Ta-Sheng ChangChiao-Wen ChienElmer Ismael GuerraTing-Yi WangChien-Wei HuangYing-Siou LinJung-Chen ChangWei-Ssu Liao2025-04-212025-04-212025https://scholars.lib.ntu.edu.tw/handle/123456789/728367Pressure injuries have become one of the most prevalent long-term healthcare challenges, and efficient detection of pressure on body tissues, especially over bony prominences, is essential for determining appropriate relief interventions. In the post-epidemic era, heightened awareness of infection risks and personal healthcare has strongly demanded disposable medical devices with durable functionality. In response, we introduce a wireless, flexible, and disposable sensing device designed for long-term stress monitoring and pressure injury prevention on the human-body. A porous paper matrix embedded with CNT-PEDOT composites establishes compressible conducting networks, enabling sensitive external pressure detection through piezoresistive effects. The dispersion of CNT-PEDOT aggregates and their distinctive gradient distribution throughout the porous paper structure provide controlled conductivity and sensitivity within the device. A multilayer design is achieved through selective drop-casting and preferential stacking forms alternating conductive/nonconductive interfaces, effectively modulating the device's electrical properties. With an outstanding sensitivity of 40.09 kPa−1, a rapid response time of 125 ms, a broad pressure detection range of 0 to 100 kPa, good durability exceeding 1000 cycles, and consistent reproducibility across 500 times, this integrated sensor demonstrates strong potential for medical device applications. When integrated with a bluetooth module, the multichannel wireless detection system enables real-time remote monitoring of human movement. It accurately identifies various body postures with high sensitivity, specificity, and accuracy, achieving near 100% accuracy in clinical tests. In practice, the proposed sensor offers a promising solution for physiological signal monitoring, addressing both the cost and efficiency challenges associated with manufacturing disposable medical equipment. This approach is anticipated to significantly support caregivers in hospitals, long-term care facilities, and community home-care settings by facilitating effective, science-based pressure injury prevention in long-term patient management.en[SDGs]SDG3[SDGs]SDG9journal article10.1039/d4tc05320f