Anti-pollution combined structure of blood sampling device

Abstract

The utility model relates to the field of medical instruments, in particular to an anti-pollution combined structure of a blood sampling device, which comprises a blood sampling component, a first disinfection component and a second disinfection component, by arranging the first disinfection assembly, the blood sampling device can be sealed, stored and disinfected, the blood sampling device can be prevented from being directly exposed to the outside, the possibility that the blood sampling device is polluted is reduced, by arranging the second disinfection assembly, alcohol can be automatically sprayed to the hand of a medical worker for sterilization and disinfection before blood sampling every time, and the blood sampling efficiency is improved. Manual operation of medical staff can be reduced, disinfection efficiency is improved, blood sampling efficiency is further improved, bacteria can be prevented from entering the blood sampling assembly from the opening in the process of storing the blood sampling assembly by arranging an anti-pollution film at the outer end of the second protective cover of the blood sampling assembly, and therefore it is guaranteed that a guide needle and a blood sampling test tube can be connected in a sterile mode; and the possibility that blood is polluted is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument field especially relates to blood sampling device anti -pollution combination structure. BACKGROUND

[0002] Blood sampling device is a kind of medical instrument for obtaining blood sample from human body, mainly by blood sampling needle, blood sampling tube and possible blood sampling chamber or other auxiliary components, blood sampling device anti -pollution combination structure is mainly used to prevent blood sample from being contaminated externally during blood sampling, simultaneously avoid cross infection and the occurrence of blood clotting phenomenon, ensure the purity and effectiveness of the blood sample collected.

[0003] The existing blood sampling device usually needs medical staff to manually spray alcohol to disinfect hands before each blood sampling, not only operation is more cumbersome, and each time taking alcohol bottle is easy to contaminate bacteria on the surface of alcohol bottle, and blood sampling device is usually directly placed in open storage basket, long-term exposure to external air is easy to cause the surface of blood sampling device to be contaminated, although there is strict operation specification, still there is certain pollution risk, and the anti -pollution effect is poor.

[0004] Therefore, in view to the above-mentioned existing blood sampling device usually manual operation more leads to blood sampling efficiency low and the problem of poor anti -pollution effect, a blood sampling device anti -pollution combination structure with sealing preservation and disinfection to blood sampling device and automatic disinfection to medical staff hand can be designed, blood sampling device can be avoided to be directly exposed to external environment, the possibility of blood sampling device being contaminated is reduced, and the hand of medical staff is automatically sprayed with alcohol for sterilization and disinfection before each blood sampling through automatic disinfection structure, manual operation of medical staff can be reduced, disinfection efficiency is improved, and then blood sampling efficiency is improved. UTILITY MODEL CONTENTS

[0005] In order to overcome the problem that the existing blood sampling device usually manual operation more leads to blood sampling efficiency low and the poor anti -pollution effect.

[0006] The utility model discloses a technical scheme for: blood sampling device anti -pollution combination structure, including blood sampling subassembly, first sterilization subassembly and second sterilization subassembly, the inside of first sterilization subassembly is placed with a plurality of groups of blood sampling subassembly for blood sampling, first sterilization subassembly is used to seal and preserve and sterilization disinfection to blood sampling subassembly, the right -hand member of first sterilization subassembly is fixedly installed with the second sterilization subassembly for the hand disinfection sterilization processing of medical staff, blood sampling subassembly includes blood sampling tube, blood sampling needle head, guide needle head, first protective cover, second protective cover and anti -pollution film, and the left and right two ends of blood sampling tube are fixedly connected with blood sampling needle head and guide needle head respectively, the outside of blood sampling needle head is equipped with the first protective cover for preventing pollution, the outside of guide needle head is equipped with the second protective cover for preventing pollution, and the end fixedly connected with the second protective cover away from guide needle head is equipped with the anti -pollution film for preventing the pollution material from entering, and the surface middle part of anti -pollution film is equipped with the guide dendritic line for conveniently puncturing anti -pollution film.

[0007] As preferred, the first sterilization component includes a first box body, a box door, a placement rack, and an ultraviolet sterilization lamp. The inner side middle part of the first box body is fixedly installed with the placement rack for placing the blood sampling component. The surface of the placement rack is evenly provided with through grooves from front to back for sterilization and disinfection of the blood sampling component.

[0008] As preferred, the inner side top and bottom of the first box body are both symmetrically fixedly installed with two groups of ultraviolet sterilization lamps for sterilization and disinfection. The front end of the first box body is provided with the box door for opening and closing.

[0009] As preferred, the second sterilization component includes a second box body, a liquid storage tank, a liquid inlet pipe, a hydraulic controller, a connecting pipe, a spray head, an electromagnetic valve, an infrared sensor, a PLC controller, a waste liquid tank, and a magnetic strip. The upper end of the second box body is fixedly installed with the liquid storage tank for storing disinfectant. The upper end right part of the liquid storage tank is fixedly installed with the liquid inlet pipe for guiding the disinfectant. The upper end of the liquid inlet pipe is provided with a sealing cover for opening and closing.

[0010] As preferred, the upper end middle part of the liquid storage tank is fixedly installed with the hydraulic controller for controlling the hydraulic size. The lower end of the liquid storage tank is symmetrically fixedly connected with two groups of connecting pipes. The connecting pipes extend through the upper end of the second box body to the inside fixedly connected with the spray head for spraying disinfectant.

[0011] As preferred, the outer side of the connecting pipe is provided with the electromagnetic valve for controlling the disinfectant in and out. The inner side top of the second box body is symmetrically fixedly installed with two groups of infrared sensors for sensing the hand in and out of the medical staff. The front end of the liquid storage tank is fixedly installed with the PLC controller for controlling the hydraulic controller, the electromagnetic valve, and the infrared sensor. The inside of the hydraulic controller, the electromagnetic valve, and the infrared sensor is provided with the connection module for connecting with the PLC controller.

[0012] Preferably, the inner bottom of the second box body is provided with a waste liquid tank for collecting the disinfecting liquid, and the lower end of the waste liquid tank is fixedly connected with two groups of magnetic strips in left-right symmetry.

[0013] The blood sampling device of the present application has the following beneficial effects:

[0014] 1. The first disinfection assembly can seal and disinfect the blood sampling device, avoid exposing the blood sampling device to the outside world, reduce the possibility of the blood sampling device being contaminated, and the second disinfection assembly can automatically spray alcohol on the hands of medical staff before each blood sampling to reduce manual operation of the medical staff, improve disinfection efficiency, and further improve blood sampling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The blood sampling device anti-pollution combined structure is shown in the overall three-dimensional structure schematic view.

[0016] Figure 2 The blood sampling device anti-pollution combined structure is shown in the overall three-dimensional structure schematic view.

[0017] Figure 3 The blood sampling device anti-pollution combined structure is shown in the overall three-dimensional structure schematic view.

[0018] Figure 4 The blood sampling device anti-pollution combined structure is shown in the overall three-dimensional structure schematic view.

[0019] Figure 5 The blood sampling device anti-pollution combined structure is shown in the overall three-dimensional structure schematic view.

[0020] BRIEF DESCRIPTION OF DRAWINGS: 101, blood sampling tube; 102, blood sampling needle; 103, guide needle; 104, first protective cover; 105, second protective cover; 106, anti-pollution film; 201, first box body; 202, box door; 203, placing rack; 204, ultraviolet sterilization lamp; 301, second box body; 302, liquid storage tank; 303, liquid inlet pipe; 304, hydraulic controller; 305, connecting pipe; 306, spray head; 307, electromagnetic valve; 308, infrared sensor; 309, PLC controller; 310, waste liquid tank; 311, magnetic strip. DETAILED DESCRIPTION

[0021] The utility model is further explained below in combination with the drawings and examples.

[0022] The blood collection device is mainly used for collecting blood samples from the human body, which plays a key role in many fields such as medical treatment and testing. The blood collection device is composed of a blood collection needle, a blood collection tube and possibly a blood collection chamber or other auxiliary components. The following is a detailed introduction to the blood collection device:

[0023] Blood collection needle:

[0024] The blood collection needle is the core part of the blood collection device, usually made of durable materials such as stainless steel or titanium alloy. It comes in different sizes and lengths to accommodate the collection of different blood samples, such as whole blood and plasma. The design of the blood collection needle is usually very sharp to ensure that it can easily pierce the skin and collect blood.

[0025] Blood collection tube:

[0026] The blood collection tube is a container for storing collected blood samples, which can be made of glass or plastic. The color of the blood collection tube usually represents different types of blood collection tubes, such as red for whole blood samples and purple for plasma samples. The blood collection tube needs to be tightly connected to the blood collection needle to ensure that the blood can flow smoothly into the tube.

[0027] Blood collection chamber:

[0028] The blood collection chamber is a closed space that prevents the blood collection needle and blood collection tube from being contaminated by external factors during the blood collection process. It is usually connected to the blood collection device body and automatically activated during blood collection to ensure the sterility of the blood collection process.

[0029] Other auxiliary components:

[0030] With the development of technology, the blood collection device may also include other auxiliary components such as rubber plugs, protective sleeves, negative pressure devices, etc. to further improve the safety and convenience of blood collection. For example, some advanced blood collection systems may use microneedle array technology and negative pressure suction technology to reduce patient pain and improve blood collection efficiency.

[0031] Technical development and innovation:

[0032] In recent years, the technology of blood collection devices has been continuously innovated, and many new types of blood collection equipment and technology have emerged.

[0033] The blood collection device anti-pollution combination structure is an important technology in the field of medical devices, aiming to ensure the safety and sterility of the blood collection process. Its core lies in reducing or eliminating the risk of blood contamination during the blood collection process through a series of designs and innovations.

[0034] The blood collection device anti-pollution combination structure mainly has the following important functions:

[0035] Protecting patient safety

[0036] Preventing infection: During blood collection, if external bacteria, viruses and other pathogens enter the blood collection device and enter the patient's body with the blood, it can cause serious infection. For example, bacterial contamination may cause sepsis, and viral contamination may spread blood-borne diseases such as hepatitis B, hepatitis C and AIDS. The anti-pollution combination structure prevents pathogens from entering the blood collection device and contacting the blood through sealing and protective measures, reducing the risk of patient nosocomial infection.

[0037] Avoiding allergic reactions: Preventing external allergens (such as pollen, dust, etc.) from entering the blood collection device and contacting the blood, if the allergens enter the blood, it may cause allergic reactions in patients, from mild skin rash, itching to severe anaphylactic shock. The sealing components and protective layers in the combination structure can effectively reduce this risk.

[0038] Ensuring sample quality

[0039] Maintaining sample purity: The purity of blood samples is crucial for accurate test results. The anti-pollution structure can prevent external substances (such as dust, impurities, etc.) from mixing into the blood sample. For example, during blood biochemical testing, if the sample is contaminated with impurities, it may interfere with the reaction between the test reagent and the blood components, causing the test results to deviate, affecting the doctor's correct judgment of the patient's condition.

[0040] Ensuring sample composition stability: Avoiding excessive exchange of blood and air oxygen, carbon dioxide and other gases, for some test items such as blood gas analysis, accurate blood gas composition is required. If the blood collection device cannot effectively prevent gas exchange, it will change the oxygen and carbon dioxide content in the blood, making the test results meaningless. At the same time, prevent abnormal blood clotting, such as preventing the failure of anticoagulants or the entry of external coagulation substances, to ensure that blood samples are tested in the right state.

[0041] Protecting medical staff safety

[0042] Reducing occupational exposure risk: Anti-pollution combination structure of blood collection device, such as self-destructive puncture needle, can prevent medical staff from being accidentally contaminated by contaminated needle after blood collection. Needle puncture by blood containing pathogens is one of the important ways for medical staff to be infected with blood-borne diseases. Through this protective structure, the occupational exposure risk of medical staff can be greatly reduced, protecting the health of medical staff.

[0043] Preventing cross-contamination: In a hospital or other medical environment, medical staff may need to collect blood for multiple patients. Anti-pollution combination structure can prevent blood samples from different patients from being contaminated with each other, and can also prevent the blood of the previous patient from contaminating the blood collection device of the next patient, reducing the occurrence of cross-infection and ensuring the safety and standardization of medical operations.

[0044] It is essential for blood collection devices to have anti-pollution structures to protect patients from infection and allergy, ensure the quality of blood samples to obtain accurate test results, and protect medical staff from cross-contamination. However, there are often some problems with the anti-pollution structure of blood collection devices in actual use. Some common problems and their causes are listed below: 1. Hemolysis problem: Hemolysis may occur during blood collection, which means red blood cells are broken. Cause: The negative pressure of the vacuum tube is relatively large, and the blood flows into the tube bottom too fast at the beginning of blood collection, causing red blood cells to collide and break. 2. Blood leakage problem: Blood may leak from the blood collection device during blood collection. Cause: The latex sheath at the end of the two-way blood collection needle is loose or the needle pierces the latex sheath, causing the two-way blood collection needle to be not tightly sealed, and blood to leak along the two-way blood collection needle during venipuncture. 3. Blood flow problem: Blood does not flow smoothly into the blood collection tube during blood collection. Cause: The puncture needle may be attached to the blood vessel wall, or there is no negative pressure in the blood collection tube, causing blood to flow into the blood collection tube. 4. Insufficient blood collection problem: The amount of blood collected does not meet the expected requirements. Cause: The negative pressure in the blood collection tube is not enough to suck enough blood into the blood collection tube. 5. Test tube contamination problem: The blood collection test tube is contaminated during collection or storage. Cause: This may include improper operation (such as not fully disinfecting the blood collection site, touching the inner wall of the test tube, etc.), test tube material problems (such as low-quality test tubes releasing chemicals to interfere with blood samples), environmental factors (such as poor laboratory internal environmental hygiene, poor air quality, etc.), improper test tube storage (such as storing in a humid or inappropriate temperature environment to cause microbial growth), and cross-contamination (such as cross-contamination between different samples when using the same tool or equipment).

[0045] There are various types of blood collection device anti-pollution combination structures on the market, which aim to prevent external pollutants from entering the blood collection device through sealing, protection, self-destruction and other ways to protect the quality of blood samples, patient safety and medical staff safety. For example: 1. Conventional blood collector and vacuum blood collection system: Conventional blood collector is usually composed of blood needle, blood collection tube and possible needle holder, vacuum blood collection system further utilizes vacuum negative pressure principle, after blood needle is inserted into vein, negative pressure in vacuum blood collection tube safely and efficiently absorbs and saves blood. Problem: Although these systems are designed to reduce pollution, in actual operation, such as improper insertion of blood needle, improper sealing of blood collection tube or improper operation, blood pollution or leakage may still occur, in addition, blood collection tubes with different additives need to be matched with corresponding detection items, improper use may affect detection results. 2. Automatic blood collector: Automatic blood collector is an electronic blood collection device that can automatically control the blood collection process according to preset parameters, including blood needle insertion, blood collection and blood collection tube sealing steps, this device is usually used for large-scale blood sampling to improve efficiency and accuracy. Problem: Although automatic blood collector improves blood collection efficiency, its complex mechanical and electronic structure also increases the cost of failure and maintenance, at the same time, improper operation or equipment failure may still cause blood pollution or inaccurate collection. 3. Anticoagulant blood collector: Based on conventional blood collector, anticoagulant is added to prevent blood coagulation after blood sample collection, this blood collector is suitable for blood samples that need to be stored for a long time or for special detection items. Problem: The use of anticoagulant may interfere with the accuracy of certain detection items, especially when anticoagulant interacts with detection reagent, in addition, the cost of anticoagulant blood collector is usually higher than that of conventional blood collector. 4. Disposable vacuum blood collection tube: This blood collection tube is usually used with vacuum blood collection system, blood is sucked into the tube by negative pressure and immediately sealed to prevent pollution, disposable design ensures the hygiene and safety of each blood collection. Problem: Although disposable use reduces the risk of cross contamination, it increases the cost of medical waste generation and disposal, at the same time, different brands and specifications of blood collection tubes may have compatibility problems, which need to be carefully checked by medical staff before use.

[0046] There are various types of blood collection device anti-pollution combination structures on the market, each type has its unique working principle and application scenario, however, no matter which type, attention should be paid to operation specification, equipment maintenance and reagent selection, etc. to ensure the accuracy and safety of blood collection process.

[0047] Please refer to Figure 1The utility model provides a kind of embodiment: blood sampling device anti-pollution combination structure, including blood sampling component, first sterilization component and second sterilization component, the inside of first sterilization component is placed with multiple groups of blood sampling component for carrying out blood sampling, first sterilization component is used to seal and preserve and sterilize and disinfect blood sampling component, the right end of first sterilization component is fixedly installed with second sterilization component for medical staff hand disinfection and sterilization processing.

[0048] Please refer to Figures 2-3 In the embodiment, blood sampling component includes blood sampling tube 101, blood sampling needle head 102, guide needle head 103, first protective cover 104, second protective cover 105 and anti-pollution film 106, the left and right ends of blood sampling tube 101 are fixedly connected with blood sampling needle head 102 and guide needle head 103 respectively, the outside of blood sampling needle head 102 is sleeved with first protective cover 104 for preventing pollution, the outside of guide needle head 103 is sleeved with second protective cover 105 for preventing pollution, one end of second protective cover 105 away from guide needle head 103 is fixedly connected with anti-pollution film 106 for preventing pollutants from entering, sterile connection is carried out between second protective cover 105 and blood sampling test tube, guide dendritic line is arranged on the surface of anti-pollution film 106, which is convenient for puncturing anti-pollution film 106.

[0049] Please refer to Figure 4 In the embodiment, first sterilization component includes first box body 201, box door 202, placing rack 203, ultraviolet germicidal lamp 204, placing rack 203 for placing blood sampling component is fixedly installed on the inside middle part of first box body 201, through groove is evenly arranged on the surface of placing rack 203 from front to back, which is convenient for sterilizing and disinfecting blood sampling component, two groups of ultraviolet germicidal lamp 204 for sterilizing and disinfecting are fixedly installed on the inside top and bottom of first box body 201 and symmetrical left and right, box door 202 for opening and closing is arranged on the front end of first box body 201.

[0050] Please refer to Figure 5In the embodiment, the second disinfection assembly comprises a second box body 301, a liquid storage tank 302, a liquid inlet pipe 303, a hydraulic controller 304, a connecting pipe 305, a spray head 306, a solenoid valve 307, an infrared sensor 308, a PLC controller 309, a waste liquid tank 310 and a magnetic strip 311, the upper end of the second box body 301 is fixedly provided with the liquid storage tank 302 for storing disinfectant, the upper end of the right part of the liquid storage tank 302 is fixedly provided with the liquid inlet pipe 303 for guiding the disinfectant, the upper end of the liquid inlet pipe 303 is provided with a sealing cover for opening and closing, the upper end of the middle part of the liquid storage tank 302 is fixedly provided with the hydraulic controller 304 for controlling the hydraulic pressure, the lower end of the liquid storage tank 302 is fixedly connected with two groups of connecting pipes 305 which are symmetrically arranged left and right, the connecting pipes 305 extend to the inner side through the upper end of the second box body 301 and are fixedly connected with the spray head 306 for spraying disinfectant, the outer side of the connecting pipe 305 is provided with the solenoid valve 307 for controlling the entry and exit of disinfectant, the inner side of the top of the second box body 301 is fixedly provided with two groups of infrared sensors 308 which are symmetrically arranged left and right for sensing the entry and exit of the hands of medical staff, the front end of the liquid storage tank 302 is fixedly provided with the PLC controller 309 for controlling the hydraulic controller 304, the solenoid valve 307 and the infrared sensor 308, the hydraulic controller 304, the solenoid valve 307 and the infrared sensor 308 are all provided with a connecting module for being connected with the PLC controller 309, the inner side of the bottom of the second box body 301 is provided with the waste liquid tank 310 for collecting disinfectant, the lower end of the waste liquid tank 310 is fixedly connected with two groups of magnetic strips 311 which are symmetrically arranged left and right, and the bottom of the waste liquid tank 310 is provided with a magnetic groove which is matched with the magnetic strip 311.

[0051] When working, first, the blood sampling assembly is placed on the placing rack 203 of the first disinfection assembly, the box door 202 is closed, the surface of the blood sampling assembly is irradiated and disinfected by the ultraviolet sterilization lamp 204, the sealing cover of the liquid inlet pipe 303 is opened, disinfectant is guided into the liquid storage tank 302 for storage, and then the sealing cover is closed again.

[0052] Then, corresponding parameters are set by the PLC controller 309, before blood sampling, the medical staff puts his hands into the second box body 301, the infrared sensor 308 senses the entry of the hands, automatically triggers the solenoid valve 307 to open, and adjusts the hydraulic pressure to an appropriate size by the hydraulic controller 304, so as to spray disinfectant on the hands of the medical staff to disinfect.

[0053] After that, the medical staff opens the box door 202, takes out the blood sampling assembly, opens the first protective cover 104, uses the blood sampling needle head 102 to sample blood from the corresponding part of the patient, and uses the end of the blood sampling test tube to break the anti-pollution film 106 and connect with the guide needle head 103, the blood flows into the blood sampling tube 101 from the blood sampling needle head 102, flows from the blood sampling tube 101 to the guide needle head 103, and finally flows into the blood sampling test tube.

[0054] Finally, the test tube with the collected blood is removed, and the above steps are repeated for different patients.

[0055] Through the above steps, by setting the first disinfection assembly, the blood collection device can be sealed, stored and disinfected, which can avoid direct exposure of the blood collection device to the outside world and reduce the possibility of contamination of the blood collection device. By setting the second disinfection assembly, the hands of medical staff can be automatically sprayed with alcohol for sterilization and disinfection before each blood collection, which can reduce manual operation of the medical staff, improve disinfection efficiency, and thus improve blood collection efficiency. By setting the anti-pollution film 106 on the outer end of the second protective cover 105 of the blood collection assembly, bacteria can be prevented from entering from the opening during storage of the blood collection assembly, thereby ensuring that the guide needle 103 and the blood collection test tube can be connected aseptically and reducing the possibility of blood contamination. To solve the problem that the existing blood collection device usually needs medical staff to manually spray alcohol on their hands for disinfection before each blood collection, which is not only more cumbersome, but also easy to contaminate bacteria on the surface of the alcohol bottle when taking the alcohol bottle each time, and the blood collection device is usually directly placed in an open storage basket, which is easily contaminated on the surface of the blood collection device due to long-term exposure to the outside air. Despite strict operating procedures, there is still a certain risk of contamination, and the anti-pollution effect is poor.

Claims

1. A pollution-preventing combination structure of a blood sampling device, comprising a blood sampling assembly; characterized in that: The first disinfection assembly is internally provided with a plurality of blood sampling assemblies for blood sampling, and is used for sealed storage and sterilization of the blood sampling assemblies; a second disinfection assembly for disinfecting and sterilizing the hands of medical staff is fixedly installed at the right end of the first disinfection assembly; the blood sampling assembly comprises a blood sampling tube (101), a blood sampling needle head (102), a guide needle head (103), a first protective cover (104), a second protective cover (105) and a pollution prevention film (106); the left and right ends of the blood sampling tube (101) are fixedly connected with the blood sampling needle head (102) and the guide needle head (103) respectively; the outer side of the blood sampling needle head (102) is sleeved with the first protective cover (104) for preventing pollution; the outer side of the guide needle head (103) is sleeved with the second protective cover (105) for preventing pollution; one end of the second protective cover (105) away from the guide needle head (103) is fixedly connected with the pollution prevention film (106) for preventing pollutants from entering; the second protective cover (105) is aseptically connected with the blood sampling tube; a guide dendritic line is arranged on the surface of the pollution prevention film (106) to facilitate puncturing the pollution prevention film (106).

2. The anti-pollution combined structure of the blood sampling device according to claim 1, characterized in that: The first disinfection assembly comprises a first box body (201), a box door (202), a placing rack (203) and ultraviolet sterilization lamps (204); the inner side of the first box body (201) is fixedly installed with the placing rack (203) for placing the blood sampling assemblies; the surface of the placing rack (203) is provided with through grooves from front to back for sterilizing and disinfecting the blood sampling assemblies.

3. The anti-pollution combined structure of the blood sampling device according to claim 2, characterized in that: The inner side of the first box body (201) is fixedly installed with two groups of ultraviolet sterilization lamps (204) on the top and the bottom in a left-right symmetrical manner; the front end of the first box body (201) is provided with the box door (202) for opening and closing.

4. The anti-pollution combination structure of the blood sampling device according to claim 1, characterized in that: The second disinfection assembly comprises a second box body (301), a liquid storage tank (302), a liquid inlet pipe (303), a hydraulic controller (304), a connecting pipe (305), a spray head (306), an electromagnetic valve (307), an infrared sensor (308), a PLC controller (309), a waste liquid tank (310) and a magnetic strip (311); the upper end of the second box body (301) is fixedly installed with the liquid storage tank (302) for storing disinfectant; the upper end of the right part of the liquid storage tank (302) is fixedly installed with the liquid inlet pipe (303) for introducing disinfectant; the upper end of the liquid inlet pipe (303) is provided with a sealing cover for opening and closing.

5. The anti-pollution combined structure of the blood sampling device according to claim 4, characterized in that: The upper end of the liquid storage tank (302) is fixedly installed with the hydraulic controller (304) for controlling the size of the liquid pressure; the lower end of the liquid storage tank (302) is fixedly connected with two groups of connecting pipes (305) in a left-right symmetrical manner; the connecting pipes (305) extend to the inner side of the second box body (301) and are fixedly connected with the spray heads (306) for spraying disinfectant.

6. The anti-pollution combination structure of the blood sampling device according to claim 4, characterized in that: The outer side of the connecting pipe (305) is provided with an electromagnetic valve (307) for controlling the entry and exit of disinfectant. The inner side of the second box body (301) is fixedly installed with two groups of infrared sensors (308) for sensing the entry and exit of the hands of medical staff on the top, and the front end of the liquid storage tank (302) is fixedly installed with a PLC controller (309) for controlling the hydraulic controller (304), the electromagnetic valve (307) and the infrared sensor (308). The hydraulic controller (304), the electromagnetic valve (307) and the infrared sensor (308) are all provided with a connection module for connecting with the PLC controller (309).

7. The anti-pollution combination structure of the blood sampling device according to claim 4, characterized in that: The inner side of the second box body (301) is provided with a waste liquid tank (310) for collecting disinfectant. The lower end of the waste liquid tank (310) is fixedly connected with two groups of magnetic strips (311) in a left-right symmetrical manner, and the bottom of the waste liquid tank (310) is provided with a magnetic groove matched with the magnetic strips (311).

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