Method and device for limiting the torque of dental and surgical handpieces
AssigneeW&H Dentalwerk Bürmoos GmbH
InventorsRoland Sevcik, Johann Fersterer
Life of this patent
Estimating the term…
Abstract
In a method for controlling a torque of a motor of dental and surgical handpieces to not exceed a set-point value when screwing in implant members, a motor current for applying the set-point torque is determined immediately before screwing in an implant member with the handpiece and the motor current is limited to the set point value with a motor control during subsequent screwing in of the implant member. The device for carrying out the method has a torque limiter, connectable to a tool receptacle of a handpiece, and a motor current measuring device for measuring a motor current of the motor of the handpiece.
Claims5
A method for controlling the torque of a motor of dental and surgical handpieces to not exceed a set-point value when screwing in implant members, the method comprising the steps of determining a motor current required for applying the set-point torque immediately before screwing in an implant member with the handpiece and of limiting the motor current to the set point value with a motor control during subsequent screwing of the implant member.
A device for controlling the torque of a motor of dental and surgical handpieces to not exceed a set-point value when screwing in implant members, the device comprising a torque limiter configured to be connected to a tool receptacle of a handpiece and to be adjusted to a set point torque, and comprising a motor current measuring device configured to measure a motor current of the motor of the handpiece at the set point torque, wherein the motor current measured at the set point torque is displayed or saved in a motor control of the handpiece for use in an immediately following screwing action of an implant member carried out by the handpiece.
Dependencies are inferred from the claim text.