Patent ID: 9107709
Filing Date: 2015-08-18
Classification: A61B

Abstract:
1. A targeting system for guiding a drill into at least one bore in a distal end portion of an intramedullary nail, comprising: a distal targeting arm with a first end being configured to be coupled to a proximal end of the intramedullary nail, the intramedullary nail having a nail longitudinal axis extending from the proximal end of the intramedullary nail to the distal end of the intramedullary nail, the intramedullary nail capable of being bent relative to the nail longitudinal axis during insertion into an intramedullary canal of a patient; an adjusting device coupled to a second end of the distal targeting arm, wherein the adjusting device comprises an adjusting element coupled to the targeting arm and a nail follower operatively coupled to the adjusting element, the nail follower including first and second targeting holes each being configured to receive a sleeve assembly configured to receive the drill; wherein the adjusting element includes first and second screws which engage first and second threaded bores in the nail follower, wherein the nail follower has a follower longitudinal axis extending between the first and second targeting holes and the adjusting element has an element longitudinal axis extending parallel to the first and second screws, the follower longitudinal axis and the element longitudinal axis being perpendicular to one another in a neutral position, the first and second screws configured to be rotated in first or second directions within the threaded bores such that the follower longitudinal axis is pivoted relative to the element longitudinal axis such that positions of the first and second targeting holes are adjustable to positions other than the neutral position, so as to align targeting axes extending through the first and second targeting holes with locking axes extending through the locking holes at the distal end of the intramedullary nail when the nail longitudinal axis is bent; and wherein the adjusting element first screw includes a first thread with a first pitch and the second screw includes a second thread with a second pitch, wherein the first pitch differs from the second pitch and wherein the first and second screws are coupled by a gear system with a gear ratio of 1:1.