Autoclave Pressure Control for Medical Instrument Sterilization

The patent applies preliminary action by controlling the pressure inside the housing container before sterilization to be higher than the external pressure. This pre-established pressure differential prevents the cover sheet from bulging outward during the sterilization process, thereby preventing peeling while maintaining sterilization effectiveness. The pressure control is implemented before the temperature-increasing step begins.

The patent utilizes parameter changes by dynamically adjusting the pressure parameter inside the housing container during the sterilization process. The pressure is controlled to maintain a higher internal pressure relative to external pressure throughout the temperature-increasing, sterilizing, and cooling steps. This parameter control prevents the pressure differential that would cause cover sheet bulging and subsequent peeling.

The patent applies preliminary action by establishing the pressure differential before thermal bonding degradation occurs during sterilization. By maintaining higher internal pressure from the start, the cover sheet is prevented from bulging outward, which would otherwise cause the thermal bond at the opening edge to fail. This preemptive pressure control preserves both sealing integrity and shape stability.

The patent applies the counterweight principle by using internal pressure as a counteracting force against the external pressure and thermal expansion forces that cause the cover sheet to bulge outward. The higher internal pressure creates a balancing effect that prevents the cover sheet from deforming and peeling from the thermally bonded opening edge during temperature changes.

The patent applies self-service by designing the housing container with an integrated pressure control capability that automatically maintains the required pressure differential. The system uses the sterilization process itself (steam introduction) to generate and maintain the pressure, rather than requiring a separate complex pressure control system. The container structure and sealing mechanisms work together to self-regulate the pressure environment.

The patent merges the pressure control function with the existing sterilization system. Instead of adding a separate complex pressure control device, the solution integrates pressure maintenance into the steam sterilization process itself. The steam introduction and container sealing work together to simultaneously achieve both sterilization and pressure control, reducing overall system complexity.