Rotational atherectomy device with electric motor

An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft.; When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel. 本发明公开了种冠状动脉旋磨术装置，其由电动机驱动旋转。在些设计中，该装置包含些气体涡轮驱动系统中不可用的功能，如未手柄特定模式而预设的存储在内存中的低/中/高旋转速度，计算盐水在静脉注射袋子中的剩余量以及当它变得足够低时发出相关的警