Cleaning, Disinfection, Sterilization Procedure (i900, i900 classic)

1. Reusable Tip

The reusable tip is the part that is positioned in the mouth of patients during scanning, and is reusable for a limited number of times. The tip needs to be cleaned and sterilized between patient uses to avoid cross-contamination.

 

1.1. Cleaning

• Prepare a cleaning solution.
  » Dilute a general neutral detergent at a 1:100 ratio before use.
  
• Clean the reusable tips with a cleaning solution and a brush.
  » Ensure the mirror of the tip is completely clean and stain-free. If the mirror appears stained or foggy, repeat the cleaning process.

• Rinse the reusable tips three times with purified water.
• Remove moisture with a paper towel and allow them to air-dry completely at room temperature for at least 80 minutes.

 

1.2. Disinfection

Disinfect the reusable tips using a disinfectant containing 15% or less Isopropyl Alcohol (IPA) for 1 minute. Then, ensure they are thoroughly dried at room temperature for at least 5 minutes.

» Before using a disinfectant product, please refer to the product user manual for proper use.

 

1.3. Sterilization

Autoclave Sterilization

• Make sure to always wrap the tip with 100% cotton gauze before autoclaving.
  If you autoclave an exposed tip, it will cause stains on the mirror, which cannot be removed. Check the autoclave manual for more information.

Tip Sealing Method Sealing the mirror area with 100% cotton gauze effectively protects against contamination even in demanding sterilization environments.	1. Stack three 2"x2", 8-ply gauze pads.	2. Fold the stacked gauze twice to form a three-layer structure.
3. Fold about one-third of the gauze lengthwise.	4. Insert the thick folded part into the mirror area, ensuring the mirror is completely sealed with no gaps.	5. Done.

• Insert the tip into a paper sterilization pouch and seal it, making sure that it is airtight. Use either a self-adhesive or heat-sealed pouch.
• Sterilize the wrapped tip in an autoclave with the following conditions:
  

» Sterilize in a gravity autoclave at 135°C (275°F) for 10 minutes and dry for 30 minutes.
» Sterilize in a pre-vacuum autoclave at 134°C (273.2°F) for 4 minutes and dry for 20 minutes.

• Use an autoclave program that dries the wrapped tip before opening the autoclave.
• Scanner tips can be re-sterilized up to 150 times. After reaching this limit, they must be disposed of according to the guidelines in the disposal section. 
• Autoclave times and temperatures may vary depending on the autoclave type and manufacturer. For this reason, it may not be able to meet the maximum number of times. Please refer to the user manual of the autoclave manufacturer you are using to determine whether the required conditions are met.

 

 1.4. Disposal

 

2. Mirror

The presence of impurities or smudges on the tip mirror may lead to poor scan quality and an overall poor scanning experience. In such situations, clean the mirror following the steps below:
① Disconnect the scanner tip from the handpiece.
② Pour alcohol on a clean cloth or cotton-tipped swab and wipe the mirror. Make sure to use alcohol that is free of impurities or it may stain the mirror. You can use either ethanol or propanol(ethyl-/propyl alcohol).
③ Wipe the mirror dry using a dry, lint-free cloth.
④ Make sure the mirror is free of dust and fibers. Repeat the cleaning process as necessary.

 

3. Handpiece

After treatment, clean and disinfect all other surfaces of the handpiece except for the scanner front (optical window) and end (air vent hole). Cleaning and disinfecting must be done with the device turned off. Use the device only after it is completely dry.
The recommended cleaning and disinfecting solution is denatured alcohol (ethyl alcohol or ethanol) – typically 60 – 70% Alc/Vol.
The general cleaning and disinfecting procedures are as follows:

① Turn off the device using the power button.

② Unplug all the cables from the power hub.

③ Clean the optical window on the front end of the handpiece.
» If alcohol is poured directly into the optical window, it may seep inside the handpiece and cause a malfunction.
» Do not clean the optical window by pouring alcohol or cleaning solution directly into the optical window. The filter must be gently wiped with a cotton or soft cloth moistened with alcohol. Do not wipe by hand or apply excessive force.
» Medit is not responsible for any damage or malfunction that occurs during cleaning that does not follow the guidelines above.

④ Put the cover on the front of the handpiece after cleaning
the optical window.

⑤ Pour the disinfectant onto a soft, lint-free, and non-abrasive cloth.

⑥ Wipe the scanner surface with the cloth.

⑦ Dry the surface with a clean, dry, lint-free, and non-abrasive cloth.

 

4. Other Components

The recommended cleaning and disinfecting solution is denatured alcohol (ethyl alcohol or ethanol) – typically 60 – 70% Alc/Vol.

• Pour the cleaning and disinfecting solution onto a soft, lint-free, and non-abrasive cloth.
• Wipe the component surface with the cloth.
• Dry the surface with a clean, dry, lint-free, and non-abrasive cloth.