Surgical Segment Navigator

The Surgical Segment Navigator is a computerized system for medical navigation in computer assisted surgery. It is built on the same platform as the Surgical Tool Navigator ( STN), the Surgical Microscope Navigator (SMN ) and the multi-coordinate manipulator ( MKM ) from Carl Zeiss.

SSN

The SSN is a computerized system for bone segment navigation in oral and maxillo -facial surgery. With this navigation system, bony deformities are corrected by means of a precise preoperative simulation and surgical planning. The system has been developed since 1997 at the University of Regensburg, with the support of Carl Zeiss Oberkochen. It is based on an infrared localization system, in which an infrared camera at least three infra-red transmitter, which are connected to a bone fragment, missing in the room. The SSN is used in orthognathic surgery and reconstruction of deformities of the orbital walls or the midface.

SSN

Since 2001, the SSN was developed at the University of Heidelberg, a navigation system ( markerless =) the markerless patient registration on an unenhanced CT or MRI image data set allows. In this system, a computer detects the position of the patient on the operating table using a surface scanner. The SSN compensates the patient's surface from image on the operating table with the surface image of the soft tissue envelope in the pre-operative CT or MRI image data set. This principle corresponds to the terrain contour matching of missiles. Advantage of the method is that the recognition of the patient position simplified and can be fully automatic; also a second - CT with registration markers ( such as in computer-aided surgery often required) can be dispensed with, so that the radiation exposure for the patient can be reduced.