LUMENIS Novus Spectra, Operator'S Manual

Page: 79 / 110

General Information 79
Novus Spectra
0642-543-01, Rev A, 12/02
Laser plume precautions
CAUTION - For the majority of ophthalmic procedures, there is no laser
plume generated. However, the user should be aware that laser plumes do
present a potential hazard. Plumes may be potentially hazardous, both in terms
of particulate matter and infectivity. Special care must be taken to limit the
exposure of both patient and surgical staff to any laser plume smoke or vapor.
CAUTION - Surgical staff should wear surgical masks that remove particles as
small as 0.3 um. Latex surgical gloves should also be worn, as current evidence
suggests that the hands are the most likely site of infective viral transmission
during laser surgery. Gowns, caps, and eyewear that protect against splatter
and laser light should all be worn.
CAUTION - Although it is highly unlikely that viable tumor cells occur in the
laser plume, it has been reported that intact viral DNA is liberated into the air
with the vapor of CO
2
laser-treated verrucae. In addition, exposure to CO
2
laser smoke has been shown to have harmful effects on the airway in animal
models. The solid-state 532-nm laser plume may have similar characteristics to
the CO
2
laser plume.
CAUTION - Laser plume may contain viable particulates.
CAUTION - If used, a smoke evacuation system should remove particles as
small as 0.3 um with 80% efficiency. The filter should be changed regularly in
accordance with the manufacturer's instructions in order to maintain full air
flow and prevent possible accumulation of infectious material.
Irradiance, fluence, and power
Refer to “Delivery Devices and Accessories” in this section, as well as to the
appropriate delivery device operator manual for additional details regarding
power and duration settings to achieve the desired irradiance or fluence.