GentleYAG Laser System Candela Corporation
8501-00-1766 Revision FCONFIDENTIAL Page 8
The systems deliver laser energy at a wavelength of 1064 nm with a pulsewidth of
250 microseconds to three hundred milliseconds. The output of the laser is delivered
to the area of treatment through an optical fiber with a treatment handpiece attached
to its distal end. A trigger (fingerswitch or footswitch) controls the delivery of
pulses. The laser delivers pulses at a rate of up to ten per second, depending on the
pulsewidth, rep rate and spot size setting.
The user selects the desired energy density (fluence) level, and enables or disables the
laser at the control panel.
The laser systems are equipped with interlocks that disable laser emissions if the
remote interlock circuit is open or the fiber is removed.
A green aiming beam is provided to illuminate the treatment area. The aiming beam
and treatment beam are dimensionally identical, so the aiming beam can be used to
accurately define the treatment pulse location. The aiming beam is illuminated when
the laser enters the Ready State.
The laser systems can be purchased with an optional skin cooling device referred to
as the dynamic cooling device (DCD). The DCD consists of an electrically controlled
spray nozzle located at the treatment end of the handpiece, a cryogen reservoir
canister and associated electronic control circuitry located in the top of the system
enclosure.
The cryogen, GentleCool™, is stored under pressure in the reservoir canister and
brought to the solenoid valve via tubing. When the DCD system is on, depressing the
Dynamic Cooling
Device (DCD)
