Apparatus for disrupting vein valves

Details Apparatus for disrupting vein valves Apparatus for disrupting vein valves

1995-10-18

1998-05-12

Thaler, Michael H.

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

A61B 1732

Patent

active

057498822

ABSTRACT:
A valvulotome for disrupting valve cusps in the vein of a patient includes a shaft and a cutting member which extends along an axis that defines an axial direction as well as an angular direction. First and second portions of the cutting member define respective cutting edges which extend outwardly of the axis in an angular relationship and an axial relationship with each other. The first and second cutting edges engage and disrupt different cusps of the valve when the shaft is withdrawn axially from the vein. Each of the cutting edges is protected by a proximate shoulder which inhibits the engagement of sidebranches by the associated cutting edge. The cutting member may be formed as a helical blade, a wire or a cylinder and may be provided with a swivel coupling as well as a sheath operable to cover or expose the cutting member.

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"Valvulotome (Detachable Type)", Olympus, Instruction Booklet.
"Leather Retrograde Valvulotome", Baxter (V. Mueller Division), Instruction Booklet, 1988.
"Scanlan International Surgical Instrumentation Catalog", Scanlan Int'l, Inc., St. Paul, MN., 1988, pp. 53, 54.

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