Method for pressurizing a steam sterilization chamber
US11007289B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2019 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Sep 8, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2202/24
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for pressurizing a sterilization chamber of a steam sterilizer with a controlled rate of pressure change. Pressure is increased in the sterilization chamber by opening a steam-to-chamber valve for a pulse duration during each of a plurality of time PERIODS needed to reach a target pressure value. During each time PERIOD, the steam-to-chamber valve is moved to an open state for the duration of the pulse. An error value indicative of the difference between a Theoretical Pressure and a Measured Pressure is determined at the end of each PERIOD. This error value is used to determine the duration of the pulse for the subsequent PERIOD, thereby maintaining a desired rate of pressure change in the sterilization chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.