Atherectomy catheter

Details Atherectomy catheter Atherectomy catheter

1992-01-24

1992-10-13

Thaler, Michael H.

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

604 22, A61B 1732

Patent

active

051547244

ABSTRACT:
An atherectomy catheter including an expandable cutter head having spaced apart blades radially extending from a cutter sleeve at a leading end of the cutter head. A torque tube is attached to and surrounds the blades at an expanding end of the cutter head opposite the leading end. An expander cable is attached to a bushing within the cutter head adjacent to the cutter sleeve and blades with the expander tube axially displaceable through the torque tube. A guidewire slidably extends through the bushing and expander tube. A guiding catheter substantially encloses the torque tube with the toruqe tube rotatable and axially displaceable within the guiding catheter, to rotate the cutter head as it engages a blockage in a blood vessel.

REFERENCES:
patent: 4445509 (1984-05-01), Auth
patent: 4885003 (1989-12-01), Hillstead
patent: 4886061 (1989-12-01), Fischell et al.
patent: 4895560 (1990-01-01), Papantonakos
patent: 4966604 (1990-10-01), Reiss
patent: 5000185 (1991-03-01), Yock
patent: 5030201 (1991-07-01), Palestraut

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