Self-contracting, battery-free triboelectric wound healing strip with strong wet adhesion.

ABSTRACT: Conventional wound closure techniques, such as suturing and stapling, often cause infection, delayed healing, and tissue damage, particularly in fragile or compromised tissues. A sutureless, battery-free adhesive strip (SBF strip) is developed to integrate shape-memory-assisted mechanical approximation with impedance-matched electrical stimulation for enhanced tissue repair. The device incorporates a shape memory polymer (SMP) responsive at near-body temperature and a robust wet-adhesive interface (> 200 J m^-2), enabling rapid attachment and uniform closure under mild heating (40 °C). A built-in ultrasound-driven triboelectric system achieves optimal skin-impedance matching (~50 kΩ), generating electric fields up to 0.59 kV m^-1 under 0.5 W cm^-2 to promote c

SUBMITTER: Meng X 

PROVIDER: S-EPMC12325624 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature