(MENAFN - The Peninsula) Japanese scientists say they are on their way to being able to create custom-made skin, bone and joints using a 3D printer.

Several groups of researchers around the world have developed small masses of tissue for implants, but now they are looking to take the next step and make them functional.

Tsuyoshi Takato, a professor at the University of Tokyo Hospital, said his team had been working to create "a next-generation bio 3D printer", which would build up thin layers of biomaterials to form custom-made parts.

His team combines stem cells - the proto-cells that are able to develop into any body part - and proteins that trigger growth, as well as synthetic substance similar to human collagen.

Using a 3D printer, they are working on "mimicking the structure of organs" - such as the hard surface and spongy inside for bones, Takato said.

In just a few hours, the printer crafts an implant using data from a Computer Tomography (CT) scan. These implants can fit neatly into place in the body, and can quickly become assimilated by real tissue and other organs in the patient, the plastic surgeon said.

"We usually take cartilage or bone from the patient's own body (for regular implants), but these custom-made implants will mean not having to remove source material," Takato said.

The technology could also offer hope for children born with bone or cartilage problems, for whom regular synthetic implants are no good because of the rate of their body's growth. The main hurdle was the heat generated by conventional 3D printers, which damages living cells and protein.

"We haven't fully worked out how to avoid heat denaturation but we already have some models and are exploring which offers the most efficient method," he said.

The artificial protein Takato and his team use was developed by Fujifilm, which has been studying collagen used in photographic films. Since it is modelled on human collagen and does not derive from animals, it can be easily assimilated in human bodies, reducing the risk of infections such as mad-cow disease.

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Japan scientists target 3D-printed body parts

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