Multimodal rotary abrasion and acoustic ablation catheter
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United States of America Patent
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-
Jul 20, 1999
Grant Date -
N/A
app pub date -
Sep 18, 1997
filing date -
Jun 23, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ablation and cutting catheter (10), which may be used for angioplasty, includes a rotary shaft (20) adapted to be driven by a rotary motor (22). The shaft (20) is free for rotation and for some axial motion. The shaft (20) is coupled to a rotational-to-axial motion converter (FIGS. 2a, 2b, 2c; 3a, 3b, 3c) which is affixed to the shaft. The converter moves axially in response to rotation of the shaft, and also rotates. The axial motion is converted into acoustic energy for ablation, and the rotation can be used with a cutting tool for cutting. A guide-wire lumen exteds through the shaft and the cutter/acoustic applicator head, for accepting a guide-wire for guiding the catheter.
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