CN114424896A

CN114424896A - Plasma hand washing instrument

Info

Publication number: CN114424896A
Application number: CN202111626617.0A
Authority: CN
Inventors: 陈支通
Original assignee: Shenzhen National Research Institute of High Performance Medical Devices Co Ltd
Current assignee: Shenzhen National Research Institute of High Performance Medical Devices Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-03

Abstract

The utility model relates to a plasma appearance of washing hand, including the control unit, induction system, the reservoir chamber, plasma reaction chamber, plasma liquid storage room, communicate between reservoir chamber and the plasma reaction chamber, and be equipped with atomizing device between reservoir chamber and the plasma reaction chamber, atomizing device is used for vaporizing into gas with the liquid that transports to the plasma reaction chamber from the reservoir chamber, plasma reaction chamber and plasma liquid storage room communicate, the plasma reaction chamber is equipped with plasma generation device, plasma generation device is used for the ionized gas in order to obtain plasma body fluid. The plasma hand washing instrument can be used for hand disinfection. It can be placed in the home, office, building entrance, hospital, laboratory, etc. And due to the action of plasma liquid, the hand washing instrument also has the effects of treating wounds, skin diseases and the like.

Description

Plasma hand washing instrument

Technical Field

The invention relates to the technical field of cleaning supplies, in particular to a plasma hand washing instrument.

Background

With the advent of the new coronavirus (COVID-19), the importance of primary infection control measures has been more appreciated. The frequent use of alcohol hand sanitizers or soaps and water to clean hands is cited by the World Health Organization (WHO) as one of the most important sanitation measures to prevent the spread of infection. The Centers for Disease Control (CDC) in many countries reiterate this statement to reduce the spread of coronaviruses, influenza viruses and other infectious pathogens. The hands are one of the most common transmission pathways for many infections because they directly contact known pathogen entry ports, such as the mouth, nose, and eyes. The hand sanitizer is used for preventing the transmission of infection, wherein the infection is mainly caused by the transmission of hands, and further causes various diseases, such as nosocomial food-borne diseases and the like. Recent advances in plasma have led to the generation of cold plasma with ions/heavy particles close to room temperature, which has enormous application in biomedical engineering. The efficacy of cold plasma can be attributed to the following components: electrons, charged particles, Reactive Oxygen Species (ROS), Reactive Nitrogen Species (RNS), free radicals, Ultraviolet (UV) photons, molecules, electromagnetic fields, physical forces, and electrical fields. Cold plasma has been used for sterilization, wound healing, coagulation, skin diseases, dental treatment, cancer treatment, immunotherapy, etc.

The worldwide market for hand sanitizers was $ 9.19 billion in 2016, and $ 17.55 billion in 2023, with a projected compound annual growth rate of 9.9% between 2017 and 2023. The centers for disease control recommend strict and regular use of soap and water to maintain proper hand hygiene. In addition, they also suggest the use of alcohol-containing hand cleansers: gels, wet wipes and sprays when there is no soap and water and there is no significant soiling of the hands. Alcohol gel based hand sanitizers have been successfully commercialized to the healthcare and consumer markets. See, U.S. patent: pat. No.20150320041a, w.o.pat. No.2013052759a1, u.s.pat. No.9161982b2, and u.s.pat. No. 8562907b2. However, for the disinfectant to be effective, the concentration of ethanol should be at least 60%, which makes it flammable. It may be mistakenly ingested to cause intoxication like intoxication. In addition, alcohol based disinfectants may cause skin drying and irritation.

Cold plasma with room temperature and normal atmospheric pressure has a wide range of breakthrough biomedical applications. The cold plasma can effectively kill viruses, bacteria, yeasts, molds and other harmful microorganisms which are difficult to inactivate by the traditional method. The unique physical and chemical properties of plasma make possible medical applications, including sterilization, see in particular the chinese patents: CN 101284142B. In addition, plasma-generated active species and ultraviolet photons have bactericidal effects (see Pure appl. chem.74(2002) 349-358). Plasma is unique in that it can discharge in different modes and form coherent structures, allowing for instantaneous modulation of electric fields, reactive species and charged particles (see sci. rep.7(2017)12163. a large area plasma decontamination device gets patented for decontamination of biological and chemical events in medical, industrial and domestic situations, and us patent: u.s.pat. No.8377388b 2). Another cold plasma device for large area decontamination is used as a brush to disinfect surfaces and areas that would otherwise be difficult, time consuming and/or potentially cause exposure hazards under conventional disinfection methods. One method of sterilization is to expose the liquid to a helium glow plasma discharge to kill the microorganisms. The generation of cold plasma in a liquid can be used for the treatment of cancer cells, sterilization of infected tissue, inactivation of microorganisms, promotion of wound healing, skin regeneration and blood coagulation, and tooth bleaching/whitening, see in particular, U.S. patents: U.S. Pat. No. 20190076537a1.

Disclosure of Invention

The invention provides a plasma hand washing instrument capable of effectively killing bacteria and viruses.

The utility model provides a plasma hand washing instrument, which comprises a water storage chamber, a plasma reaction chamber and a plasma liquid storage chamber, wherein the water storage chamber is communicated with the plasma reaction chamber, and an atomization device is arranged between the water storage chamber and the plasma reaction chamber, the atomization device is used for vaporizing the liquid transported from the water storage chamber to the plasma reaction chamber into mist, the plasma reaction chamber is communicated with the plasma liquid storage chamber, the plasma reaction chamber is provided with a plasma generation device and an air inlet, the plasma reaction chamber is communicated with the outside through the air inlet, the plasma generation device is used for generating plasma, the plasma and the mist are mixed to form plasma body fluid, the plasma liquid storage chamber is used for storing plasma body liquid flowing from the plasma reaction chamber into the plasma liquid storage chamber, and the plasma liquid storage chamber is provided with a first opening through which the plasma body liquid can leave the plasma liquid storage chamber.

Optionally, the system further comprises a control unit and a sensing device; the first opening is provided with a first valve, the first valve and the sensing device are in signal connection with the control unit, when the sensing device senses that an object is close to the first opening, a first signal is sent to the control unit, and the control unit controls the first valve to be opened according to the first signal.

Optionally, the atomization device is provided with a first valve, the atomization device and the water storage chamber are isolated when the first valve is closed, and the atomization device and the water storage chamber are communicated with each other when the first valve is opened.

Optionally, the plasma includes reactive oxygen and/or reactive nitrogen.

Optionally, the first gas supplied to the plasma reaction chamber through the gas inlet comprises one or more of air, oxygen, and nitrogen.

Optionally, the atomizing device is an atomizer/vaporizer.

Optionally, a nozzle is provided at the first opening.

Optionally, the plasma liquid storage device further comprises a backflow channel and a liquid conveying device, the backflow channel is communicated with the water storage chamber and the plasma liquid storage chamber, and the liquid conveying device conveys plasma liquid in the plasma liquid storage chamber to the water storage chamber.

Optionally, the infusion device is a pump.

Optionally, the sensing device is one or more of an infrared sensor, a laser sensor and a microswitch.

According to the plasma hand washing apparatus of the above embodiment, since the atomizing means is provided, a user can change a large amount of liquid (such as water) into mist and then mix with the plasma obtained in the plasma reaction chamber to rapidly generate plasma liquid. The plasma body fluid can be used for cleaning and disinfecting the hands of a user, and can even be used for treating wounds or treating skin diseases.

Drawings

Fig. 1a is a schematic diagram of the internal structure of the plasma hand washing instrument.

FIG. 1b is a schematic side view of the plasma hand washing apparatus.

FIG. 1c is a schematic side view of the plasma hand washing apparatus at another angle.

FIG. 2a is a photograph of a plasma discharge in air and water vapor at atmospheric pressure;

fig. 2b is a photograph of the interaction of a multi-channel plasma discharge with water vapor.

Fig. 3 shows the plasma discharge voltage results.

Fig. 4 shows the results of plasma generated Reactive Oxygen and Nitrogen Species (RONS).

Description of reference numerals:

10. a plasma hand washing instrument; 110. a reservoir chamber; 120. an atomizing device; 130. a plasma reaction chamber; 131. an air inlet; 140. an induction device; 150. a control unit; 160. a nozzle; 170. a power plug; 180. an air duct; 190. a water injection port or a water pipe connector; 210. a plasma fluid collector; 220. a plasma liquid storage chamber; 221. a first opening; 230. a fluid infusion device; 240. and a return channel.

Detailed Description

The present disclosure is described in further detail below with reference to the figures and specific examples. Advantages and features of the present invention will become apparent from the following detailed description and claims. It is noted that the drawings are in greatly simplified form and that non-precision ratios are used for convenience and clarity only to aid in the description of the embodiments of the invention.

Fig. 1a shows a schematic internal structure diagram of the plasma hand washing instrument, fig. 1b shows a schematic side structure diagram of the plasma hand washing instrument, and fig. 1c shows a schematic side structure diagram of the plasma hand washing instrument. As shown in fig. 1a, 1b and 1c, the plasma hand washing apparatus 10 includes a water storage chamber 110, a plasma reaction chamber 130 and a plasma liquid storage chamber 220, the water storage chamber 110 is communicated with the plasma reaction chamber 130, an atomization device 120 is disposed between the water storage chamber 110 and the plasma reaction chamber 130, the atomization device 120 is used for converting the liquid transported from the water storage chamber 110 into the plasma reaction chamber 130 into mist, the plasma reaction chamber 130 is communicated with the plasma liquid storage chamber 220, the plasma reaction chamber 130 is provided with a plasma generation device and an air inlet 131, the first gas can enter the plasma reaction chamber 130 through the air inlet 131, the plasma generation device is used for converting the first gas into plasma, the plasma and the mist are mixed to form plasma body liquid, the plasma liquid storage chamber 220 is used for storing the plasma body liquid flowing from the plasma reaction chamber 130 into the plasma liquid storage chamber 220, the plasma liquid storage compartment 220 is provided with a first opening 221, through which first opening 221 the plasma liquid can leave the plasma liquid storage compartment 220. It should be understood that although the first gas is normally air, in some embodiments, the gas entering the plasma reaction chamber 130 may be adjusted by the user according to the circumstances, such as oxygen, nitrogen, argon, helium, and is not limited to air. It should be understood that the above solution can be used to obtain a plasma solution with disinfection function by converting a liquid (such as water) into a mist so that the plasma can be better and faster merged into the mist.

Optionally, the plasma generating device is mainly provided with a positive electrode and a negative electrode, and an electric field is formed by supplying power to the positive electrode and the negative electrode, and the electric field acts on the first gas located therein to generate plasma. It should be understood that the structure for generating plasma is various and not limited to the above-described structure.

Optionally, the plasma includes reactive oxygen species and reactive nitrogen species. Specifically, the first gas required to be supplied to the plasma reaction chamber 130 through the gas inlet includes one or more of air, oxygen, and nitrogen. Of course, other gases such as argon and helium may be included in addition to the above-mentioned gases. Active oxygen and active nitrogen generated by plasma are mixed with water to generate plasma liquid having an oxidizing ability to sterilize.

Optionally, the atomizing device 120 is provided with a first valve, the first valve separates the atomizing device 120 from the reservoir 110 when closed, and the first valve opens to allow the atomizing device 120 to communicate with the reservoir 110. The communication and closing of the atomization device 120 and the reservoir 110 are controlled by the first valve. It should be understood that instead of the aerosolization device 120 having a valve, a valve may be provided in the reservoir 120 to control the flow of liquid from the reservoir 110 to the aerosolization device 120. Also, in some embodiments, the aerosolizing device 120 may not be positioned below the reservoir 110, but rather may be positioned adjacent to the reservoir 110, such that liquid is communicated from the reservoir 110 to the aerosolizing device only when the water level in the reservoir 110 is above the conduit connecting the reservoir 110 to the aerosolizing device 120. A liquid pump may also be provided to deliver liquid from reservoir 110 to aerosolizing device 120. The present disclosure is not particularly limited as the manner of delivering water from the reservoir 110 to the atomizing device 120 is varied.

Alternatively, one end of the gas inlet 131 is connected to the air duct 180, the other end of the gas inlet 131 is connected to the plasma reaction chamber 130, and the air duct 180 is connected to the outside to introduce the first gas into the plasma reaction chamber 130. It should be understood that the manner of introducing the first gas into the plasma reaction chamber 130 is many, and is not limited to the above manner, for example, the plasma reaction chamber 130 may be directly disposed beside the housing without using an air duct, so that the gas inlet 131 is directly communicated with the outside.

Optionally, the atomizing device 120 is an atomizer/vaporizer. The atomizing device 120 is mainly used to change the liquid into mist.

Optionally, a nozzle 160 is disposed at the first opening 221.

Optionally, a return channel 240 and an infusion set 230 are further included, the return channel 240 communicates the reservoir chamber 110 with the plasma storage chamber 220, and the infusion set 230 delivers plasma fluid in the plasma storage chamber 220 to the reservoir chamber 110.

Optionally, the infusion device 230 is a pump.

With continued reference to fig. 1, in some embodiments, water may be added to reservoir 110 through a fill port or water line connection 190 or introduced into reservoir 110 through a connecting water line, and power plug 170 is connected to a power source or manipulated through a control panel using a battery in control unit 150. After the power supply is connected and the water is filled, the water in the water storage chamber 110 flows to the atomizing device 120 and is atomized into mist, then the mist is transported to the plasma reaction chamber 130, meanwhile, the ambient air is sucked in through the side surface of the plasma reaction chamber 130 and becomes plasma (as shown in fig. 2), and the plasma and the mist are mixed to form plasma body fluid. Among them, the plasma fluid in the plasma reaction chamber 130 contains ROS and RNS, as shown in fig. 3. Collected in the plasma fluid collector 210 and injected into the plasma fluid storage compartment 220 until full. Placing the hand under the plasma hand-washing apparatus triggers sensing device 140. When activated by the sensing device 140 and the control unit 150, the plasma liquid in the plasma liquid storage compartment 220 is sprayed to the hands through the plasma hand sanitizer nozzle 160. Both hands rub, covering all surfaces of the hands and fingers. Rub until the plasma solution is absorbed. Plasma bodily fluids may also be applied to any surface, equipment, instrument (such as medical devices or knives) or any other application requiring hygiene including medicine, food, agriculture, public/private spaces, Personal Protective Equipment (PPE) and the like.

In some embodiments, as shown in fig. 1, water is added to the reservoir 110 through a fill port or water line connection 190 or introduced into the reservoir 110 through a connecting water line, and the power plug 170 is connected to a power source or uses a battery in the control unit. After the power supply is connected and the water is filled, the water in the water reservoir 110 flows to the atomization device 120 and is atomized to form mist, and then moves to the plasma reaction chamber 130, and simultaneously, the ambient air (i.e., the first gas) is sucked through the air inlet 131 on the side of the plasma reaction chamber 130 and becomes plasma (the generated plasma is shown in fig. 2), and the plasma is mixed with the mist to form plasma body fluid. Among them, the plasma fluid in the plasma reaction chamber 130 contains ROS and RNS (as shown in fig. 3). Collected in the plasma fluid collector 210 and injected into the plasma fluid storage compartment 220 until full. If no one is using for an hour, 80% of the plasma fluid in the plasma fluid storage compartment 220 will be injected into the reservoir 110 through the infusion device 230 and a new round of plasma fluid preparation will begin; if more than 80% of the plasma fluid is used, a new round of preparation of the plasma fluid will also be performed. The plasma fluid is discharged through the plasma hand sanitizer nozzle 160 to the wound or dermatologic area. It is also possible to cup the plasma and then pour the plasma onto a surface, hand, sanitary appliance, or onto a wound, disease, or other application.

It should be understood that the control unit may be a single chip, a central processing unit, or other general processors, digital signal processors, application specific integrated circuits, Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, etc., and the disclosure is not limited in particular, and may receive signals, process and feedback the received signals.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the technical features mentioned in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The terms "plurality" and "a plurality" in the present disclosure and appended claims refer to two or more than two unless otherwise specified.

It will be apparent to those skilled in the art that various changes and modifications can be made in the invention disclosed herein without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A plasma hand washing instrument is characterized by comprising a water storage chamber, a plasma reaction chamber and a plasma liquid storage chamber, wherein the water storage chamber is communicated with the plasma reaction chamber, and an atomization device is arranged between the water storage chamber and the plasma reaction chamber, the atomization device is used for vaporizing the liquid transported from the water storage chamber to the plasma reaction chamber into mist, the plasma reaction chamber is communicated with the plasma liquid storage chamber, the plasma reaction chamber is provided with a plasma generation device and an air inlet, the plasma reaction chamber is communicated with the outside through the air inlet, the plasma generation device is used for generating plasma, the plasma and the mist are mixed to form plasma body fluid, the plasma liquid storage chamber is used for storing plasma body liquid flowing from the plasma reaction chamber into the plasma liquid storage chamber, and the plasma liquid storage chamber is provided with a first opening through which the plasma body liquid can leave the plasma liquid storage chamber.

2. The plasma hand washing apparatus of claim 1, further comprising a control unit and an induction device; the first opening is provided with a first valve, the first valve and the sensing device are in signal connection with the control unit, when the sensing device senses that an object is close to the first opening, a first signal is sent to the control unit, and the control unit controls the first valve to be opened according to the first signal.

3. The plasma hand washing apparatus of claim 2, wherein the aerosolization mechanism includes a first valve, the first valve being closed to isolate the aerosolization mechanism from the reservoir, and the first valve being open to permit communication between the aerosolization mechanism and the reservoir.

4. The plasma hand washing apparatus of claim 1, wherein the plasma includes reactive oxygen and/or reactive nitrogen.

5. The plasma hand washing apparatus of claim 4, wherein the first gas supplied to the plasma reaction chamber through the gas inlet comprises one or more of air, oxygen, and nitrogen.

6. The plasma hand washing apparatus of claim 1, wherein the atomizing device is an atomizer/vaporizer.

7. The plasma hand washing apparatus of claim 1, wherein the first opening is provided with a nozzle.

8. The plasma hand washing apparatus of claim 1, further comprising a return passage and an infusion device, the return passage communicating the reservoir chamber and the plasma reservoir chamber, the infusion device delivering the plasma fluid in the plasma reservoir chamber to the reservoir chamber.

9. The plasma hand washing apparatus of claim 8, wherein the fluid delivery device is a pump.

10. The plasma hand washing apparatus of claim 2, wherein the sensing device is one or more of an infrared sensor, a laser sensor, and a microswitch.