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Eternal implant the size of a grain of sand

22.08.2016

Despite the fact that recently the ideas of transhumanism are gaining more and more popularity, many people are not yet ready to implant implants in their bodies. However, a recent study from the University of California at Berkeley suggests that the future may be closer than we think.

University engineers have developed a tiny, grain-sized sensory graft that has already been successfully implanted into muscle tissue and peripheral nerves in rats. "Neural dust" allows you to monitor vital signs in real time, and can become a new milestone in implantation and prosthetics technologies. Such systems could help clinicians perform more precise microsurgical procedures and patients better control over prostheses.

The transducer, which is about 3 mm long, contains a piezoelectric crystal that converts ultrasonic vibrations into electricity, which powers the transplant, the researchers said. The sensors are driven by pulses of ultrasound emitted every 100 microseconds, allowing researchers to work in real time. Ultrasound was chosen because it allows working with "extremely small implants", unlike radio waves.

“Before that, specialists had no way to telemetry from inside the human body in this way, because they could not locate something subminiature in the body. But now I can use this tiny sensor to work with organs and even nerves, without much work to get the right data," says Michelle Maharbitz, one of the study's lead authors.

The sensor is coated with a layer of epoxy resin, and scientists hope that a later generation of sensors can exist inside the human body for decades without being degraded or rejected by the body.

"If a patient needs to control a robotic arm with a computer, they can simply implant an electrode into the brain and it will last a lifetime," explains Ryan Neely, a graduate student in the Department of Neuroscience at the University of California at Berkeley.

In the future, the researchers hope to shrink their invention even further. According to the Independent, they want to achieve a size of 50 microns, which will allow it to be used in the brain with almost no restrictions.

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