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Proceedings Paper

Superelastic NiTi thin film small vessel graft for vascular repair
Author(s): Youngjae Chun; Daniel S. Levi; K. P. Mohanchandra; Fernando Vinuela; Fernando Vinuela; Gregory P. Carman
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Paper Abstract

Thin film NiTi produced by sputter deposition was used in the design of small vessel grafts intended to treat small vessel aneurysms. Thin film small vessel grafts were fabricated by "hot-target" DC sputter deposition. Both stress-strain curves and DSC curves were generated for the film used to fabricate small vessel grafts. The films used for small vessel grafts had an Af temperatures of approximately 36 degrees allowing for body activated response from a micro-catheter. Thin film small vessel grafts were tested in a pulsatile flow loop in vitro. Small vessel grafts could be compressed into and easily delivery in < 3 Fr catheters. Theoretical frictional and wall drag forces on a thin film NiTi small vessel vascular graft were calculated and the radial force exerted by thin film small vessel grafts was evaluated theoretically and experimentally. In-vivo studies in swine confirmed that thin film NiTi small vessel grafts could be deployed accurately and consistently in the swine vascular system.

Paper Details

Date Published: 6 April 2009
PDF: 11 pages
Proc. SPIE 7288, Active and Passive Smart Structures and Integrated Systems 2009, 728804 (6 April 2009); doi: 10.1117/12.815400
Show Author Affiliations
Youngjae Chun, Univ. of California, Los Angeles (United States)
Daniel S. Levi, Univ. of California, Los Angeles (United States)
K. P. Mohanchandra, Univ. of California, Los Angeles (United States)
Fernando Vinuela, Univ. of California, Los Angeles (United States)
Fernando Vinuela, Univ. of California, Los Angeles (United States)
Gregory P. Carman, Univ. of California, Los Angeles (United States)


Published in SPIE Proceedings Vol. 7288:
Active and Passive Smart Structures and Integrated Systems 2009
Mehdi Ahmadian; Mehrdad N. Ghasemi-Nejhad, Editor(s)

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