Surgery – Instruments – Blood vessel – duct or teat cutter – scrapper or abrader
Patent
1992-01-13
1993-03-09
Yasko, John D.
Surgery
Instruments
Blood vessel, duct or teat cutter, scrapper or abrader
606170, 606180, 604 22, A61B 1732
Patent
active
051922916
ABSTRACT:
A rotationally expandable atherectomy cutter assembly for cutting plaque from a stenosis in an artery includes a plurality of radially separated and axially aligned blade elements. The distal ends of each blade element are fixably connected to a hub and the proximal ends of each blade element slidably engage helical slots formed in a distally flared extension tube of the assembly. The extension tube is connectable to a rotatable catheter. The helical slots are oriented in a first direction such that contact of the cutter assembly with the plaque of the stenosis, in conjunction with a second direction rotation of the catheter causes the proximal ends of the blade assembly to slide distally along the helical slots thereby expanding the cutting radius of the cutter assembly.
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Interventional Technologies Inc.
Lewis William W.
Yasko John D.
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