The design solution is a passive training model of the human arm that uses mechanically relevant materials for soft tissue and provides feedback on applied force through a computer interface. A decision matrix process was used to select each component. The bone structures were 3D printed with custom made attachment points for the load cells and IMU using Vero from Stratasys, a photoelastic polymer. The materials for muscle, tendons and ligaments will be composed of a balloon wrapped mesh, strands of nylon twine aligned in parallel and monofilament fishing line, respectively. Attached to the bone are 6 load cells to measure load experienced by soft tissue structures, an IMU to measure joint angle, and a microcontroller. These devices will connect to Unity3D in real time to provide required feedback. The software will alert the user via audio alerts and visual cues when manipulations could harm or further injure a patient. The entire model will be encased in a skin like material and a filler foam for the device to have a realistic feel.
Upper Extremity Medical Training System
