MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202641077757 A) filed by The Princepal, Mepco Schlenk Engineering College on June 24, 2026, for A Wearable Rule Based Gait Rehabilitation System Using Functional Electrical Stimulation For Post-Stroke Patients.
Inventors include Dr. D. Selvathi; A. Afrah Fathima; and W. Vinu Selva.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: Stroke is a neurological disorder that prevents the blood supply to the brain. Stroke results in long-term disability such as hemiparesis, where one side of the body becomes weak or paralyzed. In hernipaiesis, the connection between the Tibialis anterior and Soleus muscle has to be corrected to regulate the movements. The movements are shifted from a coordinated reciprocal action to an imbalanced state characterized by weakness and spastic contraction. This condition mainly affects lower limb movement which causes difficulty in walking and maintaining balance. According to the World Health Organization (WHO) stroke is a major cause of disability which affects millions of people. If the condition is not treated completely, it leads to severe complications such as permanent mobility impairment and increased risk of falls. To overcome this, a system including a wearable system which includes a waist belt and two knee bands. The waist belt setup composed of the processing unit with the ESP32 microcontroller for acquiring the data from the sensors, optocouplers are used in the circuit for safety isolation, boost converters are used to amplify the power supply sufficient to trigger the pulses, MOSFETs are used as high speed switch to activate the stimulation, switch is used to regulate the power supply initially. The knee band consists of 2 IMU sensors, one is each knee to measure the angle of the knee to calculate the angular difference and EMG sensor in affected leg to measure the muscle potential. The affected leg consists of an IMU and EMG sensor and the FES electrodes on the target muscles. Physiotherapists use a manual FES to deliver stimulation where the muscle power can be improved from zero to two and they can stand on own, but they were unable to walk or do their daily activities. During the clinical validation patients can experience a mild shock as the stimulation in their below the knee region. The system promotes remote health monitoring, particularly beneficial for underserved and rural populations. It offers a costeffective and proactive solution to improve their gait pattern and reduce the risk of falls.
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