Catheter with flexible cutter

Details Catheter with flexible cutter Catheter with flexible cutter

1989-07-19

1990-03-20

Thaler, Michael H.

Surgery

Means for introducing or removing material from body for...

With means for cutting, scarifying, or vibrating tissue

606194, 606159, A61B 1732

Patent

active

049097814

ABSTRACT:
A flexible catheter for opening obstructions in blood vessels comprises a coil spring rotatably mounted in the end of a hollow tube. The spring is driven off center by a flexible wire drive shaft that is an extension of the coil spring. The end turn of the coil spring forms a cutting edge. A thin, flexible wire guide is affixed to the outside of the hollow tube adjacent to the coil spring and extends in front of the cutting edge. The wire guide has a free end that passes back into the coil spring and hollow tube. The wire guide follows the orientation of the blood vessel and guides the coil spring.

REFERENCES:
patent: 3749085 (1973-07-01), Willson et al.
patent: 4653496 (1987-03-01), Bundy et al.
patent: 4772258 (1988-09-01), Marangoni et al.
patent: 4819634 (1989-04-01), Shiber

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