**2. Drug delivery system in wound healing**

Chronic wounds and infected wounds currently pose a significant burden worldwide. Drug delivery systems (DDS) in wound healing that release antimicrobial and anti‐inflammatory drugs represent a great opportunity to prevent infections or enhance the effectiveness of current commercial drugs. Many biocompatible biomaterials have been extensively investi‐ gated to deliver drugs into wound beds and to improve wound healing. Significant efforts have been made to develop DDS using different types of biomaterials, such as polymeric microspheres and nanospheres, lipid nanoparticles, nanofibrous structures, hydrogels, and scaffolds [16].
