Apparatus for use in surgery

A targeting device suitable for use in removing a femoral implant from the surrounding tissue, wherein the device comprises:

• an anterior guide member, which comprises a first elongate body provided with a first angled channel therein, running from an entrance at the proximal end of the guide member to an exit at the distal end of the guide member, and where the first elongate body has a first contact element at its distal end for contacting the anterior surface of the shoulder of the femoral implant and for distancing the exit from the anterior surface of the shoulder of the implant,
• a posterior guide member, which comprises a second elongate body provided with a second angled channel therein, running from an entrance at the proximal end of the guide member to an exit at the distal end of the guide member, and where the second elongate body has a second contact element at its distal end for contacting the posterior surface of the shoulder of the implant and for distancing the exit from the posterior surface of the shoulder of the implant,
• an engagement member for locating and engaging the targeting device on the shoulder of the implant, which comprises a third elongate body with an engagement protrusion at its distal end, whereby the engagement protrusion can be received in a recess portion on the shoulder of the implant, and whereby the third elongate body can be located between and aligned with the first elongate body and the second elongate body, such that the elongate axes of the first, second and third elongate bodies are substantially aligned, and with the first and second angled channels converging in the direction of the distal end,
• a first pair of parallel connector rails, wherein each connector rail can slideably connect the anterior guide member and the posterior guide member via the engagement member, with the connector rails being received in connection bores in the anterior guide member and the posterior guide member,
• an adjustment system which can adjust the distance between the first elongate body and the third elongate body, so as to move the anterior guide member between a release position and a holding position, and which can adjust the distance between the second elongate body and the third elongate body, so to move the posterior guide member between a release position and a holding position;
• wherein when the anterior guide member and the posterior guide member are connected by the first pair of connector rails, via the engagement member, the elongate axes of the elongate bodies are substantially aligned and the angled channels converge in the direction of the distal end, with the convergence angle of the angled channels being in the range of from 2 to 6 degrees, such as from 2 to 5 degrees,
• such that the engagement protrusion can be located in a recess portion on the shoulder of the implant, with the anterior guide member and the posterior guide member in their release positions, and then the adjustment system can be used to move the anterior guide member towards its holding position until the first contact element contacts the shoulder of the implant, with the exit of the first angled channel lying spaced from the anterior surface of the implant, and to move the posterior guide member towards its holding position until the second contact element contacts the shoulder of the implant, with the exit of the second angled channel lying spaced from the posterior surface of the implant.