DRILL FOR MAKING BORE HOLES IN BONE TISSUE

摘要

The invention relates to a drill for making a bore hole in bone tissue. The inventive drill comprises a retaining part and a drill mount which is detachably connected to said retaining part via a coupling device. The invention is characterized in that the coupling device has a shaft arranged on one of two parts, and has a sleeve with a bore hole, said bore hole being complementary to the shaft, arranged on the other part. The shaft can be inserted into said bore hole. In addition, the inventive drill has a safety device provided for preventing a relative movement between the retaining part and the drill mount. Once assembled, the shaft engages inside the bore hole and the drill mount is secured on the retaining part. The retaining part and the drill mount each have a coolant bore hole provided for delivering a coolant, whereby the coolant bore hole of the one part has an opening in the bore hole of the sleeve, and the coolant bore hole of the other part has an opening in the area of the respective section of the shaft which is accommodated in the sleeve in a coupled state such that a coolant connection is produced for delivering coolant from the retaining part to the drill mount.