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“Kagami-Naishi”- Automatic Endoscope Washer Go to Basic Knowledge of “DENKAISUI” Electrolyzed Water

  • Various challenges facing health care facilities that use endoscopes
Principle of Transparency with Regard to Its Corporate Activities with Healthcare Facilities, etc.
(1) Infection risk

As an opportunity of treating patients with an endoscope increases, there is an increasing risk of cross-infection caused by an endoscope. Cross-infection is the transmission of infectious microorganisms from one person to another and is mainly caused by sharing a piece of equipment or the working environment.

(2) Contamination of working environment
To sterilize an endoscope, aldehyde based sterilizers or peracetic acid sterilizers are used. To protect the health of workers against the problems caused by such drugs, it is necessary to take various countermeasures such as the installation of a ventilation system or the wearing of a protective mask.
(3) Cost of cleaning and sterilization
If an endoscope is washed by the conventional measure, not only the purchase of disinfectants but also much effort and time are required.
  • “Kagami-Naishi,” an automatic endoscope washier can solve various challenges facing health care facilities

To solve various challenges facing health care facilities, based on an entirely new concept, we have developed “Kagami-Naishi,” an automatic endoscope washer that is equipped with a built-in strongly acidic electrolyzed water generator, a built-in strongly alkaline electrolyzed water generator and an automatic endoscope channel brushing system.

  • Features of “Kagami-Naishi,” an automatic endoscope washer
Feature 1
It is equipped with
an automatic endoscope channel brushing system.
With its superior sterilizing power, it can process not only a slim endoscope for the upper gastrointestinal tract but also a long endoscope for the large intestine.
Unlike the conventional endoscope washer which can perform only cleaning and disinfection, the “Kagami-Naishi” is equipped with an automatic endoscope channel brushing system which has eliminated the need for manual brushing prior to cleaning and disinfection. This automatic brushing system ensures a fail-proof sterilization while reducing time and effort on site.

Based on our original technology, we have developed an automatic brushing system that can automatically brush the biopsy and suction channels of an endoscope until clear and the automatic brushing and wiping of channels in three directions under running water, which is considered an ideal channel brushing, has been realized. The suction/ biopsy channel suctions blood, debris and air from the body and it is a passageway through which an instrument for biopsy passes. Thus, the level of contamination is high around this area and consequently physical washing using a special brush is necessary.
After a biopsy small pieces of mucosal tissues may be left behind near the forceps insertion opening in the channel of an endoscope. Because normal cleaning solvents are not strong enough to suction and remove them, it is necessary to wash this area thoroughly each time an examination is performed. However, it takes too much time and effort to clean endoscopes manually. Furthermore, this may result in the wrong brushing.

Now, “Kagami-Naishi” can perform this channel brushing work automatically by programming. It can assure a thorough cleaning and eliminate a variation of work level. The cleaning brush can be moved back and forth automatically in the channel in three directions to scrape off secretion and blood that are attached to the interior of the channel. There are two types of our dedicated cleaning brushes: one for the upper gastrointestinal tract and one for the large intestine. The former is used for a slim endoscope for the upper gastrointestinal tract (inner diameter of 2.0 to 3.7mm) and the latter for a long endoscope for the large intestine (effective length of 1,030 to 1,680mm).
Automatic brushing system
Feature 2
It has a built-in “DENKAISUI” electrolyzed water generator. It is safe and no countermeasure to control exposure to disinfectants is necessary.

An endoscope can be sterilized by using the strongly acidic “DENKAISUI” electrolyzed water without contaminating the working environment. When the conventional sterilization method using disinfectants is applied, there are cases where health care workers such as nurses and other health professionals are affected by evaporated hazardous gas from the disinfectant in use. “Kagami-Naishi” can prevent such contamination of a working environment and eliminate the risk of exposure to hazardous chemicals. Now washing of endoscope channels can be performed safely.

Feature 3
A considerable reduction in washing time is realized. It takes only 5 minutes to clean and sterilize an endoscope (for the upper gastrointestinal tract).

According to a guideline for manual cleaning of an endoscope, it takes about 5 minutes to wash, 10 – 15 minutes to sterilize and if the time to spend in rinsing thoroughly to make sure that there are no chemical residues in the channels of an endoscope is included, a full process of washing takes more than 30 minutes.

“Kagami-Naishi” can significantly save the time wasted on washing endoscopes manually. With the use of “Kagami-Naishi,” the time for cleaning and sterilization is about 5 minutes for the upper gastrointestinal tract and about 8 minutes for the large intestine. Thorough cleaning and sterilization of an endoscope can be performed quickly at brief moments between examinations.

Feature 4
It eliminates the need for expensive enzyme-based cleaning agents.

Only a small amount of salt and water are the basic ingredients to make strongly acidic “DENKAISUI” electrolyzed water and strongly alkaline “DENKAISUI” electrolyzed water which are used for cleaning and sterilization. Compared to the conventional cleaning method using expensive chemical agents, a very economical cleaning and sterilization of an endoscope is now made possible.

Feature 5
It overcomes the weakness of strongly acidic “DENKAISUI” electrolyzed water.

It has been said that the strongly acidic “DENKAISUI” electrolyzed water cannot achieve a full sterilization effect where there exist a large amount of organic substances such as blood and excrement. However, “Kagami-Naishi” has solved this problem by installing an automatic endoscope channel brushing system and utilizing strongly alkaline “DENKAISUI” electrolyzed water. It can effectively eliminate many bacteria and viruses such as Helicobacter pylori bacteria in the gastric fluids, Hepatitis viruses in the blood and anaerobic spore-forming bacillus in the large intestine.

  • Specifications
Model name “Kagami-Naishi” KOM-ED-O2
“Kagami-Naishi” KOM-ED-O2
“Kagami-Naishi” KOM-ED-F2
“Kagami-Naishi” KOM-ED-F2
Applicable manufacturer Olympus Medical Systems Corporation FUJIFILM Corporation
Dimension 1,038(H) ×640(W) ×860(D) (mm)
Weight 130kg
Rated voltage AC100V
Power 1500VA
Applicable endoscope Limited to Flexible endoscopes for medical uses (also limited to an endoscope for the upper gastrointestinal tract and for the large intestine). Must be coated with urethane resin.
Number of endoscope washable simultaneously One
Cleaning and sterilization time 5 minutes to wash an endoscope for the upper gastrointestinal tract (about 6 minutes if a visual confirmation is included)
8 minutes to wash an endoscope for the large intestine (about 9 minutes if a visual confirmation is included)
Amount of “DENKAISUI” electrolyzed water generated
Strongly acidic “DENKAISUI”: 600±100ml/min.
Strongly alkaline “DENKAISUI”: 600±100ml/min.
Characteristics of “DENKAISUI”
Strongly acidic “DENKAISUI”: pH2.2 – 2.7, residual chloride concentration: 20 – 60ppm, ORP: more than 1,100mV, Strongly alkaline “DENKAISUI”: pH10.0 – 11.8
Method of electrolysis Continuous electrolysis
Method to wash electrolyzer Automatic washing (washing an electrode every hour)
Electrolytic additives 20% NaCl solution (250g of additive is dissolved in raw water)
Method of installment Floor standing on casters for easy relocation
Water supply Main stop system/connection to branch faucet (direct water supply)
Drainage system Forced drain by built-in pump (floor drain)
Certification number of medical devices 22200BZX00738000
Classification Controlled medical devices/designated controlled medical devices
Generic name Flexible endoscope cleaning and disinfecting device (35628000)
EMC standard EMC approval, JIS C 1806-1:2010 approval
Ambient temperature 5 – 35℃
Relative humidity Less than 85% (no condensation)
Amount of water supply More than 17L/min.
Water pressure 0.1 – 0.75MPa
Drainage system Floor drain (PVC pipe, size>50A), drainage capacity: more than 20L/min.
Water as raw material Tap water or purified water
If tap water is used as raw material, a water softener must be installed.
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