UM-1151440EN, Rev. C, May 2016 A-1
Warning
● The Indications for Use and Safety and Regulatory sections of
this operator manual should be carefully read and
comprehended in their entirety before attempting to use the
laser system. Particular attention should be given to all
cautions and warnings pertaining to the safe use of the laser.
● The use of a laser instrument for an application is at the
physician’s discretion except in cases where the indication has
been contraindicated.
Successful clinical use of the laser depends upon the interaction of a
number of variables. These variables include the type of tissue, the amount
of tissue pigmentation, spot size, delivered power, pulse duration, and
incidence angle of the laser beam onto the target tissue.
Tissue effects are caused by the absorption of electromagnetic laser
radiation and its conversion to heat. Diffusion of heat through the tissue
depends on the thermal properties of the irradiated material. Pulse
parameters such as duration, interval, frequency and power may be
optimized for a desired tissue effect.
The irradiance (power density) required to elicit a specific tissue effect
depends on a multitude of factors, such as, but not limited to:
● Reflection coefficient at air/water interface with target tissue.
● Density and type of pigmentation at target tissue
● Opacities of media preceding target tissue
● Wavelength of the laser beam
● Spot size of the laser beam at target tissue
● Time dependent parameters (e.g., pulse duration)
● Blood flow
● Other factors that may influence heat diffusion
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