Potential optimization
cognitive and motor function, spasticity
MINOR
Although the RobExReha system was generally perceived as inventive and usable, possibilities to improve the system could be identified:
The positioning of the LBR should be adjusted to better accommodate the targeted range of motion and avoid conflicts with the axis boundaries of the LBR arm.Another solution for the weighing process for robotic calibration should be considered for the use in neurological patients, as pathological muscle tone deviations (e.g., spasticity) may be present. For example, an estimation derived from anthropometric tables combined with a feedforward model approach could resolve the problem [For future scenarios, the chosen setup with the LBR arm would allow the inclusion of a resistance mode to enlarge the applicability. As such, patients with minor impairments to those with very limited arm function could use the device. The integration of a functional hand module would further add functionality to the robot and expand the gaming scenarios.A second HoloLens for the supervising therapist would ease the support of the patient and opens possibilities of manipulating the holographic cues interactively.Further gaming scenarios adapted to different levels of cognitive and motor function would enlarge the applicability of the system (e.g., simpler, and more complex gaming scenarios to motivate patients with different abilities).The system stability should be increased to ensure good usability in clinical context.