Depuy Synthes Products, Inc.

Depuy Products, Inc.

Johnson & Johnson Professional, Inc.

James A Oti

Kyle S Moore

An orthopaedic instrument includes a metallic load-bearing member and a non-metallic support structure formed integrally with the load-bearing member such that the load-bearing member is permanently attached to the non-metallic support structure. The non-metallic support structure enables the orthopaedic instrument to be lighter than an all-metal instrument while the metallic load bearing member provides wearability comparable to an all-metal instrument.

Orthopaedic instrumentation with integral load-bearing members

A surgical cutting guide is adapted to receive a cutting instrument during a surgical procedure. The surgical cutting guide comprises at least one body portion including a bone engaging surface. A plurality of separate plates are secured to the at least one body portion. At least one cutting slot is formed in the surgical cutting guide between the plurality of separate plates. The at least one cutting slot is configured to receive the cutting instrument and orient the cutting instrument for the surgical procedure. The at least one body portion is comprised of a first material, such as a plastic material, and the plurality of separate plates are comprised of a second material, such as a metal material.

Surgical cutting guide

The investment casting process utilizes an investment assembly that includes one or more vents in each casting mold. Vents facilitate the extraction of the pattern material while preventing expansion of the pattern material to the extent that mold fracture or cracking results. The vents can be formed by incorporating within the patterns of articles to be cast one or more protrusions that cause the pattern to deviate from the size and shape of the article to be cast. After assembly of one or more patterns to a riser to form a cluster, the cluster is coated with a refractory material and the refractory material is removed from the protrusions either before the refractory dries or after the refractory dries, thus producing the vents.

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Franklin, MA, United States of America

James A Oti