Catheter with full-length core wire shaft for core wire interchangeability
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United States of America Patent
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-
Mar 13, 2007
Grant Date -
May 13, 2004
app pub date -
Aug 15, 2003
filing date -
Nov 12, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A catheter to be used without a guidewire which includes a support wire shaft formed of metal, a balloon mounted on a distal portion of the catheter, and an inflation shaft for inflating the balloon, wherein a core wire may be interchangeably inserted into the support wire shaft when the catheter is within a human body to change the stiffness and improve control thereof. In one embodiment, the portion of the support wire shaft that extends just proximal of, through and distal of the balloon is formed entirely of a metal wound coil. The flexibility characteristics of this support wire shaft can be controlled by varying the pitch of the wound coil and the thickness of the wire or ribbon it is made from. An overjacket is also provided on the metal wound coil portion to hold pressure within the inflation lumen and provide a suitable material for bonding a distal end of the balloon to the support wire shaft.
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Family
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Cited Art Landscape
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