Patent ID: 9603675
Date: 2017-03-28
CPC Classifications: A61B,A61C

Claim:
1. A medical or dental treatment device, comprising: a medical or dental handpiece comprising a rotatable drive element to drive a tool that can be connected to the handpiece, a rotational speed measurement device which is designed to generate a variable electric rotational speed measurement signal assigned to the rotational speed of the drive element, a lighting device that can be supplied with electric power for emitting radiation onto a treatment site, and at least one shared electric line, which is configured (1) to transmit electric power to the lighting device and (2) to transmit the rotational speed measurement signal of the rotational speed measurement device, and an electric power source configured to supply a substantially constant electric signal to the lighting device, wherein the electric power source comprises a constant current source or a constant voltage source configured to pick up an electric mixed signal which comprises the variable electric rotational speed measurement signal generated by the rotational speed measurement device and assigned to the rotational speed of the drive element, the electric power source being configured to correct the variable electric rotational speed measurement signal through a variable electric correction signal such that the substantially constant electric signal for supplying power to the lighting device is provided.