Atherectomy catheter having flexible nose cone
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United States of America Patent
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Oct 5, 1993
Grant Date -
N/A
app pub date -
Jan 22, 1992
filing date -
Jan 22, 1992
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An atherectomy catheter comprises a flexible tube having a proximal end and a distal end, and a cutter housing secured to the proximal end. A spring tip nose cone is secured to a distal end of the cutter housing and comprises a relatively soft polymeric wall having a spring coil embedded therein. The spring tip nose cone has a controlled flexibility, generally being more flexible toward the distal tip. The spring coil inhibits collapse of the nose cone under the expected conditions of use, and the flexibility and non-collapsibility together assure that the nose cone can be introduced over a movable guide wire without substantial binding. Means may be provided for inhibiting loss of atheroma from the interior of the nose cone.
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