Lifeboat Foundation

As of this month, over 4,000 Americans are on the waiting list to receive a heart transplant. With failing hearts, these patients have no other options; heart tissue, unlike other parts of the body, is unable to heal itself once it is damaged. Fortunately, recent work by a group at Carnegie Mellon could one day lead to a world in which transplants are no longer necessary to repair damaged organs.

“We’ve been able to take MRI images of coronary arteries and 3-D images of embryonic hearts and 3-D bioprint them with unprecedented resolution and quality out of very soft materials like collagens, alginates and fibrins,” said Adam Feinberg, an associate professor of Materials Science and Engineering and Biomedical Engineering at Carnegie Mellon University. Feinberg leads the Regenerative Biomaterials and Therapeutics Group, and the group’s study was published in the October 23 issue of the journal Science Advances. A demonstration of the technology can be seen below.

“As excellently demonstrated by Professor Feinberg’s work in bioprinting, our CMU researchers continue to develop novel solutions like this for problems that can have a transformational effect on society,” said Jim Garrett, Dean of Carnegie Mellon’s College of Engineering. “We should expect to see 3-D bioprinting continue to grow as an important tool for a large number of medical applications.”

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If you think the image above looks frightening, you’re right. The crazy contraption pictured in the image is the first portable railgun, a futuristic projectile launcher associated most commonly with the military or NASA. The man in the image above isn’t in the military, and he’s not a NASA engineer. Instead, he’s a civilian who used some engineering smarts, some widely available parts and a 3D printer to create a functioning weapon that can fire graphite, aluminum, tungsten and even plasma projectiles at speeds of more than 560 mph.

And then there’s the best part: There are videos of this homemade railgun in action.

Continue reading “3D printing used to make first real handheld railgun, which fires plasma projectiles at 560 mph” »

Created by Russian engineer Nikita Chen-yun-tai, the new Apis Cor 3D printer is powerful enough to print a building in one day, yet small enough to be moved with minimal preparation and transportation costs. This portability allows users to print a building in one location and easily move the Apis Cor the next day to another spot. It promises to revolutionize the use of 3D printers in construction, especially in developing nations where low-cost, efficient printing is critical.

The 3D printing of houses is not a new idea — companies have been using the tenets of additive manufacturing for years. What makes the compact Apis Cor printer unique is the unit’s small size — it measures 16.4 ft by 5 ft, weighs 2.5 tons and can be assembled within 30 minutes. As a result, the Apis Cor can be moved easily without the need for an expensive method of transportation and setup. It requires no site preparation and no testing before use, which means it can be dropped on site and deployed right away after assembly.

Related: A Chinese company assembled this 3D-printed home in just three hours.

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1. A heart of foam.
2. Artificial arteries.
3. Brain implants.
4. Robotic hand that can recognize objects by Feel.
5. Upside-Down Rover to explore Europa.

Welcome to #18 Avatar Technology Digest. Again, get ready for exciting news on Technology, Medical Cybernetics and Artificial Intelligence. Thank you for watching us. You are welcome to Subscribe, follow us in social media, leave your comments and join the conversation. And here are the top stories of the last week.

1) A heart of foam could replace your own. Existing artificial hearts have multiple moving parts, which increases the chance of failure, but this new device is just a single piece of material. Researchers inspired by soft robots have built a pumping artificial heart that could one day replace the real deal.
The team of Bioengineers at Cornell University build their robots out of a solid, plastic foam, which naturally has an interconnected network of tubes to let air flow – just as our muscles are permeated by blood vessels. A solid coating of plastic seals everything inside like a skin.

Continue reading “#18 Avatar Technology Digest / Paralyzed Patients Control Comp…” »

http://voc.tv/1cRrjAQ

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While scientists have had success in the past printing structures like “bionic ears,” a clear path to making functional internal organs and tissue hasn’t really emerged. However, researchers at the University of Florida in Gainesville have developed a way of printing complex objects in gel, a method that could help pave the way to 3D-printed organs in the future.

The hard thing about printing intricate organic structures like blood vessels and complicated organs is that they collapse under their own weight before they solidify. The gel here, which is made of an acrylic acid polymer, acts as a scaffold to hold the structure in place during the printing process. That approach has already allowed the team to print with organic materials — and even make a replica of a human brain.

Continue reading “3D printing in gel shows how scientists could print human organs” »

Researchers have developed a new technique to produce a 3D ‘micro-printed’ array of needles capable of drug delivery. The technique would offer a pain-free drug delivery device that would allow drugs to diffuse within the body as the biomaterial device degrades in the body. This offers treatments for a wide range of diseases, including melanoma cancers.

The results are published today, Wednesday 30th September, in the journal Biofabrication .

The researchers, based at the University of Akron and the University of Texas, report producing a drug-loaded array for transdermal delivery of a chemotherapeutic drug, fabricated using microstereolithography. The arrays consisted of 25 poly(propylene fumarate) microneedles, each needle having a tip and base diameter of 20 µm and 200 µm, respectively, and a height of 1 mm.

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Reconstituting epithelial (skin) microtissues with programmed size, shape, composition, spatial heterogeneity, and embedding extracellular matrix. Scheme and images of fully embedded aggregates of human luminal and myoepithelial cells. (credit: Michael E Todhunter et al./Nature Methods)

A new technique developed by UCSF scientists for building organoids (tiny models of human tissues) more precisely turns human cells into the biological equivalent of LEGO bricks. Called DNA Programmed Assembly of Cells (DPAC), it allows researchers in hours to create arrays of thousands of custom-designed organoids, such as models of human mammary glands containing several hundred cells each.

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Just days ago it was announced that a 3D printed guide developed by researchers in Minnesota could help facilitate the regrowth of damaged nerves within the human body. In the wake of this exciting breakthrough, is another progressive use for 3D printing within the medical world, as the same researchers have found a way to release biomolecules into the body through a 3D printed scaffold with more precision than ever before.

Continue reading “3D printed scaffolds allow for precise release of biomolecules into the human body” »