Keywords: Cold Atmospheric Plasma; CAP Therapy; Plasma Medicine; Non-Thermal Plasma; Low-Temperature Plasma; Plasma Treatment; Chronic Wound; Non-Healing Wound; Wound Healing; Wound Management; Diabetic Foot Ulcer; Venous Leg Ulcer; Pressure Ulcer; Decubitus Ulcer; Ischemic Ulcer; Leg Ulcer; Skin Ulcer; Tissue Regeneration; Granulation Tissue Formation; Wound Closure; Wound Size Reduction; Infection Control; Antimicrobial Therapy; Pain Management; Pain Reduction; Scarring; Scar Quality; Adverse Events; Safety; Efficacy; Randomized Controlled Trial; RCT; Clinical Trial; Atmospheric Pressure Plasma; Plasma Jet; Dielectric Barrier Discharge; DBD; Standard Wound Care; Conventional Wound Treatment; Moist Wound Healing.