Surgery – Instruments – Blood vessel – duct or teat cutter – scrapper or abrader
Patent
1999-02-03
2000-09-05
Thaler, Michael H.
Surgery
Instruments
Blood vessel, duct or teat cutter, scrapper or abrader
A61B 1722
Patent
active
061136158
ABSTRACT:
An ablation device (10) includes a drive shaft (12) and an ablation burr (14) secured to the distal end of the drive shaft thereto. A guide wire (18) extends through the drive shaft and the ablation burr. To direct the ablation burr laterally within a patient's vessel, the atherectomy device includes one or more bias wires (30) that extend generally parallel to and spaced from the longitudinal axis of the drive shaft such that engagement of the bias wires against an obstruction in a patient's vessel will force the ablation burr to move laterally within a patient's blood vessel.
To rotate the bias wires in a patient's blood vessel, the bias wire may be coupled to a catheter surrounding the drive shaft. Alternatively, the catheter is designed to engage the bias wires when the drive shaft is retracted into the catheter. The bias wires will then rotate as the catheter is rotated.
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Bui Vy Q
Sci-Med Life Systems, Inc.
Thaler Michael H.
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