MRI’s can easily be turned into 3D models now, allowing doctors to pre-plan difficult or dangerous surgeries using 3D printed replicas of the areas being targeted by surgeons. They can also 3D print surgical guides, making tricky procedures like bone setting or reconstructive surgery faster and more accurate. And metal 3D printed medical appliances tailored to a specific patient’s body are becoming more and more common. Researchers are even looking into the possibility of 3D printing human tissue and organs. And now, we may be on the cusp of actually replacing human bones with 3D printed replicas.

A group of students developing a 3D printer that is capable of replicating human bone structures has been awarded as the Cal State Long Beach Innovation Challenge winners. The LuxNova OsBot 3D printer was developed by a group of students who say that it can replicate the unique and complex structure of human bones, even down to the micro and nanostructures.

As winners of the Innovation Challenge, LuxNova President/CEO Trevor Wagner and Lead Engineer Miguel Vintimilla will receive seed funds of $10,000 to launch their startup. The award also includes office space, assistance with developing a marketing strategy and assistance with negotiating the tricky legal intricacies of launching this type of business.

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Continuous liquid interface production (CLIP) works by projecting UV light through an oxygen-permeable window into a liquid resin. Light and oxygen control solidification of the resin, producing objects tens of centimeters in size and with feature resolution <100 μm.

“By rethinking the whole approach to 3-D printing, and the chemistry and physics behind the process, we have developed a new technology that can create parts radically faster than traditional technologies by essentially ‘growing’ them in a pool of liquid,” said Dr. Joseph DeSimone, a professor at the University of North Carolina at Chapel Hill and North Carolina State University.

DeSimone is also CEO of the startup Carbon3D Inc., which is developing the technology through a sponsored research agreement with UNC.

CLIP is the first 3-D printing process that uses tunable photochemistry instead of a layer-by-layer approach. CLIP also allows previously unachievable geometries and creates ready-to-use products 25 to 100 times faster than other 3-D printing methods.

A diagram of the continuous liquid interface production (CLIP) process. Courtesy of Carbon3D Inc.

Compatible with elastomers, silicones, nylon-like materials, ceramics and biodegradable materials, CLIP may be useful for fashioning devices for use in health care and medicine, as well as in the automotive and aviation industries.

“In addition to using new materials, CLIP can allow us to make stronger objects with unique geometries that other techniques cannot achieve, such as cardiac stents personally tailored to meet the needs of a specific patient,” DeSimone said. “Since CLIP facilitates 3-D polymeric object fabrication in a matter of minutes instead of hours or days, it would not be impossible within coming years to enable personalized coronary stents, dental implants or prosthetics to be 3-D printed on demand in a medical setting.”

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