Inside the coronary arteries of millions of americans are stents, metal mesh tubes the length of a dime that prop open narrowed blood vessels to help prevent heart attacks. But in about a quarter of patients, scar tissue builds up in and around the stents three to six months after they’re inserted, threatening to reclog arteries. Electrical engineer Yogesh Gianchandani and his team at the University of Michigan have designed a stent that can monitor blood pressure as an early warning sign of renarrowing. The researchers attached a tiny, flat pressure sensor to the stent and modified the pattern of the wire mesh so that it acts as an antenna. The stent wirelessly transmits pressure and flow information through the skin to an external device held against the chest. Gianchandani says the device could allow patients to monitor their blood pressure at home, saving repeated trips to the cardiologist and avoiding invasive procedures to check for arterial reclogging. The researchers have tested their prototype in simulated arteries and are now fine-tuning the device. They plan to have completed animal tests in about two years and hope to have the “stentenna” on the market in three to five years.
Meta has built a massive new language AI—and it’s giving it away for free
Facebook’s parent company is inviting researchers to pore over and pick apart the flaws in its version of GPT-3
The gene-edited pig heart given to a dying patient was infected with a pig virus
The first transplant of a genetically-modified pig heart into a human may have ended prematurely because of a well-known—and avoidable—risk.
Saudi Arabia plans to spend $1 billion a year discovering treatments to slow aging
The oil kingdom fears that its population is aging at an accelerated rate and hopes to test drugs to reverse the problem. First up might be the diabetes drug metformin.
Yann LeCun has a bold new vision for the future of AI
One of the godfathers of deep learning pulls together old ideas to sketch out a fresh path for AI, but raises as many questions as he answers.
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