The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 1988
Filed:
Feb. 13, 1985
Applicant:
Inventor:
John Nash, Downingtown, PA (US);
Assignee:
Intravascular Surgical Instruments, Inc., Frazer, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
128305 ; 604 22 ;
Abstract
A recanalization catheter comprising a very small diameter elongated, flexible tubular member having a distal end at which a tool is mounted for high speed rotation. A flexible drive assembly is located within the tubular member and is connected to the tool. The drive assembly includes a flexible drive shaft mounted within plural spaced bearings to enable the shaft to be rotated at a very high rate of speed from a remotely located motor. The bearings serve to keep the drive shaft centered even as the catheter is bent through a sharp radius of curvature, while also preventing the shaft from going into critical whirl.