Patents by Inventor Cassandra A. Piippo Svendsen

Cassandra A. Piippo Svendsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Atherectomy device, system and method having a bi-directional distal expandable ablation element
    Patent number: 8795304
    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.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: August 5, 2014
    Assignee: Cardiovascular Systems, Inc.
    Inventors: Cassandra A. Piippo Svendsen, Daniel J. Lee, Rachel E. DeSmidt, Jesse C. Darley
  • ATHERECTOMY DEVICE, SYSTEM AND METHOD HAVING A BI-DIRECTIONAL DISTAL EXPANDABLE ABLATION ELEMENT
    Publication number: 20110144671
    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.
    Type: Application
    Filed: June 17, 2010
    Publication date: June 16, 2011
    Applicant: CARDIOVASCULAR SYSTEMS, INC.
    Inventors: Cassandra A. Piippo Svendsen, Daniel J. Lee, Rachel E. DeSmidt, Jesse C. Darley