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US 2022/0054692 A1Published application
Sterilization Chemical Indicator
Assignee3M Innovative Properties Company
InventorsG. Marco Bommarito, Scott D. Anderson, Ryan W. Clarke, Paul N. Holt, William E. Foltz, Timothy J. Nies, Kevin D. Landgrebe
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Abstract
The present disclosure relates generally to chemical indicators. In particular, the chemical indicators are useful for monitoring sterilization processes. The chemical indicator includes a fluid pathway and a chamber comprises a chemical-indicating composition.
Claims15
A chemical indicator comprising:
- a first sheet substantially impermeable to a sterilant;
- a second sheet substantially impermeable to a sterilant positioned in an overlapping relationship with respect to the first sheet;
- a third sheet positioned between the first sheet and the second sheet;
- a fluid pathway;
- and
- a chamber;
- wherein the fluid pathway comprises a bottom portion, a top portion, and two side portions;
- wherein the chamber comprises a chemical-indicating composition;
- wherein the bottom portion of the fluid pathway is defined by the first sheet, the top portion of the fluid pathway is defined by the second sheet, and the sides of the fluid pathway are defined by the third sheet, the fluid pathway having a first end that defines a first opening and a second end that defines a second opening;
- wherein a first end of the fluid pathway is configured to be in fluid communication with ambience and the second end of the fluid pathway is configured to be in fluid communication with the chamber.
7 more elements
A flat-format sterilization process challenge device comprising:
- a container comprising a chemical indicator, wherein the chemical indicator comprises:
- a chamber comprising a chemical-indicating composition;
- a first sheet;
- a second sheet positioned in an overlapping relationship with respect to the first sheet;
- a third sheet positioned between the first sheet and the second sheet, the third sheet including a cutaway region to define a first fluid pathway,
- a second fluid pathway between ambiance and the chemical indicator,
- wherein the first fluid pathway is defined by the first sheet, the second sheet and the third sheet, the fluid pathway including a first opening and a second opening;
- wherein the first opening provides fluid communication with the interior of the container;
- wherein the second opening of the first fluid pathway is in fluid communication with the chamber, such that the chamber is in fluid communication with the interior of the container only via the first opening of the fluid pathway.
6 more elements
Dependencies are inferred from the claim text.