sciencehabit quotes a report from Science Magazine: If you shatter a bone in the future, a 3D printer and some special ink could be your best medicine. Researchers have created what they call “hyperelastic bone” that can be manufactured on demand and works almost as well as the real thing, at least in monkeys and rats. Though not ready to be implanted in humans, bioengineers are optimistic that the material could be a much-needed leap forward in quickly mending injuries ranging from bones wracked by cancer to broken skulls. Researchers at Northwestern University, Evanston, in Illinois are working on a hyperelastic bone, which is a type of scaffold made up of hydroxyapatite, a naturally occurring mineral that exists in our bones and teeth, and a biocompatible polymer called polycaprolactone, and a solvent. Hydroxyapatite provides strength and offers chemical cues to stem cells to create bone. The polycaprolactone polymer adds flexibility, and the solvent sticks the 3D-printed layers together as it evaporates during printing. The mixture is blended into an ink that is dispensed by the printer, layer by layer, into exact shapes matching the bone that needs to be replaced. The idea is, a patient would come in with a nasty broken bone — say, a shattered jaw — and instead of going through painful autograft surgeries or waiting for a custom scaffold to be manufactured, he or she could be x-rayed and a 3D-printed hyperelastic bone scaffold could be printed that same day. Read more of this story at Slashdot.
Read the original post:
Print-On-Demand Bone Could Quickly Mend Major Injuries
If you live in California, you may soon start to see self-driving cars on the road with no operators to be seen. California Governor Jerry Brown signed into law on Thursday a bill that allows a self-driving vehicle with no operator inside to test on a public road. Currently, companies are legally able to test self-driving cars in California as long as the operators are located inside the vehicles when they are being tested. Fortune reports: The bill introduced by Democratic Assemblywoman Susan Bonilla allows testing in Contra Costa County northeast of San Francisco of the first full-autonomous vehicle without a steering wheel, brakes, accelerator or operator. New legislation was necessary because although driverless vehicles can be tested on private land like the office park, the shuttle will cross a public road on its loop through the campus. The new law means that two cube-like Easymile shuttles that travel no faster than 25 mph (40 kph) will be tested for a period of up to six months before being deployed and used by people. In an interview with Reuters in March, Bonilla said the “natural tension” between regulators concerned about safety and lawmakers trying to encourage innovation in their state necessitated a new bill. “They’re risk averse and we’re saying we need to open the door here and take steps (to innovate), ” Bonilla said, calling the driverless shuttle project “a very wise first out-of-the-gate opportunity” to show how the technology could work safely. Read more of this story at Slashdot.