Electro-stimulative, hydrophilic-hydrophobic dual-structured metallic mesh wound dressing

Abstract

A wound dressing utilizes a metallic mesh with a dual hydrophilic-hydrophobic structure for active fluid management. A first, hydrophilic surface of the mesh is functionalized with a plurality of zinc oxide (ZnO) nanoneedles. The nanoneedles provide a sustained, solid-state antimicrobial defense and form a non-wetting surface that drives exudate away from the wound bed. The nanoneedles are further configured to concentrate an applied electric field at their sharp tips, enabling effective electro-stimulation of tissue at a low operating voltage of 10 volts or less. The second, hydrophobic surface of the mesh complements this action by controlling moisture. This integration of non-wetting topology, sustained bactericidal action, and low-voltage electro-stimulation provides a multifaceted approach to advanced wound care.

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