Superelastic formable guidewire with malleable cladding
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United States of America Patent
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Nov 29, 1994
Issued Date -
N/A
app pub date -
Oct 15, 1993
filing date -
May 21, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A guidewire is provided having a malleable segment extending beyond a superelastic tip portion of the guidewire. Such a configuration provides a guidewire which is resistant to kinking and plastic deformation in the superelastic portion, but which has a distal segment which can be shaped by a physician immediately prior to use in a surgical procedure. The malleable segment can be attached to the distal end of the superelastic tip portion, or alternatively, can result from a malleable coating on a portion of the superelastic tip, wherein the coating is thick enough to allow the coated portion of the tip to be formed into a desired shape. The malleable segment can be radiopaque to ease fluoroscopic visualization of the guidewire. In addition, the entire guidewire located proximally to the malleable segment can be fabricated from a superelastic alloy to provide resistance to kinking and plastic deformation along virtually the entire length of the guidewire.
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