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Human tissue and blood vessel heart 3D printing



The heart made by a researcher at Tel Aviv University is similar in size to a rabbit.

Israeli scientists unveiled Monday a 3D print of the heart with human tissues and blood vessels called the "first major medical breakthrough" to improve transplantability.

Although still far away, scientists hope that someday we will be able to create a patch that will regenerate a defective heart as well as a heart suitable for human implantation.

The heart made by a researcher at Tel Aviv University is similar in size to a rabbit.

"The project has been successfully designed by everyone, everywhere, and has printed the heart, blood vessels, ventricles and ventricles," said Tal Dvir, who led the project. "In the past, people printed 3D heart structures, but not cells or blood vessels."

But scientists say 3D-printed hearts have many difficulties before they are implanted in patients.

A researcher at Tel Aviv University published a study published in his colleagues in the journal Advanced Science, and a three – dimensional print of the heart about the size of a cherry in a reporter ' It was shown.

The researcher must now teach the printed mind to "act" like it really is. Cells can now contract, but are not yet capable of pumping.

Then they plan to implant in animal models about a year later, Dvir said.

"Perhaps 10 years from now, we will have organ printers in the best hospitals in the world, and these procedures will go on routinely," he said.

But he said the hospital would begin with a simpler organ than the heart.

Tel Aviv University said in a statement announcing its findings "major medical innovation".

Cardiovascular disease is the world's largest cause of death according to the World Health Organization (WHO), and transplant surgery is the only option for patients at worst.

However, the number of donors is limited and many people are waiting.

When a research team benefits, it can be a victim of a body that refuses to undergo a transplant operation, which researchers are trying to overcome.

Their research is related to biopsy of the adipose tissue of patients used in the development of "ink" for 3D printing.

First, the statement said that the entire heart was created after a patient-centered heart patch was created.

Using the patient's own tissues is important to eliminate the risk that the implants will develop and reject the immune response, Dvir said.

"The biocompatibility of engineering materials is important to eliminate the risk of implant rejection that jeopardizes the success of these treatments," Dvir said.

The remaining challenge involves a way to expand cells to have enough tissue to reproduce a human-sized heart, he said.

Currently, 3D printers are limited by the size of their resolution, and another challenge is figuring out how to print all the small blood vessels.

But the current 3D print was a primitive size, like the rabbit's heart size, but "the bigger one needs the same technology," Dvir said.

3D printing has opened promise and debate in a number of areas.

This technology has been developed to print everything from home to gun in 3D.

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