Material Analysis
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PSU Steam Sterilization Cycle Management
Problembeschreibung
[Problem Phenomenon] PSU medical devices show decreased transparency and strength after multiple steam sterilizations
Ursachenanalyse
PSU can withstand steam sterilization but its cycle capability is lower than PESU/PPSU; repeated sterilization at 121-134°C accumulates thermo-oxidative aging; material selection must match the number of sterilization cycles
Lösung
For high sterilization cycle situations, switch to PESU (1000+ cycles) or PPSU; manage PSU parts by sterilization cycle life; sterilization parameters follow the 121°C procedure without exceeding temperature
Wichtigste Erkenntnis
PSU sterilization resistance has a cycle upper limit; switching to PESU is safer for high-cycle situations; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence
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