Tissue‐Adhesive Piezoelectric Soft Sensor for In Vivo Blood Pressure Monitoring During Surgical Operation

Abstract The reliable function in vivo of self‐powered implantable bioelectric devices (iBEDs) requires biocompatible, seamless, effective interactions with biological tissues. Herein, an tissue‐adhesive piezoelectric soft sensor (TPSS), which the converts biomechanical signals into electrical signals, and adhesive hydrogel (AH) strengthens this conversion by seamlessly adhering on wet curvilinear surface, is proposed. optimized AH exhibits strong adhesion to various organic or inorganic surfaces, including six commonly used engineering materials three As a pressure sensor, TPSS proves good vitro performance high output 8.3 V, long‐term stability over 6000 cycles, energy power density 186.9 µW m −2 . In large animal experiment, adheres right‐side internal carotid artery Yorkshire pig monitor blood during surgical operation. Compared commercial sensors that work inserting tissues, does not cause any damage can be peeled off after service. integration enables more efficient between system iBEDs, also contributes next‐generation bioelectronics features battery‐free, intelligent, accurate.