Polyurethane elastomer article with "shape memory" and medical devices therefrom
First Claim
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1. A medical device comprising a shape memory, heat shrinkable polyurethane article, wherein the article is comprised of thermoplastic urethane polymer and monomer cross-linker.
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Abstract
A polyurethane article with shape memory, comprising a mixture of thermoplastic polyurethane and reactive monomer cross-linker which is formed into a shaped article, irradiated, expanded and applied to a medical device, specifically a biomedical electrical lead.
39 Citations
27 Claims
- 1. A medical device comprising a shape memory, heat shrinkable polyurethane article, wherein the article is comprised of thermoplastic urethane polymer and monomer cross-linker.
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13. A method to encase a medical device assembly in a heat shrinkable, shape memory thermoplastic polyurethane article comprising:
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irradiating the article;
expanding the article;
placing the article around a medical device assembly; and
heating the article to conform to the medical device assembly.
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24. A medical device encased in a heat shrinkable, shape memory thermoplastic polyurethane article by a process comprising:
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irradiating the article;
expanding the article;
placing the article around a medical device assembly; and
heating the article to conform to the medical device assembly.
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Specification