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Generally speaking, when purchasing a Laser therapy unit, one needs to ascertain what the main mode of therapy will be. i.e. will it be predominantly used for Acupuncture point treatment, or will the predominant application be Musculo-skeletal injuries, or Wound healing such as leg ulcers.

If Acupuncture point treatment is the main application, one can consider a lower output power of 5, 10, or 20mw, with a wavelength of 635nm, 660nm, or 670nm, all of which are in the visible red band.

Acupuncture point treatment requires the ability to Sedate or Tonify the point, with reasonably short application times eg. 5-10 seconds to Tonify, or 20-25 seconds to Sedate.

By using lower output powers, with small beam diameters of 1mm approx:, one can achieve the required power densities to enable these treatment times.

For the deeper points, or Ah-Shi points, the unit can be supplied with a second probe operating in the 785nm or 830nm Infra-red range with up to 500 milliwatt of output power, and again with a suitably collimated beam diameter to give the same treatment times.

This type of dual unit is also very suitable for Wound healing.

This area of therapy may well apply to Physiotherapy, Chiropractic, Osteopathic, Sports medicine, Podiatry, and Equine Veterinary.

Near Infrared laser units of 780nm, 808nm, 830nm, or 860nm with output powers of up between 200mw to 500mw are the preferred choice.

The near Infra-red wavelength allows for deeper penetration into the tissue, and the higher output powers along with appropriate beam diameters, again keep treatment times short whilst allowing for the higher Dosages required.

Small animal Veterinary, including Canine Therapy, generally only need 50mw to 100mw output power due to the lesser tissue bulk involved.

Again, due to the likelihood of wound management, Veterinary units can be supplied with a Visible probe as well.

Most modern Low Level Laser units utilise Laser Diodes to supply the Laser energy. Laser Diodes are small and compact, have low power supply requirements (typically 3 Volts DC at up to 1 Amp), long operational life, and are readily obtainable in various wavelengths and output powers.

Generally speaking, the higher the output power, the higher the cost, and in the visible range, the lower wavelength of 635nm (same as the earlier and popular Helium Neon units), can also incur an increase in cost.

The low power supply requirements enable AC Mains and/or Battery operation, thus enhancing portability for field or domiciliary application.

Microprocessor controlled systems are extremely reliable with accurate parameter control, and again have a long operational life with minimal service requirements.

These systems also allow for ease and simplicity of operation.

Self contained probes, with plug-in cables, also overcome the inherently high wear and tear factor associated with cables. The operator can simply dispose of a broken cable, and use a new one as required, with no loss of use due to service requirements.

Systems should be Y2K compliant and meet the required EM controls.

All operation Manuals should be fully self explanatory, with adequate diagrams of controls etc, and full explanation of Safety requirements.

Secure Probe holders should be incorporated in the unit.

Carry cases should provide adequate protection from the rigors of transport.

Professional advice on application should be readily available via easy means, eg email, Phone, or Facsimile with fast reply times.