ATHERECTOMY DEVICE, SYSTEM AND METHOD HAVING A BI-DIRECTIONAL DISTAL EXPANDABLE ABLATION ELEMENT

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 se...

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Bibliographic Details
Main Authors LEE DANIEL J, PIIPPO SVENDSEN CASSANDRA A, DESMIDT RACHEL E, DARLEY JESSE C
Format Patent
LanguageEnglish
Published 16.06.2011
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary: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.
Bibliography:Application Number: US20100817354