Patent ID: 11896238
Assignee: STRYKER CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A  B

Claim 15:
16. A system for converting bone stock into bone chips, said system comprising:
a mill head comprising:
a housing having an inlet opening into which bone stock is introduced into the housing and an outlet opening spaced away from the inlet opening;
a cutting device mounted in the housing between the inlet opening and the outlet opening; and
a plunger moveably mounted in the inlet opening to push bone stock against the cutting device to convert bone stock into bone chips and the discharge of bone chips through the outlet opening;

a base unit having a motor and a drive spindle configured to transfer torque developed by the motor to the cutting device; and
a locking assembly for releasably holding the housing of the mill head to the base unit;
wherein pedestal teeth on the base unit seat in notches in the mill head, wherein as a consequence of the pedestal teeth seating in the mill head notches, the pedestal teeth inhibit the transfer of rotational movement of the cutting device to the rest of the mill and thus perform rotation-stopping effect.