Articulated ablation device

Details Articulated ablation device Articulated ablation device

1999-10-01

2000-10-03

Buiz, Michael

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

606170, A61B 1700

Patent

active

061266671

ABSTRACT:
An ablation device has a burr assembly that is articulated to allow the burr to rotate relative to a longitudinal axis of the driveshaft. The burr is formed in two parts. An inner burr member is coupled to a rotatable driveshaft and has an arcuate region distal to the driveshaft. An outer burr member has an inner cavity in which the inner burr member is positioned. The outer burr member is keyed to the inner burr member, such that the outer burr member rotates with rotation of the driveshaft and inner burr member. However, an inner surface of the outer burr member contacts the arcuate portion of the inner burr member, such that the outer burr member is free to pivot about the arcuate surface of the inner burr member, relative to a longitudinal axis of the driveshaft. Aligned passageways are provided in the driveshaft and inner and outer burr members, to allow a guide wire to extend therethrough. Alternatively, the burr is made of an elastomeric material, and a passageway extends longitudinally through the burr. A bearing positioned in a distal end of the passageway is longitudinally spaced from a collet positioned in a proximal end of the passageway. Given the articulated nature of the burr assembly, the ability of the guide wire to bend, unhindered by the burr assembly, is improved, thereby enhancing the ability of the guide wire and burr assembly to remain centered within a vessel lumen.

REFERENCES:
patent: 4445509 (1984-05-01), Auth
patent: 5242461 (1993-09-01), Kortenbach et al.
patent: 5314438 (1994-05-01), Shturman
patent: 5449369 (1995-09-01), Imran
patent: 5925055 (1999-07-01), Adrian et al.
patent: 5976165 (1999-11-01), Ball et al.

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