Review
Wang Zichen, Zheng Bohui, Liu Chengyin, Bai Xudong, Su Yewang, Chang Qi, Zhou Hongwei
Smart bandages represent a novel class of wound dressings that integrate traditional functions such as fixation and protection with advanced features including intelligent monitoring, infection prevention, and active therapy. These devices offer considerable advantages in the field of health monitoring and beyond. A typical smart bandage consists of flexible substrates, sensing units, flexible electronic circuits, drug delivery systems, wireless communication modules, and other integrated components. They are capable of real-time monitoring of various physiological parameters, such as biomechanical signals, temperature, pH levels, and specific biomarkers, thereby demonstrating broad application potential in motion tracking, chronic wound management, intelligent diagnostics and treatment, emergency medical response, precision drug delivery, and personalized healthcare. This review focuses on the monitoring of health-related indicators via smart bandages. Based on an overview of their structural components and monitoring mechanisms, the paper systematically summarizes the development status of smart bandages with different functionalities, including those capable of biomechanical, pH, temperature, and biomarker monitoring, as well as multifunctional integrated systems. Finally, the review discusses the current advantages, key technical challenges, and future research directions in this emerging field.