Targeting assembly for a compression nail system

摘要

Targeting assemblies for implanting a compression nail are disclosed. An exemplary targeting assembly may include first and second arms coupled by a connecting shaft. The first and second arms may either or both be operable to rotate about a longitudinal axis defined by the connecting shaft. In some embodiments, the use of the disclosed targeting assembly allows for reduced misalignment of the alignment holes in the arms during the implant process.

主权项

1. A targeting assembly comprising:
a connecting shaft defining a longitudinal axis between proximal and distal ends, wherein the proximal end includes a proximal portion and the distal end includes a distal circumferential surface, the connecting shaft comprising a plurality of recessed areas defined in the distal circumferential surface of the connecting shaft and spaced apart circumferentially by predetermined angular displacements; a first arm having a proximal portion and a distal base portion, the distal base portion of the first arm being connected to the distal end of the connecting shaft and the proximal portion of the first arm extends alongside the connecting shaft; a second arm having a proximal portion and a distal base portion, the distal base portion of the second arm being rotatably coupled to the distal end of the connecting shaft, and the proximal portion of the second arm extends alongside the connecting shaft and being operable to rotate about the longitudinal axis of the connecting shaft and relative to the first arm when being rotatably coupled to the distal end of the connecting shaft; and a latch extending from the distal base portion of the second arm and operable to be received in one of the plurality of recessed areas defined in the distal circumferential surface of the connecting shaft for releasably and rotatably coupling the second arm to the distal end of the connecting shaft; wherein the distal base portion of the first arm is connected to the distal end of the connecting shaft proximate to the distal base portion of the second arm when rotatably coupled to the distal end of the connecting shaft; wherein the connecting shaft and the second arm are releasably coupled by the latch and the second arm is operable to rotate and lock about the longitudinal axis of the connecting shaft and relative to the first arm in increments substantially equal to the predetermined angular displacements; and wherein the first arm comprises at least one alignment hole defined through the proximal portion of the first arm, the second arm comprises at least one alignment hole defined through the proximal portion of the second arm, and the connecting shaft comprises a plurality of screw holes defined through the proximal portion of the connecting shaft; and wherein the at least one alignment holes of the first and second arms are operable to align with the plurality of screw holes defined through the proximal portion of the connecting shaft.