Small diameter guidewires of multi-filar, cross-wound coils
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United States of America Patent
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-
Nov 19, 1991
Issued Date -
N/A
app pub date -
Jan 18, 1991
filing date -
Nov 23, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A medical guidewire having a distal tip portion for advancement through a body by application of force to a proximal end portion, comprising: an elongated multi-filar coil structural element, and disposed thereabout and along a substantial portion of the length of the structural element, a sheath formed of material that is non-corrosive within the body, the sheath being adapted to flex in unison with the structural element without kinking, the sheath and structural element in combination having a torque response along the joined length approaching 1:1, thereby allowing control of the distal tip at the guidewire within a body by application of rotational force to the proximal end portion outside the body.
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