Patent ID: 11864789
Assignee: THE SPECTRANETICS CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 3:
4. A device for removing an implanted object from a body vessel, the device comprising:
an outer sheath;
an inner sheath disposed within the outer sheath, the inner sheath comprising a cutting tip having a cutting surface;
a cutting tip drive mechanism comprising a motor configured to rotate the cutting tip, wherein, upon actuation of the motor, the cutting tip rotates and translates longitudinally;
a sensor, wherein the sensor provides a position signal indicative of a home position for the cutting tip drive mechanism; and
a controller comprising a non-transitory computer-readable medium comprising instructions that, when executed, actuate the motor and calibrate a position of the motor based at least in part on the position signal received from the sensor while the motor is actuated,
wherein the cutting tip drive mechanism further comprises a current sensor, wherein the current sensor produces a current signal indicative of the motor exceeding a predetermined current threshold.