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Home » Care222®: Anti-Microbial Far-UVC Disinfection

Care222®: Anti-Microbial Far-UVC Disinfection

March 2nd 2020

Ushio Care222®
Far UV-C Disinfection Modules

An Introduction to Ushio’s Care222® far UV-C lamps

Ushio is proud to introduce the Care222® series, a new line of 222 nm far-UVC excimer lamps for microbial reduction. The Care222® line uses ultraviolet germicidal irradiation (UVGI) to kill bacteria and inactivate a vast range of viruses. UVGI is commonly known as UV disinfection. The system has already been deployed in many unoccupied spaces. With recently completed and ongoing studies taking place, new safe ways are emerging to make Care222® products your best opportunity to secure microbial reduction in occupied spaces too.

Ushio’s longstanding collaborations with respected scientific institutions, such as Kobe University of Japan, Columbia University in the U.S., and the University Hospital of Singapore, have contributed to the development of Care222® technology. The 222 nm irradiation kills bacteria and inactivates viruses without damaging human cells/tissues using narrow-band spectrum UV. Ushio has been granted exclusive use of Columbia’s patented band-pass wavelength filtration technology. The system has demonstrated its ability to inactivate all kinds of ‘super bugs’ such as MRSA, influenza, MERS-CoV, as well as viruses like Ebola. Ushio has pressed on with development and has now confirmed two types of Care222® product will be made available. 

Which model is for you? Care222® B1 or Care222® U3

For original equipment manufacturers (OEMs), Ushio is able to supply the Care222® B1 lamp and power supply component to be integrated into your own devices. This is of particular interest to manufacturers of medical lighting equipment, sanitary equipment such as hand dryers, cleanliness-sensitive production lines, and more.

The Care222® U3 device includes a full housing, power supply, and power source connection. Designed to be mounted on a ceiling, hung from a pole or stand, the Care222® U3 unit has three activation settings. These are continuous output, simple on/off switch duty control, or activation through the built-in human sensor.

Ushio Care222® Model B1 - UV Germicidal Irradiation (UVGI)
Care222® B1

Care222® Model B1 Specifications

Ushio Care222® Model U3 - UV Germicidal Irradiation (UVGI)
Care222® U3

Care222® Model U3 Specifications

What is Ultraviolet Germicidal Radiation (UVGI)?

Non-ionising ultraviolet (UV) radiation between 160 nm and 310 nm has a unique germicidal ability to provide a means of disinfection. UVGI achieves this by disrupting the DNA functions of microorganisms and pathogens such as bacteria, viruses, and protozoa. Non-ionising radiation has a mutagenic effect on organisms by exciting the molecules at the core of their DNA and RNA. The catastrophic destruction of the cell wall renders them unable to reproduce or infect and, in some cases, kills them.

Able to neutralise living cells in a matter of seconds, UVGI is an ideal alternative to chemical disinfection. The use of chemicals is detrimental to the environment, and in most cases, can lose effectiveness over time due to the ability of microorganisms to develop a resistance to them. There is no living cell with a total resistance to ultraviolet light, it occurs naturally within the environment, and does not affect the taste or smell of the UVGI treated substance.

Ideal applications for the Care222® series

The fundamental difference between disinfection and sterilisation

Disinfection and Sterilisation are both methods which seek to achieve decontamination through the removal of pathogens. While many people regard these terms to be interchangeable, they actually have slightly different meanings pertaining to the level of cleanliness achieved.

The definition of disinfection

Disinfection is a process in which the number of pathogenic microorganisms, such as viruses and bacteria, is reduced through inactivation. Disinfection is ineffective against bacterial endospores despite being able to remove pathogens, which is what separates this type of cleaning from sterilisation.

Various methods of disinfection are commonly used throughout daily life, mostly for the acceptable decontamination of surfaces and air. In a hospital scenario, low-level disinfection is implemented on noncritical surfaces and equipment which come into contact with intact skin, such as bed frames or the inflatable cuff of a blood pressure monitor. High-level disinfection must be implemented on semi-critical equipment which comes into direct contact with mucous membranes or non-intact skin; this includes devices such as endoscopes and respiratory therapy equipment.

The definition of sterilisation

Sterilisation is a process in which all pathogenic microorganisms, including vegetative endospores, are completely destroyed. Sterilisation kills, eradicates, and / or inactivates biological lifeforms such as bacteria, fungi, viruses, endospores, and prions.

Within healthcare practices, equipment sterilisation is a mandatory process which must take place before every use. Critical medical and surgical devices enter parts of the body tissue which are usually sterile or pertain to the flow of sterile bodily fluids such as blood and urine.

Excimer technology: The Care222® series has an industrious brother, ExciJet

Ushio’s excimer irradiation solutions, such as the ExciJet series and Care222®, emit customisable excimer wavelengths between 170 nm and 350 nm. Different wavelengths can be selected chosen for the specific results achieved at each individual wavelength. By filling the glass chamber with different noble gases, the resulting wavelength will also differ. For example, an excimer lamp filled with xenon (Xe) gas will emit 172 nm radiation when the excited dimers dissociate. A krypton-chloride (KrCl) lamp will emit photons at a wavelength of 222 nm at the point of excimer dissociation.

Originally, this technology grabbed the attention of industrial manufacturers who would not be exposing humans to the emitted light. Firstly, our 172 nm lamps began generating significant interest from aerospace and automotive firms who wished to use the technology in air purification systems. Dielectric barrier discharge excimer lamps also hold a unique ability to bond materials, such as polymers and glass, without epoxy or other chemicals. By pressing two non-identical substrates together during treatment, a permanent bond is formed at a low pressure & temperature, which can lead to further industrial benefits.

222 nm far UV-C does not penetrate the top layer of skin

In general, ultraviolet light has the deserved reputation of being dangerous for humans. At 254 nm, UV light has enough intensity that it is able to penetrate the epidermal layer of skin and cause molecular changes in the layers beneath.

Care222® devices emit VUV radiation at a wavelength of 222 nm which possesses a rather shallow penetration depth, which means the radiation cannot pass through the stratum corneum epidermal layer of skin and is, therefore, unable to cause molecular mutation in the deeper stratum spinosum epidermal layer – unlike conventional 254 nm UV lamps.

At the 222 nm range of intensity, the UV radiation is unable to penetrate the top layer of skin and simply inactivates any bacteria or viruses that may be present on the surface. 

Ushio Care222®PlanUndLicht Concept

Care222® Product Enquiry Questionnaire

By filling in this questionnaire, you will help Ushio to respond to your queries as fast as possible. It will save time, because these are common questions that we will need to ask you anyway, in order to provide the best service and solutions.

Once the form is submitted, your answers will make their way directly to our 222 nm excimer experts. Responsibility for contacting you will then be assigned to the member of our team with the right knowledge and background to bring the best solution to your business.

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