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A transcutaneous electrical nerve stimulation (TENS or TNS) is a device that produces mild electric current to stimulate the nerves for therapeutic purposes.TENS, by definition, covers the complete range of transcutaneously applied currents used for nerve excitation, but the term is often used with a more restrictive intent, namely, to describe the kind of pulses produced by portable ...
The key point is that the internal unit does not have a battery and it should be able to extract the required energy. To reduce the risk of infection, data is transmitted wirelessly along with power. Inductively coupled coils are good candidates for power and data telemetry, although radio-frequency transmission could provide better efficiency ...
Electroanalgesia is a form of analgesia, or pain relief, that uses electricity to ease pain and belongs to a type of neurotherapy.Electrical devices can be internal or external, at the site of pain (local) or delocalized throughout the whole body.
This is distinct from transcutaneous electrical nerve stimulation (TENS), in which an electric current is used for pain therapy. "The main difference is the desired outcome. TENS unit is a medical device for pain relief. The desired outcome is to reduce pain by stimulating different nerve signals.
A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.
Maximum recommended B-field is a complicated function of frequency, the ICNIRP guidelines for example permit RMS fields of tens of microteslas below 100 kHz, falling with frequency to 200 nanoteslas in the VHF, and lower levels above 400 MHz, where body parts can sustain current loops comparable to a wavelength in diameter, and deep tissue ...
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