POWERED SURGICAL TOOL SYSTEM WITH HANDPIECE HAVING VARIABLE SPEED MOTOR, CAPABLE OF CUSTOMIZING CURRENT CONSUMPTION OF HANDPIECE MOTOR DEPENDING ON SPEED OF HANDPIECE

PROBLEM TO BE SOLVED: To provide a powered surgical tool system for powered surgical handpieces that facilitates the use of tools having different power and control signal requirements and that allows the individual tools to be used with different combinations of accessory units.SOLUTION: The powered surgical handpieces 32, 33 includes a motor to drive attachments 34, 35, a switch to issue control signals and a memory for storing data on the motor. A control table adjusts the motor speed based on control signals, prevents the motor from operating beyond the maximum speed stored in the memory, and calculates the maximum allowed current consumed by the motor based on the data in the memory showing the maximum allowable motor current allowed for the motor speed as well as individual instrumental speeds. If a comparison between current consumption by the motor and maximum allowed current shows that the motor current consumption is more than the maximum allowed current, energization signals supplied to the motor is adjusted.