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US 4,020,847 AGranted
Rotating cutter catheter
OwnerWilliam T. Clark, IIIinventor
Life of this patent
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Abstract
An elongate blunt-ended hollow tube is affixed on the distal end of a flexible catheter. A cutting edge along one side of a lengthwise slot in the tube wall cuts off irregularities from the inside of a vessel and feeds them into the hollow interior of the tube as the catheter is rotated.
Claims2
A catheter comprising
- a flexible shaft,
- an elongate hollow tube formed by a concavo-convex wall having one end attached to said shaft and the other end being blunt,
- said tube having at least one lengthwise slot in the wall thereof and a cutting edge along one side of said slot,
- said tube being of circular cross-section, said cutting edge being disposed not outside of the circle of the tube cross section and being an edge of the tube wall.
1 more element
Dependencies are inferred from the claim text.