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3D printing inside the human body

20.06.2020

More and more work in our time is focused on the creation of human organs using 3D printing. However, such body parts must be implanted through relatively large incisions. New bio-ink technology will allow "growing" organs inside the human body.

There are already different types of bio-inks in the world. As a rule, it is a liquid containing living cells, scaffold material and growth factors that encourage cells to multiply on the scaffold material, gradually turning it into a biological tissue.

Such bio-ink is "squeezed out" from the nozzle of a 3D printer, creating organs outside the body, layer by layer. In many cases, they harden under the influence of ultraviolet radiation. Unfortunately, these rays are harmful to the patient's tissues. The new bio-ink developed by American scientists works differently.

Fluid is delivered from a thin tip of a robotic nozzle that is surgically inserted into the patient's body through a small incision. To hold each strand of bio-ink in place, the nozzle makes a small niche in the patient's soft tissues and then places a clot of fluid into this space, which serves as an anchor. When the nozzle is removed, it places another anchor on the outside of the fabric. The scientists also say it's important to note that such a material does not require UV radiation in order to harden.

Researchers believe that in the future this substance can be used to create parts of the body such as blood vessels or spinal discs. However, now the material can be used as a "plaster" for damaged or defective organs.

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