Valvulotome with a laterally offset curved cutting edge

Details Valvulotome with a laterally offset curved cutting edge Valvulotome with a laterally offset curved cutting edge

1994-09-06

1996-05-07

Pellegrino, Stephen C.

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

606170, A61B 1732

Patent

active

055141510

ABSTRACT:
A valvulotome that cuts a vein valve leaflet from apex to edge by applying a tensile force to the leaflet. The valvulotome has a shaft, on the distal end of which is a laterally-offset extension, to the distal end of which is attached the distal end of a blade with a curved cutting edge. The blade is substantially parallel to the shaft. The cutting edge faces the extension, which shields the cutting edge. Opposite the cutting edge, the blade has a blunt back that has a substantially straight part, and a part, towards its proximal end, that curves towards the extension. The blade may be pivotally attached to the extension with an actuator that opens or closes the blade. A method of using the valvulotome to carry out a valvotomy in a vein includes piercing the valve leaflet with the valvulotome close to the apex of the leaflet, and applying a tensile force to the leaflet with the valvulotome to cut the leaflet from apex to edge.

REFERENCES:
patent: 2676595 (1954-04-01), Dyekjaer
patent: 4768508 (1988-09-01), Chin et al.
patent: 4952215 (1990-08-01), Ouriel et al.
patent: 5026383 (1991-06-01), Nobles
patent: 5069679 (1991-12-01), Taheri
patent: 5087264 (1992-02-01), Miller et al.
patent: 5092872 (1992-03-01), Segalowitz
patent: 5133725 (1992-06-01), Quadri
patent: 5141491 (1992-08-01), Bowald
patent: 5152771 (1992-10-01), Sabbaghian et al.
patent: 5171316 (1992-12-01), Mehigan
Valvulomtonmy of Valves in the Saphenous Vein Graft Before Coronary Artery Bypass Mills et al-pp. 878-879-Biosurge vol. 71 Nov. 6 Jun. 1976-Feb. 23, 1988.
"The New Hall Valvulotome," product leaflet published by Solco Basle, Inc., copyright date: 1990.
"Insitucat Valvulotome," product leaflet published by Aesculap, date unknown.
"Leather Retrograde Valvulotome," product leaflet published by Baxter International, Inc. Copyright date, 1990.
"The Olympus Valvulotomes," product leaflet published by Olympus Corporation, Copyright date: 1990.
"The LeMaitre Valvulotome System," product leaflet published by Vascutech, Inc., date unknown.
"Leather Karmody In Situ Bypass Set," product leaflet published by American Hospital Supply Corporation, copyright date: 1964.
Baxter Healthcare Corporation Catalog, pp. E115 and E116 showing three types of Leather brand valvulotomes, copyright date: 1988.
Pilling catalog, p. 226, showing Mills Valvulotome, Coarctation hook, and other, unnumbered pages showing DeBakey valve hooks, and other microsurgery instruments; date unknown.

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