Desenvolvimento de um sistema de feedback tátil para usuários de prótese de membro superior baseado em estimulação eletrodérmica

Abstract

Amputation profoundly affects both the physical and emotional aspects of an individual's life, due to movement limitations and aesthetic alterations. Prosthetic rehabilitation plays a crucial role in restoring the functionality and improving the quality of life for amputees, enabling them to resume daily activities. However, the use of upper limb prostheses is often hindered by limited mobility and handling difficulties. In this context, this study focused on the development of a tactile feedback device for users of upper limb prostheses. The designed equipment underwent testing and demonstrated excellent time resolution and current intensity, low associated signal noise, and effective operation over time. An accompanying mobile application was developed for signal modulation, connecting a device to the tactile feedback system via BLE (Bluetooth Low Energy), facilitating tests and analysis of perception and pain thresholds for users. The integration of BLE devices proved to be straightforward and efficient, allowing for future connections with appropriate prostheses. The fidelity of the real signal to the stimulation protocol to which the system is subjected, with the caveat of transient signal removal, highlights the potential to evoke tactile sensations for users of upper limb prostheses through the developed equipment.