Guidewire for precision catheter positioning
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United States of America Patent
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-
Jun 18, 2002
Issued Date -
N/A
app pub date -
Apr 12, 1999
filing date -
Nov 7, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention comprises a guidewire having a compressible guide section capable of deflecting a catheter to abut a lumen wall. The compressible guide section exerts an outward radial force while it is at least partially compressed within a lumen. The guide section permits a physician to precisely locate a catheter within a body lumen and adjust a catheter tip orientation to be directed to a particular side of a body lumen. A method is disclosed for properly matching a guidewire and a catheter to operate together in the present invention, along with a force measuring instrument to assist in measuring a catheter's resistance force value. This method and systems of the present invention involve determining the exact force relationship between the compressible guide section and the resistance of the catheter in vitro.
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