Surgery – Instruments – Cutting – puncturing or piercing
Patent
1992-06-08
1995-07-11
Rimell, Sam
Surgery
Instruments
Cutting, puncturing or piercing
606167, 606171, A61B 1732
Patent
active
054316731
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 reciprocating, and rotating or oscillating 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 extends 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.
REFERENCES:
patent: 4646738 (1987-03-01), Trott
patent: 4669469 (1987-06-01), Gifford, III et al.
patent: 4919133 (1990-04-01), Chiang
patent: 5092873 (1992-03-01), Simpson et al.
Brinson Gail L.
Summers David P.
American BioMed, Inc.
Rimell Sam
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