Multi helical broaching punch for osteotomy creation
A broaching punch for creating osteotomies that has a tip with helical broaching features extending along the outer surface to a tip. The helical broaching features are each formed by an edge that extends outwardly from and around the body of the tip and characterized by a predetermined angle, depth, spacing, and arrangement of various dimensional combinations that slowly and progressively broaching more and more bone material away during insertion, thereby slowly growing the diameter of the osteotomy until it reaches the desired diameter. Tapping features may be included proximately to the broaching features to allow for a newly formed hole to be tapped with threads.
1 . A broaching device, comprising:
a tip having a body with an outer surface; and
a plurality of helical broaching features each of which extends continuously around the outer surface of the body and includes a cutting edge positioned on a distal surface thereof and terminating at a distal point, wherein the plurality of broaching features is configured to exert an axial force in the direction of the point.
2 . The broaching device of claim 1 , wherein the plurality of helical broaching features is selected from the group consisting of two helical broaching features, three helical broaching features, and four helical broaching features.
3 . The broaching device of claim 1 , wherein the plurality of helical broaching features extend helically around the outer surface of the body in a pitch that is continuous along the body.
4 . The broaching device of claim 1 , wherein the plurality of helical broaching features extend helically around the outer surface of the body in a pitch that varies along the body.
5 . The broaching device of claim 1 , wherein the body includes a first portion that extends cylindrically and a second portion that tapers.
6 . The broaching device of claim 1 , further comprising a set of tapping features positioned adjacently to the plurality of helical broaching features and on an opposite side of the plurality of helical broaching features from the distal point.