BR Surgical Catalog - page 6

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INSTRUMENT CARE
4
ENDOSCOPE CLEANING & STERILIZING INFORMATION
Cleaning:
The Endoscope has three optical surfaces that must be cleaned routinely to ensure both maximum transmission of illumination, and
a high quality image.
All should be cleaned with warm water and mild soap. If stains are still present, a mixture (1:1) of methyl alcohol and acetone may be used.
A fine woven cloth or lens tissue should be used for cleaning. Dry with a soft woven cloth. By reflecting light off all optical surfaces, you can
detect any foreign matter or scratches that would degrade image quality.
Note:
Any foreign matter present on the fiber surface after cleaning may tend to burn and discolor the surface when the high intensity lamp is in use.
Note:
To avoid fogging during surgery, the rear portion of the scope must be entirely free of moisture before attachment to the camera or coupler.
Extreme heat from steam autoclaving and high intensity lamp will cause debris on the optical surfaces to discolor, burn, and harden. The lock of the
endoscope should remain free of debris to ensure solid locking of components. Use a bristle brush with warm soapy water to clean these components.
Removing deposits on optical surfaces:
Due to insufficient cleaning or foreign matter in steam, deposits may develop on the three optical
surfaces during the autoclaving process. Any foreign matter remaining on the optical surfaces will reduce the optical performance of the
endoscopes and may lead to a cloudy picture. These deposits can easily be removed using the biocompatible polishing past which is enclosed
in the endoscope. To remove deposits, dab some polishing paste onto a clean cotton tabbed swab. Press gently onto the optical surface to be
cleaned and scrub the window in circles. Rinse the optical surfaces with tap water to remove any remaining polishing paste.
Note:
Cleaning with polishing paste should not be part of your routine cleaning procedures and should only be preformed when the range – as viewed
through the scope – is cloudy.
Chemical Disinfection and Steris Process:
The scope is immersible and should be disinfected using the process obtained from the individual
chemical manufacturer. scopes are materially compatible with the Steris process. The endoscope should be rinsed after soaking with sterile
water and dried with a sterile cloth.
Sterilization:
Important: Be sure that the scope is cleaned thoroughly before sterilizing.
The endoscopes should be sterilized or disinfect-
ed in a container which secures the instrument in place. Be sure the needle portion does not experience any force or stress which can destroy
the delicate internal lenses.
Gas Sterilization:
Follow standard hospital procedures for gas sterilization. Place scopes separately from instruments in a container approved
for general use with gas sterilization (such as perforated metal tray), with gauze or loosely woven cloth inserts folded around each item and
stabilized to avoid movement.
Following 10/90 ethylene oxide/Oxyfume 2002 sterilization cycle is validated.
Preconditioning Parameters:
Temperature:
55+/-2ºC (131 +/-5ºF)
Relative Humidity:
>=35%
Vacuum:
21+/-1 in Hg
Pre-conditioning time:
1 hour
Autoclaving:
Caution: Scopes cannot be steam autoclaved unless “autocleavable” is engraved on the endoscope body. Otherwise this
method will permanently damage optical components.
Endoscopes must be carefully cleaned before autoclaving, as foreign matter will impede sterilization and harden into a crust which is difficult
to remove (refer to section 2). Endoscopes which are not cleaned properly before autoclaving will experience reduced optical performances
and shortened service lives.
Place clean endoscope in a suitable sterilization tray. A suitable tray will hold the endoscope firmly but gently. The endoscope should not be
allowed to be in intimate contact with the metal tray. This will result in direct heat transfer from the tray to the instrument, which can cause
damage to the instrument.
Gravity Steam Sterilization:
Follow standard hospital procedure for gravity steam sterilization (Double wrapped in muslin) at 132ºC - 135ºC
(270ºF - 275ºF) for 10 minutes.
Pre-vacuum Sterilization:
Follow standard hospital procedure for pre-vacuumed steam sterilization (double wrapped in muslin) at 132ºC -
135ºC (270ºF - 275ºF) for 3 minutes.
Standard Procedures for Steam Sterilization:
If these procedures are not observed, the endoscope may be destroyed and the warranty may
be voided. After completing the sterilization, the endoscope should be cooled slowly in the autoclave to room temperature. Do not immerse
or rinse instruments in cold water or any other liquid to accelerate cooling.
Note:
Sterilizer functioning should be monitored at regular intervals with biological indicators to ensure products have been subject
to sterilization conditions.
Warning:
High-energy radiated light emitted from illuminating fiber at the distal end of the scope may give rise to temperatures
exceeding 41ºC within 8 mm in front of the scope. Burns my occur if you leave the tip of the scope in direct contact with patient tissue
or combustible materials. Lower the light source output when working in close proximity to the object.
Sterilization Parameters:
Ethylene Oxide Carrier:
Oxyfume 2002
Temperature:
55 +/- 2ºC (131 +/- 5ºF)
Relative Humidity:
>=35%
Pressure (PSIG Start):
19 +/- 1 PSIG
Ethylene Oxide Concentration: 736 mg/l
Gas exposure time:
(full cycle)
Aeration:
11 hours at 54ºC (129ºF) minimum
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