Surgery – Instruments – Blood vessel – duct or teat cutter – scrapper or abrader
Patent
1992-06-08
1994-02-08
Thaler, Michael H.
Surgery
Instruments
Blood vessel, duct or teat cutter, scrapper or abrader
A61B 1732
Patent
active
052844781
ABSTRACT:
An optical valvulotome having a replaceable blade head for in situ cutting of venous valves has a catheter that can be pushed through a vein. An anchor is attached to the catheter, and a cutting head can be releasably engaged with the anchor to cut the valves as the catheter is pushed through the vein. The cutting head has two spaced apart cutting blades that form a light passageway between the blades. An optical fiber is disposed in the catheter for collecting light from the light passageway between the blades, and the optical fiber is engaged with a display apparatus for displaying a video image of the blades and vein as the catheter is pushed through the vein. The catheter can be retrieved from the vein, and the cutting head easily disconnected from the anchor and replaced with another cutting head having a size larger or smaller than the first head, as appropriate for the changing width of the lumen of the vein.
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"In Situ Saphenous Vein Bypass: 1962 to 1987" Connolly, American Journal of Surgery, Jul. 1987.
"Instrumental Evolution of the Valve Incision Method of In Situ Saphenous Vein Bypass," Leather, et al. Journal of Vascular Surgery, Jan. 1984.
Publication announcement: In Situ Bypass Grafting by Dr. LeMaitre published by Vascutech Inc. 1987.
Advertisement: Leather In Situ Valve Cutter Kit by AHS Corp., Jun. 1985.
Advertisement: Hall Vein Stripper by Cabot Limited Apr. 1986.
Sales material: Vascutech, Inc.--The LeMaitre Valvulotome System, Jun. 1987.
Cohen Donald
Nobles Anthony A.
Rogitz John L.
Thaler Michael H.
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