Surgical operating instrument disinfecting and killing equipment and use method thereof

Abstract

The invention relates to sterilizing equipment for surgical instruments and a using method thereof, and belongs to the technical field of sterilizing of medical instruments, the sterilizing equipment comprises a closed sterilizing box body, an instrument fixing frame, a waste liquid collecting tray, a plasma generating module, a vacuum extraction system, an ultrasonic atomization device, a central controller, a vacuum pulse drying system, a stainless steel equipment box and a steam generator, the instrument fixing frame and the waste liquid collecting tray are both arranged in the closed sterilization box body, and the closed sterilization box body, the plasma generation module, the vacuum extraction system, the ultrasonic atomization device, the central controller and the vacuum pulse drying system are all installed in the stainless steel equipment box. According to the sterilizing and killing equipment for the surgical operating instruments, through the multi-stage pretreatment, self-adaptive sterilization mode selection, plasma enhanced permeation and vacuum pulse drying technologies, deep sterilization of the surfaces and pipe cavities of the instruments is achieved, and the problems of sterilization dead angles of the complex instruments, damage to heat-sensitive materials and wet packaging are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device disinfection and sterilization, and particularly to a surgical instrument disinfection and sterilization device and its usage method. Background Art

[0002] Strict disinfection and sterilization of surgical instruments are the core requirements of medical safety. Surgery will damage the skin or mucous membrane barrier of the human body. The instruments directly contact sterile tissues, body cavities or blood. If pathogenic microorganisms such as bacteria, viruses, fungi, and spores are carried on the instruments, they will directly enter the human body and cause serious infections. Surgical site infections can cause mild symptoms such as incision redness, pain, purulence, and delayed healing, increasing the patient's pain and hospital stay; in severe cases, they may cause deep tissue infections, organ abscesses, sepsis, septic shock, and even death.

[0003] Strict disinfection and sterilization can effectively kill or remove all possible pathogens on the instruments, cut off the infection transmission route, and prevent cross-infection caused by instrument contamination. Traditional surgical instruments are usually disinfected and sterilized by steam, which has the following defects: 1. The sterilization of lumen instruments is not thorough. The sterilant or gas is prone to form an air block in the lumen, and the active ingredients cannot reach the deep area; 2. Thermosensitive instruments are severely damaged. The high temperature steam with a temperature of up to 132°C causes deformation of the endoscope camera and aging of the plastic catheter; 3. Organic residues interfere with sterilization. Blood and tissue residues wrap microorganisms to form a biofilm, inactivating the sterilant; 4. Wet packs are prone to cause secondary contamination. Therefore, a surgical instrument disinfection and sterilization device and its usage method are proposed. Through multi-stage pretreatment, adaptive sterilization mode selection, plasma enhanced penetration, and vacuum pulse drying technology, deep sterilization of the instrument surface and lumen is achieved. Summary of the Invention

[0004] The present invention provides a surgical instrument disinfection and sterilization device and its usage method, which solves the problems of sterilization dead angles of complex instruments, damage to thermosensitive materials, and wet packs.

[0005] The solution of the present invention to the above technical problems is as follows: A surgical instrument disinfection and sterilization device includes an airtight sterilization box, an instrument fixing rack, a waste liquid collection tray, a plasma generation module, a vacuum extraction system, an ultrasonic atomization device, a central controller, a vacuum pulse drying system, a stainless steel equipment box, and a steam generator. The instrument fixing rack and the waste liquid collection tray are both placed inside the airtight sterilization box. The airtight sterilization box, the plasma generation module, the vacuum extraction system, the ultrasonic atomization device, the central controller, and the vacuum pulse drying system are all installed inside the stainless steel equipment box. The stainless steel equipment box is provided with a maintenance access door, and the airtight sterilization box is provided with a sealing door. The sealing door is provided with an observation window, a pressure sensor, and a temperature and humidity sensor. The steam generator is connected to the airtight sterilization box through a steam pump;

[0006] The usage method includes the following steps:

[0007] S1. Load the medical device, stably place the medical device in the device fixing rack of the airtight sterilization box, close the sealing door for sealing;

[0008] S2. Select the mode. The central controller selects the sterilization mode based on the device material, structural complexity and pollution level. For heat-sensitive devices, mode A is adopted to generate 45 - 55 °C plasma low-temperature sterilization through the plasma generation module. For lumen devices, mode B is adopted to perform ultrasonic atomization plus vacuum pressure penetration sterilization through the vacuum extraction system and ultrasonic atomization device. For metal devices, mode C is adopted to perform high-temperature steam-assisted plasma sterilization using the plasma generation module and steam generator. If a multi-modal sterilization cycle is required, select mode D;

[0009] S3. Standard multi-modal sterilization cycle mode. a. Pre-vacuum stage: The vacuum extraction system reduces the pressure in the cavity of the airtight sterilization box to 0.5 kPa and maintains it for 5 min;

[0010] b. Sterilant injection: The ultrasonic atomization device releases a sterilizing aerosol with a particle size ≤ 5 μm;

[0011] c. Plasma activation: The plasma generation module applies a 13.56 MHz radio frequency field to the atomization area to generate reactive oxygen free radicals;

[0012] d. Pulse penetration: Perform 3 - 5 times of 50 kPa → 5 kPa pressure pulsation through the vacuum extraction system;

[0013] S4. Vacuum pulse drying: The vacuum extraction system and the vacuum pulse drying system alternately inject sterile hot air and evacuate the air in the airtight sterilization box at 60 °C until the reading of the temperature and humidity sensor ≤ 3%.

[0014] On the basis of the above technical solutions, the present invention can also be improved as follows.

[0015] Further, the plasma generation module, the vacuum extraction system, the ultrasonic atomization device, and the vacuum pulse drying system are all connected to the airtight sterilization box. The plasma generation module can fill the airtight sterilization box with an argon-oxygen mixed plasma to generate atomic oxygen / hydroxyl free radicals under a radio frequency field. The argon-oxygen mixed plasma generates atomic oxygen / hydroxyl free radicals under a radio frequency field. The vacuum extraction system can extract the air in the airtight sterilization box. The ultrasonic atomization device can release a sterilizing aerosol with a particle size ≤ 5 μm. The vacuum pulse drying system can discharge the air in the airtight sterilization box.

[0016] Further, the central controller is signal-connected to the plasma generation module, the vacuum extraction system, the ultrasonic atomization device, the vacuum pulse drying system, the air pressure sensor, and the temperature and humidity sensor.

[0017] Furthermore, the plasma generation module includes a plasma generator, an argon-oxygen gas mixing and proportioning machine, an argon gas compressed gas cylinder, an oxygen gas compressed gas cylinder, a first delivery pipe, and a first electromagnetic one-way valve. The argon gas compressed gas cylinder and the oxygen gas compressed gas cylinder are connected to the argon-oxygen gas mixing and proportioning machine. The argon-oxygen gas mixing and proportioning machine is connected to the plasma generator. The plasma generator is connected to the first electromagnetic one-way valve through the first delivery pipe. The first electromagnetic one-way valve is connected to the airtight sterilization box body. The argon-oxygen gas mixing and proportioning machine can mix and proportion the argon gas compressed gas cylinder and the oxygen gas compressed gas cylinder, and the proportioned gas is transmitted to the plasma generator. The plasma generator can apply a 13.56 MHz radio frequency field to the atomization area to generate reactive oxygen free radicals.

[0018] Furthermore, the vacuum extraction system includes a vacuum pump main body, an exhaust hood, and a second electromagnetic one-way valve. The vacuum pump main body is connected to the exhaust hood and the second electromagnetic one-way valve. The other vacuum pump main body is connected to a lumen instrument air extraction nozzle. The vacuum pump main body can extract the air in the airtight sterilization box body to achieve a sealing effect.

[0019] Furthermore, the second electromagnetic one-way valve is connected to the airtight sterilization box body. The exhaust hood is provided with a protective filter screen and is connected to the hospital exhaust pipeline.

[0020] Furthermore, the ultrasonic atomization device includes a hydrogen peroxide liquid tank, a peracetic acid liquid tank, an electric control three-way valve, a second delivery pipe, a third delivery pipe, a first atomization nozzle, a second atomization nozzle, and an ultrasonic atomizer. The hydrogen peroxide liquid tank and the peracetic acid liquid tank are connected to the ultrasonic atomizer through the electric control three-way valve. The output pipe of the ultrasonic atomizer is connected to the second delivery pipe and the third delivery pipe through the electric control three-way valve. The second delivery pipe is connected to the first atomization nozzle. The third delivery pipe is connected to the second atomization nozzle. The ultrasonic atomizer can atomize the hydrogen peroxide aerosol and discharge it into the airtight sterilization box body for disinfection. The second atomization nozzle can be connected to the lumen instrument, so that the hydrogen peroxide aerosol is atomized and transmitted into the lumen instrument for disinfection.

[0021] Furthermore, the second atomization nozzle is provided with a plurality of nozzle orifices, and the nozzle orifices are provided with a plurality of diameter models. One vacuum pump main body is connected to an air extraction nozzle, and the air extraction nozzle is provided with a plurality of diameter models of suction ports corresponding to the second atomization nozzle.

[0022] Further, the vacuum pulse drying system includes a medical air compressor, a HEPA-ULPA filter, an air electric heater, a sterile gas storage tank, a pulse solenoid valve, and a drying air duct. The intake port of the medical air compressor is connected to the HEPA-ULPA filter, and the outlet end of the medical air compressor is sequentially connected to the air electric heater, the sterile gas storage tank, the pulse solenoid valve, and the drying air duct. The air compressor can press sterile air into it through the HEPA-ULPA filter, so that the heated sterile air can be stored in it. Once it is turned on, pulsed hot air can be introduced to quickly dry the instruments.

[0023] Further, the drying air duct penetrates into the sealed sterilization chamber, and the connection part is sealed. The drying air duct is evenly provided with a plurality of one-way drying nozzles.

[0024] The beneficial effects of the present invention are as follows: The present invention provides a surgical instrument disinfection and sterilization device and its usage method, having the following advantages:

[0025] 1. Overcome the problem that the sterilization dead corners of lumen instruments are difficult to clean. Through the vacuum pulsation system, a strong negative pressure suction force is generated. The nozzle directly penetrates into the inside of the instrument to form a 2m / s turbulent flow, enabling the sterilant to penetrate the micro-lumen with a length-diameter ratio of up to 30:1, thereby effectively and quickly disinfecting and sterilizing the lumen instruments, and solving the problem that traditional steam and ethylene oxide sterilizers are difficult to penetrate the slender lumen with a length-diameter ratio > 10:1;

[0026] 2. Break through the limitation of damage to heat-sensitive materials. Atomic oxygen / hydroxyl radicals are generated by the argon-oxygen mixed plasma under the radio frequency field. The sterilization efficiency is equivalent to that at 132°C, but the temperature is reduced by 60%. Thus, it can process endoscopes with precision circuits, polymer material catheters, etc., and solve the problems of deformation of the endoscope camera and aging of plastic catheters caused by traditional high-temperature steam (132°C);

[0027] 3. Root out the hidden danger of "wet pack" pollution. By alternately injecting 60°C sterile hot air and deeply evacuating through the pulsed hot air vacuum drying module, and real-time monitoring through the humidity sensor, the drying time can be effectively shortened, solving the problem of dampness of the instrument package caused by incomplete traditional drying and the growth of bacteria;

[0028] 4. Such a surgical instrument disinfection and sterilization device realizes the deep sterilization of the instrument surface and lumen through multi-stage pretreatment, adaptive sterilization mode selection, plasma enhanced penetration, and vacuum pulse drying technology, solves the problems of sterilization dead corners of complex instruments, damage to heat-sensitive materials, and wet packs, and can effectively improve the disinfection and sterilization efficiency of surgical instruments and has good applicability.

[0029] The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and implement it according to the content of the specification, the following describes the preferred embodiments of the present invention in detail with reference to the accompanying drawings. The specific implementation manners of the present invention are given in detail by the following embodiments and their accompanying drawings. Description of the Drawings

[0030] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0031] Figure 1 is a schematic structural diagram of a surgical instrument disinfection and sterilization device and its usage method provided by an embodiment of the present invention;

[0032] Figure 2 is a front view of a surgical instrument disinfection and sterilization device and its usage method provided by an embodiment of the present invention;

[0033] Figure 3 is a schematic structural diagram of a plasma generation module of a surgical instrument disinfection and sterilization device and its usage method provided by an embodiment of the present invention;

[0034] Figure 4 is a schematic structural diagram of a vacuum extraction system of a surgical instrument disinfection and sterilization device and its usage method provided by an embodiment of the present invention;

[0035] Figure 5 is a schematic structural diagram of an ultrasonic atomization device of a surgical instrument disinfection and sterilization device and its usage method provided by an embodiment of the present invention;

[0036] Figure 6 is a schematic structural diagram of a second atomization nozzle of a surgical instrument disinfection and sterilization device and its usage method provided by an embodiment of the present invention;

[0037] Figure 7 is a schematic structural diagram of a vacuum pulse drying system of a surgical instrument disinfection and sterilization device and its usage method provided by an embodiment of the present invention;

[0038] Figure 8 is a schematic structural diagram of a drying air duct of a surgical instrument disinfection and sterilization device and its usage method provided by an embodiment of the present invention.

[0039] In the drawings, the list of components represented by each reference numeral is as follows:

[0040] 1. Sealed sterilization chamber; 2. Instrument fixing rack; 3. Waste liquid collection tray; 4. Maintenance box door; 5. Plasma generation module; 501. Plasma generator; 502. Argon-oxygen gas mixing ratio machine; 503. Argon compressed gas cylinder; 504. Oxygen compressed gas cylinder; 505. First delivery pipe; 506. First electromagnetic one-way valve; 6. Vacuum extraction system; 601. Vacuum pump main body; 602. Exhaust hood; 603. Second electromagnetic one-way valve; 7. Ultrasonic atomization device; 701. Hydrogen peroxide liquid tank; 702. Peracetic acid liquid tank; 703. Electric control three-way valve; 704. Second delivery pipe; 705. Third delivery pipe; 706. First atomization nozzle; 707. Second atomization nozzle; 708. Ultrasonic atomizer; 8. Central controller; 9. Vacuum pulse drying system; 901. Medical air compressor; 902. HEPA-ULPA filter; 903. Air electric heater; 904. Sterile gas storage tank; 905. Pulse solenoid valve; 906. Drying air duct; 10. Stainless steel equipment box; 11. Cooling fan; 12. Sealed door; 13. Observation window; 14. Air pressure sensor; 15. Temperature and humidity sensor; 16. Steam generator. Detailed implementation manners

[0041] The following combines the attached Figure 1-8 The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention. In the following paragraphs, the present invention is described more specifically by way of example with reference to the accompanying drawings. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0042] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0044] Such asFigure 1-2 As shown in the figure, the present invention provides a surgical instrument disinfection and sterilization device, including a sealed sterilization box body 1, an instrument fixing rack 2, a waste liquid collection tray 3, a plasma generation module 5, a vacuum extraction system 6, an ultrasonic atomization device 7, a central controller 8, a vacuum pulse drying system 9, a stainless steel equipment box 10, and a steam generator 16. The instrument fixing rack 2 and the waste liquid collection tray 3 are both placed inside the sealed sterilization box body 1. The sealed sterilization box body 1, the plasma generation module 5, the vacuum extraction system 6, the ultrasonic atomization device 7, the central controller 8, and the vacuum pulse drying system 9 are all installed inside the stainless steel equipment box 10. The stainless steel equipment box 10 is provided with a maintenance box door 4. The sealed sterilization box body 1 is provided with a sealing door 12. The sealing door 12 is provided with an observation window 13, a pressure sensor 14, and a temperature and humidity sensor 15. The steam generator 16 is connected to the sealed sterilization box body 1 through a steam pump. The plasma generation module 5, the vacuum extraction system 6, the ultrasonic atomization device 7, and the vacuum pulse drying system 9 are all connected to the sealed sterilization box body 1. The plasma generation module 5 can fill the sealed sterilization box body 1 with an argon-oxygen mixed plasma to generate atomic oxygen / hydroxyl radicals under a radio frequency field. The argon-oxygen mixed plasma generates atomic oxygen / hydroxyl radicals under a radio frequency field. The vacuum extraction system 6 can extract the air inside the sealed sterilization box body 1. The ultrasonic atomization device 7 can release sterilizing aerosol with a particle size ≤ 5μm. The vacuum pulse drying system 9 can discharge the air inside the sealed sterilization box body 1. The central controller 8 is signal-connected to the plasma generation module 5, the vacuum extraction system 6, the ultrasonic atomization device 7, the vacuum pulse drying system 9, the pressure sensor 14, and the temperature and humidity sensor 15.

[0045] As Figure 3 shown in the figure, the plasma generation module 5 includes a plasma generator 501, an argon-oxygen gas mixing ratio machine 502, an argon compressed gas cylinder 503, an oxygen compressed gas cylinder 504, a first delivery pipe 505, and a first electromagnetic one-way valve 506. The argon compressed gas cylinder 503 and the oxygen compressed gas cylinder 504 are connected to the argon-oxygen gas mixing ratio machine 502. The argon-oxygen gas mixing ratio machine 502 is connected to the plasma generator 501. The plasma generator 501 is connected to the first electromagnetic one-way valve 506 through the first delivery pipe 505. The first electromagnetic one-way valve 506 is connected to the sealed sterilization box body 1. The argon-oxygen gas mixing ratio machine 502 can mix and proportion the argon compressed gas cylinder 503 and the oxygen compressed gas cylinder 504. The proportioned gas is transmitted to the plasma generator 501, and the plasma generator 501 can apply a 13.56 MHz radio frequency field to the atomization area to generate reactive oxygen radicals.

[0046] As Figure 4As shown in the figure, the vacuum extraction system 6 includes a vacuum pump main body 601, an exhaust hood 602, and a second electromagnetic one-way valve 603. The vacuum pump main body 601 is connected to the exhaust hood 602 and the second electromagnetic one-way valve 603. The vacuum pump main body 601 can extract the air in the sealed sterilization box 1 to achieve a sealing effect. The second electromagnetic one-way valve 603 is connected to the sealed sterilization box 1. Another vacuum pump main body 601 is connected to a tube cavity instrument air extraction nozzle. The exhaust hood 602 is provided with a protective filter screen and is connected to the hospital exhaust pipeline.

[0047] As Figure 5-6 shown in the figure, the ultrasonic atomization device 7 includes a hydrogen peroxide liquid tank 701, a peracetic acid liquid tank 702, an electric control three-way valve 703, a second delivery pipe 704, a third delivery pipe 705, a first atomization nozzle 706, a second atomization nozzle 707, and an ultrasonic atomizer 708. The hydrogen peroxide liquid tank 701 and the peracetic acid liquid tank 702 are connected to the ultrasonic atomizer 708 through the electric control three-way valve 703. The output pipe of the ultrasonic atomizer 708 is connected to the second delivery pipe 704 and the third delivery pipe 705 through the electric control three-way valve 703. The second delivery pipe 704 is connected to the first atomization nozzle 706. The third delivery pipe 705 is connected to the second atomization nozzle 707. The ultrasonic atomizer 708 can atomize the hydrogen peroxide aerosol and discharge it into the sealed sterilization box 1 through the first atomization nozzle 706 for disinfection. The second atomization nozzle 707 can be connected to the tube cavity instrument, so that the hydrogen peroxide aerosol is atomized and transmitted into the tube cavity instrument for disinfection. The second atomization nozzle 707 is provided with a plurality of nozzle orifices, and the nozzle orifices are provided with a plurality of diameter models. One of the vacuum pump main bodies 601 is connected to an air extraction nozzle, and the air extraction nozzle is provided with a plurality of suction ports corresponding to the second atomization nozzle 707 with different diameter models, so as to be adapted to tube cavity instruments with different diameters.

[0048] As Figure 7-8 shown in the figure, the vacuum pulse drying system 9 includes a medical air compressor 901, a HEPA-ULPA filter 902, an air electric heater 903, a sterile gas storage tank 904, a pulse solenoid valve 905, and a drying air duct 906. The air inlet of the medical air compressor 901 is connected to the HEPA-ULPA filter 902. The air outlet end of the medical air compressor 901 is successively connected to the air electric heater 903, the sterile gas storage tank 904, the pulse solenoid valve 905, and the drying air duct 906. The air compressor 901 can press the sterile air into the 904 through the HEPA-ULPA filter 902 and the 903, so that the heated sterile air can be stored in the 904. Opening the 905 can introduce pulsed hot air to quickly dry the instruments. The drying air duct 906 penetrates into the sealed sterilization box 1, and the connection part is sealed. The drying air duct 906 is uniformly provided with a plurality of one-way drying nozzles.

[0049] The specific working principle and usage method of the present invention are as follows:

[0050] S1, loading medical devices, stably placing the medical devices in the device holder 2 of the sealed sterilization box 1, and closing the sealing door 12 for sealing;

[0051] S2, select the mode. The central controller 8 selects the sterilization mode based on the material, structural complexity and pollution level of the instrument. The thermosensitive instrument adopts mode A to generate 45-55°C plasma low-temperature sterilization through the plasma generation module 5. The tubular cavity instrument adopts mode B to perform ultrasonic atomization and vacuum pressure penetration sterilization through the vacuum extraction system 6 and the ultrasonic atomization device 7. The metal instrument adopts mode C to use the plasma generation module 5 and the steam generator 16 for high-temperature steam-assisted plasma sterilization. If a multi-modal sterilization cycle is required, select mode D;

[0052] S3, standard multimodal sterilization cycle mode, a. Pre-vacuum stage: the vacuum extraction system 6 reduces the cavity pressure of the closed sterilization box 1 to 0.5 kPa and maintains it for 5 minutes;

[0053] b. Sterilant injection, the ultrasonic atomization device 105 releases sterilizing aerosol with a particle size of ≤5 μm;

[0054] c. Plasma activation: the plasma generating module 5 applies a 13.56 MHz radio frequency field to the atomization area to generate active oxygen free radicals;

[0055] d. Pulse penetration, 3-5 times of 50kPa→5kPa pressure pulsation through vacuum extraction system 6;

[0056] S4, vacuum pulse drying, the vacuum extraction system 6 and the vacuum pulse drying system 9 alternately inject sterile hot air and vacuum at 60°C until the reading of the temperature and humidity sensor 15 is ≤3%.

[0057] Example 1: Low-temperature plasma sterilization of heat-sensitive instruments;

[0058] S1, loading medical devices, stably placing the medical devices in the device holder 2 of the sealed sterilization box 1, and closing the sealing door 12 for sealing;

[0059] S2, vacuum pretreatment, the vacuum extraction system 6 reduces the pressure of the sealed sterilization box 1 to 0.3 kPa, maintains it for 8 minutes, and eliminates air interference;

[0060] S3, sterilant penetration, 6% hydrogen peroxide aerosol with a particle size of 3.2 ± 0.5 μm in ultrasonic atomization device 7, forming a nano-liquid film on the surface of the device;

[0061] S4, plasma activation, the argon-oxygen mixed gas is ionized under the radio frequency field of 300W through the plasma generating module 5 to generate OH free radicals and atomic oxygen O + , lasting 15 minutes;

[0062] S5, Pulse strengthening and drying, implemented 5 times through the vacuum extraction system 6 and the vacuum pulse drying system 9 Pressure pulsation drives the penetration of active ingredients into micro-gaps. The vacuum pulse drying system 9 conducts pulse drying with 60°C sterile hot air to achieve a humidity ≤ 3%.

[0063] Example 2: Deep penetration sterilization of lumen instruments, applicable to laparoscopic channels, bone drills, and aspirator tips;

[0064] S1, Load medical devices. Stably place the medical devices in the device fixing rack 2 of the sealed sterilization box body 1, connect the lumen to the second atomizing nozzle 707 and the air extraction nozzle, and close the sealing door 12 for sealing;

[0065] S2, Multi-stage vacuum pumping. Through the vacuum extraction system 6, the cavity pressure is reduced to 0.5 kPa and maintained for 5 minutes to break the lumen air resistance;

[0066] S3, Directional injection of sterilizing agent. The ultrasonic atomization device 7 releases 2% peracetic acid aerosol with a particle size ≤ 5 μm, and simultaneously starts the gas guiding microtube to transport the plasma flow;

[0067] S4, Active free radical burst. The plasma generation module 5 releases a 13.56 MHz radio frequency field to excite the aerosol, generating O3 and ·OH free radicals with a concentration of 10 16 / cm 3 ;

[0068] S5, Vacuum pulsation penetration. Through the vacuum extraction system 6, 3 - 5 times of 50 kPa → 5 kPa pressure cycles are achieved, and the negative pressure sucks the active ingredients to the deep layer of the lumen;

[0069] S6, Pulse strengthening and drying, achieved 5 times through the vacuum extraction system 6 and the vacuum pulse drying system 9 Pressure pulsation drives the penetration of active ingredients into micro-gaps, and finally, pulse drying is conducted with 60°C sterile hot air through the vacuum pulse drying system 9, with a humidity ≤ 3%.

[0070] Example 3: High-temperature steam-assisted plasma sterilization of metal instruments;

[0071] S1, Load medical devices. Stably place the medical devices in the device fixing rack 2 of the sealed sterilization box body 1 and close the sealing door 12 for sealing;

[0072] S2, High-temperature steam pretreatment. Pump 132°C saturated steam from the steam generator 16 into the sealed sterilization box body 1 for 10 minutes to decompose biofilms and thermally stable pathogens;

[0073] S3, Vacuum pulsation dehumidification. Through the vacuum extraction system 6, 4 times of 100 kPa → 10 kPa pressure pulsations are conducted to discharge condensed water and residues;

[0074] S4, Pulse hot air drying, alternately injecting sterile hot air at 132°C and deeply evacuating to ≤3 kPa through the vacuum pulse drying system 9 and the vacuum extraction system 6, with a single cycle of 120 seconds and a total of 3 cycles.

[0075] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0076] As described above, it is only the preferred embodiment of the present invention, and there is no restriction in any form on the present invention; any ordinary technician in the industry can smoothly implement the present invention according to the illustrations in the specification and the above description; however, any equivalent changes such as slight modifications, decorations, and evolutions made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above are equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A surgical instrument disinfection and sterilization device, comprising an airtight sterilization box body (1), an instrument fixing rack (2), a waste liquid collection tray (3), a plasma generation module (5), a vacuum extraction system (6), an ultrasonic atomization device (7), a central controller (8), a vacuum pulse drying system (9), a stainless steel equipment box (10), and a steam generator (16), characterized in that: The instrument fixing rack (2) and the waste liquid collection tray (3) are both placed inside the airtight sterilization box body (1). The airtight sterilization box body (1), the plasma generation module (5), the vacuum extraction system (6), the ultrasonic atomization device (7), the central controller (8), and the vacuum pulse drying system (9) are all installed inside the stainless - steel equipment box (10). The stainless - steel equipment box (10) is provided with a maintenance box door (4). The airtight sterilization box body (1) is provided with a sealing door (12). The sealing door (12) is provided with an observation window (13), a pressure sensor (14), and a temperature and humidity sensor (15). The steam generator (16) is connected to the airtight sterilization box body (1) through a steam pump; The usage method includes the following steps: S1, Loading medical devices. Stablely place the medical devices inside the instrument fixing rack (2) of the airtight sterilization box body (1), and close the sealing door (12) for sealing; S2, Selecting a mode. The central controller (8) selects a sterilization mode based on the material, structural complexity, and pollution level of the instrument. For heat - sensitive instruments, mode A is adopted to generate 45 - 55 °C plasma low - temperature sterilization through the plasma generation module (5). For lumen instruments, mode B is adopted for ultrasonic atomization plus vacuum pressure penetration sterilization through the vacuum extraction system (6) and the ultrasonic atomization device (7). For metal instruments, mode C is adopted for high - temperature steam - assisted plasma sterilization using the plasma generation module (5) and the steam generator (16). If a multi - modal sterilization cycle is required, select mode D; S3, Standard multi - modal sterilization cycle mode. a. Pre - vacuum stage: The vacuum extraction system (6) reduces the pressure of the cavity of the airtight sterilization box body (1) to 0.5 kPa and maintains it for 5 min; b. Sterilant injection. The ultrasonic atomization device (105) releases sterilizing aerosol with a particle size ≤ 5 μm; c. Plasma activation. The plasma generation module (5) applies a 13.56 MHz radio - frequency field to the atomization area to generate reactive oxygen free radicals; d. Pulse penetration. Perform 3 - 5 times of 50 kPa → 5 kPa pressure pulsation through the vacuum extraction system (6); S4, Vacuum pulse drying. The vacuum extraction system (6) and the vacuum pulse drying system (9) alternately inject sterile hot air and evacuate at 60 °C until the reading of the temperature and humidity sensor (15) ≤ 3%; 2. The surgical instrument disinfection and sterilization device according to claim 1, characterized in that, The plasma generation module (5), the vacuum extraction system (6), the ultrasonic atomization device (7), and the vacuum pulse drying system (9) are all connected to the airtight sterilization box body (1).

3. The surgical instrument disinfection and sterilization device according to claim 1, characterized in that, The central controller (8) is signal - connected to the plasma generation module (5), the vacuum extraction system (6), the ultrasonic atomization device (7), the vacuum pulse drying system (9), the pressure sensor (14), and the temperature and humidity sensor (15).

4. The surgical instrument disinfection and sterilization device according to claim 1, wherein, The plasma generation module (5) includes a plasma generator (501), an argon-oxygen gas mixing ratio machine (502), an argon compressed gas cylinder (503), an oxygen compressed gas cylinder (504), a first delivery pipe (505), and a first electromagnetic one-way valve (506). The argon compressed gas cylinder (503) and the oxygen compressed gas cylinder (504) are connected to the argon-oxygen gas mixing ratio machine (502). The argon-oxygen gas mixing ratio machine (502) is connected to the plasma generator (501). The plasma generator (501) is connected to the first electromagnetic one-way valve (506) through the first delivery pipe (505). The first electromagnetic one-way valve (506) is connected to the airtight sterilization box body (1).

5. The surgical instrument disinfection and sterilization device according to claim 1, wherein The vacuum extraction system (6) includes a vacuum pump main body (601), an exhaust hood (602), and a second electromagnetic one-way valve (603). One vacuum pump main body (601) is connected to the exhaust hood (602) and the second electromagnetic one-way valve (603). The other vacuum pump main body (601) is connected to a lumen instrument air extraction nozzle.

6. The surgical instrument disinfection and sterilization device according to claim 5, wherein, The second electromagnetic one-way valve (603) is connected to the airtight sterilization box body (1). The exhaust hood (602) is provided with a protective filter screen and is connected to the hospital exhaust pipe.

7. The surgical instrument disinfection and sterilization device according to claim 1, characterized in that, The ultrasonic atomization device (7) includes a hydrogen peroxide liquid tank (701), a peracetic acid liquid tank (702), an electric control three-way valve (703), a second delivery pipe (704), a third delivery pipe (705), a first atomization nozzle (706), a second atomization nozzle (707), and an ultrasonic atomizer (708). The hydrogen peroxide liquid tank (701) and the peracetic acid liquid tank (702) are connected to the ultrasonic atomizer (708) through the electric control three-way valve (703). The output pipe of the ultrasonic atomizer (708) is connected to the second delivery pipe (704) and the third delivery pipe (705) through the electric control three-way valve (703). The second delivery pipe (704) is connected to the first atomization nozzle (706). The third delivery pipe (705) is connected to the second atomization nozzle (707).

8. The surgical instrument disinfection and sterilization device according to claim 7, characterized in that, The second atomization nozzle (707) is provided with a plurality of nozzle orifices, and the nozzle orifices are provided with a plurality of diameter models. One vacuum pump main body (601) is connected to an air extraction nozzle, and the air extraction nozzle is provided with a plurality of diameter models of suction ports corresponding to the second atomization nozzle (707).

9. The surgical instrument disinfection and sterilization device according to claim 1, wherein, The vacuum pulse drying system (9) includes a medical air compressor (901), a HEPA-ULPA filter (902), an air electric heater (903), a sterile gas storage tank (904), a pulse solenoid valve (905), and a drying air duct (906). The intake port of the medical air compressor (901) is connected to the HEPA-ULPA filter (902). The outlet end of the medical air compressor (901) is sequentially connected to the air electric heater (903), the sterile gas storage tank (904), the pulse solenoid valve (905), and the drying air duct (906).

10. The surgical instrument disinfection and sterilization device according to claim 1, wherein The drying air duct (906) penetrates into the sealed sterilization box body (1), and the connection part is sealed. The drying air duct (906) is evenly provided with a plurality of one-way drying nozzles.

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