Multimodal rotary abrasion and acoustic ablation catheter

Details Multimodal rotary abrasion and acoustic ablation catheter Multimodal rotary abrasion and acoustic ablation catheter

1997-09-18

1999-07-20

Buiz, Michael

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

606169, 606170, 606171, 606178, 604 22, A61B 1722

Patent

active

059250550

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.

REFERENCES:
patent: 5423797 (1995-06-01), Adrian et al.
patent: 5569179 (1996-10-01), Adrian

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