Application of 3D Printed Hydrogels in Wound Dressings

This paper focuses on the application of 3D printed hydrogels in wound dressings, and systematically explains its processing methods, application scenarios and development prospects. In terms of processing technology, extrusion molding has become a common method due to its wide material compatibility and low equipment cost, but it has problems of insufficient precision and low printing efficiency; photocuring is known for its high precision and high-quality surface quality, but the material needs to be modified and the equipment is expensive; bio-ink has attracted much attention because it can simulate human tissue and achieve multifunctionality, but it faces the problems of complex preparation and stability. In terms of application, 3D printed hydrogel dressings can maintain wound moisture and prevent infection for burns and scalds in trauma treatment, and can quickly stop bleeding and promote tissue regeneration for trauma; in the treatment of special disease-related wounds such as ulcers and diabetic wounds, customized design and loading of active ingredients can effectively improve the healing situation; intelligent responsive dressings can also dynamically adjust performance according to changes in the wound microenvironment. Although there are currently challenges such as material optimization and cost control, it has brought new breakthroughs to wound treatment and is expected to become the clinical mainstream in the future.