METHODS, DEVICES AND SYSTEMS FOR SLOW ROTATION OF DRIVE SHAFT DRIVEN ATHERECTOMY SYSTEMS

摘要

The present system is directed in various embodiments to methods, devices and systems for rotational atherectomy procedures. More specifically, embodiments comprise a rotational driver with rotational drive shaft and abrasive element attached thereto, the rotational driver being controlled by the rotational controller to rotate at unsustained low rotational speeds and/or rotational direction.

主权项

1. A rotational atherectomy system, comprising:
a rotational driver capable of driving rotation in first and second rotational directions; a drive shaft operationally connected with the rotational driver and comprising wound wire filars and arranged to spin-to-open when rotated in a first rotational direction and spin-to-close when rotated in the second rotational direction that is opposite the first rotational direction; a rotational speed limiter in operative connection with the rotational driver, wherein rotational speeds are limited to less than 5,000 rpm; and a rotational controller in operative connection with the rotational driver and rotational speed limiter, wherein the rotational controller controls the rotational driver's rotational direction and/or speed in a non-sustained mode.