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

Claim 6:
7. 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; and

a base unit having a motor and a drive spindle configured to transfer torque developed by the motor to the cutting device;
wherein the cutting device is further defined as a cutting disc formed to have a plurality of equangularly spaced apart openings that are centered around and spaced outwardly from the center of the cutting disc that function to couple the cutting disc with the drive spindle, and wherein the equangularly spaced apart openings are configured to engage complimentary teeth on the drive spindle of the base unit so that rotation of the drive spindle results in the like rotation of the cutting device.