Visual detector for vaporized hydrogen peroxide
US7186373B2 · kind B2 · utility
17Cited by
42References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2003 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Sep 30, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2202/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for sensing the concentration of a gaseous sterilant in a sealable enclosure. An indicator is provided that has a chemistry such that the indicator changes color when exposed to vaporized hydrogen peroxide (VHP). The chemistry is adapted to react when exposed to a specific minimum concentration of vaporized hydrogen peroxide for a specific minimum period of time. In this manner, it can be visually determined whether articles (e.g., medical instruments and like devices) located within the sealable enclosure have been exposed to a minimum threshold of vaporized hydrogen peroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.