Surgery – Instruments – Blood vessel – duct or teat cutter – scrapper or abrader
Patent
1989-06-14
1991-06-25
Hafer, Robert A.
Surgery
Instruments
Blood vessel, duct or teat cutter, scrapper or abrader
606170, 606180, A61F 17132
Patent
active
050263838
ABSTRACT:
An apparatus for in-situ cutting through one-way valves in a vein to convert the vein for use as an artery and a method therefor. The apparatus employs a cutting catheter and a pulling catheter. The pulling catheter is advanced through the vein in the normal direction of blood flow and is then connected to a cutting catheter and pulled back reversely through the one-way valves. The cutting catheter carries cutting blades which sever the valve cusps. The connection between the two catheters is effected by a filament which can be swiftly and readily connected to the pulling catheter. The cutting catheter employs a viewing scope which can be utilized to observe the valve cusps and align the cutting blades with the cusps to achieve effective cutting.
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patent: 4493321 (1985-01-01), Leather
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"In Situ Saphenous Vein Bypass: 1962 to 1987" by John E. Connolly, M.D., The American Journal of Surgery, Jul. 1987.
Instrumental Evolution of the Valve Incision Method of In Situ Saphenous Vein Bypass by Robert P. Leather, M.D., Dhiraj M. Shah, M.D., John D. Corson, M.D. and Allastair M. Karmody, M.D., Journal of Vascular Surgery, Jan. 1984.
Publication announcement: In Situ Bypass Grafting by Dr. LeMaitre.
Advertisement: Leather In Situ Valve Cutter Kit by American Hospital Supply Corp., Jun. 1985.
Advertisement: Hall Vein Stripper by Cabot Limited, Apr. 1986.
Sales Information: Vascutech, Inc.--The LeMaitre Valvulotome System, Jun. 1987.
Hafer Robert A.
Owens Kerry
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