Indian Institute researchers technology Developed a prosthetic leg specially designed for Indian conditions in Guwahati. It is suitable for uneven terrain and supports Indian needs like cross legged sitting and deep squatting. It is also adjustable for different age groups and multiple stages of prosthesis use.
This research was funded by the Union Ministry of education and Department of Biotechnology. The researchers collaborated with 151 Army Base Hospitals. prosthesis development India Faces many challenges. Highly functional mobility for people with disabilities requires equipment with advanced features that are spacious and cannot be afforded by many. In addition, there are several functional limitations of the affordable prosthetics available in the market. The Indian lifestyle and uneven terrain requires prosthetics with specific specifications for India, which are not widely available in the market.
A team led by Professor S Kanagaraj, Department of Mechanical Engineering, IIT Guwahati set out to tackle these issues. A prototype of their model developed by this research team is currently undergoing testing. Highlighting the major areas of his research, Prof. s. Kanagaraj said, “The knee joint developed by our team has a spring assisted deep squat mechanism, which helps in using the Indian toilet system more comfortably; The knee rotation mechanism helps with sitting cross-legged; The locking mechanism helps reduce patients’ fear of falling when walking in unknown terrain; Adjustable link length in the knee helps with either greater stability or easier flexing depending on the age and need of the patients. Overall, the knee joint is designed to meet the Indian lifestyle which other products fail to meet.
Researchers identified the following needs and developed novel solutions:
Requirement 1: Market products developed with Western technology ignore Indian movement needs, such as cross-legged sitting, deep squatting for toilet use and exercise postures in yoga that can be used for rehabilitation.
Solution: An advanced knee rotation mechanism has been developed to facilitate cross-legged sitting – thereby vastly improving the range of traditional prosthetic knees. The Deep Squat mechanism helps prevent motion arrest while standing and reduces metabolic energy costs.
Requirement 2: Many stages of prosthesis use require additional stability for the patient. During the initial training of a disabled person, it is needed to address safety concerns and fear of falling. Once a disabled person gets used to his foot, it becomes difficult to walk on uneven terrain, sloping areas and stairs.
Solution: Knee-locking mechanism is provided which can be activated and deactivated by the amps as they face the difficult conditions described above.
Requirement 3: Prosthesis leg requirements vary according to the remaining length of the patient’s leg. In addition, depending on the age of the patient, greater stability is needed for older patients, who are at greater risk of falls.
Solution: Link length adjustment and prosthesis alignment adjuster mechanisms are also provided for customization as per patient requirement.
Requirement 4: Tough terrain significantly hinders the functioning of the traditional ankle joint. In addition, during physical activity, dynamic balance is required to prevent the risk of falls.
Solution: Impact load on hard surfaces is reduced, toe force is maximized and balance is ensured when walking on difficult terrain.
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