For applications on very small areas, where deep penetration is advised, without applying the pulsing magnetic field to surrounding tissue, a small probe is required.
Usually these kind of probes contain a coil scattering the magnetic energy around because of the probe's construction, see above.
The field is distributed mainly around the probe and just a very small amount of the generated energy is actually available at the tip of the probe while penetration into the body is negligible.
If the PEMF intensity generated by the device is very low from the beginning a conus form (see above) tries to concentrate the energy however the distance between the top of the conus and the coil itself located inside the probe, is too large to have sufficient energy left at the tip, to obtain any deep intensity penetration into the body and such a probe cannot have the desired effect.
In order to be effective the pulsed magnetic field needs to be directed directly from the top of the probe into the body.
This requires location of the PEMF coil directly at the top of the probe with the focus and concentration of the electromagnetic field energy directly forwards, at the tip surface.
The picture above shows the magnetic energy distribution where the strongest field is white/yellow decreasing towards blue further away from the probe.
Only a PEMF probe designed in this way will be able to effectively treat sinusitis, osteomyelitis of jaw bones, and have dental applications.
Such a PEMF probe can then also be used by acupuncturists replacing the need for needles, which is important where patients are afraid of skin penetration and for children applications.