Patent ID: 11877769
Assignee: CARDIOVASCULAR SYSTEMS, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. A medical device system comprising:
a rotational atherectomy device comprising an elongated flexible drive shaft and an abrasive section disposed at or near a distal end of the drive shaft, the drive shaft rotationally driven at a proximal end by an electric motor;
a control unit operationally connected with the electric motor, the control unit comprising a memory, a processor operationally connected with the memory, and a current sensor operationally connected with the memory and/or processor and configured to sense the current generated by the electric motor;
a display connected with the control unit,
wherein the processor is configured to issue instructions to generate, in real time, individual plots of the sensed current vs time, wherein each one of a plurality of the generated individual plots of the sensed current vs time are overlaid and displayed on the display in real time for each of a plurality of rotational atherectomy treatment passes comprising the abrasive section traversing a lesion, and
wherein the processor is further configured to execute instructions to determine the progress of the treatment based on the sensed motor current and to display the determined progress of the treatment on the display.