Surgical broach
AssigneeHowmedica, Inc.
InventorsPhilip C. Noble, Michael A. Hammer, Glen A. Kashuba, Steven J. Sawicki, Ben J. Verhoog, Richard G. Eckrote
Life of this patent
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Abstract
An improved surgical broach for preparing an intramedullary canal of a bone for receiving a prosthesis is described, wherein the broach comprises a plurality of cutting teeth having different configurations and placement upon the broach for optimizing cutting efficiency and speed for improved surgical ease-of-use while minimizing gap formation between the prosthesis and the intramedullary canal.
Claims29
A broach suitable for preparing an intramedullary canal of a bone for receiving a prosthetic stem, said broach comprising:
- (a) a longitudinal axis;
- (b) an anterior face, a posterior face, a medial face, and a lateral face generally corresponding in shape to the respective anterior, posterior, medial, and lateral faces of a prepared intramedullary canal;
- and
- (c) a plurality of cutting teeth having at least two different tooth configurations, wherein said plurality of teeth include a first set of teeth positioned on said lateral face and a second set of teeth positioned on at least one of said anterior and posterior faces, wherein each tooth of said first set of teeth has a different configuration from each tooth of said second set of teeth, and wherein said first set of teeth comprises at least one substantially pyramid-shaped tooth.
A broach suitable for preparing an intramedullary canal of a bone for receiving a prosthetic stem, said broach comprising a longitudinal axis and anterior, posterior, medial, and lateral faces, and wherein said broach further comprises a plurality of cutting teeth having at least three different tooth configurations positioned on one or more of said faces.
A broach suitable for preparing an intramedullary canal of a bone for receiving a prosthetic stem, said broach including a longitudinal axis and anterior, posterior, medial, and lateral faces, and wherein said broach further comprises:
- (a) a first plurality of teeth positioned on said lateral face, wherein at least one of said first plurality of teeth is substantially pyramid-shaped;
- (b) a second plurality of teeth positioned on said medial face, wherein at least one of said second plurality of teeth comprises a single cutting edge, a rake angle of from about -10 degrees to about 10 degrees, and a relief angle of from about 0 degrees to about 60 degrees;
- and
- (c) a third plurality of teeth positioned in parallel rows on said anterior and posterior faces at a diagonal angle relative to the longitudinal axis, wherein each of said third plurality of teeth has a rake angle of from about -10 degrees to about 10 degrees, and a relief angle of about 15 degrees to about 60 degrees.
Dependencies are inferred from the claim text.