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US 2003/0190253 A1Published application
Method for determining lumen penetration of a vapor phase sterilant
AssigneeEthicon, Inc.
InventorsJames P. Kohler, Harold R. Williams
Life of this patent
Estimating the term…
Abstract
Concentration of a chemical vapor sterilant, especially, hydrogen peroxide, can be calculated at a point within a lumen based upon physical characteristics of the lumen and process parameters of a sterilization process employing the sterilant.
Claims22
A method for assessing a sterilization of a lumen of a device in a vapor phase hydrogen peroxide sterilization process, the method comprising the steps of:
- a) measuring concentration of hydrogen peroxide vapor exterior of the lumen;
- b) calculating at least once a concentration of hydrogen peroxide at a selected location within the lumen based upon time of exposure, concentration of hydrogen peroxide exterior of the lumen and the physical characteristics of the lumen;
- and
- c) indicating a parameter relevant to said sterilization of said lumen based upon said concentration of said hydrogen peroxide at the selected location.
1 more element
A method for controlling sterilization of a lumen of a device in a vapor phase hydrogen peroxide sterilization process, the method comprising the steps of:
- measuring a concentration of hydrogen peroxide vapor exterior of the lumen;
- calculating at least once a concentration of hydrogen peroxide at a selected location within the lumen based upon process parameters of the sterilization process and physical characteristics of the lumen, wherein the process parameters include the concentration of hydrogen peroxide exterior of the lumen;
- and
- adjusting a parameter of the sterilization process based upon the at least one calculated concentration of hydrogen peroxide at the selected location.
1 more element
Dependencies are inferred from the claim text.