System for power supply and communication with several implants at the same time created.

Currently, implantable devices are widely used in medicine, the control and supply of energy to which is carried out using various wireless technologies. These implants stimulate muscle tissue, neurons of nerve tissues, they measure various parameters of the body’s vital activity using the energy of light, magnetic field or radio waves emitted by an external transmitter. And, as a rule, each type of implantable device requires its own separate transmitter operating at a certain frequency, which is often not very convenient. Now, doctors will have the ability to sequentially activate several implants connected to one single receiving and transmitting device.

In the case of normal use of implantable devices, it is not necessary to install several implants at once. But there are rare cases when, for example, it is necessary to ensure the passage of signals through the spinal cord bypassing the area damaged as a result of injury or illness, giving the patient the opportunity to walk again or move previously paralyzed limbs. Also, this technology can be very useful when it becomes necessary to stimulate individual chambers of the patient’s diseased heart at different times in order for it to work properly.

The new experimental wireless system was created by researchers at Rice University and is designed to work with implants driven by an external alternating magnetic field. This magnetic field is usually generated by a special transmitter powered by a rechargeable battery that the patient wears around his belt.

At this time, the distance at which the wireless system can operate is only 60 millimeters, but this value will be increased later as improvements and modifications to the system are made.

When the transmitter starts generating electromagnetic pulses, all implants connected to the receiver are activated simultaneously. Nevertheless, all these implants do not start working immediately, “tearing apart” the crumbs of energy that the receiving device can generate, each implant is programmed to operate with a strictly specified delay from the moment the first pulse is received. And it turns out that after the start of work, all the implants are triggered one by one, and the delay between these triggers is calculated in tens and units of milliseconds, which in the time frame of life processes can be considered almost instantaneous triggering.

The effectiveness of this approach has been confirmed so far only in laboratory conditions on experimental rodents and on hydras, tiny freshwater living creatures with several tentacles.

“Through our work, we have demonstrated that it is possible to program several implantable devices so that they perform a synchronized and coordinated procedure of complex stimulation,” the researchers write, “We synchronize the devices so that their joint work resembles the sound of a harmonious symphony orchestra. This, in turn, gives us a huge number of degrees of freedom, allowing us to cover almost all areas, from stimulating the heartbeat to ensuring the passage of signals through damaged areas of the spinal cord ”.

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