Patent ID: 7316697
Filing Date: 2008-01-08
Classification: A61B

Abstract:
1. A method for removing an obstruction from within a patient's vessel comprising: inserting into the vessel a vessel cleaning system having a housing connected to a flexible-tube with an open distal end, a motor-driven flexible agitator-shaft rotatably disposed in the flexible-tube, and an offset distal-agitator connected to the agitator-shaft extending from the open distal end, whereas the distal-agitator is at least partially made of a spiral wire winding; and rotating the distal-agitator with an effective diameter that is larger than its cross-sectional diameter at a speed sufficient to break the obstruction into pieces and in a direction, relative to the direction of the winding of the distal-agitator, such that the distal-agitator unscrews itself from tight engagements with its surroundings and automatically retracts in a proximal direction into the flexible tube.