The laser light produced by the excel HR is invisible infrared (755
nm and 1064 nm) light that can cause permanent eye damage.
Never look directly into the handpiece even when wearing
protective eyewear. Never look directly into the treatment beam or
at scattered light from metallic or other reflective surfaces. Both
direct and reflected laser light may contain sufficient energy to
cause permanent eye damage.
50
EXCEL HR OPERATOR MANUAL
D1796, REV. D, 12/16
All personnel operating or in the vicinity of the excel HR, including the patient, staff personnel and
observers, should wear protective eyewear with sufficient protection (i.e., optical density specified in the
Eyewear Specifications section, or greater) for the 755 nm and 1064 nm wavelengths. The eyewear
should have guards on both sides to protect the eyes from lateral exposure.
Never allow anyone without proper protective eyewear near the
system
while in use.
Guidelines and information on the safe use of lasers, and the safe
use of lasers/laser systems in
diagnostic and therapeutic areas, can be found in the following:
• The
American National Standard for the Safe Use of lasers in Health Care Facilities (ANSI
Z136.3-2005).
• The
American National Standard for Safe Use of Lasers (ANSI Z136.1-2007).
• European Standard EN 60825-1:2014, Annex A.
The ANSI and the European standards describe the following terms
in the description of laser hazards:
• Maximum Permissible Exposure (MPE) - The highest level of laser radiation to which a
person may be exposed without hazardous effect or adverse biological changes in the eye
or skin.
• Nominal Ocular Hazard Distance (NOHD) -
The distance along the axis of the
unobstructed beam beyond which exposure during normal operation is not expected to
exceed the appropriate MPE. This distance is measured from the laser aperture.
• Nominal Hazard Zone (NHZ) -
The space within which the exposure level during normal
operation exceeds the applicable MPE. The outer limit of the NHZ is the NOHD.
For specific values, see the Eyewear Specifications section of this manual.
In addition to providing the required safety eyewear, take the following
steps to secure the treatment
room or controlled treatment area:
1. To alert personnel before they enter the controlled area, place a warning sign on the
outside of the treatment room door when the laser is in use.
WARNING
WARNING
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