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:
Aug. 05, 2014
Filed:
Jun. 17, 2010
Cassandra A. Piippo Svendsen, Hugo, MN (US);
Daniel J. Lee, Monticello, MN (US);
Rachel E. Desmidt, Madison, WI (US);
Jesse C. Darley, Madison, WI (US);
Cassandra A. Piippo Svendsen, Hugo, MN (US);
Daniel J. Lee, Monticello, MN (US);
Rachel E. DeSmidt, Madison, WI (US);
Jesse C. Darley, Madison, WI (US);
Cardiovascular Systems, Inc., St. Paul, MN (US);
Abstract
The invention provides a rotational atherectomy system, device and method comprising a bi-directional drive shaft with a flexible ablation element disposed at the distal end of the drive shaft. The flexible ablation element comprises a first retracted position for insertion into vasculature and a second expanded position for ablation, i.e., cutting, sanding and/or grinding. The ablation element comprises more than one flexible finger or blade which allows changing, in certain embodiments, of curvature radius to fit inside a deployment catheter and/or enlarge to the diameter of larger lumens, up to at least 9 mm in diameter. Bi-directional rotation of the expanded ablation element allows cutting in one rotational direction and grinding and/or sanding in the opposite rotational direction.