17results about "Investigating sterilization degree" patented technology

A sterilization challenge device for verifying the efficacy of a gas sterilization process includes an outer container, an inner container, and a cap. The outer container includes an open end, a closed end, a chamber configured to contain the inner container for containing a chemical indicator, and at least one hole arranged proximate the open end. The cap is configured to engage with the outer container to close the open end, and the at least one hole is configured to provide a flow path for the gaseous sterilant into the chamber.

To provide UV-responsive laminates including a first layer having a photochromatic pigment arranged as a pigment texture, or one or more photochromatic indicators, or combinations thereof.SOLUTION: The photochromatic pigment may be disposed on the laminates during laminate fabrication, prior to laminate installation, or subsequently to the installation in situ. The photochromatic pigment is configured to change from a first state to a second state in response to exposure to an ultraviolet (UV) light source, the first state is invisible to the naked eye under ambient lighting and the second state is visible to the naked eye under ambient lighting. The UV-responsive laminates may further include additional layers, such as a second layer which may be a coupling layer configured to removably couple the laminate to a component. Additional layers, such as a protective layer or a backing layer, may also be included in the UV-responsive laminate.SELECTED DRAWING: Figure 1D

A method of marking a residual aqueous contaminant on a surface to be decontaminated comprises first mixing a first part of a marking system with a second part of the marking system, wherein the first part of the marking system comprises a pH-sensitive dyestuff and has a first pH, and exhibits a first colour, and the second part of the marking system comprises a pH modifier. Upon mixing the first and second parts of the marking system, a marker composition is obtained that has a second pH and exhibits a second colour, different to the first colour. The method further comprises applying the marker composition to the surface, such that the marker composition changes colour from the second colour to a third colour, different to the second colour, when in contact with a residual aqueous contaminant on the surface having a pH that differs from the second pH, thereby marking the position of the contaminant with the third colour.

An example sterilization indicator (102) includes a cover (122), an indicator (102), and a seal (142). The cover (122) defines at least a portion of a cavity (138). The indicator (102) is disposed within the cavity (138). The indicator (102) is configured to fluidly couple with an internal cavity (110) of a sterilization package (package) and indicate an exposure to a sterilant. The seal (142) is configured to form a microorganism barrier between an exterior of the cover (122) and an internal cavity (110) of a sterilization package (100).

Marker composition comprising water, 1-10 wt.% non-ionic surfactant selected from alkyl polyglucosides, alcohol ethoxylates and alcohol ethoxylate propoxylates, or mixtures thereof, 1-5% organic solve

The present disclosure provides embodiments of a sterilization indicator reading apparatus. The sterilization indicator reading apparatus includes a plurality of wells disposed in a housing configured to receive a plurality of biological indicators. Each well includes a heater sleeve that is thermally coupled within and configured to rapidly heat a biological indicator and provide rapid results of the effectiveness of a sterilization process. The heater sleeve is communicatively coupled with a printed circuit board that controls the heating profile of a biological indicator depending on the desired heating time and desired temperature to provide rapid results of the effectiveness of a sterilization process.

A method for signifying a selected cumulative scrubbing action between a device and a surface, the cumulative scrubbing action being signified by a signaling element, wherein the signaling element is configured to provide an observable signal when the selected cumulative scrubbing action has been provided to the surface. The method may comprise applying scrubbing action to the signaling element to release and / or expose at least a first portion of an indicator, and observing the device and / or surface for the signal. The present disclosure also relates to signaling elements and devices for use according to the methods of the present disclosure, and to methods of preparing the same.

A medical instrument processor includes an enclosure, a liquid distribution system, and a disinfectant concentration measuring subsystem. The enclosure is configured to hold a medical instrument. The liquid distribution system is configured to deliver a disinfection solution to a medical instrument within the enclosure. The liquid distribution system has a liquid outlet. The disinfectant concentration measuring subsystem includes a first mixing chamber in fluid communication with the liquid outlet, a pump that is configured to simultaneously pump the disinfection solution and the reagent solution into the first mixing chamber, and a concentration analysis assembly that is operable to determine a concentration of disinfectant in a sample solution that is output from the first mixing chamber. The reservoir is in fluid communication with the first mixing chamber.

A sensor device. The sensor device includes a sterilant-responsive switch comprising: a circuit; a conductive polymer having a first state and a second state, and a polymeric binder; and wherein the sterilant-responsive switch connects the circuit in the first state and disconnects the circuit in the second state, and wherein the conductive polymer is capable of being converted from being in the first state to being in the second state when in contact with a sterilant.

A method of sterilisation, certification and traceability of liquid nitrogen, includes the steps of preparing a container, provided with an opening, in use, at the top, and pouring into it a batch of liquid nitrogen to be sterilised; providing an identification element uniquely associable with the batch of liquid nitrogen, said identification element including an indicator of the sterilisation state of the batch contained in said container configured to modify its appearance following exposure to ultraviolet radiation; associating the identification element with the container of the batch of liquid nitrogen to be sterilised, positioning it in a portion of said container, adjacent to said opening; carry out a batch sterilisation treatment through exposure to ultraviolet radiation for a predetermined period of time, to modify at least one characteristic of the indicator to certify the sterilisation of the batch.

An example sterilization indicator (102) includes a cover (122), an indicator (102), and a seal (142). The cover (122) defines at least a portion of a cavity (138). The indicator (102) is disposed within the cavity (138). The indicator (102) is configured to fluidly couple with an interior cavity (110) of a sterilization package (package) and indicate exposure to a sterilant. The seal (142) is configured to form a microbial barrier between an exterior of the cover (122) and the interior cavity (110) of the sterilization package (100).

The present disclosure provides embodiments of a sterilization indicator reading apparatus. The sterilization indicator reading apparatus includes a plurality of wells disposed in a housing configured to receive a plurality of biological indicators. Each well includes a first region spaced apart from a second region. A heater is thermally coupled with each well. The housing further includes a printed circuit board including a plurality of fluorescent excitation sources, plurality of white light sources, and plurality of color sensors. A first fluorescent excitation source, first white light source, and a first color sensor are disposed in the first region. A second white light source and a second color sensor are disposed in the second region. The printed circuit board further includes a processor and a memory. The processor is communicatively coupled with the heaters, the plurality of fluorescent excitation sources, plurality of white light sources, and plurality of color sensors.

This invention relates to a chemical indicator, comprising: a non-cellulosic backing layer; a non-cellulosic cover layer overlying the backing layer; the backing layer and / or the cover layer comprising a gas permeable polymeric film; a non-cellulosic wicking material positioned between the backing layer and the cover layer; a dye composition positioned between the backing layer and the cover layer and in contact with or nearly in contact with the wicking strip, the dye composition comprising an indicator dye which changes color in the presence of hydrogen peroxide, and a base medium, which melts at a temperature in the range from about 45°C to about 65°C; the cover layer including a transparent portion to permit observation of the wicking material; and an adhesive for adhering the cover layer to the backing layer. The chemical indicator may be referred to as a moving front chemical indicator. A process for conducting a vaporous hydrogen peroxide (VHP) sterilization process using the foregoing chemical indicator is disclosed.

A method of marking a residual aqueous contaminant on a surface 20 to be decontaminated comprises mixing a first part 11 of a marking system comprising a pH-sensitive dyestuff with first pH and first

A pathogen surrogate, formed by a DNA tag or bar code and a carrier, is described for use in the validation and verification of sanitation, such as in food processing operations and for wash water systems for fresh produce. The carrier material is selected so that the pathogen surrogate mimics the behavior of a pathogen when subjected to a sanitation operation. One or more surrogates can be introduced in to an environment, which is then subjected to sanitation process, followed by a detection process using the DNA tag of the surrogate.