Artificial blood vessels created on a 3D printer
2011 09 16

By Katia Moskvitch | BBCNews.co.uk

Artificial blood vessels made on a 3D printer may soon be used for transplants of lab-created organs.

Until now, the stumbling block in tissue engineering has been supplying artificial tissue with nutrients that have to arrive via capillary vessels.

A team at the Fraunhofer Institute in Germany has solved that problem using 3D printing and a technique called multiphoton polymerisation.


Artificial blood vessels could help those in urgent need of an organ transplant.


The findings will be shown at the Biotechnica Fair in Germany in October.

Out of thousands of patients in desperate need of an organ transplant there are inevitably some who do not get it in time.

In Germany, for instance, more than 11,000 people have been put on an organ transplant waiting list in 2011 alone.

To make sure more patients receive these life-saving surgeries, researchers in tissue engineering all over the globe have been working on creating artificial tissue and even entire organs in the lab.

But for a lab-made organ to function, it needs to be equipped with artificial blood vessels - tiny and extremely complex tubes that our organs naturally possess, used to carry nutrients.

The individual techniques are already functioning and they are presently working in the test phase”

Numerous attempts have been made to create synthetic capillaries, and the latest one by the German team seems to be especially promising.

"The individual techniques are already functioning and they are presently working in the test phase; the prototype for the combined system is being built," said Dr Gunter Tovar, who heads the BioRap project at Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB in Stuttgart.


3D printer builds artificial tissue replacements cell by cell. Source


Elastic biomaterials
3D printing technology has been increasingly used in numerous industries, ranging from creating clothes, architectural models and even chocolate treats.

But this time, Dr Tovar’s team had a much more challenging printing mission.

To print something as small and complex as a blood vessel, the scientists combined the 3D printing technology with two-photon polymerisation - shining intense laser beams onto the material to stimulate the molecules in a very small focus point.

The material then becomes an elastic solid, allowing the researchers to create highly precise and elastic structures that would be able to interact with a human body’s natural tissue.

So that the synthetic tubes do not get rejected by the living organism, their walls are coated with modified biomoelcules.

Such biomolecules are also present in the composition of the "inks" used for the blood vessel printer, combined with synthetic polymers.

"We are establishing a basis for applying rapid prototyping to elastic and organic biomaterials," said Dr Tovar.

"The vascular systems illustrate very dramatically what opportunities this technology has to offer, but that’s definitely not the only thing possible."


Article from: bbc.co.uk




"Surgeon Anthony Atala demonstrates an early-stage experiment that could someday solve the organ-donor problem: a 3D printer that uses living cells to output a transplantable kidney. Using similar technology, Dr. Atala’s young patient Luke Massella received an engineered bladder 10 years ago; we meet him onstage."


Video from: YouTube.com



"Saving Lives with Skin Jet Printers"

Video from: YouTube.com




Related Articles
A simple blood test that tells you how long you’ll live
Kate Middleton’s Royal Bloodline
Lady Gaga fan kills cat for blood
Scientists develop blood test for Down’s Syndrome
Rh Negative blood types - descendants of Ancient Astronauts? (Video)
World’s first plane created using 3D printer and can go up to 100mph!
First commercial 3-D bio-printer makes human tissue and organs


Latest News from our Front Page

Sweden is so deranged, there are no words to describe it – Danish politician
2014-12-19 1:53
Politically correct Sweden is such a deranged society that there is no term in social science sufficient enough to describe it – argues Pia Kjærsgaard the Danish People’s Party former leader In this article in Den Korte Avis, Kjærsgaard marvels at the fact that the politically correct are so desperate that they have graduated from using worn-out epiteths such as neo-fascists, ...
U.N. sending thousands of Muslims to America
2014-12-19 0:44
The federal government is preparing for another “surge” in refugees and this time they won’t be coming illegally from Central America. The U.S. State Department announced this week that the first major contingent of Syrian refugees, 9,000 of them, have been hand-selected by the United Nations for resettlement into communities across the United States. The announcement came Tuesday on the State Department’s ...
Why You Should Watch Beheading Videos
2014-12-17 21:13
Modernity is a dream. It is a dream that we can make the world something other than what it is through technology, prosperity, and above all “education.” People will able to pick their own “gender.” Different cultures, races, and religions can blend into one seamless, corporate-friendly whole. And violence and death, it is implied, will be wished out of existence. Today, a ...
CIA torture is reason for France to exit NATO – Le Pen
2014-12-17 20:20
The shocking revelations of CIA torture techniques give France a reason to exit NATO, National Front party leader Marine Le Pen said on Saturday. The report on the CIA’s former interrogation practices has drawn wide criticism since its release. “If indeed everyone is outraged by the tortures used by the US then, let’s leave NATO,” Le Pen said during an interview ...
900 Documented Examples of Obama's Lawbreaking, Lying, Corruption, Cronyism, Hypocrisy & Waste
2014-12-17 20:00
Our friend, Dan from Squirrel Hill, has updated his list to 900 documented examples of Barack Obama's lying, lawbreaking, corruption, cronyism, etc. He began with 252 examples, then quickly grew to 504 and later to 694. Recently, he added more than 200 more examples of the usurper-in-chief's unlawful acts. Every President, every politician, and every human being tells lies and engages ...
More News »