Variable stiffness coil for vasoocclusive devices

Details Variable stiffness coil for vasoocclusive devices Variable stiffness coil for vasoocclusive devices

2005-03-29

2005-03-29

Jackson, Gary (Department: 3731)

Surgery

Instruments

Internal pressure applicator

C606S191000

Reexamination Certificate

active

06872218

ABSTRACT:
The variable stiffness vasoocclusive coil is given variable stiffness along the length of the coil by selectively heat treating certain segments of a primary or secondary coil. The primary coil can be selectively heat treated to form soft or deformable segments along the length of the coil, and can then be shaped into a secondary shape that is set by a heat treatment process. Distal regions of the coil can also be heat treated to make the distal ends of the coil softer, more deformable, or less traumatic.

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