Usually, 3D printers are used for printing.mechanical parts and figures, but they can be useful in medicine. In 2014, a prototype device was created for printing large sheets of human skin that could be cut and used to restore the flesh of patients with serious wounds. Since then, this technology has made great strides forward - researchers from the Wake Forest Institute for Regenerative Medicine have created a device that can apply new skin directly to the affected areas of the body.
It is reported that it has a fairly compactdimensions so that it can be moved between hospital wards. It can easily be placed next to the bed so that any patient can lie still while the printer is doing its job. It is equipped with special nozzles, which are applied "biological ink" on the wounded flesh.
The material used is printedcreated on samples of healthy human skin. In particular, surgeons use two types of cells: fibroblasts that build a structure for wound healing, and keratinocytes, the main cells that we see on the outside of the skin. Thanks to the use of the patients' native cells, the new material is not rejected by their organisms. A mixture compatible with a 3D printer is formed during the mixing of cells with a hydrogel.
Unlike past medical printers,Before starting work, the novelty studies the structure of the wound and reveals its deep parts. First of all, it fills these cavities with fibroblasts, and only then covers the wound with keratinocytes. This approach significantly speeds up the healing process - experience in mice has shown that recovery starts from the wound center, and this is an excellent result.
Researchers intend to conduct clinicalhuman trials. They believe that the printer can be widely used in the treatment of people with severe burns and other severe wounds that cannot heal on their own.
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