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Engineers at Northwestern University have developed the worlds smallest pacemaker. Its so small, as a matter of fact, that it fits inside the tip of a syringe. This means that its injectable, so patients could potentially avoid a painful surgery. It safely dissolves into the bloodstream after a time, so its a temporary solution. Its designed for folks who need heart help on a short-term basis, like newborn babies with congenital defects. However, it can work with hearts of all sizes. Its also powered by light, which is pretty darned cool. The pacemaker is paired with a wireless wearable device that mounts to a patients chest. When that small device detects an irregular heartbeat, it shines a light that activates the pacemaker. These light pulses can penetrate a patients skin, bones and muscles. Even though the pacemaker is tiny, measuring one millimeter in thickness, it still delivers as much stimulation as a full-sized unit. The engineers published their findings in Nature and noted that the device works with both animal and human hearts. The team also reiterated that pediatric care is the primary use case here. About one percent of children are born with congenital heart defects, said Northwestern experimental cardiologist Igor Efimov, who co-led the study. The good news is that these children only need temporary pacing after a surgery. In about seven days or so, most patients hearts will self-repair. But those seven days are absolutely critical. Now, we can place this tiny pacemaker on a childs heart and stimulate it with a soft, gentle, wearable device. And no additional surgery is necessary to remove it. The development of this medical device was co-led by John Rogers, which is a familiar name in biomedical circles. Rogers has been behind a number of astounding innovations throughout the years. Hes advanced technology that could eventually give us invisibility cloaks and health-tracking tattoos. He also built a thumbnail-sized UV sensor and a circuit that dissolves in the body. That last one eventually led to this innovative pacemaker. Rogers imagines a world in which physicians inject a number of these pacemakers simultaneously, to enable sophisticated synchronization. This could help terminate arrhythmias, as different parts of the heart could be paced at unique rhythms. Because its so small, this pacemaker can be integrated with almost any kind of implantable device, Rogers said. Here, the tiny pacemakers can be activated as necessary to address complications that can occur during a patients recovery process. This versatility could eventually open up a diverse array of medical possibilities. The tech could be used to help nerves heal, treat wounds and block pain.This article originally appeared on Engadget at https://www.engadget.com/science/the-worlds-smallest-pacemaker-is-injectable-and-powered-by-light-153302491.html?src=rss
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