Patent ID: 9559624
Date: 2017-01-31
CPC Classifications: A61B,B01F,H02K,H02P

Claim:
1. A control assembly for a motorized surgical tool that has a motor with a rotor and windings that actuates an attachment for performing a medical/surgical task, said control assembly comprising: a module formed from structural members, wherein at least one structural member is formed from non-magnetic material; a trigger sensor disposed in said module responsive to magnetic fields for monitoring a magnetic field emitted by a trigger switch to which a magnet is attached, wherein the sensed magnetic field varies as a function of the actuation of the trigger switch, said trigger sensor further configured to generate variable trigger signals as a function of the sensed magnetic field; a magnetically sensitive rotor position sensor assembly disposed in said module adjacent the at least one structural member formed from non-magnetic material, said rotor position sensor assembly configured to monitor the rotational position of the motor rotor by monitoring the magnetic fields emitted by the rotor and output analog rotor position signals based on the rotational position of the motor rotor; and a control circuit disposed in said module configured to receive the trigger signals from said trigger sensor and the rotor position signals from said rotor position sensor assembly, said control circuit including: