Does an innovative Y-shaped hydrogel mitral clip with magnetic actuation improve leaflet fixation and hemocompatibility compared to commercial alternatives in preclinical models?
A novel magnetically actuated hydrogel mitral clip demonstrates promising preclinical performance, tissue integration, and hemocompatibility for next-generation transcatheter mitral valve repair.
hydrogel for magnetic actuation, a flexible epoxy acrylate scaffold for mechanical compliance, and a biocompatible polydimethylsiloxane interface. The clip exhibits Janus wettability, with a hydrophilic inner surface to promote effective leaflet anchoring and a hydrophobic outer surface to minimize blood fouling, thus optimizing device-tissue and device-fluid interactions. Performance was validated through in vitro, ex vivo, and computational studies, confirming precise magnetic clamping, strong adhesion, and mechanical resilience under simulated physiological conditions. Hemocompatibility evaluations demonstrated favorable outcomes in terms of blood interaction and reduced thrombogenicity when benchmarked against commercial alternatives. This soft, adaptive device supports minimally invasive deployment and reliable leaflet fixation, offering a promising approach for next-generation transcatheter mitral valve repair with enhanced tissue integration and blood compatibility.
Wang et al. (Tue,) studied this question.