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US 2012/0259170 A1Published application
Method for making a flexible stent-graft
AssigneeCook Medical Technologies LLC
InventorsDavid G. Grewe, Keith R. Milner, Blayne A. Roeder, Steven J. Charlebois
Life of this patent
Estimating the term…
Abstract
A method of making a stent-graft is provided. The method includes mounting a stent on a mandrel so that the stent is stretched when it is on the mandrel. A graft layer is then adhered to the stent while it is mounted on the mandrel. When the stent-graft is removed from the mandrel, the stent contracts and the graft layer becomes partially wrinkled when the stent is in its expanded relaxed state.
Claims20
A method for making a stent-graft, comprising:
- disposing a stent on a mandrel, said mandrel extending axially through an inner lumen of said stent and said stent being in contact with an outer circumference of said mandrel, wherein said stent is self-expanding to an expanded relaxed state, and a diameter of said outer circumference of said mandrel is at least 5% larger than a diameter of said expanded relaxed state of said stent, said stent thereby being circumferentially stretched by said mandrel;
- adhering a graft layer to said stent while said stent is disposed on said mandrel;
- and
- removing said stent from said mandrel after said graft layer is adhered to said stent, wherein said stent circumferentially contracts substantially to said expanded relaxed state, said graft layer thereby being at least partially wrinkled in said expanded relaxed state.
1 more element
A method for making a stent-graft, comprising:
- disposing a stent on a mandrel, said mandrel extending axially through an inner lumen of said stent, wherein said stent is self-expanding to an expanded relaxed state with a predetermined length at said expanded relaxed state, and said stent is axially stretched on said mandrel at least 10% more than said predetermined length;
- adhering a graft layer to said stent while said stent is disposed and axially stretched on said mandrel;
- and
- removing said stent from said mandrel after said graft layer is adhered to said stent, wherein said stent axially contracts substantially to said predetermined length, said graft layer thereby being at least partially wrinkled in said expanded relaxed state.
1 more element
A method for making a stent-graft, comprising:
- disposing a stent on a mandrel, said mandrel extending axially through an inner lumen of said stent, wherein said stent is self-expanding to an expanded relaxed state with a predetermined length at said expanded relaxed state, and one side of said stent is axially stretched on said mandrel at least 10% more than an opposing side of said stent;
- adhering a graft layer to said stent while said stent is disposed and axially stretched on said mandrel;
- and
- removing said stent from said mandrel after said graft layer is adhered to said stent, wherein said stent axially contracts substantially to said predetermined length, said graft layer thereby being at least partially wrinkled in said expanded relaxed state.
1 more element
Dependencies are inferred from the claim text.