Design and development of interlock mechanism based bio-compatible, user-friendly and cost-effective elbow disarticulation prosthesis

Students of Indian Institute of Technology, Guwahati, Mrutyunjay Maharana and Bhabani Shankar Nayak won the award for research work of Anti-Pesticide Dermal Gel. They carried their project work under the guidance of Dr Sisir Kumar Nayak.










The upper limb amputation is a serious problem for human as it causes hindrance to various daily activities. Especially for the elbow amputation, it causes severe damage to the movement of the hand for a different common purpose. The available prosthetic elbow and disarticulation prosthesis are very costly and cannot be afforded by the common and economical backward people in India. By realizing the extreme requirement of elbow amputee people’s usability and affordability, the design and development are carried out for interlock mechanism-based bio-compatible, user-friendly and cost-effective elbow disarticulation prosthesis. There is no complicated electronics and motorized actuation involved therefore it makes this design simple. This design incorporates the internal slot mechanism which will provide an adequate motion of the artificial hand connected to the elbow joint. The joint is developed mechanically which helps the prosthesis to bring back sound gait of elbow and hand similar to the normal elbow. The design is very compact and not exposed outside of the hand so that normal clothing for the patient is not hampered. The design of an elbow joint incorporates a simple machining and manufacturing process for easy fabricated. Most importantly, the cost of the prosthetic joint is around Rs.1500-2000/unit by machining of a single unit. However, the cost can be further reduced by mass production. Since the innovation is focused on the mechanical linkage based low-cost prosthesis, this innovation will certainly benefit the elbow amputee people to bring back their normal hand gait cycle. Commercialization of this innovation is going to serve the majority of the elbow amputees. As the development is specified for a very unique group of specially-abled people, the implementation of this will have a positive impact on society.

The Hon’ble Vice President of India, Shri M. Venkaiah Naidu awarded the Gandhian Young Technological Innovation (GYTI) Award to Mrutyunjay Maharana and Bhabani Shankar Nayak, Indian Institute of Technology, Guwahati at the GYTI 2019 Awards function held at Vigyan Bhawan, New Delhi on July 06, 2019.

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