Surgery – Instruments – Blood vessel – duct or teat cutter – scrapper or abrader
Patent
1989-05-17
1991-10-22
Yu, Mickey
Surgery
Instruments
Blood vessel, duct or teat cutter, scrapper or abrader
606170, A61B 1732
Patent
active
050592033
ABSTRACT:
A miniature rotatable work wheel includes a cutting blade that is integrally formed with a drive hub and axle and mounted for rotatable movement at the end of a casing member. The casing member is a multi lumen tube. A single monofilament drive line is looped around the drive hub and extends through separate lumens of the multi lumened tube to a source of drive power. The drive hub has sharp corners and creates a positive drive connection with the monofilament drive line at the cutting blade. The hub also has a cupped cross section for inhibiting the monofilament drive line from riding off the hub. A drag load is applied to the payout end of the monofilament drive line close to the drive hub. The miniature powered surgical tool may be used with a catheter to incise occlusions in blood vessels for performing enhanced balloon angioplasties. It may also be used by a surgeon as a power scalpel. A milling type abrasive work wheel is disclosed as is an axially rotatable work wheel and a low friction drive system.
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Brown Michael
Camasto Nicholas A.
Yu Mickey
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