Weigh less than 1 kilogram or replace traditional skin grafting


Researchers at the University of Toronto in Canada have developed a handheld 3D skin printer that prints skin tissue, directly covers wounds, accelerates healing, or replaces traditional skin grafting.


The printer can spray a layer of protein-based "bio-ink" in the wound, where collagen and fibrin play a role in repairing the skin.


In a report published in the latest issue of the "Chip Lab," the researchers wrote that if the skin is deeper, that is, the three layers of the epidermis, dermis, and subcutaneous tissue are damaged, the traditional treatment is skin grafting, requiring There are enough healthy donor skin and often poor healing. 3D bioprinting technology offers a new way of thinking for this type of treatment. The British Sky News Network quoted research leader Axel Gunther as saying: "Most existing 3D bioprinters are cumbersome, slow and expensive, and not suitable for clinical use." They developed this handheld printer. Overcome these ills, weigh less than a kilogram, and require simple training before operation.


The researchers plan to enhance the functionality of the printer to cover larger wound wounds, and to conduct clinical trials one day to revolutionize burn treatment.