TITLE OF INVENTION:
Covid-19 PPE Kit Disinfection Chamber for its Efficient Disposal and Re-
usability
FIELD OF INVENTION:
The present invention falls under the field of medical devices and it is related to efficient disposal and re-usability of PPE Kits.
BACKGROUND OF THE INVENTION:
The current corona virus pandemic and environmental issues have reached global proportions and require unparalleled collective and individual efforts to control its spread, A recent survey has shown that proper disposal of ' Covid PPE kit has become a matter of concern as the virus on it can easily come in proximity with the mankind if not disposed properly. In light of that the current invention has been taken into account by designing a disinfection chamber that can remove or disinfect the virus over the kit. Although the elements such as HEPA filter, UV radiations, ionisers can remove or disinfect virus and bacteria but the efficacy for their removal is not well known especially for the corona virus. At commercial level no such set up has been developed. Therefore, the present design system will be beneficial for many aspects such as disposal of the kit and also reusability of it.
Although there are various techniques used to counter the pathogens such as application of silver ions, through lytic enzymes, chemicals, photocatalytic chemistry with titanium dioxide (TiCh) etc. but their efficacy is not well known. One of the most prevalent techniques used for removal of pathogens is photocatalytic chemistry with titanium dioxide through UV source as shown in Figure 1 (a b) but the behaviour of this method with corona virus is still undefined. The process includes chemical steps that produce reactive species

that in principal can cause fatal damage to microorganisms. The steps include formation of species such as hydroxyl radical, hydrogen peroxide, superoxide, conduction band electron, and valence band hole. Formation of singlet oxygen on irradiated Ti02 occurs and this reactive oxygen species damages various cell or viral functions or structures.Table 1 represents a list of temperature/duration/inactivation rates for corona virus pathogens.

OBJECTIVES OF INVENTION:
• Pathogen elimination including disinfection from Corona virus
• Reusability of Covid PPE kit
DESCRIPTION:
In the present design, the. system has been replaced by the high temperature forced convection technique to disinfect/kill corona-virus. Previous
studies have reported that the effect of temperature on corona virus is quite significant (Abraham et al. 2020, Kampf et al. 2020). Some studies have also been reported on coronavirus pathogens.
The chamber unit consists of a series of around seven heaters connected to an electrical source as shown is Figure 2. The heaters are meshed through spiral coils for providing a staggered path to the flowing air so that the residence time of the air inside the heating assembly can be increased. The electrical circuit will first supply power to the heating elements, the current will then make the small electric motor and fan both spin. The centrifugal movement of fan blade sucks the air, the air drawn by the fan is directed through the heaters and the air is warmed by forced convection. The assembly is also equipped with a thermostat sensor which will sense the temperature inside the assembly and will auto-cut the heaters from the electric source once the maximum temperature of the air is reached to 80'C or beyond depending upon the type of
the construction material for kit. The PPE kit can be placed inside the chamber for a fixed period of time.

Important accessories and general specifications
Regulating Valve
The proportion of air coming inside the chamber and the ambient air to be transferred into the unit is monitored through a regulating valve.
Suction motor
The air monitored through the regulating valve is pumped by a suction motor and draw it further into the unit.

It has been reported in recent times that polypropylene is the most frequently used fibre as an application of PPE kit as it is highly hydrophobic in nature and at the same time has a capacity for wicking, ensuring a dry and comfortable microclimate for the wearer. Contemporary kits are usually composed of three nonwoven fabric layers-a cover web, a filter layer and a shell fabric. The innermost cover web is a spun-bonded nonwoven mat and lies next to the wearer’s skin. The filter layer between the cover web and shell fabric is a nielt- blown nonwoven mat that primarily deters hazardous aerosol particles, microorganisms and bodily fluids. The shell fabric is the outermost layer exposed to the ambient environment. This fabric is made from a spun-bonded nonwoven mat and supports the filter layer.
It may also be added that in some instances the kit is given a spun bond coating so that the pores get blocked and there is no scope for the penetration of virus or bacteria within the kit. However, one of the consequences with the coating is that the kit becomes uncomfortable for the wearer due to no air channelization. Therefore, the constructional optimization of the kit is still an area of extensive research so that a perfect balance between the comfort to wearer and virus/bacteria entrapment is achieved.
Based on the above explanation the temperature within the proposed chamber will be kept around 80' C as the polypropylene fibre starts degrading at around 90 C. However, different combination of temperature and residence time depending upon the fibre type has been carried out in the invented design.

CLAIMS:
The present inventions claims to optimize the following operating parameters:-
1. Consistent flow rate of air to be maintained through the setup
2. Optimization of residence time given to the air and temperature is
maintained inside the chamber.
3. Extent of heat required for the heating unit
4. Optimizing the combination of time duration and level of heat
5. Extent of humidification
6. Size of the whole system is optimized. (8 m3 dimension)
7. Different combination of fibres and their efficacy as a function of PPE kit has been successfully examined