A new tool has been developed that can 3D bio-print inside the human body to construct natural tissue-like structures. The tool, developed by researchers at the University of Bristol in the UK, uses a robotically controlled micro-needle to deliver bio-ink directly into the body.

The bio-ink is made up of living cells, which can then be used to create complex tissue structures such as blood vessels, nerves, and muscles. The technique has the potential to revolutionize the field of regenerative medicine, allowing doctors to repair and replace damaged tissues and organs.

The tool works by using a high-speed jet of air to fire the micro-needle into the body, where it can then deposit the bio-ink in a precise location. The researchers have tested the technique on chicken embryos, and they have successfully created blood vessels and other tissue structures.

The next step is to test the technique on larger animals and eventually humans, with the hope of developing new treatments for a range of medical conditions. The researchers believe that the technique could be used to repair damaged tissue in the heart, liver, and other organs, as well as to create new tissue for transplantation.

The development of this new tool is a major breakthrough in the field of regenerative medicine, and it has the potential to transform the way we treat a range of medical conditions. By using living cells to create natural tissue structures, doctors can provide patients with more effective and long-lasting treatment, improving their quality of life and reducing the need for invasive surgeries and other procedures.