Device with a rotationally-driven surgical instrument

A device comprising:

• a rotationally driven surgical instrument having a hand-held element;
• interchangeable cutting and milling inserts;
• a mount rotatably installed in said hand-held element for reception of said interchangeable cutting and milling inserts;
• a driving motor for driving the mount receiving the cutting and milling inserts, and;
• a control unit for controlling the driving motor including means for setting a rotational speed of the motor and for preselecting a rotational speed range and also an indicator for display of the rotational speed set in each case;
• said control unit comprising a non-volatile write-read memory for digital storage of user-specific rotational speed data,
• a code carrier remote from said cutting and milling inserts and removable from said control unit, said code carrier carrying a reprogrammable encoding corresponding to speed data in said write-read memory, said encoding on said code carrier being reprogrammable by a user to set said surgical instrument to a user selected rotational speed range, and also
• a means for coding/decoding said encoding on said code carrier, said means for coding/decoding selectively receiving said code carrier for reading said encoding.