Desarrollo de un sistema bioelectrónico para el entrenamiento en el uso de una prótesis mioeléctrica en la rehabilitación de personas con amputación transradial.

Abstract

Adapting to a prosthesis can be difficult because these parts are foreign to the body, and the process takes time for the mind, especially the body. Electronic rehabilitation systems today have emerged as a solution or support to traditional rehabilitation. In the present work, a bioelectronic system is developed for training in using a myoelectronic prosthesis in rehabilitating people with transradial amputation. The system consists of three blocks: acquisition, processing, and activation. During the acquisition stage, myoelectric signals are obtained in real-time using the Myo Armband sensor to be sent to the computer through Bluetooth wireless communication to identify gestures. In addition, the signals from the RFP 602 pressure sensors are obtained using the Arduino UNO development board. With these signals, processing is done by applying the PID control technique to activate the actuators based on the gesture received and grabbing objects of different compositions and sizes. The communication between the sensor and actuator elements, the recognition of the gesture, as well as the visualization of the sensor signals is carried out through a graphical user interface (GUI) programmed in Matlab. From the validation tests of the connection between the sensor and the interface (GUI), an average time of 9 seconds is obtained, which allows verifying that there is a successful connection. From the grip and response time tests with the prosthesis, 84% effectiveness is obtained with an average time of 2.93 seconds. This indicates that the system meets the expected functionality. From this, the bioelectronic system meets the previously established requirements.