Highly Sensitive Cuffless Blood Pressure Monitoring with Selective Laser‐Sintered Liquid Metal Conductors

Abstract The global prevalence of hypertension affects billions of individuals, yet only 21% of those impacted manage their condition. Although commercial non‐clinical blood pressure monitoring devices are available, they are bulky and inconvenient, so they are incapable of continuous and long‐term monitoring. Consequently, these devices are not appropriate for tracking dynamic health changes influenced by individual behaviors and lifestyles, which can lead to severe complications. Therefore, continuous blood pressure monitoring in everyday environments is essential for the prevention and treatment of blood pressure‐related issues. Here, a continuous blood pressure monitoring system is introduced that features a soft and compact form factor, leveraging the inherent metallic conductivity, stretchability, and biocompatibility of laser‐sintered liquid metal conductors. The liquid metal conductors capture both mechanical and electrical signals originating from the heart due to their high sensitivity to detect blood pulses and fluidity‐driven conformability, offering continuous blood pressure signals. Moreover, the continuous blood pressure is measured non‐invasively without additional components such as a cuff. As proof, cardiac activity is continuously monitored before and after exercise, including the recovery phase. The innovative system is anticipated to address the urgent needs of billions of individuals suffering from cardiovascular issues.