Hollow medical wires and methods of constructing same
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United States of America Patent
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Apr 23, 2002
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app pub date -
Feb 16, 2000
filing date -
Mar 6, 1997
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Abstract
The present invention provides an apparatus for performing angioplasty or vascular intervention procedures. The apparatus of the present invention comprises a catheter apparatus comprised of a superelastic hollow guidewire, a balloon member and a flexible tip. The superelastic hollow guidewire of the invention is preferably a hypotube of nitinol alloy. The use of nitinol alloy as hollow guidewire provides a catheter apparatus having high flexibility and torqueability as well as small cross sectional diameter.
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