Controller for an atherectomy device

Abstract

A rotational atherectomy system may include an elongated, flexible drive shaft having a distal end for insertion into a vasculature of a patient and having a proximal end opposite the distal end remaining outside the vasculature of the patient, an electric motor rotatably coupled to the proximal end of the drive shaft, the electric motor being capable of rotating the drive shaft, and control electronics, wherein the control electronics comprise a computer readable storage medium in communication with a processor, the computer readable storage medium having software stored thereon for monitoring and controlling the rotation of the electric motor and for monitoring and controlling delivery of saline to the drive shaft.

Description

[0001] Cross References to Related Applications

[0002] This application claims the benefit of Provisional Application Serial No. 61 / 613,137, entitled Motor Control for Orbital Atherectomy Devices, filed March 20, 2012, which is also incorporated herein in its entirety. technical field

[0003] The present invention relates to devices and methods for removing tissue from bodily passages, such as removing atherosclerotic plaque from an artery using a rotational atherectomy device. In particular, the present invention relates to controller improvements in rotary atherectomy devices having electric motors. Background technique

[0004] Atherectomy is the process of opening a blocked coronary artery or vein graft using a device on the end of a catheter to cut or scrape away atherosclerotic plaque (a buildup of fat and other material that builds up in the lining of the artery wall). deposits) non-surgical procedures. For the purposes of this application, the term "abrasive" i...

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