2. Guide for Visitors
  3. Sterile Supply

Sterile Supply

Safe and Secure Medical Equipment Supply Service

Washer-disinfector(Automatic washer-disinfector with automatic conveyor)
(Automatic washer-disinfector with automatic conveyor)

Osaka University Hospital’s Central Sterile Supply Department was established on February 20, 1971 in order to provide efficient and reliable sterilization, centralizing the cleaning and sterilization of medical equipment, which had previously been done independently in each section and department, and the provision of sanitary materials. Then in September 1993 its name was changed from Central Sterile Supply Department to Sterile Supply at the time of relocation of the hospital to the Suita district. Cleaning and disinfection of flexible endoscopes, which had been done at the Endoscopy Center, was centralized in April 2008, and then initial washing by each department was abolished in April 2009. Sterile Supply provides quality assurance for reusable medical equipment in a centralized process, striving for safe and reliable medical equipment supply service.


Sterile Supply’s staff consists of the director (professor), a deputy director (first-class sterilization technician, 1 supervisor (clinical engineer), 1 special technical staff (first class sterilization technician), 1 part-time medical technical staff (clinical laboratory technician), 1 part-time nursing technical aid.
Washing and sterilization of medical equipment is done by 50 outsourced employees.
The overall logistics of disposable (single use) medical equipment from ordering to inventory is handled by outsourced employees (SPD: Supply Processing and Distribution).


Various contaminants (blood, body fluids, minute tissues, etc.) and micro-organisms adhere to equipment used in medical wards, outpatient clinics and surgery. To remove these from the equipment, the chemical action of detergent is combined with physical effects of ultrasound, brushing and water jet for highly efficient washing.
Depending on the material of the equipment, mainly three kinds of sterilization are used: high-pressure steam sterilization (autoclave), ethylene oxide gas sterilization, and hydrogen peroxide low temperature gas plasma sterilization.

High pressure steam sterilizer (within pre-sterilized chamber)
High pressure steam sterilizer
(within pre-sterilized chamber)

  • High-pressure steam sterilization (autoclave)
    This is a method of killing micro-organisms by denaturing their proteins using the thermal energy of saturated steam. It can sterilize equipment that can withstand high temperature and high pressure, such as steel articles and linen, and is widely used because it is also safe and low cost.
  • Low temperature ethylene oxide gas sterilization
    This is a method of killing micro-organisms using ethylene oxide gas. It is used to sterilize medical equipment that cannot withstand high temperature and high pressure, such as vinyl chloride products and flexible endoscopes.
  • Hydrogen peroxide low temperature gas plasma sterilization
    Free radicals generated by applying high frequency energy to hydrogen peroxide steam kill micro-organisms. It is used to sterilize medical equipment that cannot withstand high temperature and high pressure. Although sterilization time is short, the cost is relatively high compared to the others. In addition, it cannot be used to sterilize paper, gauze, linen (textiles), etc.

The staff endeavors to select the washing and sterilization method appropriate to the form and material of the medical equipment, and provide safe and secure medical equipment every day.

[Washing and disinfection of flexible endoscopes]
Washing and disinfection of gastrointestinal and bronchial endoscopes
In addition to the 8,000 gastrointestinal and bronchial endoscopes used in diagnosis, treatment and tests each year at the Endoscopy Center, this center has also begun cleaning and disinfecting flexible endoscopes used for outpatients of Otorhinolaryngology-Head and Neck Surgery and of Gynecology.

Overview of Facilities

Washer-disinfector (with shower) 5
Vacuum Boiling Washer 1
Ultrasonic Washer 4
Suctioning Washer 4
Tube Washer 2
Thermostatic immersion bath 9
Flexible endoscope washer-disinfector 9
High pressure steam sterilizer (1200 L) 5
High pressure steam sterilizer (630 L) 1
High pressure steam sterilizer (15 L) 1
Ethylene oxide gas sterilizer (1200 L) 1
Hydrogen peroxide low temperature gas plasma sterilizer (Sterrad 200, 100s, NX) 1 each

Disposables room

In pursuit of economic efficiency and rational management, the purchase, supply and inventory of medical supplies have been centralized under the management of SPD. Waste is also being reduced by thorough management of expiration dates and unmoving stocks of medical supplies.


Guide for Visitors
Outpatient consultation days
Monday to Friday
Non-consultation days
Saturdays, Sundays, Holidays
New Year’s Holidays:
Dec. 29 to Jan. 3
Consultation times
First visit: 8:30 am to 11:00 am

First-time visitors to Osaka University Hospital must have a referral from a physician.

Revisit: 8:30 am to 11:30 am
Revisit with appointment: 8:30 am to 3:00 pm

Page Top

We cannot answer questions about diseases or treatments by telephone or mail. Please ask in consultation at the hospital.