New polymer systems will be featured players in a bevy of new drug-eluting stents set to enter the market. The stents are placed in blood vessels close to the heart with the intent of releasing drugs that keep arteries open with patients who suffer from arteriosclerosis. It’s become a multi-billion dollar business with a couple of star players, and a spectacular technology display for high tech plastics. One of the exciting new entries features a bioresorbale polymer, first predicted by Design News. This is a plastic that disintegrates within six months, leaving just the cobalt chromium metal stent to prop open the artery. It comes in the Costar system from Conor Medical Systems. Conor was recently acquired by J&J. Abbott is developing a stent that is made of bioresobrale resin, specifically polylactic acid (PLA). It isn’t expected to hit the market for another five years. The new technologies in the stent business were reviewed yesterday at a cardiology meeting called CRT 2007 (Cardiovascular Revascularization Therapies) in Washington DC. My take: It will take a longer for new exciting technologies to make it to the operating table because of lingering questions about the effects of the original drug-eluting polymer stents. The questions focus more on the drugs than the polymers, but this one of the most exciting technology development areas for plastics on the planet.
The amount of plastic clogging the ocean continues to grow. Some startling, not-so-good news has come out recently about the roles plastic is playing in the ocean, as well as more heartening news about efforts to collect and reuse it.
Optomec's third America Makes project for metal 3D printing teams the LENS process company with GE Aviation, Lockheed, and other big aerospace names to develop guidelines for repairing high-value flight-critical Air Force components.
A self-propelled robot developed by a team of researchers headed by MIT promises to detect leaks quickly and accurately in gas pipelines, eliminating the likelihood of dangerous explosions. The robot may also be useful in water and petroleum pipe leak detection.
Aerojet Rocketdyne has built and successfully hot-fire tested an entire 3D-printed rocket engine. In other news, NASA's 3D-printed rocket engine injectors survived tests generating a record 20,000 pounds of thrust. Some performed equally well or better than welded parts.
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