Thousands of patients with severe hearing difficulties worldwide rely on external hearing aids or devices implanted in the ear to listen to the outside world every year. Although the cochlear implant device has achieved some success after decades of development, this device still has to run on batteries, which is very troublesome. But this problem may be about to be solved: the MIT research team has developed a tiny chip that only needs a weak voltage to operate, and can get power from the ear to drive the hearing aid device.
The cochlea of ​​the human ear has a battery-like structure, which is a natural living battery with positive and negative ions, which can generate a weak voltage. Although the medical community has affirmed this fact as early as 60 years ago, no one has tried to use it to supply power. MIT researchers hope to use this voltage to power the microchip they have developed, so as to drive the normal operation of the hearing aids in the ear.
It is reported that the researchers equipped the chip with several low electrical resistances and a low-power radio transmitter. It only needs to extract a small amount of energy from the current in the ear, and it will not interfere with hearing. At present, they have implanted this microelectronic chip in the guinea pig's ear similar to the internal structure of the human ear to conduct experiments, and the result is very successful: the chip has been operating normally for 5 hours in the guinea pig ear, and the external receiver The data also shows that the hearing of guinea pigs is not affected by the chip.
At present, this research is not mature enough. The researchers worry that the chip staying in the human ear for too long may damage the internal structure, so they need to conduct more tests and improvements on the chip. In the future biochemical field, this technology will be very promising, and it is impossible to say that every cell in the human body will become an independent power generation device in the future.
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