Abstract
Collagen possesses high biocompatibility with all tissue and cell types in the body, enabling the creation of multifunctional composite materials for medical applications. In biomedical engineering, naturally-sourced collagen is often combined with diverse organic and inorganic bioactive components to eliminate defects and disorders in fields including orthopedics, dermatology, and more. At the same time, medical-related infection issues and the precise treatment needs of patients require collagen composite biomaterials to have antibacterial properties and customized structures. This paper reviews the antibacterial functionalization of collagen composite biomaterials in recent years, including the combination with inorganic or organic antibacterial agents, which is beneficial for preventing and controlling biological contamination in medical applications. Then, the existing problems and future development directions for the architecturalization of collagen composite materials with 3D printing were discussed, providing guidance for personalized customization of multifunctional materials to meet the specific needs of patients in the future.Graphical
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