Invention Grant
- Patent Title: Devices configured from heat shaped, strain hardened nickel-titanium
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Application No.: US09896435Application Date: 2001-06-29
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Publication No.: US06602272B2Publication Date: 2003-08-05
- Inventor: John F. Boylan , Keif Fitzgerald , Zhi Cheng Lin
- Applicant: John F. Boylan , Keif Fitzgerald , Zhi Cheng Lin
- Main IPC: A61M2900
- IPC: A61M2900

Abstract:
Cold worked nickel-titanium alloys that have linear pseudoelastic behavior without a phase transformation or onset of stress-induced martensite as applied to a medical device having a strut formed body deployed from a sheath is disclosed. In one application, an embolic protection device that employs a linear pseudoelastic nitinol self-expanding strut assembly with a small profile delivery system for use with interventional procedures is disclosed. The expandable strut assembly is covered with a filter element and both are compressed into a restraining sheath for delivery to a deployment site downstream and distal to an interventional procedure. Once at the desired site, the restraining sheath is retracted to deploy the embolic protection device, which captures flowing emboli generated during the interventional procedure. Linear pseudoelastic nitinol is used in the medical device as distinct from non-linear pseudoelastic (i.e., superelastic) nitinol.
Public/Granted literature
- US20020052627A1 Devices configured from heat shaped, strain hardened nickel-titanium Public/Granted day:2002-05-02
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