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:
Mar. 09, 1993
Filed:
Jan. 13, 1992
Edward J Pannek, Jr, Oceanside, CA (US);
InterVentional Technologies, Inc., San Diego, CA (US);
Abstract
A rotationally expandable atherectomy cutter assembly for cutting plaque from a stenosis in an artery includes a plurality of radially separated and axially aligned blade elements. The distal ends of each blade element are fixably connected to a hub and the proximal ends of each blade element slidably engage helical slots formed in a distally flared extension tube of the assembly. The extension tube is connectable to a rotatable catheter. The helical slots are oriented in a first direction such that contact of the cutter assembly with the plaque of the stenosis, in conjunction with a second direction rotation of the catheter causes the proximal ends of the blade assembly to slide distally along the helical slots thereby expanding the cutting radius of the cutter assembly.