SURGICAL TOOL FOR REAMING THE DIAPHYSEAL CANAL OF LONG BONES

摘要

The invention relates to a surgical tool (10) for reaming the diaphyseal canal of long bones, in particular of the femur, humerus, or tibia, in order to insert an intramedullary rod. The modular reaming head includes: a central core (60) and a peripheral bushing (24) that is coaxial to said central core (60) and connected via a plurality of vanes (41a-41e) connecting a front surface (12) of the tool (10) to a rear surface (11) of the tool (10), and teeth (26a-26e) on the outer surface of said peripheral bushing (24). The openings allow material to pass toward the rear when the tool advances within the diaphyseal canal, minimizing pressure and friction, resulting in a positive effect on the rate of clinical complications. The tool is preferably made using the metal injection molding (MIM) technique in order to reduce production costs and enable the one-time use thereof. The reaming head of the invention can be perfectly combined with composite or metal drive shafts.

主权项

1. A surgical tool for reaming the diaphyseal canal of long bones, comprising: a central core et and a peripheral bushing that is coaxial to said central core and connected via a plurality of vanes defining a plurality of axial openings connecting a front surface of the tool to a rear surface of the tool, and teeth on the outer surface of said peripheral bushing.