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:
Oct. 29, 1996
Filed:
Oct. 26, 1995
Sorin Adrian, Penn Valley, PA (US);
Medelex, Inc., Penn Valley, PA (US);
Abstract
A catheter 10 according to the invention includes an elongated shaft 14 defining a distal end 12 and a proximal end 13. The proximal end of the shaft includes a coupling arrangement 15 for coupling to a rotary drive such as an external rotary motor. The catheter also includes a rotary-to-axial motion converter 28 coupled to the distal end of the shaft 14. The rotary-to-axial-motion converter 28 includes at least a first magnetic pole pair 22N, 22S mechanically coupled to the distal end of the shaft 14 for being rotated thereby along an arc. The motion converter also includes a nonrotating reciprocating follower 30, and at least a second magnetic pole pair 30N, 30S which is located so as to come within the magnetic influence of the first magnetic pole pair 22N, 22S during each the rotation of the shaft 14. During each rotation, the two magnetic poles attract or repel, for causing reciprocating axial motion of the reciprocating follower 30. In use, the reciprocal axial motion generates acoustic energy in a vas to comminute or ablate matter.