Medical waste sterilization apparatus

Abstract

The application discloses a medical waste disinfection equipment and belongs to the technical field of medical waste disinfection equipment. It comprises: a trolley with a disinfection chamber, a waste residue collection chamber and a waste liquid collection chamber; a disinfection container installed in the disinfection chamber, the disinfection container is provided with an openable upper cover and an end cover, and an overflow channel perpendicular to the bottom of the end cover, a pushing plate driven by a first driving mechanism is arranged in the disinfection container, and a microwave disinfection module is installed on the side wall of the disinfection container; a solid waste collection device is installed in the waste residue collection chamber and below the end cover; a waste liquid collection device is installed in the waste liquid collection chamber and communicates with the overflow channel. After the contaminated gauze, cotton balls and other medical wastes are collected by the disinfection container, microwave disinfection is carried out in the disinfection container, as a front disinfection process, the content of pathogenic microorganisms is reduced through the source, and the hospital infection prevention and control level is effectively improved.

Description

Technical Field

[0001] This invention relates to a medical waste disinfection device, belonging to the technical field of medical waste disinfection equipment. Background Technology

[0002] Medical waste disposal is a core aspect of infection control and prevention of its spread within hospitals. Gauze, cotton balls, and other common medical waste in hospitals often harbor large amounts of pathogens. If the disposal process is flawed, they can easily become a key source of cross-infection within the hospital. In traditional disposal models, this type of waste is usually directly disposed of in designated medical waste bins, which are then transported by specialized vehicles to centralized disposal sites. However, medical waste bins lack disinfection capabilities, and the bacterial gases accumulated inside are easily agitated and diffused into the surrounding environment, significantly increasing the risk of infection for medical staff and patients.

[0003] Currently, there are also small carts with disinfection functions, such as the Chinese patent: Multifunctional Integrated Disinfection Cart (application number: CN201820731734.0), which has ozone and ultraviolet disinfection functions. However, ozone and ultraviolet disinfection are not effective at disinfecting medical waste such as dried gauze and cotton balls, and are unable to kill deep-seated pathogens. At present, the main disinfection methods include: incineration disinfection, disinfectant spraying disinfection, ozone disinfection, steam disinfection, and microwave disinfection, but all of these methods have significant limitations. For example, while incineration can completely destroy pathogens in waste, it requires specialized high-temperature equipment and is limited by site and environmental requirements, making it impossible to implement on-site within the hospital; it must be transported to a professional incineration site for treatment. Disinfectant spraying can only act on the surface of waste and cannot penetrate into internal areas, failing to ensure deep disinfection and completely kill microorganisms hidden inside the waste. Ozone disinfection technology has a certain killing effect on bacteria in the air, but the disinfection effect of ozone molecules in dry items is insufficient to meet the high standards of hospitals for waste disposal. Steam disinfection has the advantage of thorough disinfection, but the disinfection cycle is long and the energy consumption cost is high, which contradicts the core need of hospitals for efficient and rapid daily disposal. Microwave disinfection technology has certain advantages in terms of disinfection effect and energy utilization efficiency, but its disinfection effect is closely related to the moisture content of the waste; too high or too low moisture content will lead to incomplete disinfection or energy waste.

[0004] To address the shortcomings of traditional disinfection technologies and the practical needs of nosocomial infection control, a medical waste disinfection device was designed. This device is specifically designed to pre-disinfect contaminated, relatively dry medical waste such as gauze and cotton balls, thereby reducing the content of pathogenic microorganisms at the source and effectively improving the level of nosocomial infection control. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a medical waste disinfection device that solves the current problem of lacking dedicated and efficient pre-disinfection equipment for contaminated medical waste such as gauze and cotton balls in hospitals.

[0006] The technical problem to be solved by this invention is achieved by the following technical solution:

[0007] A medical waste disinfection device, comprising:

[0008] The cart is equipped with a disinfection chamber, a waste residue collection chamber, and a waste liquid collection chamber;

[0009] A disinfection container is installed in the disinfection chamber. The disinfection container has an openable top cover and an end cover, as well as an overflow channel at the bottom perpendicular to the end cover. A pusher plate driven by a first drive mechanism is provided inside the disinfection container. A microwave disinfection module is installed on the side wall of the disinfection container.

[0010] A solid waste collection device is installed in the waste residue collection chamber and located below the end cover;

[0011] A waste liquid collection device is installed in the waste liquid collection chamber and connected to the overflow channel.

[0012] As a preferred example, the top cover and the end cover are driven to open and close with the disinfection container by the second drive mechanism and the third drive mechanism, respectively.

[0013] As a preferred embodiment, a perforated plate that can be driven to translate by a fourth driving mechanism is arranged parallel to the inner side of the end cap. Multiple pin holes are opened at corresponding positions on the perforated plate and the pusher plate. The bottom of the pusher plate has a scraper that can be inserted into the overflow channel. An injection needle that can pass through the pin holes is vertically fixed on the inner side of the end cap. The injection needle has a gas-liquid channel inside. Side holes are evenly distributed on the side of the gas-liquid channel. The gas-liquid channel is connected to a gas-liquid supply device.

[0014] As a preferred embodiment, the end cap has a gas-liquid jacket, the inner side of which is connected to the gas-liquid channel of the injection needle, and the outer side of which is connected to an ozone inlet pipe and a disinfectant inlet pipe.

[0015] As a preferred embodiment, the gas-liquid supply device is installed in the waste liquid collection chamber. The gas-liquid supply device includes an ozone generator and a disinfectant tank. The ozone inlet pipe is connected to the ozone generator through a gas valve, and the disinfectant inlet pipe is connected to the disinfectant tank through a liquid valve and a water pump. An ozone decomposer for ozone tail gas treatment is installed at the exhaust end of the waste liquid collection device, and an ozone concentration detector is installed at the exhaust end of the ozone decomposer.

[0016] As a preferred example, the injection needle has multiple wing strips fixed on its circumferential side along the axial direction. The injection needle and the wing strips have smoothly transitioned tips. Multiple side holes are opened between each pair of adjacent wing strips. The pinhole cross-sections of the orifice plate and the pusher plate are matched with the cross-sections of the injection needle and the wing strips.

[0017] As a preferred example, the disinfection container has a sealed heating and disinfection jacket below the overflow channel, a heating device is installed inside the heating and disinfection jacket, and the heating and disinfection jacket is connected to the waste liquid collection device through a shut-off valve and a pipe.

[0018] As a preferred example, the solid waste collection device in the waste collection chamber uses an electrically operated flip-top medical waste bin.

[0019] As a preferred embodiment, the first driving mechanism is an electric push rod that is sealed and fixed to the end of the disinfection container; the second driving mechanism is four vertically extending electric push rods fixed in the disinfection chamber for driving the four corners of the top cover; the third driving mechanism is two electric push rods fixed on both sides of the disinfection container for horizontally driving the end cover; and the fourth driving mechanism is an electric push rod that is sealed and fixed to the end cover.

[0020] As a preferred example, the electric actuator has a pressure sensor for detecting the magnitude of the thrust and a position encoder for detecting the position of movement.

[0021] The beneficial effects of this invention are:

[0022] (1) After collecting contaminated gauze, cotton balls and other medical waste in a disinfection container, microwave disinfection is carried out in the disinfection container as a pre-disinfection process to reduce the content of pathogenic microorganisms at the source and effectively improve the level of nosocomial infection control.

[0023] (2) The injection needle can inject liquid into relatively dry medical waste such as gauze and cotton balls. With the cooperation of the push plate and the perforated plate, the waste can be squeezed and moistened evenly, thereby further improving the efficiency of microwave sterilization.

[0024] (3) This disinfection container combines microwave, disinfectant, heating and ozone multiple disinfection methods, which overcomes the problem that single disinfection methods are not effective for disinfecting dry gauze, cotton balls and other medical waste. This equipment can work together according to disinfection needs, and can more thoroughly disinfect and pre-treat medical waste.

[0025] (4) The disinfected waste can be automatically pushed into the solid waste collection device by the pusher plate, and the waste liquid is collected through the overflow channel and the waste liquid collection device to complete the solid-liquid recycling. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the external structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of a sterilization container;

[0029] Figure 4 This is a top view of the disinfection room.

[0030] Figure 5 A schematic diagram of a partial structure of an injection needle with wings inserted into medical waste;

[0031] Figure 6 This is a schematic diagram of the initial structure of the sterilization container;

[0032] Figure 7 A schematic diagram of the structure of a disinfection container during the feeding and injection of disinfectant solution.

[0033] Figure 8 A schematic diagram of a perforated plate inside a sterilization container that separates the injection needle from medical waste;

[0034] Figure 9 This is a schematic diagram of a pusher plate that pushes the solid residue of medical waste after disinfection, compression and dehydration out of the disinfection container.

[0035] In the picture:

[0036] 1. Trolley; 101. Casters; 102. Disinfection room; 103. Waste residue collection room; 104. Waste liquid collection room;

[0037] 2. Disinfection container; 201. Top cover; 202. End cap; 203. Second drive mechanism; 204. Third drive mechanism; 205. Overflow channel; 206. First drive mechanism; 207. Push plate; 208. Scraper; 209. Microwave disinfection module; 210. Fourth drive mechanism; 211. Perforated plate; 212. Pinhole; 213. Injection needle; 214. Gas-liquid channel; 215. Side hole; 216. Wing strip; 217. Inner cavity; 218. Gas-liquid jacket; 219. Ozone inlet pipe; 220. Disinfectant inlet pipe; 221. Disinfectant tank; 222. Ozone decomposer; 223. Ozone concentration detector; 224. Water pump;

[0038] 3. Solid waste collection device;

[0039] 4. Waste liquid collection device;

[0040] 5. Heated and sterilized interlayer; 501. Heating device; 502. Shut-off valve;

[0041] 6. Medical waste. Detailed Implementation

[0042] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific illustrations.

[0043] like Figure 1 , Figure 2 As shown, this medical waste disinfection equipment includes a trolley 1 with casters 101 and a disinfection container 2 installed inside the trolley 1. The trolley 1 has a disinfection chamber 102, a waste residue collection chamber 103, and a waste liquid collection chamber 104. The disinfection container 2 is installed inside the disinfection chamber 102 and has an openable top cover 201 and an end cover 202. A solid waste collection device 3 is installed inside the waste residue collection chamber 103 and located below the end cover 202. A waste liquid collection device 4 is installed inside the waste liquid collection chamber 104 and communicates with an overflow channel 205. The solid waste collection device 3 in the waste residue collection chamber 103 is an electrically operated flip-top medical waste bin.

[0044] like Figure 3 , Figure 4 As shown, the disinfection container 2 has an overflow channel 205 at the bottom perpendicular to the end cap 202. Inside the disinfection container 2 is a pusher plate 207 driven by a first drive mechanism 206. The bottom of the pusher plate 207 has a scraper 208 that inserts into the overflow channel 205. When the pusher plate 207 reciprocates within the disinfection container 2, the scraper 208 can be used to clear the overflow channel 205 and prevent blockage. A microwave disinfection module 209 is installed on the side wall of the disinfection container 2 to microwave disinfect waste inside the container. A commercially available, relatively mature flat-plate microwave disinfection module 209 (typically used in industrial and medical disinfection fields) is used. It employs a microwave generator composed of multiple magnetrons arranged in an array, with multiple magnetrons evenly distributed on the side wall of the cavity. Microwave energy is distributed through waveguides or couplers to avoid heating dead zones. The top cap 201 and the end cap 202 are opened and closed by the second drive mechanism 203 and the third drive mechanism 204, respectively.

[0045] An orifice plate 211, which can be driven to translate by a fourth drive mechanism 210, is arranged parallel to the inner side of the end cap 202. Multiple pinholes 212 are opened at corresponding positions on the orifice plate 211 and the pusher plate 207. An injection needle 213, which can pass through each pinhole 212, is vertically fixed inside the end cap 202. The injection needle 213 has a gas-liquid channel 214 inside, with side holes 215 evenly distributed on its sides. The gas-liquid channel 214 is connected to a gas-liquid supply device. The pusher plate 207 pushes the waste material into the container towards the injection needle 213, through which disinfectant is injected for immersion disinfection. After the disinfectant injection is completed, the orifice plate 211 can detach the material from the injection needle 213, allowing the material to be returned to the center of the disinfection container 2 for further microwave disinfection or other disinfection methods.

[0046] like Figure 5 As shown, the injection needle 213 can also be switched to inject ozone disinfection gas. In order for ozone to diffuse efficiently and evenly, multiple wing strips 216 along the axial direction are fixed on the circumferential side of the injection needle 213. The ends of the injection needle 213 and the wing strips 216 are smoothly transitioned tips. The tips are inserted into the material, and the wing strips 216 support the material to form an inner cavity 217 for diffusion, which increases the diffusion area. Ozone overflows from multiple side holes 215 opened between each pair of adjacent wing strips 216, penetrating the moistened material. Dissolved ozone has more complete mass transfer and longer contact with microorganisms. It has both direct oxidation and indirect oxidation by hydroxyl radicals. It has a fast sterilization speed, broad spectrum and no harmful residues. The disinfection efficiency is far superior to gaseous ozone.

[0047] The cross-sections of the pinholes 212 of the perforated plate 211 and the pusher plate 207 are matched with the cross-sections of the injection needle 213 and the wing strip 216. This allows the pusher plate 207 to be fitted onto the injection needle 213 to continue squeezing and expelling excess moisture, so that the material finally collected is no longer too wet.

[0048] like Figure 3 As shown, in some embodiments, the overflow channel 205 of the disinfection container 2 has a sealed heating disinfection jacket 5 below it. A heating device 501 is installed inside the heating disinfection jacket 5. The heating disinfection jacket 5 is connected to the waste liquid collection device 4 through a shut-off valve 502 and a pipe.

[0049] When the shut-off valve 502 is closed, the heating and disinfection jacket 5 can intercept the disinfectant flowing out of the overflow channel 205. The heating device 501 can heat the disinfectant to sterilize the materials inside the disinfection container 2. After the heating and disinfection is completed, the shut-off valve 502 is opened, and the excess disinfected waste liquid flows into the waste liquid collection device 4 for storage.

[0050] like Figures 1-4 As shown, in some embodiments, the first drive mechanism 206 is an electric push rod sealed and fixed to the end of the sterilization container 2; the second drive mechanism 203 is four vertically extending electric push rods fixed inside the sterilization chamber 102 for driving the four corners of the upper cover 201; the third drive mechanism 204 is two electric push rods fixed to both sides of the sterilization container 2 for horizontally driving the end cover 202; and the fourth drive mechanism 210 is an electric push rod sealed and fixed to the end cover 202. The electric push rods have pressure sensors to detect the magnitude of the thrust and position encoders to detect the movement position. During initialization, the pressure magnitude and position stroke of each electric push rod when performing the corresponding action are preset to achieve the purpose of sealing and locking the upper cover 201 and the end cover 202, and to set the stroke position of the pusher plate 207 and the perforated plate 211. The upper cover 201 and the end cover 202 complete the opening and closing actions according to the position settings.

[0051] The operating steps for this equipment are as follows:

[0052] like Figure 6 As shown, in the initial state: the pusher plate 207 and the perforated plate 211 are respectively attached to the inner walls of both ends of the sterilization container 2. Open the top cover 201, put in dry medical waste 6 such as contaminated gauze and cotton balls, and then close the top cover 201.

[0053] like Figure 7 As shown, the gas-liquid disinfection process is as follows: First, the medical waste 6 is squeezed and punctured by the pusher plate 207, pushing the medical waste 6 onto the injection needle 213 until the injection needle 213 is fully inserted; then, the injection needle 213 can evenly distribute disinfectant and / or ozone into the medical waste 6 through the side hole 215; finally, the pusher plate 207 pushes, squeezes, and dehydrates the medical waste 6 according to the pressure value, and the waste liquid flows into the waste liquid collection device 4 through the overflow channel 205; before flowing into the waste liquid collection device 4, if it is necessary to heat steam disinfection, the shut-off valve 502 can be closed, leaving the waste liquid in the heating disinfection jacket 5, and the heating device 501 will heat it to generate steam disinfection.

[0054] like Figure 8 As shown, medical waste 6 retracts: the pusher plate 207 returns to its initial position, and the perforated plate 211 can separate the medical waste 6 from the injection needle 213, and then microwave disinfection can be performed. At this time, due to the injection of disinfectant and the uniform wetting by squeezing, the water molecules absorb microwave energy and can quickly vibrate and generate heat through friction. The high temperature destroys the protein and nucleic acid structure of microorganisms to achieve sterilization. Compared with the dry state, it can enhance the deep disinfection effect on medical waste 6.

[0055] like Figure 9 As shown, solid waste collection: After disinfection is completed, the end cap 202 is fully opened, and the pusher plate 207 pushes out the medical waste 6, which falls into the solid waste collection device 3.

[0056] The top cover 201 and end cover 202 of the disinfection container 2 are sealed to the body of the container 2 by high-temperature resistant sealing gaskets and are electrically opened and closed by an electric push rod, reducing human hand contact. After the top cover 201 is raised by the electric push rod, medical waste 6 can be put into the disinfection container 2. After the end cover 202 and the flip-top of the medical waste bin are opened, the squeezed and dried solid waste can be pushed out by the push plate 207 and fall into the medical waste bin. Then the medical waste bin is closed and the end cover 202 is restored to a sealed state, completing the storage of disinfected solid waste.

[0057] like Figure 2 , Figure 3As shown, in some embodiments, the end cap 202 has a gas-liquid jacket 218. The inner side of the gas-liquid jacket 218 is connected to the gas-liquid channel 214 of the injection needle 213, and the outer side of the gas-liquid jacket 218 is connected to an ozone inlet pipe 219 and a disinfectant inlet pipe 220. The gas-liquid supply device is installed in the waste liquid collection chamber 104. The gas-liquid supply device includes an ozone generator (not shown in the figure) and a disinfectant tank 221. The ozone inlet pipe 219 is connected to the ozone generator through a gas valve (not shown in the figure), and the ozone generator supplies gas to the inside of the ozone inlet pipe 219 through the open gas valve. The disinfectant inlet pipe 220 is connected to the disinfectant tank 221 through a liquid valve (not shown in the figure) and a water pump 224. An ozone decomposer 222 for ozone tail gas treatment is installed at the exhaust end of the waste liquid collection device 4, and an ozone concentration detector 223 is installed at the exhaust end of the ozone decomposer 222.

[0058] To ensure that the air and liquid flow evenly to each injection needle 213, a gas-liquid jacket 218 is provided. Before gas-liquid sterilization, the shut-off valve 502 is opened to maintain pressure balance between the inside and outside.

[0059] Disinfection with disinfectant: When the liquid valve is opened, the water pump 224 draws the disinfectant from the disinfectant tank 221 and enters the gas-liquid jacket 218 through the disinfectant inlet pipe 220. The disinfectant is then injected into the material through the injection needle 213 to achieve disinfection with disinfectant.

[0060] Ozone disinfection: The ozone generator produces ozone gas, which enters the gas-liquid jacket 218 through the ozone inlet pipe 219. It is then evenly distributed into the material through the side holes 215 of multiple injection needles 213, ensuring thorough contact with the deeper layers of the material for superior ozone disinfection. The ozone decomposer 222 catalytically decomposes the ozone exhaust gas from the exhaust end of the waste liquid collection device 4. Under normal circumstances, the decomposition rate of the ozone decomposer 222 is much greater than the injection rate of the ozone generator, thus completely decomposing the ozone exhaust gas. The ozone concentration detector 223 detects the concentration at the exhaust end of the ozone decomposer 222. When the detected ozone concentration meets the emission standards, emission can continue; when it does not meet the emission standards, the ozone generator stops operating to allow for subsequent maintenance and replacement of the ozone decomposer 222.

[0061] This medical waste disinfection equipment has multiple disinfection methods, including single disinfection and synergistic disinfection.

[0062] I. Single-item disinfection methods, including:

[0063] 1. Microwave Disinfection: The microwave disinfection module 209 on the side of the disinfection container 2 directly disinfects the medical waste 6 (non-metallic) placed inside. However, microwave disinfection alone is not effective for dry gauze, cotton balls, and other medical waste 6. This is because the principle of microwave disinfection relies on the polar molecules (mainly water molecules) in the medium absorbing microwave energy and then rapidly vibrating and rubbing to generate heat. This heat is then used to destroy the protein and nucleic acid structures of microorganisms through high temperature, thus achieving sterilization. However, dry gauze and cotton balls have extremely low water content and lack sufficient polar water molecules to absorb and convert microwave energy, failing to generate enough heat to reach the sterilization threshold. In addition, their loose fiber structure disperses microwave energy, further reducing local heat generation efficiency, ultimately resulting in poor disinfection.

[0064] 2. Disinfectant disinfection: Disinfectant can be used to soak and disinfect medical waste. However, it is not effective for disinfecting dry gauze and cotton balls. This is because, in a short time, the disinfectant cannot penetrate evenly into the pores of the dry gauze and cotton balls, and cannot fully contact the microorganisms attached to the deeper layers. The disinfectant tends to remain on the surface and cannot penetrate into the interior, ultimately leading to incomplete disinfection.

[0065] 3. Heat Disinfection: Heating the overflowing disinfectant solution after injection generates steam, which can be used for steam disinfection of medical waste. However, heating a small amount of liquid is insufficient to penetrate the interior of dry gauze or cotton balls for thorough disinfection; heating a large amount of liquid increases energy consumption. Therefore, a larger amount of disinfectant solution is only injected and heat disinfection is used for more thorough disinfection when disinfecting high-risk, stubborn pathogens.

[0066] 4. Ozone disinfection: Ozone can disinfect air and medical waste, and has good penetration. However, ozone is not effective at disinfecting dry gauze and cotton balls. The core reason is that in a dry environment, ozone has difficulty making sufficient contact with microorganisms in the pores of gauze and cotton balls, and it lacks the water-mediated oxidative enhancement effect.

[0067] Therefore, any existing single disinfection method has its own limitations. However, this disinfection equipment integrates multiple disinfection methods within a single disinfection container 2, thus overcoming these shortcomings.

[0068] II. Collaborative disinfection methods mainly include:

[0069] 1. Synergistic Disinfection with Microwave and Disinfectant: The disinfection effect is significantly improved when microwaves are used in conjunction with disinfectant to moisten gauze and cotton balls. The core of this is the synergistic mechanism formed by the thermal effect of microwaves and the chemical bactericidal effect of disinfectant. The moistened gauze and cotton balls contain sufficient moisture, which can act as a polar medium for microwaves to absorb microwave energy, generate heat through rapid vibration and friction, and destroy the protein and nucleic acid structure of microorganisms through high temperature. At the same time, the disinfectant can penetrate evenly into the fiber pores, fully contact the deep microorganisms, and exert a chemical inactivation effect. Simultaneously, the heat generated by microwaves can also accelerate the movement rate of disinfectant molecules, enhance their ability to penetrate the cell membrane of microorganisms and the efficiency of chemical reactions. The dual effect of high temperature and chemical sterilization greatly improves the inactivation effect. Compared with microwave disinfection or disinfectant disinfection alone, the synergistic effect can effectively reduce disinfection time, reduce the amount of disinfectant used, and cover more types of microorganisms, avoiding disinfection blind spots.

[0070] 2. Synergistic disinfection of disinfectant, ozone, and microwave: By adding ozone disinfection to the synergistic disinfection of microwave and disinfectant, a triple synergistic mechanism of thermal effect, chemical inactivation, and strong oxidation is formed, which further enhances the disinfection effect.

[0071] The thermal effect of microwaves creates a better working environment for ozone and disinfectants: the moisture in the damp gauze and cotton balls absorbs microwave energy and generates heat, which on the one hand accelerates the movement rate of disinfectant molecules, enhances their penetration into microbial cell membranes and chemical reaction efficiency; on the other hand, it increases the solubility of ozone in a humid environment, promotes the decomposition of ozone to generate more hydroxyl radicals (・OH), and strengthens the indiscriminate oxidation ability.

[0072] Disinfectants enhance disinfection effects with ozone and microwaves: Disinfectants (such as chlorine-containing disinfectants and alcohol-based disinfectants) can directly destroy the enzyme system and nucleic acid structure of microorganisms; ozone can utilize water-mediated oxidation enhancement to oxidize and inactivate microbial strains resistant to disinfectants, while decomposing organic byproducts generated during disinfection to avoid residual pollution; at the same time, disinfectants provide polar molecules for microwaves, which can enhance the vibration effect and increase frictional heat.

[0073] Therefore, the combination of the three has a stronger synergistic disinfection effect. Based on this effect, this integrated disinfection equipment was designed, which can achieve the synergistic effect of multiple disinfection methods within a volume the size of a small cart 1. It can also automatically separate and store solids and liquids after disinfection, reducing the risk of nosocomial infection and facilitating subsequent harmless treatment in accordance with medical standards.

[0074] The above description outlines the main technical features, basic principles, and beneficial effects of this invention. The scope of protection claimed by this invention is defined by the appended claims and their equivalents. Those skilled in the art should understand that this invention is not limited to the above embodiments, and various equivalent changes can be made without departing from the spirit and description of this invention; these equivalent changes will also fall within the scope of protection of this invention.

Claims

1. A medical waste disinfection device, characterized in that it include: The trolley (1) has a disinfection chamber (102), a waste residue collection chamber (103) and a waste liquid collection chamber (104); A disinfection container (2) is installed inside the disinfection chamber (102). The disinfection container (2) has an openable top cover (201) and an end cover (202), as well as an overflow channel (205) at the bottom perpendicular to the end cover (202). A pusher plate (207) driven by a first drive mechanism (206) is provided inside the disinfection container (2). A microwave disinfection module (209) is installed on the side wall of the disinfection container (2). Solid waste collection device (3) is installed in the waste residue collection chamber (103) and located below the end cap (202); Waste liquid collection device (4) is installed in the waste liquid collection chamber (104) and connected to the overflow channel (205); The end cap (202) has a perforated plate (211) that can be driven to translate by the fourth driving mechanism (210) arranged parallel to the inner side. The perforated plate (211) and the pusher plate (207) have a plurality of pin holes (212) at corresponding positions. The bottom of the pusher plate (207) has a scraper (208) that can be inserted into the overflow channel (205). The end cap (202) has an injection needle (213) that can pass through the pin holes (212) one by one. The injection needle (213) has a gas-liquid channel (214) inside. The gas-liquid channel (214) has side holes (215) evenly distributed on the side. The gas-liquid channel (214) is connected to the gas-liquid supply device. The end cap (202) has a gas-liquid interlayer (218), the inner side of which is connected to the gas-liquid channel (214) of the injection needle (213), and the outer side of which is connected to an ozone inlet pipe (219) and a disinfectant inlet pipe (220). The gas-liquid supply device is installed in the waste liquid collection chamber (104). The gas-liquid supply device includes an ozone generator and a disinfectant tank (221). The ozone inlet pipe (219) is connected to the ozone generator through a gas valve. The disinfectant inlet pipe (220) is connected to the disinfectant tank (221) through a liquid valve and a water pump (224). An ozone decomposer (222) for ozone tail gas treatment is installed at the exhaust end of the waste liquid collection device (4). An ozone concentration detector (223) is installed at the exhaust end of the ozone decomposer (222). The injection needle (213) has multiple wing strips (216) fixed on its circumferential side. The injection needle (213) and the wing strips (216) have smooth transition tips. Multiple side holes (215) are opened between each pair of adjacent wing strips (216). The cross-section of the pin hole (212) of the perforated plate (211) and the pusher plate (207) matches the cross-section of the injection needle (213) and the wing strips (216).

2. The medical waste disinfection equipment according to claim 1, characterized in that, The top cover (201) and the end cover (202) are driven to open and close with the disinfection container (2) by the second drive mechanism (203) and the third drive mechanism (204), respectively.

3. The medical waste disinfection equipment according to claim 2, characterized in that, The first driving mechanism is an electric push rod that is sealed and fixed at the end of the disinfection container (2). The second driving mechanism (203) is four vertically telescopic electric push rods fixed in the disinfection chamber (102) for driving the four corners of the top cover (201). The third driving mechanism (204) is two electric push rods fixed on both sides of the disinfection container (2) for horizontally driving the end cover (202). The fourth driving mechanism (210) is an electric push rod that is sealed and fixed on the end cover (202).

4. The medical waste disinfection equipment according to claim 3, characterized in that, The electric actuator has a pressure sensor to detect the magnitude of the thrust and a position encoder to detect the position of movement.

5. The medical waste disinfection equipment according to claim 1, characterized in that, The disinfection container (2) has a sealed heating and disinfection jacket (5) below the overflow channel (205). A heating device (501) is installed in the heating and disinfection jacket (5). The heating and disinfection jacket (5) is connected to the waste liquid collection device (4) through a shut-off valve (502) and a pipe.

6. The medical waste disinfection equipment according to claim 1, characterized in that, The solid waste collection device (3) in the waste collection chamber (103) adopts an electrically flip-top medical waste bin.

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