RONAF

Robotergestützte Navigation beim Fräsen an der lateralen Schädelbasis (deutsch)
Robot-based Navigation for Milling at the Lateral Skull Base (english)


Abstract

The goal of the RONAF project is the development and examination of a system for navigation on the lateral skull base. This system's purpose is the interactive supervision of a surgical robot during interventions.
Modular multilevel navigation and control procedures are being used. The operation is planned on a preoperatively acquired 3D dataset (e.g. CT or MRT). The robot and its attached tool are moved relative to this dataset. For local navigation and control, the robot is given intraoperative sensory feedback (force/torque readings, temperature, ultrasound scans, electrophysiological excitation, infrared tracking system, ...). Automated evaluation of this data guarantees protection of vital structures.

Robot milling system A volume milled into a human skull with the implant inserted

The project received funding from the DFG (Deutsche Forschungsgemeinschaft) within the "SPP 1124: Medizinische Navigation und Robotik" during 2002-2008.

Applications

Applications for lateral skull base milling that are examined with the RONAF system are:

Interventions of this kind demand extreme precision (with tolerances well below one millimeter) in spite of the high force required to remove larger quantities of bone, a combination that is very straining for a surgeon.
The development of the proposed system would thus represent a great improvement in processing quality. Moreover, rising case numbers coupled with rising demand for implantable hearing aids can be expected, making the development of such systems all the more important.

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