Pneumatic Damping Prosthetic Leg For Above-knee Amputees

Students of MES College of Engineering, Kuttipuram, Muhammed Janish and Abhijitnath won the award for a Pneumatic Damping Prosthetic Leg For Above-knee Amputees. They carried her project work under the guidance of Prof. Padmakumar K.

The prime focus of the project is to design cost-effective feedback based on the prosthetic leg for above-knee amputees. Currently, the majority of amputees in India depend on functionally low mechanical legs like Uni-axial knee, ReMotion knee, Jaipur limb, etc. As the cost of a high functional feedback-based leg is around 70000 dollars, therefore, mechanical prosthesis like Uniaxial Knee, ReMotion limb restricts to locks which transfer the load to the ground. The major default of the currently available prosthetics lies in the restricted application, where the patient cannot use it in a bent position when the load is acting normal to the ground, as the lock won’t be working and the patient will stumble.

Also, mechanical legs won’t give any walking assistance as they only provided support & drains more energy. A proportional solenoid valve has been incorporated to control the pneumatic damping system in a mechanical knee. Force sensor at the foot detects the pressure applied by the amputee and adjust the damping resistance at the knee which enables the proposed device to lock the knee joint at any angle and position correspondingly so the amputee can transfer the load to the ground even in a bent position of the leg. Compressed air inside the pistons absorb shock during the stance phase of walking and provide walking assistance during starting of the swing phase of walking and all these applications draw less energy.

The Hon’ble Vice President of India, Shri M. Venkaiah Naidu awarded the Gandhian Young Technological Innovation (GYTI) Award to Muhammed Janish and Abhijitnath MES College of Engineering, Kuttipuram at the GYTI 2019 Awards function held at Vigyan Bhawan, New Delhi on July 06, 2019.

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