Shoulder replacement apparatus

摘要

A surgical device for guiding a key wire during a shoulder arthroplasty procedure, including a guide for guiding a key wire during the process of drilling into a scapula, and a clamp configured to engage with the scapula neck such that a key wire located in the guide is located in a predetermined geometrical relationship with the scapula neck.

主权项

1. A surgical device for guiding a key wire for positioning of a glenoid prosthesis during a shoulder arthroplasty procedure, the surgical device comprising:
a guide configured to guide the key wire during a process of drilling into a glenoid cavity and a neck of a scapula; and a pair of arms forming a clamp configured to clamp an anterior side and a posterior side of the neck of the scapula, each arm from the pair of arms terminating at a handle portion at a first end portion of the pair of arms and a grip portion at a second end portion of the pair of arms, with the pair of arms in a detached configuration, in which each arm from the pair of arms is physically separated from each other, and the grip portion of the first arm from the pair of arms engaged with the anterior side of the neck of the scapula and the grip portion of the second arm from the pair of arms engaged with the posterior side of the neck of the scapula, the pair of arms configured to be transitioned into an attached configuration, in which the first arm and the second arm are detachably hinged together to allow relative rotation between the pair of arms about a location at which the pair of arms are detachably hinged together, with the pair of arms in the attached configuration, both the grip portion of the first arm and the grip portion of the second arm are configured to engage with the neck of the scapula such that the key wire is disposed in a predetermined geometrical relationship with the neck of the scapula when the key wire is located within the guide, the predetermined geometrical relationship being defined such that the key wire positions the glenoid prosthesis in a predefined position relative to the neck of the scapula, the guide being aligned with an axis of the surgical device and collocated with the location at which the pair of arms are detachably hinged together such that the predetermined geometrical relationship provides an offset between the key wire guided by the guide and the scapula neck in the range of −0.2 mm to 0.8 mm when the pair of arms are in the attached configuration and the grip portion of the first arm is engaged with the anterior side of the neck of the scapula and the grip portion of the second arm is engaged with the posterior side of the neck of the scapula.