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

Claim 0:
1. A mill head for converting bone stock into bone chips and for use with a base unit, said mill head comprising:
a housing having:
an inlet opening into which bone stock is introduced into said housing;
an outlet opening spaced away from said inlet opening; and
a cutting device mounted in said housing between said inlet opening and said outlet opening; and

a plunger moveably mounted in said inlet opening to push bone stock against said cutting device to convert bone stock into bone chips and discharge bone chips through said outlet opening;
wherein said cutting device is further defined as a cutting disc having a plurality of cutting scallops, each scallop being monolithic with said cutting disc and each scallop defining an opening and having a scallop top surface and a scallop bottom surface which meet at a cutting edge of said scallop; and
wherein said cutting disc has a plurality of equangularly spaced apart openings that are centered around and spaced outwardly from a center of said cutting disc, with said equangularly spaced apart openings configured to engage the base unit such that rotational force from the base unit results in the like rotation of said cutting device, the equangularly spaced apart openings being configured to engage complimentary teeth on a drive spindle of the base unit.