface plane of the tubular graft body.
An implantable prosthesis for treatment of a main vessel defect near one or more branch vessels, comprising:
- a graft comprising a first biocompatible graft material forming a tubular main body defining a lumen with a proximal end, a distal end, and a surface plane;
- at least one fenestration having a perimeter positioned intermediate the proximal and distal ends disposed within a sidewall of the main body, the sidewall comprising a second biocompatible graft material adjacent to and surrounding the fenestration, the second biocompatible graft material having at least one characteristic different from the first biocompatible material and is defined by a woven fabric comprising yarns aligned in a first direction interwoven with yarns aligned in a second direction, where yarns aligned in the first direction are increased and decreased while the yarns in the second direction are held constant to form a protrusion;
- where the second biocompatible graft material is of a greater flexibility than the first biocompatible material such that movement of the fenestration relative to the surface plane of the main graft is facilitated and where the second biocompatible graft material lies in a different plane than the surface plane.
A method of producing an endoluminal prosthesis, comprising the steps of:
- providing textile yarns of a first biocompatible graft material to be aligned in a first direction and a second direction;
- weaving the textile yarns to produce a woven graft having a surface plane;
- introducing textile yarns of a second biocompatible graft material in the first direction while keeping the number of textile yarns in the second direction constant;
- withdrawing the added textile yarns in the first direction at the same rate to create a protrusion;
- and
- creating a fenestration through the protrusion, where the second biocompatible material is adjacent to and surrounding the fenestration and is moveable relative to the surface plane of the woven graft.
Dependencies are inferred from the claim text.