One of the most important tasks in ensuringThe effective operation of cardio and neurological stimulants implanted in the human body is the supply of energy for the operation of the device. Replacing the batteries requires surgery, and external power supplies connected to the implant with wires are a source of infection.
Scientists from South Korea working at Songyungwan University have proposed a fundamentally new way of transferring energy to implanted devices using ultrasound from an external source.
Currently, a prototype device has been created,which allows you to supply energy inside the body without removing the implant. A non-invasive method will avoid the risks associated with repeated surgery and prolonged wound healing.
When implementing the applied methodology, it is useda generator made in the form of a square with a side of 40 mm, capable of converting kinetic energy into electricity using the triboelectric effect and electrostatic induction.
The basis of the generator is perfluoroalkyla film with a thickness of 50 micrometers, two electrodes - a working copper-gold and control copper, battery and control unit. The recharging process begins with the generation of ultrasound with a frequency of 20 kHz, which initiates the oscillation of the film and its contact with the working electrode, as a result of which negative charges are concentrated on the film and positive on the electrode. A potential difference arises between the working and control electrodes. After the film is separated from the working electrode, current is generated in the opposite direction.
The device has been tested on pigs, whichimplanted the device to a depth of 5 and 10 mm. With increasing depth of "immersion" in the body, the voltage generated in the device is significantly reduced. However, scientists claim that the device can already generate enough energy to power some implantable pacemakers.