Physiotherapy
Shortwave Diathermy
 
 
 
  Shortwave Diathermy- Models
 
 

• GALVOTHERM 250
• GALVOTHERM 500
• GALVOTHERM 500 (CONT CUM PULSE)
• GALVOTHERM 1000 (CONT CUM PULSE)

 
 

Shortwave therapy is the application of electromagnetic energy to the body at shortwave frequencies. At these Shortwave frequencies the electromagnetic energy is converted to thermal energy by the induction of circulating currents in the tissue and dielectric absorption in insulating tissue. Shortwave therapy units may produce output power levels of up to 500W for Continuous providing significant heating to the area of the body being treated and upto 1000w incase of pulse. For this reason the treatment is often called shortwave diathermy (through heating).

Shortwave therapy equipment normally uses the band centred on 27.12 MHz. This corresponds to a wavelength of approximately 11 metres. The benefits associated with the heating effect - encouragement of healing, pain relief, reduction of muscle spasm, increase in mobility etc.

The difference between shortwave therapy and other methods of heating is that it provides “deep heating”. Other techniques such as infrared therapy, hot-packs etc., provide the heat externally whereas shortwave therapy generates heat within the tissue.

PULSED SHORTWAVE DIATHERMY

It employs the same operating frequency as traditional SWD ie. 27.12MHz. The output from the machine is pulsed such that the ‘on’ time is considerably shorter than the ‘off’ time, thus the mean power delivered to the patient is relatively low even though the peak power (i.e. during the on pulses) can be quite high (peak power goes, go up to 500W / 1000W).

 


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