Conventional and Convertible Blades-For
correct illumination alignment and assurance
of watertight seal during immersion/autoclave,
use only Welch Allyn #04700 and #04800
To remove, rotate lamp counterclockwise
until free. Replace.
Verify lamp is sufficiently tightened before use.
CAUTION: Be sure lamp’s glass envelope
is clean and free of any fingerprints
after assembly. If necessary, the glass
may be cleaned with a soft cloth or
cotton ball moistened in alcohol.
NOTE: With some convertible blades
the light carrier must be removed to
Standard Laryngoscope Reference Chart
Macintosh - #1
Miller _ #0
E-Macintosh - #1
Flagg - #0
Guedel - #1
Wisconsin - #1
Standard Hook-on Handles
Locking Screw Assembly 690015-501
Welch Allyn Standard Laryngoscope Handles
Battery handles are not designed for cold soak disinfection or
autoclave sterilization processes. Exposure to these environments will severely damage the electrical components of the
New Welch Allyn standard battery handles are compatible
with steam autoclave sterilization. (Please follow the same
parameters as outlined under laryngoscope disinfection/
sterilization on the reverse side of these instructions.) These
handles can be identified by the term (autoclave) located on
one side of the hook on neck. Prior to autoclaving, unscrew
the bottom cap and remove the batteries. The main handle
and cap will also withstand exposure to ethylene oxide.
Unscrew bottom cap of handle and remove
Alkaline batteries have been supplied with
your handle for maximum performance
(nickel/cadmium with rechargeable handle)
and are recommended as replacements.
Ordinary carbon-zinc batteries may also
Replace with appropriate size battery and
replace bottom cap.
Confirming with ASTM F 965
Welch Allyn Standard Laryngoscope Blades
Care and Maintenance
Welch Allyn laryngoscope blades are crafted
from enduring stainless steel. To insure
maximum life and performance, the following
instructions should be strictly adhered to.
There are two styles of standard Welch Allyn
laryngoscope blades-Conventional and
In the Conventional blades, the lamp socket
and wires are an integral part of the blade.
In the Convertible style, the light carrier
(which contains the lamp and wires) can be
removed from the blade for cleaning and
replacement. To determine which blade style
you are referencing, please refer to Figure 1.
After cleaning, rinse blades thoroughly, and
dry prior to disinfection/sterilization.
Immediately after use, blades should be rinsed
in clean tap water to remove any residue.
External surfaces should then be gently
scrubbed in soapy water, with a soft brush,
to provide a thorougti physical cleaning
NOTE: If germicidal solutions are required
for cleaning, please contact Welch Allyn
WARNING: ULTRASONIC CLEANING IS
Prior to cleaning, the light carrier should be
removed from the blade following the procedure outlined in the light carrier replacement section. Both blade and light carrier
should then be cleaned following the procedure outlined under Conventional Blades.
This process will result in removing any
debris trapped between the carrier and the
blade, facilitating the disinfection/sterilization
Cold Soak Solutions-The blades are compatible with 2% gluteraldehyde solutions (ex.
Cidex, Sporicidin). Prior to immersion, verify
that the lamp is secure. Immersion with lamp
removed or improperly secured will result
in damage to the electrical contacts. For
recommended exposure times and solution
strength, contact solution manufacturer.
WARNING: DO NOT IMMERSE BLADES
IN BLEACH, BETADINE OR PEROXIDE
SOLUTIONS. DOING SO WILL SEVERELY
After soaking, the blades should be thoroughly
rinsed in sterile water to remove any residual
solution. Dry with sterile cloth.
Steam Autoclave--is appropriate, but will
greatly reduce the life of the electrical
components. If autoclaving, verify that the
lamp is secure.
NOTE: Autoclaving with lamp removed
will result in severe electrical damage.
Verify lamp is secure.
NOTE: Do not exceed temperature of
270” and pressure of 28 p.s.i.
WARNING: FLASH AUTOCLAVING AND
HOT AIR STERILIZATION SHOULD BE
AVOIDED. THESE PROCESSES WILL
DAMAGE THE INSTRUMENT.
Ethylene Oxide-is appropriate.
NOTE: Do not exceed temperature of
130o and pressure of 8 p.s.i.
Prior to disinfection/sterilization, reassemble
the blade following the procedure outlined in
the light carrier replacement section.
Disinfect/sterilize blades using the same
guidelines/warnings outlined under
Light Carrier Replacement
Convertible Blades only (See Figure 1)
1. Remove locking screw by rotating counterclockwise with a standard screwdriver
2. Pull light carrier away from base of
laryngoscope and slide distal end of
carrier out of blade.
3. Position new carrier and replace
4. Rotate locking screw clockwise
Laryngoscope blades and handles should
always be tested after cleaning/disinfection/
sterilization and prior to use.
To check, connect the laryngoscope blade
to the handle and pull open to the on position
If the unit fails to light or flickers, check the
Printed in the U.S.A
Be sure adequate supplies of spare lamps,
batteries, and replacement parts are readily
If problem still persists, contact Welch Allyn
4341 State Street Road
P.O. Box 220
Skaneateles Falls, NY 13153-0220
Telephone: (315) 685-4560