Methods of making shape memory films by chemical vapor deposition and shape memory devices made thereby
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United States of America Patent
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Sep 14, 2005
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Sep 14, 2005
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Abstract
A method of depositing shape memory or superelastic thin films by chemical vapor deposition (CVD) and medical devices made thereby, including stents, grafts, stent-grafts, stent covers, occlusive and filter membranes and drug-delivery devices. The method entails a thin film is deposited on a substrate surface using a CVD reaction in the production of a film of nickel-titanium shape memory or superelastic alloy. Such nickel-titanium-based shape memory or superelastic alloys may be binary nickel-titanium alloys or may include additional compounds to form ternary, quaternary, or higher level alloys.
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