Cardiovascular Systems, Inc.

Michael X Yang

Albert J Shih

Robert Edward Kohler

Yihao Zheng

Rohit Deokar

Brad J Martinsen

The present system is directed in various embodiments to rotational atherectomy systems and methods generally. More specifically, a method for methodically softening and disrupting calcification within the wall of a biological conduit or lumen. This result is achieved by use of at least one eccentric head that, during high-speed rotation within the exemplary lumen, produces a combination of a low-frequency orbital motion comprising a force that is exerted against the lumen wall, with concomitant deflection of same, and a high-frequency pulsatile frequency, also with concomitant exertion of force against the lumen wall and deflection of same. These force-driven deflections produce shockwaves within the layers of the exemplary artery's wall layers, resulting in systematic disruptions of any calcification within the intimal and/or medial layers of the subject artery. In addition, any calcification within the occlusion is also softened and disrupted, increasing compliance of the vessel and/or lesion.

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Maple Grove, MN, United States of America

Michael X Yang