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Applying TAFEI method to orthopaedic robot system's requirements analysis

Medical robot can enhance surgery through improved precision, stability, and dexterity, which has brought great benefits for patients. However, it yields a series of disadvantages to the surgeons, such as the bad eye-hand coordination, the ill-designed workstations etc. All these disadvantages can cause human error during operations, and human error is considered to be the major contributing factor of medical accidents. To improve the safety of the orthopaedic robot system, the task analysis for human error identification (TAFEI) method is used to predict the human error during the requirements analysis stage. By analyzing the potential undesired operations, which will influence the usability of the system, the protection measures are proposed to reduce the errors of the applied system. It is concluded that this method is feasible during the requirements analysis stage of the design.