Today, 3D printing is nothing new to the public, ranging from aerospace and aerospace toys to children’s toys. Implemented at the industrial level, 3D printing has been widely used in many fields such as manufacturing, military, automotive, and medical. Take medical care as an example. Now the medical industry has initially formed a comprehensive series of 3D printing products and applications from medical equipment, surgery to organs.
From the earliest 3D printed prostheses, 3D printed teeth, and now to the current 3D printed liver, researchers generally believe that it will take at least 10 years to realize a truly functional and transplantable 3D printed organ. But before that, we might as well understand some things that are currently “within our power”. For example, today we are going to introduce the handheld skin 3D printer, which can quickly repair deep wounds.
It is understood that the research team who invented this handheld skin 3D printer came from the University of Toronto. The printer can form tissue on the affected area and complete wound reconstruction in two minutes or less.
You may not know it. In fact, in the field of biological 3D printing, printing skin tissue is one of the most promising applications in this field. However, the current bioprinting equipment used in laboratories is often too large, expensive and complicated to operate, which limits its clinical application. This time, the 3D skin printers used by researchers at the University of Toronto, It can solve this problem well, and the solution it provides is more economical and more practical.
We say that deep wounds usually cause damage to the three layers of skin: epidermis, dermis, and subcutaneous tissue. For the time being, the preferred treatment method is split-thickness skin grafting, which uses healthy donor skin to be transplanted to the superficial epidermis and part of the dermis. This requires sufficient donor skin to cover these three layers. This method Is effective. But the actual situation is that part of the injured part is usually “untransplanted” or uncovered, which leads to poor healing.
The handheld 3D bioprinter invented by researchers at the University of Toronto uses tissue paper and a special bio-ink to promote tissue regeneration. The specific operation is to place the tissue piece on the designated part of the wound area to form a base that effectively regenerates damaged skin; the bio-ink is composed of protein-containing biomaterials. The biomaterials include the most abundant protein collagen in the dermis and are useful for wound healing. The vital protein fibrin, these bio-ink materials are arranged vertically along the inside of each tissue paper.
The size of this handheld 3D bio-printing equipment is similar to a small shoe box and weighs less than one kilogram. The important thing is that it removes the cleaning and incubation phases often required by many conventional 3D bio-printing equipment, and the operator only needs to perform You can get started with short-term training. The team hopes that one day, the portable 3D bioprinter they developed can be widely used in clinics, which can completely change the treatment of burns or other major skin wounds.