Atherectomy catheter

Details Atherectomy catheter Atherectomy catheter

2007-03-06

2010-11-16

Nguyen, Anhtuan T (Department: 3731)

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

C606S170000, C606S180000

Reexamination Certificate

active

07833240

ABSTRACT:
An atherectomy catheter includes an outer tube; an inner tube which is inserted into the outer tube rotatably about an axis thereof and axially movably; a removing member fixed to a distal portion of the inner tube and accommodated in the outer tube to drill and remove an occlusive material which stenoses or occludes a lumen of a blood vessel; and a guide member mounted on the inner tube in penetration therethrough so that the guide member functions as the axis of the inner tube when the inner tube rotates. The removing member has a developed state in which a distal end of the removing member unfolds when the removing member is projected from a distal portion of the outer tube and radially expands owing to an elastic restoring force thereof, and the removing member can drill said occlusive material in the developed state by rotating about the guide member functioning as an axis of said removing member and moving the removing member toward a distal end of the atherectomy catheter.

REFERENCES:
patent: 5074845 (1991-12-01), Miraki et al.
patent: 5254107 (1993-10-01), Soltesz
patent: 5490859 (1996-02-01), Mische et al.
patent: 6036708 (2000-03-01), Sciver
patent: 6638268 (2003-10-01), Niazi
patent: 1000163 (1996-10-01), None
patent: WO 94/24946 (1994-11-01), None
patent: 01/74255 (2001-10-01), None
Partial European Search Report for 07004427, dated Jul. 10, 2007.

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