7. Design and development of sEMG Prosthetics for recovering amputation of the human hand

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Masood-ur-Rehman, Ajab Khan Kasi, Jafar Khan Kasi, Muzamil Bokhari, Muhammad Sohail


The upper limb amputation is one of the biggest human health problems that have a great psychological, social and economic effect on the life of a person. The motorized prosthetics give a better solution for amputees. Unfortunately, in developing countries such as Pakistan, the poor amputees cannot afford expensive prosthetics which is mostly developed in European and American countries. This paper reports the low-cost solution of the prosthetic limb. A simple design of prosthetic hand is reported which is developed using 3D printing technology. This prosthetic hand has five degrees of freedom in which each finger can be actuated individually. The hand is actuated using surface electromyographic (sEMG) signals from working muscles located near amputation point. This hand has capability to sense and display the temperature of anybody in contact. The main components of this prosthetic hand are the sEMG sensor, Arduino Nano Microcontroller, five servo motors, and temperature sensor. There are 5 grasping modes which enables the prosthetic hand to give different motions using single EMG signals. This hand was tested successfully for all five modes and its performance was good in picking and dropping objects from one box to another.

Keywords: 3D printing; Amputation; EMG signal; Polylactic Acid; Upper limb prosthesis


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