A Breathable, Dual‐Parameter, User‐Friendly Pulse Sensing Array Based on Hierarchical Leather Composite for Continuous, Accurate, and Wireless Blood Pressure Monitoring

ABSTRACT Continuous, accurate blood pressure monitoring is critical for preventing and diagnosing hypertension‐related diseases. However, current continuous monitoring devices are bulky and expensive, restricting their widespread use in early diagnosis. Furthermore, existing pulse‐based sensing systems overlook user challenges in wearing comfort, pulse positioning, and susceptibility to acquisition conditions. Here, we develop a breathable, accurate, and integrated blood pressure monitoring system based on a flexible pressure sensor array, which is fabricated by patterned carboxylated carbon nanotube functionalized leather hierarchical composites. This array not only achieves high pulse sensing performance, featuring high fidelity, long‐term durability (> 7 months), rapid response (70 ms) and recovery time (60 ms), but also retains the inherent moisture permeability (8.3 g•m − 2 •h − 1 ) and degradability of leather. Meanwhile, the sensor array is crosstalk‐free and can significantly improve the success rate of pulse signal acquisition positioning. It features dynamic‐static dual‐parameter pressure sensing, and when combined with signal acquisition circuitry, enables decoupling pulse wave signals and wearing pressure from a single sensor—providing richer data for more accurate blood pressure estimation. Integrated with a trained neural network for blood pressure estimation, the AI‐empowered system enables continuous, accurate, and reliable monitoring, highlighting its potential in personalized health management and early hypertension diagnosis.