First System for Interactive Position Planning of Implant Components

One of the steps during the implantation of hearing aids and cochlea implants is the creation of a shallow implant bed in the thin skull bone. Correct placement of the implant is paramount but difficult to achieve preoperatively. The profile of the calotte, which can be determined through e.g. 3D imaging, is important for this task. Additionally, in a robot-based surgical operation, the final position and orientation of the implant must be known before milling starts to ensure optimal fitting. We present an algorithm which allows semi-automatic determination of this optimal placement through both the planning system and the surgeon. The computer supports the surgeons with his speed and accuracy, while the robot aids in the precise execution.