A Modular ECG-Controlled Myoelectric Prosthetic Arm With Detachable Electrode Band

Resumen

A person who lost their hand in accidents or surgical removal of arm due to accidents and limb disabilities severely impact the quality of life, especially in economically challenged populations where access to advanced prosthetic limbs is limited and traditional prosthetic arms are more expensive, mechanically complex, and not easily adaptable for personalized use. To address these limitations, we developed a low-cost, Arduino-based myoelectric prosthetic arm controlled using bio-signals from the AD8232 ECG sensor. This system detects muscle electrical activity through three surface electrodes with the help of ECG sensor it translates the electrical impulse into a signal to control servo motor actuation and mimicking the movement of natural fingers. The prosthetic arm model designed by using cardboard and softwood, combined and moulded with Flex Quick, ensuring affordability, durability, and ease of replication. Sensor data is analysed in real time and compared against modified threshold values to determine which finger movement is intended, enabling accurate and responsive actuation of the finger movements. This non-invasive and wearable solution promotes accessibility and independence for individuals who lost their arm in accident or disable from birth, especially in low-resource settings. Our modular design and open-source platform (Arduino uno) make it ideal for educational, rehabilitation, and rural healthcare applications.