Distal atherectomy catheter

Details Distal atherectomy catheter Distal atherectomy catheter

1995-06-07

1998-03-17

Rimell, Sam

Surgery

Instruments

Cutting, puncturing or piercing

606159, 606171, A61B 1732

Patent

active

057281297

ABSTRACT:
A distal atherectomy catheter is disclosed for removing obstructions, plaque, stenosis, occlusions, or the like from an artery or coronary vessel. The catheter comprises a flexible, hollow catheter tube. A cutting element is located within a cylindrical housing mounted at the distal end of the catheter tube. The cutting element is connected to a hollow, flexible drive shaft concentrically located within the catheter tube. The cutting element housing includes a side opening window or port providing access to the interior of the housing. An idler shaft journaled about the drive shaft provides a non-rotating surface adjacent the cutting element. An annular return passage is defined between the catheter tube and the flexible drive shaft providing a discharge passage communicating with external aspirating means for collection of cuttings removed by the cutting element from the artery or coronary vessel. A guide wire may extend through the catheter tube and cutting element for guiding the catheter to the occluded site in a vessel. The drive cable is connected to a drive motor housed within a handle housing. The catheter tube and cutter housing are enclosed within a sheath extending from the distal end of the catheter to the handle housing.

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