Patent ID: 8936470
Filing Date: 2015-01-20
Classification: A61B,A61C

Abstract:
1. A device for quickly stopping a medical or dental drilling tool comprising: a drilling tool with a connection end for connecting to a drive, an abrasive working end for removing material and a body extending between the connection end and the working end having a longitudinal extension extending along a longitudinal axis of the drilling tool, wherein the drilling tool has a hollow outer shell in which a probe pre-tensioned by a spring element is held, wherein the probe is movable along the longitudinal axis relative to the outer shell such that at least a part of the probe is movable out of the outer shell through an opening in the outer shell at the working end, wherein the probe is designed as an elongated pin extending along the longitudinal axis having a first end facing the connection end and a second end facing the working end, and an electromagnetic sensor for detecting a relative movement between the outer shell and the probe, wherein the first end of the probe facing the connection end is held in the interior of the hollow outer shell of the drilling tool, wherein the electromagnetic sensor is arranged along the longitudinal extension of the body of the drilling tool, and wherein the drilling tool has a channel for a treatment fluid extending along the longitudinal axis.