Abstract: A hollow milling tool (1) for the production of substantially hollow cylindrical depressions in human or animal tissue, in particular for the production of tissue pillars which are removed at a harvest location, transported to a defect location and implanted there, has teeth (2) for the ablation of tissue which are arranged at the distal end of the milling tool at the end side. Furthermore, the milling tool has passages for transporting a cooling fluid to a cooling region of the milling tool lying near the distal end during the ablation of tissue.

Abstract: The apparatus for the production of endochondral or osteochondral bores comprises a combination of a substantially hollow cylindrical sleeve (10), of which one end is formed as a circular cutting edge (11), with a flat borer (20) which is rotatably and axially displaceably arranged in the sleeve (10). Through pressing in of the cutting edge (11) into the tissue, advantageously only into the cartilage tissue, a tissue column is punched out which then is cut away and removed through screwing in of the flat borer (20). In this the boring is done up to the depth of the cutting edge (11) or deeper.