Cardiovascular Systems, Inc.

Other

Nicholas W Rydberg

Joseph P Higgins

Gregory H Smith

Matthew D Cambronne

Brett Ryan Johnson

Blake G Potts

Benjamin D Haselman

Preston L Grothe

Joshua J Cranston

Ric A Gould

William F Kuester, Iii

Jeffrey R Stone

Christopher M Narveson

Kraig A Karasti

A thrombectomy system is provided that, in various embodiments, a rotating impeller that may be translated within limits along a guidewire and within a catheter. The rotating impeller is, during operation, either located entirely inside or outside of the distal end of the catheter's lumen or at least partially outside of the distal end of the catheter's lumen. In some cases, the impeller may be prevented from rotating if at least partially inside the catheter's lumen. The rotating impeller may achieve a working diameter that is greater than its resting diameter.

Systems, methods and devices for removal of thrombus and/or soft plaque with asymmetric mass distribution within working region of impeller

Various embodiments of devices and systems comprising a polymer driveshaft for use in high-speed rotational medical procedures, e.g., atherectomy, are disclosed. Generally, the primary driveshaft for transferring torque and activating rotation of a tool attached thereto, e.g., an abrasive element, is constructed with at least a polymer outer and inner surface. In certain embodiments, the polymer driveshaft may comprise a metallic band for fixed attachment of a structure, e.g., an abrasive element, thereto. Various embodiments may comprise a coupler that connects a drive shaft connected with a prime mover, e.g., a turbine or electric motor, with the polymer drive shaft, the coupler comprising openings through the coupler wall to the inner diameter of the coupler to allow fluid flow to the inner diameter of the coupled polymer drive shaft.

Rotational systems comprising a polymer driveshaft

A thrombectomy system is provided that, in various embodiments, a rotating impeller that may be translated within limits along a guidewire and within a catheter. The rotating impeller is, during operation, either located entirely outside of the distal end of the catheter's lumen or at least partially outside of the distal end of the catheter's lumen, whereby rotation is prevented if the impeller is completely within the catheter's lumen.

Systems, methods and devices for removal of thrombus and/or soft plaque

An atherectomy device with an exchangeable drive shaft is disclosed, having a drive shaft gear at a distal end of the exchangeable drive shaft for meshing engagement with a prime mover gear on the output shaft of the prime mover. The exchangeable drive shaft is inserted into an opening at the distal end of the handle housing and moved axially in a proximal direction. Surface features on at least the prime mover housing and the engageable drive shaft help to align the drive shaft gear with the prime mover gear for meshing engagement.

Rotational atherectomy device with exchangeable drive shaft and meshing gears

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Oakdale, MN, United States of America

Nicholas W Rydberg