GIF TYPE x190 series EVIS EXERA II GASTROINTESTINAL VIDEOSCOPE Reprocessing Manual July 2013

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Contents

Contents

Chapter 1 General Policy ....................................................................... 1

1.1

Instructions ............................................................................................................... 1

1.2

Importance of reprocessing .................................................................................... 2

1.3

Signal words ............................................................................................................. 2

1.4

Precautions ............................................................................................................... 3

1.5

Reprocessing before the first use .......................................................................... 7

1.6

Reprocessing and storage after use ...................................................................... 8

1.7

Reprocessing before patient procedure ................................................................ 8

Chapter 2 Function and Inspection of the Accessories for

Reprocessing ..........................................................................9

2.1

ETO cap (MB-156) ..................................................................................................... 9

2.2

Channel plug (MH-944) .......................................................................................... 10

2.3

Injection tube (MH-946) .......................................................................................... 11

2.4

Channel cleaning brush (BW-20T) ........................................................................ 13

2.5

Channel-opening cleaning brush (MH-507) ......................................................... 15

2.6

Auxiliary water tube (MAJ-855) ............................................................................. 16

2.7

Suction cleaning adapter (MH-856) ...................................................................... 17

2.8

AW channel cleaning adapter (MH-948) ............................................................... 18

2.9

Single use combination cleaning brush (BW-412T) ............................................ 19

2.10 Auxiliary water inlet cap (MAJ-215) ...................................................................... 22

Chapter 3 Compatible Reprocessing Methods and

Chemical Agents ...................................................................23

3.1

Compatibility summary .......................................................................................... 23

3.2

Water (for reprocessing) ........................................................................................ 26

3.3

Detergent solution .................................................................................................. 26

3.4

Disinfectant solution .............................................................................................. 26

3.5

Rinse water ............................................................................................................. 27

3.6

Alcohol .................................................................................................................... 27

3.7

Ethylene oxide gas sterilization ............................................................................ 28

3.8

Steam sterilization (autoclaving) .......................................................................... 30

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Contents

Chapter 4 Reprocessing Workflow for Endoscopes and

Accessories...........................................................................31

4.1

Summary of reprocessing workflow ..................................................................... 31

4.2

Workflow for manually cleaning and disinfecting endoscopes and

accessories ...............................................................................................................32

4.3

Workflow for cleaning and disinfecting endoscopes and accessories

using an AER/WD .....................................................................................................34

4.4

Workflow for manually cleaning and sterilizing endoscopes and

accessories ...............................................................................................................36

Chapter 5 Reprocessing the Endoscope

(and related reprocessing accessories) .............................39

5.1

Summary of reprocessing the endoscope ........................................................... 39

Endoscope model-specific reprocessing ............................................................................. 41

5.2

Preparing the equipment for reprocessing .......................................................... 42

Equipment needed .............................................................................................................. 42

5.3

Precleaning the endoscope and accessories ...................................................... 44

Equipment needed ..............................................................................................................

Preparation ..........................................................................................................................

Wipe the insertion section ...................................................................................................

Aspirate water ......................................................................................................................

Flush the air/water channel with water and air ....................................................................

Flush the auxiliary water channel ........................................................................................

Detach the suction tube and the water container’s metal tip from the endoscope ..............

Detach the endoscope from the light source .......................................................................

5.4

44

45

45

46

46

48

50

50

Leakage testing of the endoscope ........................................................................ 50

Equipment needed .............................................................................................................. 50

Detach the accessories from the endoscope ...................................................................... 51

Perform the leakage test ..................................................................................................... 52

5.5

Manually cleaning the endoscope and accessories ........................................... 54

Equipment needed ..............................................................................................................

Clean the external surface ...................................................................................................

Brush the channels ..............................................................................................................

Aspirate detergent solution through the instrument channel and the suction channel ........

Flush the air/water channel with detergent solution ............................................................

Flush the auxiliary water channel with detergent solution ...................................................

Immerse the endoscope and accessories in detergent solution ..........................................

Remove detergent solution from all channels .....................................................................

Dry external surfaces ...........................................................................................................

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64

67

68

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Contents

5.6

Manually disinfecting the endoscope and accessories ..................................... 71

Equipment needed ..............................................................................................................

Preparation ..........................................................................................................................

Flush all channels with disinfectant solution ........................................................................

Immerse the endoscope and accessories in disinfectant solution .......................................

Remove the endoscope and accessories from disinfectant solution ...................................

5.7

71

71

73

74

75

Rinsing the endoscope and accessories following disinfection ....................... 76

Equipment needed .............................................................................................................. 77

Rinse the endoscope and accessories ................................................................................ 78

Alcohol flush ........................................................................................................................ 80

5.8

Sterilizing the endoscope and accessories ......................................................... 82

Equipment needed .............................................................................................................. 82

Ethylene oxide gas sterilization of the endoscope and accessories .................................... 82

Steam sterilization (autoclaving) of the accessories ............................................................ 84

5.9

Presoaking the endoscope .................................................................................... 85

Equipment needed .............................................................................................................. 85

Chapter 6 Reprocessing the Accessories .......................................... 87

6.1

Summary of reprocessing the accessories ......................................................... 87

Equipment needed .............................................................................................................. 88

6.2

Manually cleaning the accessories ...................................................................... 89

6.3

Manually disinfecting the accessories ................................................................. 92

6.4

Rinsing the accessories following disinfection .................................................. 94

Rinse the accessories ......................................................................................................... 94

Alcohol flush ........................................................................................................................ 96

6.5

Sterilizing the accessories .................................................................................... 97

Ethylene oxide gas sterilization ........................................................................................... 97

Steam sterilization (autoclaving) .......................................................................................... 98

Chapter 7 Reprocessing Endoscopes and Accessories

Using an Automated Endoscope

Reprocessor/Washer-Disinfector ........................................99

7.1

Reprocessing endoscopes and accessories using an automated endoscope

reprocessor/washer-disinfector.............................................................................. 99

Chapter 8 Storage and Disposal ....................................................... 103

8.1

Precaution of storage and disposal ................................................................... 103

8.2

Storing the disinfected endoscope and accessories ........................................ 104

8.3

Storing the sterilized endoscope and accessories ........................................... 106

8.4

Disposal ................................................................................................................ 106

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1.1 Instructions

Chapter 1

1.1

General Policy

Ch.1

Instructions

• This manual contains the reprocessing methods recommended by Olympus for the

endoscopes and accessories listed on the front cover.

• This instruction manual contains essential information on reprocessing endoscopes and

accessories safely and effectively.

• Before reprocessing, thoroughly review this manual and the manuals of the reprocessing

equipment and chemicals that will be used for reprocessing. Reprocess all the devices as

instructed.

• Note that the complete instruction manual set for the endoscope and accessories consists of

this manual and the “OPERATION MANUAL” with your endoscope model listed on the cover.

Both manuals accompanied the endoscope at shipment.

• Keep this manual and all related manuals in a safe and accessible location (e.g., in the

reprocessing area).

• If you have any questions or comments about any information in this manual, or if a problem

that cannot be solved occurs while reprocessing, contact Olympus.

 Terms used in this manual

AER/WD:

AER and WD are abbreviations for Automated Endoscope Reprocessor and

Washer-Disinfector, which are used for reprocessing endoscopes and accessories.

Disinfection:

Some countries classify the disinfection level and define “high-level disinfection”, and other

countries do not. The term “disinfection” is used, including the meaning “high-level

disinfection”, in this manual. For disinfectant solution, follow the instructions as described

in Section 3.4, “Disinfectant solution”.

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1.2 Importance of reprocessing

Ch.1

1.2

Importance of reprocessing

The medical literature reports incidents of cross-contamination resulting from improper reprocessing. It

is strongly recommended that all individuals engaged in reprocessing closely observe all instructions

given in this manual and the manuals of all ancillary equipment, and have a thorough understanding of

the following items:

• Professional health and safety policies of your hospital

• Instruction manuals for the endoscope, accessories, and all the other reprocessing

equipment

• Structure and handling of the endoscope and accessories

• Handling of pertinent chemicals

When selecting appropriate methods and conditions for cleaning and disinfection and sterilization,

follow the policies at your institution, applicable national laws and standards, and professional society

guidelines and recommended practices, in addition to the instructions given in this manual.

1.3

Signal words

The following signal words are used throughout this manual:

WARNING

Indicates a potentially hazardous situation which, if not avoided, could result in

death or serious injury.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, may result in minor

or moderate injury. It may also be used to alert against unsafe practices or potential

equipment damage.

NOTE

2

Indicates additional helpful information.

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1.4 Precautions

1.4

Ch.1

Precautions

WARNING

• An insufficiently reprocessed endoscope and/or accessory may pose an infection

control risk to the patients and/or operators who touch them.

• The endoscope reprocessor, video system center, light source, front panels of

equipment, and/or mouthpiece may cause an infection control risk. Perform proper

cleaning and disinfection as described in their respective instruction manuals. A

tap, basin, and/or nozzle of pharyngeal anesthetic spray that medical personnel

come in contact with may cause an infection control risk as well. Perform proper

replacement, cleaning, and disinfection.

• All disinfection methods (whether performed manually or by an AER/WD), and all

sterilization methods (whether performed by ethylene oxide gas or steam) require

thorough prior cleaning of the instruments being reprocessed. If the instruments are

not adequately cleaned prior to disinfection/sterilization, these processes will be

ineffective. Immediately after each patient procedure and before

disinfection/sterilization, thoroughly clean the endoscope and the accessories used

with the endoscope.

• All channels of the endoscope, including the instrument channel and the auxiliary

water channel, and all accessories used with the endoscope during the patient

procedure, such as all valves and the auxiliary water tube (MAJ-855), must be

reprocessed after each patient procedure, even if the channels or accessories were

not used during the patient procedure. Insufficient reprocessing of these

components may pose an infection control risk to patients and/or operators.

• Residual disinfectant solution may cause adverse reactions in patients. Therefore,

rinse all external surfaces and channels of the endoscope and accessories

thoroughly with water to remove residual disinfectant solution following disinfection.

• The results of sterilization depend on various factors. These factors include how

the equipment was packaged and the placing and loading of the package in the

sterilization device. Verify the sterilization process using biological and/or chemical

indicators. Follow the guidelines for sterilization issued by national authorities,

professional organizations and infection control professionals, including the

frequency of the above verification, as well as the instruction manual for the

sterilization device.

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1.4 Precautions

Ch.1

WARNING

• Establish an internal system of identifying contaminated versus reprocessed

endoscopes and accessories to prevent both mix-ups and cross-contamination.

Some national or professional guidelines recommend separating dirty

(contaminated) area, clean area, and storage area. Touching a reprocessed

endoscope and/or accessories with contaminated gloves or placing them on a

contaminated hanger or surface, including letting them touch the floor, will

recontaminate them.

• Prior to each patient procedure, confirm that the endoscope and accessories have

been properly reprocessed and stored. If there are any doubts or questions,

reprocess them again before the patient procedure, following the instructions given

in this manual.

• Perform a leakage test on the endoscope after each precleaning procedure. Do not

use the endoscope if a leak is detected. Use of an endoscope with a leak may

cause a sudden loss of the endoscopic image, damage to the bending mechanism,

or other malfunctions. Use of a leaking endoscope may also pose an infection

control risk.

Leakage tester

Figure 1.1

• Store alcohol in an airtight container. Alcohol stored in an open container may

cause a fire hazard and may result in a loss of efficacy due to evaporation.

• Do not use the AW channel cleaning adapter (MH-948) for patient procedures. It

will cause continuous insufflation and could result in patient injury.

AW channel cleaning adapter (MH-948)

Figure 1.2

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1.4 Precautions

Ch.1

WARNING

• The accessories listed on the front cover of this manual cannot be refurbished or

repaired and are intended to be replaced once they show any signs of wear and

tear. Should any irregularity be observed, use a replacement accessory instead.

Using defective accessories may cause equipment malfunction, reduce the efficacy

of reprocessing, present a risk to patients and/or operators, or damage the

endoscope and/or accessories.

• Single-use brushes, such as the single use combination cleaning brush

(BW-412T), are designed for cleaning only one endoscope and its related

accessories. Dispose of the single-use brush immediately after use. Using a

single-use brush to clean multiple endoscopes and/or accessories may reduce its

cleaning efficacy and may damage the brush. A damaged brush may break, which

can damage the endoscope or accessories.

• Patient debris and used reprocessing chemicals pose infection control risks. To

guard against contact with dangerous chemicals and potentially infectious material,

wear appropriate personal protective equipment during reprocessing. Such

protective equipment should include appropriate eyewear, face mask, cap,

moisture-resistant clothing, shoe covers, and chemical-resistant gloves that fit

properly and are long enough to prevent skin exposure.

• The reprocessing room must be adequately ventilated to minimize the risks from

chemical vapors.

• Always remove contaminated personal protective equipment before leaving the

reprocessing area to prevent contamination from spreading.

• Only Olympus-recommended or Olympus-endorsed AERs/WDs have been

validated by Olympus. When using an AER/WD that is not recommended by

Olympus, the manufacturer of the AER/WD is responsible for validating

compatibility of the AER/WD with each Olympus endoscope and accessory.

• Before using an AER/WD, confirm that it is capable of reprocessing the endoscope

including all channels and accessories. Be sure to attach all required

connectors/adapters. Otherwise, insufficient reprocessing may pose an infection

control risk. If you are uncertain as to the ability of your AER/WD to reprocess the

endoscope including all channels and accessories, contact the manufacturer of the

AER/WD for specific instructions and information on compatibility and the required

connectors/adapters.

• Instructions provided in this manual are not valid for Olympus devices repaired by a

non-Olympus facility. The Olympus recommended reprocessing procedures have

not been validated for reprocessing devices repaired by a non-Olympus facility. In

the event that your device has been repaired by a non-Olympus facility, contact the

repair facility for instructions regarding reprocessing.

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1.4 Precautions

Ch.1

WARNING

• Prions, which are the pathogenic agents of the Creutzfeldt-Jakob disease (CJD)

cannot be destroyed or inactivated by the reprocessing methods stated in this

instruction manual. When using the endoscope and accessories on patients with

CJD or variant Creutzfeldt-Jakob disease (vCJD), be sure to use them for such

patients only, or immediately dispose of them after use in an appropriate manner to

prevent the usage of exposed devices on other patients. For methods to handle

CJD, follow the respective guidelines in your country.

• The endoscope and accessories may be damaged by published methods for

destroying or inactivating prions. For information on the durability of Olympus

equipment against a particular reprocessing method, contact Olympus. In general,

Olympus cannot guarantee the effectiveness, safety, and durability of reprocessing

methods not described in this reprocessing manual. If you choose to use a

reprocessing method not recommended in this manual, the local institution and/or

physicians must assume responsibility for its safety and efficacy. Make sure to

carefully inspect each piece of endoscopic equipment for irregularities (damage)

prior to each patient procedure. Do not use the equipment if any irregularity is

found.

• Good quality control practices typically require appropriate documentation. Items

such as local SOPs (Standard Operating Procedures), confirmation of operator

training, routine testing of the disinfectant’s MEC (Minimal Effective Concentration),

confirmation of the disinfectant’s use-life, etc. should be documented as performed.

CAUTION

• Before immersing the endoscope in reprocessing fluids, confirm that the ETO cap

(MB-156) is not attached to the endoscope. If the ETO cap is attached, the

reprocessing fluids will be able to penetrate the inside of the endoscope, and it can

be damaged.

• When aerating or irrigating the endoscope channels, the air or water pressure must

not exceed 0.5 MPa (5 kgf/cm2, 71 psig). Higher pressures may cause damage to

the endoscope.

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1.5 Reprocessing before the first use

Ch.1

CAUTION

• When reprocessing an endoscope that has a flexibility adjustment mechanism,

make sure that the insertion tube is set to its most flexible condition (indicated by

the “” mark on the flexibility adjustment ring). If the endoscope is reprocessed

while the insertion tube is in a rigid condition, the endoscope may be damaged.

“” mark

Flexibility adjustment

ring

Figure 1.3

• Store spare accessories in their original packaging to prevent damage.

• To prevent damage, do not apply excessive force to the endoscope and

accessories during reprocessing.

• Vapors from disinfectant solution and alcohol may damage electronic devices such

as computers. Properly manage the quality and durability of the devices used in

reprocessing rooms and the ventilation performance of the rooms.

1.5

Reprocessing before the first use

New endoscopes, repaired endoscopes, accessories, and the carrying case for endoscopes are not

reprocessed prior to shipping from Olympus, regardless of whether those instruments are for new

purchase, demo, or loaner purposes. Reprocess all such endoscopes and accessories received from

Olympus according to the instructions given in this manual before storage and before using them in a

patient procedure.

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1.6 Reprocessing and storage after use

Ch.1

1.6

Reprocessing and storage after use

WARNING

• Do not reuse rinse water.

• Disinfectant solution is only effective when used according to the disinfectant

manufacturer’s instructions. Follow the manufacturer’s instructions regarding

activation (if required), concentration, temperature, contact time and use life

required to achieve disinfection.

• If the disinfectant solution is reused, check its efficacy by proper methods, such as

using a test strip, according to the disinfectant manufacturer’s recommendations

prior to use.

• Do not reuse alcohol.

• Alcohol is not a sterilant or high-level disinfectant.

• To maintain sterility of equipment following sterilization, use sterile packaging and

wraps according to national guidelines.

1.7

Reprocessing before patient procedure

WARNING

• Improper storage practices, such as not thoroughly drying external and internal

surfaces (lumens) prior to storage, will lead to an infection control risk.

• Improper handling, such as touching a reprocessed endoscope and/or accessories

with contaminated gloves, placing a reprocessed device on a contaminated hanger

or surface, allowing devices to touch the floor, etc. will recontaminate the device.

NOTE

Some national or professional guidelines recommend reprocessing endoscopes

prior to their first use of the day.

Confirm that the endoscope and accessories have undergone proper reprocessing following their last

use and that they have been stored properly. Check the storage period of reprocessed endoscopes,

and check for surface contamination (e.g., dust). Check the expiration date marked on all items and

check for tears or breaches in the sterile packaging. If there are any doubts or questions concerning

whether a device is contaminated, reprocess it again following the instructions given in this manual.

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2.1 ETO cap (MB-156)

Chapter 2

Function and Inspection of

the Accessories for

Reprocessing

Ch.2

Certain accessories are required for reprocessing the endoscope. This chapter describes the function

of these accessories. It also describes how to inspect these accessories before using them to

reprocess the endoscope.

2.1

ETO cap (MB-156)

Connector

Figure 2.1

 Function

When performing ETO gas sterilization, the ETO cap must be attached to the venting connector

on the endoscope connector.

CAUTION

If the ETO cap is not attached to the endoscope during ethylene oxide gas

sterilization, the air inside the endoscope will expand and could rupture the bending

section cover and/or damage the angulation mechanism.

 Inspection

Confirm that the ETO cap is free from scratches, flaws, and debris.

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2.2 Channel plug (MH-944)

2.2

Channel plug (MH-944)

Ch.2

Biopsy valve cap

Plug frame

Suction plug

Air/water plug

Figure 2.2

 Function

The channel plug is used to plug the openings of the

instrument channel port and the suction and air/water

cylinders of the endoscope whenever the injection

tube (MH-946) is used to flush the suction and

air/water channels of the endoscope with

reprocessing fluids.

Plug frame

Biopsy valve cap

Instrument

channel port

Figure 2.3

NOTE

When attached to the endoscope, the channel plug is designed to allow a small

amount of fluid to exit from the openings of the endoscope. This enables

reprocessing fluids to contact the endoscope openings.

 Inspection

Confirm that the suction plug, air/water plug, and the biopsy valve cap of the channel

plug are free from cracks, scratches, and debris.

NOTE

The channel plug does not need to be reprocessed prior to its first use.

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2.3 Injection tube (MH-946)

2.3

Injection tube (MH-946)

Ch.2

Information

card

Suction

channel tube

Connector plug

Suction

channel port

Air pipe port

Air/water

channel port

Air/water channel tube

Filter tube

Suction port

Filter mesh

Figure 2.4

 Function

The injection tube is used to inject reprocessing fluids into the instrument channel, suction

channel, and air/water channels of the endoscope. It is also used to flush air through these

channels to expel fluids.

Suction channel tube

Syringe

Suction port

Air/water channel tube

Air pipe port

Basin

Connector plug

Reprocessing

fluids

Figure 2.5

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2.3 Injection tube (MH-946)

 Inspection

Ch.2

1

Confirm that all components of the injection tube are free from cracks, scratches,

flaws, and debris.

2

3

Confirm that the filter mesh is in the suction port of the injection tube.

Attach a clean 30 ml syringe to the suction channel port of the injection tube. With the

suction port of the injection tube immersed in the water as described in Section 3.2,

“Water (for reprocessing)”, withdraw the syringe plunger and confirm that the water is

drawn into the syringe. Depress the plunger and confirm that the water is emitted from

the suction channel tube of the injection tube. Confirm that the water is not emitted

from the suction port when removing the suction port from the water.

Suction channel port

Suction channel tube

Syringe

Suction port

Figure 2.6

4

Move the syringe to the air/water channel port of the injection tube. With the suction

port of the injection tube immersed in the water, withdraw the syringe plunger and

confirm that the water is drawn into the syringe. Depress the plunger and confirm that

the water is emitted from the air pipe port of the injection tube. Confirm that the water

is not emitted from the suction port when removing the suction port from the water.

Air/water channel port

Suction channel tube

Syringe

Suction port

Air pipe port

Figure 2.7

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2.4 Channel cleaning brush (BW-20T)

NOTE

The injection tube does not need to be reprocessed prior to its first use.

Ch.2

2.4

Channel cleaning brush (BW-20T)

Metal tip

Shaft

Bristles

Brush head

Figure 2.8

 Function

The channel cleaning brush is used to brush the inside of the instrument channel and suction

channel of the endoscope, and the interior and openings of the suction valve (MH-443), the

air/water valve (MH-438), and the biopsy valve (MB-358).

Suction cylinder

Instrument channel

Suction channel

Figure 2.9

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2.4 Channel cleaning brush (BW-20T)

Depress

Ch.2

Biopsy valve

(MB-358)

Suction valve

(MH-443)

Air/water valve

(MH-438)

Figure 2.10

 Inspection

1

Confirm that the brush head and the metal tip of the distal end are securely attached.

Check the brush head for loose or missing bristles.

2

Check the bristles for damage. If the bristles are crushed, gently straighten them with

your gloved fingertips.

3

4

Check for bends, scratches, and other damage to the shaft.

Visually check for debris on the shaft and/or the bristles of the brush head. If there is

debris on the brush, immerse the brush in the water as described in Section 3.2,

“Water (for reprocessing)” and clean the brush until no debris is observed on the

brush.

NOTE

The channel cleaning brush does not need to be reprocessed prior to its first use.

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2.5 Channel-opening cleaning brush (MH-507)

2.5

Channel-opening cleaning brush (MH-507)

Ch.2

Bristles

Shaft

Brush handle

Brush head

Figure 2.11

 Function

The channel-opening cleaning brush is used to brush

the suction cylinder and the instrument channel port

of the endoscope.

Suction cylinder

Instrument

channel port

Figure 2.12

 Inspection

1

2

Check the brush head for loose or missing bristles.

3

4

Check for bends, scratches, and other damage to the shaft.

Check the bristles for any damage. If the bristles are crushed, gently straighten them

with your gloved fingertips.

Visually check for debris on the shaft and/or the bristles of the brush head. If there is

debris on the brush, immerse the brush in the water as described in Section 3.2,

“Water (for reprocessing)” and clean the brush until no debris is observed on the

brush.

NOTE

The channel-opening cleaning brush does not need to be reprocessed prior to its

first use.

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2.6 Auxiliary water tube (MAJ-855)

2.6

Auxiliary water tube (MAJ-855)

Ch.2

Clip

One-way valve

Luer port

Figure 2.13

WARNING

The auxiliary water tube needs to be reprocessed prior to its use in any patient

procedure.

 Function when reprocessing the endoscope

The auxiliary water tube is used to inject reprocessing fluids into the auxiliary water channel of

the endoscope, and to flush air through this channel to expel fluids.

Auxiliary water channel

Auxiliary water tube

Figure 2.14

 Inspection

Check for debris, cracks, scratches, and other damage.

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2.7 Suction cleaning adapter (MH-856)

2.7

Suction cleaning adapter (MH-856)

Ch.2

Connecting end

Weighted end

Figure 2.15

 Function

The suction cleaning adapter is used to aspirate detergent solution through the instrument

channel port of the endoscope.

Suction cylinder

Connecting end

Suction cleaning adapter

Instrument channel port

Suction pump

Weighted end

Figure 2.16

 Inspection

Check for debris, cracks, scratches, and other damage.

NOTE

The suction cleaning adapter does not need to be reprocessed prior to its first use.

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2.8 AW channel cleaning adapter (MH-948)

2.8

AW channel cleaning adapter (MH-948)

Ch.2

Button

Seals

Information card

One-way valve

Figure 2.17

 Function

During precleaning of the endoscope, the AW channel cleaning adapter is attached to the

air/water cylinder of the endoscope. When the button of the adapter is depressed, the water in

the water container is fed through the air/water nozzle of the endoscope to clean the nozzle and

air channel of the endoscope. Air is continuously fed through the air/water channels when the

button is not depressed.

AW channel

cleaning adapter

Air/water nozzle

Water

container

Air channel

Air/water cylinder

Figure 2.18

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2.9 Single use combination cleaning brush (BW-412T)

 Inspection

Check for debris, cracks, scratches, and other damage.

Ch.2

NOTE

The AW channel cleaning adapter does not need to be reprocessed prior to its first

use.

2.9

Single use combination cleaning brush

(BW-412T)

Tip

Bristles

Channel cleaning

brush part

Shaft

Handle

Bristles

Channel-opening

cleaning brush part

Figure 2.19

GIF/CF/PCF-190 Series REPROCESSING MANUAL

19

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2.9 Single use combination cleaning brush (BW-412T)

 Function

The channel cleaning brush part of the single use combination cleaning brush is used to brush

the inside of the instrument channel and suction channel of the endoscope, and the interior

and/or openings of the suction valve (MH-443), the air/water valve (MH-438), and the biopsy

valve (MB-358). The channel-opening cleaning brush part of the single use combination

cleaning brush is used to brush the suction cylinder and the instrument channel port of the

endoscope.

Ch.2

Suction cylinder

Instrument channel

Suction channel

Figure 2.20

Depress

Biopsy valve

(MB-358)

Suction valve

(MH-443)

Air/water valve

(MH-438)

Figure 2.21

20

GIF/CF/PCF-190 Series REPROCESSING MANUAL