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LTS-60 Power Scanning Laser

TECHNICAL FILE

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Electromedical Devices, Elite Line, Products

The Fisiocomputer LTS-60 – Power Scanning Laser is an apparatus for the treatment of the patient by means of a LASER beam, exclusively therapeutic purposes .

 

It should be noted that the laser beam (“Light Amplification by Stimulated Emission of Radiation”, meaning ” Light Amplification by Stimulated Emission of Radiation “) is essentially a light beam, whose main features lie in the monochromatic (like saying that is emitted only one light frequency, unlike the light we are used which is always broad spectrum) and in the geometric consistency (ie, just thanks to the previous feature , you can generate laser beams with angles of opening very small, typically for medical applications in the order of one or two mRad).

 

From these two characteristics derives the fact that with a laser light is able to easily obtain power density much greater than with traditional light sources, and this fact, in addition to being used in various fields industrali, space and military, is several years also used in the medical field, albeit in different application fields.

It stands out, in fact, the so-called “power- laser ” (which mainly generates effects of photo- evaporation and photo -chemical reactions: an example is the laser scalpel) from “mid- laser ” and ” soft laser” (who exclusively bio stimulating effect).

 

The other versions , however, (by allaLTS LTS -05 -20) given that employ laser diodes whose emission falls in the infrared, require light guide (visible) that is implemented with the use of a laser diode that emits red light.

 

Given that these versions have powers of the beam of work considerably higher (“mid- laser”), should always be remembered that , although the mode of action are similar to the version of lower power , these powers the thermal effect is not completely negligible (especially if it adopts the continuous emission with small deflections ), for which particular attention is required by the operator in the dosage of energy (which depends on the combination of percentage of the maximum power, frequency, pulse repetition, scan area of the beam).

 

The main reason that drives the adoption of powers of work is still further (it is well to remember) the greater rapidity of therapeutic action, and ultimately the abbreviation of treatment times

The level and nature of the issue dell’LTS :

 

The “fisiocomputer LTS” emits, in all its versions, a laser beam scanning, that is deflected automatically by a pair of mirrors placed inside in the vicinity of the laser aperture present posteriorly.

 

The LTS -00 uses a He-Ne tube that emits a power of 5 mW (continuous in time and not adjustable in intensity) at a wavelength of 633 nM and with a difference of 1 mrad.

 

The IR versions , however, all use a laser diode that generates the beam – guide at a wavelength of 635 nM, with a power of 5mW.

 

The beam of the work is instead obtained by an array of laser diodes emitting at the wavelength of 808 nm (infrared). The maximum output power varies from 500 mW CONTINUOUS version of the LTS- 05 to 2 W CONTINUOUS version of the LTS -20. For the laser working can be adjusted both the peak power (from 0 to 100% of nominal) that the emission mode, selectable between continuous and pulsed (in this case from 1 to 5000 Hz , with adjustable duty cycle from 5% to 95 % in steps of 5%).

 

It should be remembered that the versions LTS- 00 and LTS- 05 are Laser Class 3B.

Instead, the other two versions (LTS -10 and LTS- 20) are Laser Class 4.

 

A64 – Mode of delivery of the laser beam :

 

For all versions of the beam is deflected automatically both in a “vertical” (ie in the direction of “depth” of the apparatus) in the sense that the “horizontal” (ie in the lateral direction). For each of the two deflections, which are operating simultaneously, are adjustable by the operator is the absolute positioning of the beam scan width.

 

 

The sweep speed is fixed to the vertical (and is such that even by setting the maximum amplitude of the human eye perceives a continuous line, and then the resulting frequency is always higher than the frequency of fusion of the retina , generally estimated at 16 Hz) and adjustable for horizontal (this time on much lower values, so that the resulting frequency is always such as to sense the lateral movement of the vertical line). The horizontal scanning speed is adjustable between 0.25 and 2 rad/sec (which is roughly equivalent to a range of horizontal scan times ranging from one to eight seconds for the maximum deflection).

The laser beam can exit the rear opening within a solid angle contained in the horizontal limit of 60 ∞ (+30 ∞ with respect to the central axis) and the vertical limit of 55 ∞ ( from 30 ∞ to 85 ∞ to get up from the vertical to the ground).

 

Within this solid angle setting limits for deflections ranging from 0 ¬∞ to the theoretical maximum (depending on the opening Laser). If both width adjustments are set to minimum ( 0 ∞), the scan is reduced to a fixed point .

 

Like all products of J&S also “fisiocomputer LTS ” have a number of preset protocols specifically designed for the different diseases to treat.’