Adjustable intra-luminal valvulotome

Details Adjustable intra-luminal valvulotome Adjustable intra-luminal valvulotome

1989-08-07

1991-09-17

Thaler, Michael H.

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

606171, A61B 1732

Patent

active

050491547

ABSTRACT:
An adjustable intraluminal valvulotome including a hollow tubular member in which is slidably disposed a control wire. First and second spring wire elements respectively interconnect first and second cutting blades having first and second perpendicular cutting edges to one end of the control wire. There is a handle member proximate the other end of the control wire for controlling longitudinal movement of the control wire in and out of the tubular member. The handle member enables the first and second cutting blades to move from a first extended cutting position to a second retracted position. A receptacle at the distal end of the tubular member restrains the cutting blades in a fully retracted non-cutting position and prevents their engagement with the vein or valves. A method of using a valvulotome to rupture and render inoperative the valves is also disclosed.

REFERENCES:
patent: 518600 (1894-04-01), Hallman
patent: 2655154 (1953-10-01), Richter
patent: 3404677 (1968-10-01), Springer
patent: 4200111 (1980-04-01), Harris
patent: 4655217 (1987-04-01), Reed
patent: 4768508 (1988-09-01), Chin et al.

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