The structure of the SRT hand mirror rehabilitation trainer (upgraded version) is ergonomic, and the trainer adopts a semi-open package design. Passive training helps maintain and expand the patient's range of motion, relieve and control increased muscle tone, and prevent joint contractures. Mirror training uses visual feedback therapy. Through the synchronous training of the unaffected and affected hands, it can stimulate the mirror neurons of the brain and directly improve symptoms such as finger spasm and weakness. Wrist lift training uses electrical stimulation therapy to extend the training range from the fingers to the wrist. The three major modes help train the reflex brain nerves and blood vessels, enhance the effect of conservative treatment after brain injury or nerve injury, shorten the rehabilitation period after surgery, and help achieve the goals of enhancing patients' confidence in rehabilitation, restoring the function of the affected limb, and improving the quality of life.

Hand function is an important part of activities of daily living. Due to hand dysfunction, patients are limited in activities of daily living and rely on the help of others, which greatly affects their physical and mental health. Therefore, it is particularly important to improve the patient's hand function.

Taking stroke as an example, patients with hand dysfunction often have flexion contractures, with dominant hand flexor tension and difficulty in extending the interphalangeal and metacarpophalangeal joints. Therefore, spasticity is the main problem of early hand function training, and the rehabilitation treatment mainly adopts the method of passively suppressing spasticity.

At present, when clinical therapists carry out rehabilitation training for patients, they often conduct one-to-one training with patients hand in hand. This training method needs to go to a professional rehabilitation institution, but some patients in remote areas lack medical resources around them. Moreover, the therapeutic effect is relatively dependent on the therapist, and the cost is high; secondly, it is difficult to mobilize the enthusiasm of patients for training with a single training method, and patients often receive treatment passively, and the degree of active participation in training is not high.

The hand mirror rehabilitation trainer helps patients reduce the requirements for the rehabilitation environment, so that patients can carry out scientific rehabilitation training at home, and passive training helps to expand the range of motion of joints and improve muscle spasm. The innovative mirror therapy uses the unaffected hand to drive the movement of the affected hand to achieve synchronization of vision and movement. Activate mirror neurons to promote brain function remodeling. Functional electrical stimulation therapy stimulates muscles and afferent nerves, expands the range of motion, and accelerates functional recovery. The efficient operation mode helps patients to complete the training easily, and has excellent training effect while being extremely cost-effective.