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US 2010/0244305 A1Published application
Method of manufacturing a polymeric stent having improved toughness
OwnerJoseph H. Contiliano, Qiang Zhanginventors
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Abstract
Methods of manufacturing polymeric intraluminal stents are disclosed. Specifically, a method of manufacturing polymeric intraluminal stents by inducing molecular orientation into the stent by radial expansion.
Claims2
A method of manufacturing polymer stents comprising the steps of:
- a. providing a polymer tubing having a diameter A;
- b. cutting a stent from the polymer tubing;
- and
- c. orienting the stent having a diameter A by expanding the stent to a diameter B.
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A method of manufacturing polymer stents, comprising
- a. providing a polymeric stent wherein the stent comprises a polymer having a Tg;
- b. orienting the molecular structure of the stent by heating the stent above the Tg of a polymer for a sufficiently effective period of time;
- c. radially expanding the stent to diameter B;
- and,
- d. cooling the stent to below the Tg, wherein diameter B is greater than diameter A.
2 more elements
Dependencies are inferred from the claim text.