Research Progress and Prospect of Bio-ink Application in 3D Printing

In the past few decades, bioprinting technology has gradually become an indispensable part of biomedicine, among which bio-ink is an essential printing material in 3D printing technology. Biological scaffolds printed by bio-ink have a huge role and potential in tissue repair and regenerative medicine. The right bio-inks could enable 3D printing technology to print human tissue and organ replacements. Through the explanation and explanation of bio-ink as the main material of bio-3D printing, and review as a bio-3D material, the current advantages and disadvantages of bio-ink, its application and different classifications, as well as the future development trend and prospect of bio-ink. Biological inks still have many shortcomings, the comprehensive performance needs to be improved, such as how to maintain biocompatibility while having mechanical properties, in the future, there will be more and more biological inks to be studied to meet People's Daily life and medical needs. At present, a variety of emerging bio-inks with good comprehensive properties have been successfully developed, which have not only good biocompatibility but also good mechanical properties. It can meet the needs of 3D bioprinting. By studying the shortcomings of existing bio-inks, this study summarized and concluded the advantages and disadvantages of existing bio-inks and obtained the development direction of bio-inks.