Scientists are continuously working on improving3D printing technologies for creating artificial organs intended for human transplantation. However, as a result of the creation of certain organs, there is a problem associated with a complex structure consisting of numerous small vessels that are densely intertwined (multivascularization).
Making copies of human organs from hundredsintertwined capillaries and vessels intended for pumping blood, lymph and air became possible as a result of the development of scientists from the United States. The new technology of three-dimensional biological printing uses stereolithography apparatus for tissue engineering or SLATE. A 3D printer uses a hydrogel that cures when exposed to ultraviolet light, and the organs are printed in layers with high resolution (10-50 microns).
Tested invention to create analoghuman lungs that are strong enough and resilient to withstand repeated cyclical contraction and expansion when air passes through them. In the future, it is planned to create not only organs intended for transplantation, but also test samples, on which it will be possible to study the process of formation and development of cancer cells. In the meantime, the prototype is light in size less than a 1-cent coin. The task of researchers is to achieve the scalability of an organ to the desired size without loss of functionality and endurance in continuous operation for years.
Source: popularmechanics.com, 3dprintingindustry.com