Rehabilitation robotics specializes in designing machines, such as exoskeletons, which can be utilized to restore function in patients recovering from physical trauma. The proposed Assistive Rehabilitation Arm Orthosis (A.R.A.O.) is designed to restore function and rehabilitate patients suffering from muscular diseases as well as mild-stroke. Clinical studies have shown that task-based repetitive training can improve motor abilities and enhance functional performance in those recovering from stroke. The proposed design improves on the popular four bar linkage systems used in many modern orthoses by incorporating a dynamic feedback system that actuates elastic elements, allowing users to lift heavier objects, while still remaining portable. The dynamic feedback system incorporates force-sensing resistors in conjunction with a linear actuator to vary the tension in the tension bands. The device not only allows patients to perform day-to-day lifting tasks but also has the potential for use in rehabilitation.

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