Guide wire following tunneling catheter system and method for transluminal arterial atherectomy
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United States of America Patent
Stats
-
Feb 6, 1990
Issued Date -
N/A
app pub date -
Jun 10, 1988
filing date -
Aug 31, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An atherectomy catheter is advanced over a guide wire in the anterograde direction to the site of an arterial stenosis. The distal end of the catheter is centered around the guide wire which has been previously advanced through the stenotic lumen. The catheter is then advanced over the guide wire with its sharpened distal end cutting through the stenosis. The atherectomy catheter can also employ rotation or vibration or an electrocautery current to enhance the catheter's cutting action. Suction applied at the catheter's proximal end is used to enhance the collection of plaque cut from the stenosis at the catheter's distal end so that the cut plaque enters a single passageway that lies between the outer surface of the guide wire and the inner surface of the cylindrical catheter.
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