Artificial blood vessels created on a 3D printer
2011-09-16 0:00

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

Aurora Shooting Victim Parents Face $200K Court Fees, Bankruptcy, After Failing to Sue Ammo Dealers
2015-08-01 2:17
The 2012 Colorado Theater Shooting still doesn’t add up… Media character and ‘Shooter’ James Holmes in court in 2012-2013. In 2014, Sandy and Lonnie Phillips, the mother and stepfather of Aurora Theater Shooting victim Jessica Redfield Ghawi, tried to sue the ammo companies they believe supplied shooter James Holmes with his ammunition, body armor and other items. They bleived that the online retailer BulkAmmo.com had sold Holmes ...
FBI's Joint Terrorism Task Force Investigating Confederate Flags at MLK's Ebenezer Baptist Church
2015-08-01 2:21
According to the Atlanta Police Department, two White men left four small Confederate Battle Flags outside MLK’s Ebenezer Baptist Church in Atlanta … and get this, the FBI’s Joint Terrorism Task Force is on the scene investigating the incident. Atlanta police Chief George Turner said his agency was working with federal authorities and they have not determined what charges might be ...
Democratic National Committee Chair Wasserman Schultz Can’t Explain Difference Between Democrat Party and Socialism
2015-08-01 2:08
Things got very awkward today when Chris Matthews asked DNC Chair Debbie Wasserman Schultz what the difference was between the modern Democratic Party and Socialism. We haven’t seen that dazed look since Rachel Dolezal was busted as a fraud. Wasserman Schultz was speechless. Completely stumped. Couldn’t answer. Then changed the subject. Because we all know there is no difference between today’s Democrat Party and the radical ...
Catching on slow: Yet Another Study Show Cellphone Radiation Cause Cancer
2015-08-01 1:44
The scientists were right — your cell phone can give you cancer. There have long been whispers of a cancer connection from your cell — and a new study backs up the claims. "These data are a clear sign of the real risks this kind of radiation poses for human health," study author Igor Yakymenko said. Yakymenko’s meta-study — basically a study of ...
Trump Goes #Cuckservative on Immigration
2015-08-01 1:28
For weeks, the media have trumpeted the supposed death of the Trump campaign. First, they claimed, Trump’s campaign imploded on launch thanks to his comments about illegal immigration. Then they claimed that Trump was finished because of his slap at Senator’s (R-AZ) war service. But neither of those comments alienated Trump’s base – he’s maintained his seven point lead over ...
More News »