ASP STERRAD 100, Руководство по обслуживанию

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STERRAD 100 S Theory of Operation
Introduction
The STERRAD® 100 S Sterilizer is a hydrogen peroxide gas plasma
sterilizer that provides an environment sufficiently lethal to
microorganisms to produce at least a 10-6 Sterility Assurance Level
(SAL) for devices within label claims,. The STERRAD 100 S Sterilizer has
two separate peroxide injections/plasma stages, rather than one, in the
sterilization cycle.
The STERRAD 100 S Sterilizer process has four distinct phases
F
Phase 1 Vacuum. This is a preconditioning stage with air plasma.
F
Phase 2. Sterilization A. Injection, diffusion , plasma stages.
F
Phase 3. Sterilization B. Injection, diffusion, plasma stages.
F
Phase 4. Venting. A final venting to return chamber to atmospheric
pressure.
This multiphased cycle reliably process sterile medical devices without
toxic residues. The devices are then safe for immediate use or suitable
for storage and later use. The equipment has built-in safeguards to
ensure completion of each cycle run through all it phases.
Phase 1 - Vacuum Preconditioning
Step One
The vacuum stage is the first stage of the sterilization process. The
chamber pressure is pumped down to 700 mTorr then plasma is lit.
Step Two
The plasma stays lit at a controlled pressure of 500 mTorr for the 10
minutes for the short cycle or 15 minutes for the long cycle. This
conditions the load for later sterilization. This air plasma is to assist in
removing any residual moisture on or in the load by accelerating the
vaporization of the water and allowing it to be removed from the chamber
by the vacuum pump. The vent valve is opened following the plasma
condition. Finally the chamber pressure is pumped down to 400 mTorr
before transitioning to the injection stage.
System Operation STERRAD 100 S Theory of Operation
2-18 STERRAD® 100 Sterilizer ASP Service Guide rev. D