Blood collection apparatus with automatic disinfection function

Abstract

The application discloses blood collection instrument with automatic disinfection function, blood collection method and blood collector, and belongs to the technical field of blood collection instrument. The blood collection instrument with automatic disinfection function comprises a disinfection device, a needle hole and a needle, the needle is in sliding connection in the needle hole, the disinfection device is arranged outside the needle hole, and the disinfection device automatically disinfects and stops bleeding for the needle and a user's wound when the needle projects out of the needle hole.

Description

Technical Field

[0001] This invention relates to the field of medical technology, and in particular to a blood collection instrument with an automatic disinfection function. Background Technology

[0002] The vacuum blood collection device consists of three parts: a vacuum blood collection tube, a pre-puncture needle, and a needle holder. The vacuum blood collection tube is the main component and is primarily used for the collection and preservation of blood samples. During the manufacturing process, a certain amount of negative pressure is pre-set in the vacuum blood collection tube. After the pre-puncture needle enters the blood vessel, the blood automatically flows into the tube due to the negative pressure.

[0003] Chinese invention patent CN112155573A discloses a disposable blood collection tube with a built-in blood collection needle, including a blood collection tube and a blood collection mechanism disposed inside the blood collection tube. The blood collection mechanism includes an outer tube disposed inside the blood collection tube, and a connecting slider adapted to the size of a through groove is fixed at the top edge of the outer tube. The connecting slider and the tube cap are fitted together through the through groove. A convex cap is integrally formed and fixed at the top of the connecting slider. An inner sleeve is disposed inside the outer tube, and a blood collection needle is fixed inside the inner sleeve. This invention fixes the blood collection needle inside the blood collection tube. By moving the convex cap, the outer tube, inner sleeve and blood collection needle connected to the convex cap can be taken out for blood collection. This effectively solves the problem of existing blood collection tubes and blood collection needles being placed separately, which makes it easy to mix up the used blood collection needles and reuse the blood collection needles, causing cross-infection to the blood collection recipient.

[0004] However, when using this blood collection tube, since the blood collection needle is placed inside the tube, it needs to be removed by hand and installed on the tube. When holding the blood collection needle, bacteria from the hands may be transferred to the needle. If bacteria enter human tissue during blood collection, it may cause infection, posing certain risks during use.

[0005] Therefore, it is necessary to provide a blood collection instrument, blood collection method, and blood collection device with automatic disinfection function to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a blood collection instrument with an automatic disinfection function, so as to solve the problem in the above-mentioned background art that the blood collection instrument requires manual removal of the blood collection needle and installation on the blood collection tube.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a blood collection instrument with automatic disinfection function, including a disinfection device, a needle hole and a needle, wherein the needle is slidably connected in the needle hole, the disinfection device is disposed on the outside of the needle hole, and when the needle protrudes from the needle hole, the disinfection device automatically disinfects and stops bleeding for the needle and the user's wound.

[0008] Preferably, the disinfection device includes a cotton ring, a vertical groove, a connecting block, a plug, and a liquid storage tank. The vertical groove is provided on both sides of the needle hole, and the connecting block is provided on both sides of the needle, which slides in the vertical groove. The liquid storage tank is provided on the upper side of the vertical groove, and the liquid storage tank contains disinfectant alcohol. The plug is provided on the upper side of the connecting block, which cooperates with the liquid storage tank. The cotton ring is sleeved on the outside of the needle hole and cooperates with the connecting block. When the needle is inserted downward, the connecting block moves the plug downward, and the disinfectant alcohol flows from the liquid storage tank into the cotton ring. After blood collection, the cotton ring is removed and the wound is pressed to facilitate disinfection and hemostasis. At the same time, the inside of the cotton ring is used to wipe the needle to disinfect it.

[0009] A blood collection device includes a vacuum blood collection tube. A needle hole is provided at the bottom end of the vacuum blood collection tube. A slide block is slidably installed inside the vacuum blood collection tube. A needle is fixedly installed at the bottom end of the slide block and slidably installed within the needle hole. A push rod is fixedly installed at the top end of the slide block, and the top end of the push rod penetrates the top wall of the vacuum blood collection tube. An air extraction cylinder is provided on the side wall of the vacuum blood collection tube. The slide block is hollow, and its inner cavity communicates with the inner cavity of the needle. A control component is provided inside the vacuum blood collection tube for controlling the communication between the needle and the vacuum blood collection tube.

[0010] Preferably, the control component includes a first diaphragm, a through hole at the top of the slide block, the first diaphragm being fixedly installed in the through hole, a cavity inside the push rod, a connecting rod inside the cavity, a sealing plug being rotatably installed at the bottom of the connecting rod, the outer wall of the sealing plug being in contact with the inner wall of the cavity, a first ejector pin being fixedly installed at the bottom of the sealing plug, the first ejector pin being located above the first diaphragm, a first connecting hole at the bottom of the outer wall of the push rod, and the bottom of the inner cavity of the push rod communicating with the inner cavity of the vacuum blood collection tube through the first connecting hole.

[0011] Preferably, a pressure plate is fixedly installed at the top of the push rod, a threaded post is fixedly installed at the top of the connecting rod, a threaded hole is opened on the pressure plate, the threaded post is threadedly installed in the threaded hole, and a knob is fixedly installed at the top of the threaded post.

[0012] Preferably, a sealing gasket is fixedly installed at the bottom end of the pressure plate, a fixing ring is fixedly installed at the top end of the vacuum blood collection tube, a flexible sealing sleeve is provided between the slide and the bottom inner wall of the vacuum blood collection tube, the top end of the flexible sealing sleeve is fixedly connected to the bottom wall of the slide, the bottom end of the flexible sealing sleeve is fixedly connected to the bottom inner wall of the vacuum blood collection tube, and the needle is disposed inside the flexible sealing sleeve.

[0013] Preferably, the front wall of the box body has a groove, a support column is fixedly installed in the groove, a support ring is fixedly installed on the support column, the blood collection device is slidably installed in the support ring, a limiting groove is opened on the inner wall of the support ring, an air suction nozzle adapted to the air suction cylinder is provided in the limiting groove, a guide groove is provided at the top of the limiting groove, and the air suction nozzle is connected to the output end of the vacuum pump through an air supply pipe.

[0014] Preferably, a cylinder is fixedly installed at the top of the box body, the output end of the cylinder penetrates through the top wall of the box body, and a push plate is fixedly installed at the bottom of the cylinder.

[0015] The method for collecting blood using the aforementioned blood collection device includes the following steps:

[0016] S1. Push the slide block towards the needle hole by the push rod. When the slide block moves, it pushes the needle to move so that the needle can pass through the needle hole. The vacuum blood collection tube is evacuated by the vacuum pump.

[0017] S2. Insert the needle into the blood vessel of the person to be blooded, and control the needle to connect with the vacuum blood collection tube through the control component, so that the blood in the blood vessel is drawn into the vacuum blood collection tube through the needle.

[0018] S3. Pull the push rod upward to retract the needle into the vacuum blood collection tube. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the blood collection instrument of the present invention;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the blood collection instrument of the present invention from another perspective;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the support ring of the present invention;

[0023] Figure 4 This is a schematic diagram of the blood collection device according to the first embodiment of the present invention;

[0024] Figure 5 This is the present invention. Figure 4 A magnified structural diagram at point A;

[0025] Figure 6 This is the present invention. Figure 4 A magnified structural diagram at point B;

[0026] Figure 7 This is the present invention. Figure 4 A magnified structural diagram at point C;

[0027] Figure 8 This is the present invention. Figure 4 A magnified structural diagram at point D;

[0028] Figure 9 This is a three-dimensional structural diagram of the slide block, slider, and needle of the present invention;

[0029] Figure 10 This is a schematic diagram of the blood collection device according to the second embodiment of the present invention;

[0030] Figure 11 This is the present invention. Figure 10 A magnified structural diagram at point E;

[0031] Figure 12 This is a schematic diagram of the main structure of the disinfection device of the present invention;

[0032] Figure 13 This is the present invention. Figure 12 Enlarged cross-sectional view of the structure at point F;

[0033] Figure 14 This is the present invention. Figure 13 A magnified structural diagram at point G.

[0034] In the diagram: 1. Box body; 2. Vacuum pump; 3. Support column; 4. Support ring; 401. Limiting groove; 402. Guide groove; 5. Gas supply pipe; 6. Suction nozzle; 7. Cylinder; 8. Push plate; 9. Blood collection device; 901. Vacuum blood collection tube; 9011. Slide groove; 902. Needle hole; 903. Slide seat; 9031. Second connecting hole; 904. Sliding block; 905. Needle; 906. Push rod; 9061. First connecting hole; 907. Connecting rod; 908. First ejector pin; 909. Screw 910. Knob; 911. Pressure plate; 912. Sealing gasket; 913. Fixing ring; 914. Limiting protrusion; 915. Vacuum pump; 916. One-way valve; 917. Magnetic ring; 918. Flexible sealing sleeve; 919. First diaphragm; 920. Second diaphragm; 921. Sealing plug; 922. Second ejector pin; 923. Limiting rod; 10. Sterilization device; 1001. Cotton ring; 1002. Vertical groove; 1003. Connecting block; 1004. Block; 1005. Liquid storage tank. Detailed Implementation

[0035] like Figures 4 to 9As shown, a blood collection device 9 includes a vacuum blood collection tube 901. A needle hole 902 is provided at the bottom end of the vacuum blood collection tube 901. A slide block 903 is slidably installed inside the vacuum blood collection tube 901. A needle 905 is fixedly installed at the bottom end of the slide block 903 and slidably installed within the needle hole 902. A push rod 906 is fixedly installed at the top end of the slide block 903, and the top end of the push rod 906 penetrates the top wall of the vacuum blood collection tube 901. An air extraction cylinder 915 is provided on the side wall of the vacuum blood collection tube 901. The slide block 903 is hollow, and its inner cavity communicates with the inner cavity of the needle 905. A control component is provided inside the vacuum blood collection tube 901 to control the communication between the needle 905 and the vacuum blood collection tube 901.

[0036] In practical use, firstly, the slide 903 is moved toward the needle hole 902 by the push rod 906. When the slide 903 moves, it pushes the needle 905 to move, so that the needle 905 passes through the needle hole 902. Then, the needle 905 is inserted into the blood vessel of the person to be blooded. The control component controls the connection between the needle 905 and the vacuum blood collection tube 901. Under the vacuum effect in the vacuum blood collection tube 901, the blood in the blood vessel is drawn into the vacuum blood collection tube 901 through the needle 905. Then, the push rod 906 is pulled upward to retract the needle 905 into the vacuum blood collection tube 901, thus completing the blood collection. By storing the needle 905 in the vacuum blood collection tube 901, it can be prevented from being contaminated during use. The needle 905 can be pushed out by the push rod 906. Compared with the traditional method of using a soft tube for connection, the operation is simpler and the blood collection speed is improved.

[0037] like Figures 3 to 6As shown, the control component of the first embodiment includes a first diaphragm 919. A through hole is provided at the top of the slide block 903, and the first diaphragm 919 is fixedly installed within the through hole. A cavity is formed inside the push rod 906, and a connecting rod 907 is disposed within the cavity. A sealing plug 921 is rotatably installed at the bottom end of the connecting rod 907. The outer wall of the sealing plug 921 fits against the inner wall of the cavity, sealing the inner cavity of the push rod 906 to prevent external gas from entering the vacuum blood collection tube 901 through the inner cavity of the push rod 906. A first ejector pin 908 is fixedly installed at the bottom end of the sealing plug 921. The first ejector pin 908 is located above the first diaphragm 919. The bottom of the outer wall of the push rod 906 is provided with a first connecting hole 9061. The bottom of the inner cavity of the push rod 906 is connected to the inner cavity of the vacuum blood collection tube 901 through the first connecting hole 9061. The distance between the bottom end of the first ejector pin 908 and the first diaphragm 919 is preferably -mm. A pressure plate 911 is fixedly installed on the top end of the push rod 906. A threaded post 909 is fixedly installed on the top end of the connecting rod 907. A threaded hole is provided on the pressure plate 911. The threaded post 909 is threaded into the threaded hole. A knob 910 is fixedly installed on the top end of the threaded post 909.

[0038] In practical use, the needle 905 is pushed out by the push rod 906 and inserted into the blood vessel of the person to be blooded. Then, the knob 910 is rotated, which drives the threaded column 909 to rotate, causing the threaded column 909 to move downward. When the threaded column 909 moves downward, it drives the connecting rod 907 to move downward, which pushes the first needle 908 downward through the sealing plug 921 and punctures the first diaphragm 919. After the first diaphragm 919 is punctured, the inner cavity of the slide 903 is connected to the bottom of the inner cavity of the push rod 906. The bottom of the inner cavity of the push rod 906 is connected to the inner cavity of the vacuum blood collection tube 901 through the first connecting hole 9061, so that the needle 905 is connected to the inner cavity of the vacuum blood collection tube 901. Thus, the blood of the person to be blooded is drawn into the vacuum blood collection tube 901 through the needle 905. When using the control component of this embodiment for blood collection, both venous and arterial blood can be used.

[0039] like Figure 10 and Figure 11As shown, the control component of the second embodiment includes a second diaphragm 920, which is fixedly installed on the top of the inner cavity of the needle 905 and seals the inner cavity of the needle 905. The needle 905 is slidably engaged with the slide 903. A second ejector pin 922 is fixedly installed on the top of the inner cavity of the slide 903. The second ejector pin 922 is disposed opposite to the second diaphragm 920. A limit rod 923 is fixedly installed on the top of the needle 905 to prevent the needle 905 from sliding too far upward, which would cause the top wall opening of the needle 905 to be closed. A second connecting hole 9031 is provided on the bottom wall of the slide 903, and the inner cavity of the slide 903 is connected to the inner cavity of the vacuum blood collection tube 901 through the second connecting hole 9031.

[0040] In practical use, when the needle 905 is inserted into the skin, it slides toward the second needle 922 due to the obstruction of the skin, thereby puncturing the second diaphragm 920. This allows the needle 905 to connect with the inner cavity of the vacuum blood collection tube 901 through the second connecting hole 9031, so that the blood of the person to be blooded enters the vacuum blood collection tube 901 through the needle 905. When using the control component of this embodiment for blood collection, there is no need to rotate the knob 910, and the operation process is relatively simple.

[0041] like Figures 4 to 8 As shown, a sealing gasket 912 is fixedly installed at the bottom end of the pressure plate 911, and a fixing ring 913 is fixedly installed at the top end of the vacuum blood collection tube 901. The outer diameter of the pressure plate 911 is adapted to the inner diameter of the fixing ring 913, so that the pressure plate 911 can be inserted into the fixing ring 913, thereby improving the sealing performance of the connection. A flexible sealing sleeve 918 is provided between the slide 903 and the bottom inner wall of the vacuum blood collection tube 901. The top end of the flexible sealing sleeve 918 is fixedly connected to the bottom wall of the slide 903, and the bottom end of the flexible sealing sleeve 918 is fixedly connected to the bottom inner wall of the vacuum blood collection tube 901, so that the inner cavity of the flexible sealing sleeve 918 is... The inner cavity of the vacuum blood collection tube 901 is not connected, and the needle 905 is located inside the flexible sealing sleeve 918. Two sliding grooves 9011 are symmetrically opened at the bottom of the inner wall of the vacuum blood collection tube 901. Slider 904 is fixedly installed on both opposite side walls of the slide seat 903. The two sliders 904 are slidably installed in the two sliding grooves 9011 respectively. A limiting protrusion 914 is fixedly installed in the sliding groove 9011. The limiting protrusion 914 is made of elastic material. The distance between the limiting protrusion 914 and the bottom wall of the sliding groove 9011 is the same as the thickness of the slide seat 903, so that the slide seat 903 can just fit between the limiting protrusion 914 and the bottom wall of the sliding groove 9011.

[0042] In practical use, the cooperation of the pressure plate 911, sealing gasket 912 and fixing ring 913 can improve the sealing of the connection between the push rod 906 and the vacuum blood collection tube 901, preventing external gas from entering the vacuum blood collection tube 901 when vacuuming. The flexible sealing sleeve 918 can prevent the inner cavity of the flexible sealing sleeve 918 from communicating with the inner cavity of the vacuum blood collection tube 901, thereby preventing air leakage at the connection between the needle 905 and the needle hole 902. The limiting protrusion 914 can limit the slide 903, preventing the needle 905 from retracting into the vacuum blood collection tube 901 when injection.

[0043] like Figures 4 to 6 As shown, the vacuum blood collection tube 901 has an air extraction cylinder 915 on its side wall. The air extraction cylinder 915 is equipped with a one-way valve 916. The one-way valve 916 prevents external gas from entering the vacuum blood collection tube 901 through the air extraction cylinder 915. The outer wall of the air extraction cylinder 915 is fitted with a magnetic ring 917.

[0044] In practical use, the vacuum blood collection tube 901 is evacuated by the vacuum pump 915, and the one-way valve 916 prevents external gas from entering the vacuum blood collection tube 901 through the vacuum pump 915. The magnetic ring 917 can be used to attach the vacuum pump 915 to the vacuum nozzle 6.

[0045] like Figures 1 to 3 As shown, the present invention also discloses a blood collection instrument, including a housing 1 and a vacuum pump 2. A groove is formed on the front wall of the housing 1, and a support column 3 is fixedly installed in the groove. A support ring 4 is fixedly installed on the support column 3. The blood collection device 9 is slidably installed in the support ring 4. A limiting groove 401 is formed on the inner wall of the support ring 4. An air suction nozzle 6 adapted to the air suction cylinder 915 is provided in the limiting groove 401. A magnetic block adapted to the magnetic ring 917 is provided on the air suction nozzle 6, thereby... The vacuum pump 915 is attached to the vacuum nozzle 6. The top of the limiting groove 401 is connected to a guide groove 402, which is set as an inverted triangle, so that the vacuum pump 915 can slide along the inclined inner wall of the guide groove 402 into the limiting groove 401. The vacuum nozzle 6 is connected to the output end of the vacuum pump 2 through the air supply pipe 5. The top of the box 1 is fixedly installed with a cylinder 7. The output end of the cylinder 7 penetrates the top wall of the box 1, and the bottom end of the cylinder 7 is fixedly installed with a push plate 8.

[0046] In practical use, the blood collection device 9 is inserted into the support ring 4. During insertion, the vacuum pump 915 enters the guide groove 402. Under the guidance of the guide groove 402, the vacuum pump 915 slides into the limiting groove 401 and is attracted to the vacuum nozzle 6 by the magnetic attraction of the magnetic ring 917. Then, the output end of the cylinder 7 is extended, thereby driving the push plate 8 to move downward, so that the push plate 8 presses the push rod 906 on the blood collection device 9, thereby pressing the sealing gasket 912 onto the top wall of the vacuum blood collection tube 901. Then, the vacuum pump 2 is turned on. The vacuum pump 2 extracts the gas from the vacuum blood collection tube 901 through the gas supply pipe 5 and the vacuum nozzle 6, thereby realizing the vacuuming of the vacuum blood collection tube 901. The vacuuming process is relatively simple and can be performed before blood collection, avoiding the problem of easy air leakage of the vacuum blood collection tube 901 during transportation after the traditional vacuuming of the vacuum blood collection tube 901 is performed in advance.

[0047] This invention also discloses a blood collection method, comprising the following steps:

[0048] S1. Push the slide block 903 toward the needle hole 902 by the push rod 906. When the slide block 903 moves, it pushes the needle 905 to move, so that the needle 905 passes through the needle hole 902. Vacuum is drawn into the vacuum blood collection tube 901 by the vacuum pump 915.

[0049] S2. Insert the needle 905 into the blood vessel of the person to be blooded, and control the needle 905 to connect with the vacuum blood collection tube 901 through the control component, so that the blood in the blood vessel is drawn into the vacuum blood collection tube 901 through the needle 905.

[0050] S3. Pull the push rod 906 upward to retract the needle 905 into the vacuum blood collection tube 901.

[0051] A blood collection instrument, blood collection method and blood collection device with automatic disinfection function, including a disinfection device 10, a needle hole 902 and a needle 905, wherein the needle 905 is slidably connected in the needle hole 902, the disinfection device 10 is disposed on the outside of the needle hole 902, and when the needle 905 protrudes from the needle hole 902, the disinfection device automatically disinfects and stops bleeding for the needle 905 and the user's wound.

[0052] Specifically, the disinfection device includes a cotton ring 1001, a vertical groove 1002, a connecting block 1003, a blocking block 1004, and a liquid storage tank 1005. The vertical groove 1002 is provided on both sides of the needle hole 902. The connecting blocks 1003 that slide within the vertical groove 1002 are provided on both sides of the needle 905. The liquid storage tank 1005 is provided on the upper side of the vertical groove 1002, and the liquid storage tank 1005 stores disinfectant alcohol. The blocking block 1004 that cooperates with the liquid storage tank 1005 is provided on the upper side of the connecting block 1003. The cotton ring 1001 is sleeved on the outside of the needle hole 902 and cooperates with the connecting block 1003. When the needle is inserted downward, the connecting block moves the blocking block downward, and the disinfectant alcohol flows from the liquid storage tank into the cotton ring. After blood collection, the cotton ring is removed and the wound is pressed to facilitate disinfection and hemostasis. At the same time, the inside of the cotton ring is used to wipe the needle to disinfect it.

[0053] Working principle: When using the control component of the first embodiment, pushing the push rod 906 pushes out the needle 905. After inserting the needle 905 into the blood vessel of the person to be blooded, rotating the knob 910 drives the threaded column 909 to rotate, thereby causing the threaded column 909 to move downward. When the threaded column 909 moves downward, it drives the connecting rod 907 to move downward, thereby pushing the first ejector needle 908 downward through the sealing plug 921 and puncturing the first diaphragm 919. After the first diaphragm 919 is punctured, the inner cavity of the slide 903 communicates with the bottom of the inner cavity of the push rod 906, and the bottom of the inner cavity of the push rod 906 is connected through the first communication... The orifice 9061 is connected to the inner cavity of the vacuum blood collection tube 901, thereby connecting the needle 905 to the inner cavity of the vacuum blood collection tube 901. This allows blood from the person being collected to be drawn into the vacuum blood collection tube 901 through the needle 905. While this embodiment's control component can be used for blood collection from both veins and arteries, it requires rotating the knob 910, making the operation cumbersome. In the second embodiment's control component, when the needle 905 pierces the skin, it slides towards the second needle 922 due to the skin's resistance, thus piercing the second diaphragm 920 and allowing the needle 905 to pass through. The second connecting hole 9031 is connected to the inner cavity of the vacuum blood collection tube 901, allowing the blood of the person to be collected to enter the vacuum blood collection tube 901 through the needle 905. When using the control component of this embodiment for blood collection, there is no need to rotate the knob 910, making the operation process relatively simple. When evacuating the vacuum blood collection tube 901, the blood collection device 9 is inserted into the support ring 4. During insertion, the suction cylinder 915 enters the guide groove 402. Under the guidance of the guide groove 402, the suction cylinder 915 slides into the limiting groove 401 and is attracted to the suction nozzle 6 by the magnetic attraction of the magnetic ring 917. Then, the cylinder is controlled. The output end of 7 extends, thereby driving the push plate 8 to move downward, so that the push plate 8 presses the push rod 906 on the blood collection device 9, thereby pressing the sealing gasket 912 onto the top wall of the vacuum blood collection tube 901. Then, the vacuum pump 2 is turned on. The vacuum pump 2 extracts the gas in the vacuum blood collection tube 901 through the gas supply pipe 5 and the air extraction nozzle 6, thereby realizing the vacuuming of the vacuum blood collection tube 901. When the needle is extended downward, the connecting block drives the blocking block to move downward. Disinfecting alcohol flows from the liquid storage tank into the cotton ring. After blood collection is completed, the cotton ring is removed and pressed on the wound to facilitate disinfection and hemostasis. At the same time, the inside of the cotton ring is used to wipe the needle to disinfect it.

Claims

1. A blood collection instrument with automatic disinfection function, characterized in that: The device includes a blood collection device, a disinfection device, a needle insertion hole, and a needle. The blood collection device includes a vacuum blood collection tube with a needle insertion hole at its bottom. A slide block is slidably installed inside the vacuum blood collection tube, and a needle is fixedly installed at the bottom of the slide block. The needle is slidably installed inside the needle insertion hole. The disinfection device is located outside the needle insertion hole. When the needle protrudes from the needle insertion hole, the disinfection device automatically disinfects and stops bleeding from the needle and the user's wound. The disinfection device includes a cotton ring, a vertical groove, a connecting block, a plug, and a liquid storage tank. The vertical groove is provided on both sides of the needle hole. The connecting block is provided on both sides of the needle and slides in the vertical groove. The liquid storage tank is provided on the upper side of the vertical groove and stores disinfectant alcohol. The plug is provided on the upper side of the connecting block and cooperates with the liquid storage tank. The cotton ring is sleeved on the outside of the needle hole and cooperates with the connecting block. A push rod is fixedly installed at the top of the slide block, and the top of the push rod penetrates the top wall of the vacuum blood collection tube. An air extraction cylinder is provided on the side wall of the vacuum blood collection tube. The slide block is hollow, and the inner cavity of the slide block is connected to the inner cavity of the needle. A control component is provided inside the vacuum blood collection tube, and the control component is used to control the communication between the needle and the vacuum blood collection tube. The control assembly includes a first diaphragm. The top of the slide has a through hole, and the first diaphragm is fixedly installed in the through hole. The push rod has a cavity inside, and a connecting rod is installed in the cavity. A sealing plug is rotatably installed at the bottom of the connecting rod. The outer wall of the sealing plug is in contact with the inner wall of the cavity. A first ejector pin is fixedly installed at the bottom of the sealing plug. The first ejector pin is located above the first diaphragm. A first connecting hole is opened at the bottom of the outer wall of the push rod, and the bottom of the inner cavity of the push rod is connected to the inner cavity of the vacuum blood collection tube through the first connecting hole.

2. The blood collection instrument with automatic disinfection function according to claim 1, characterized in that: A pressure plate is fixedly installed at the top of the push rod, and a threaded post is fixedly installed at the top of the connecting rod. A threaded hole is opened on the pressure plate, and the threaded post is threadedly installed in the threaded hole. A knob is fixedly installed at the top of the threaded post.

3. The blood collection instrument with automatic disinfection function according to claim 2, characterized in that: A sealing gasket is fixedly installed at the bottom of the pressure plate, a fixing ring is fixedly installed at the top of the vacuum blood collection tube, a flexible sealing sleeve is provided between the slide and the bottom inner wall of the vacuum blood collection tube, the top of the flexible sealing sleeve is fixedly connected to the bottom wall of the slide, the bottom of the flexible sealing sleeve is fixedly connected to the bottom inner wall of the vacuum blood collection tube, and the needle is located inside the flexible sealing sleeve.

4. The blood collection instrument with automatic disinfection function according to any one of claims 1-3, comprising a housing and a vacuum pump, characterized in that: The front wall of the box has a groove, a support column is fixedly installed in the groove, a support ring is fixedly installed on the support column, the blood collection device is slidably installed in the support ring, the inner wall of the support ring has a limit groove, the limit groove is provided with a suction nozzle adapted to the suction cylinder, the top of the limit groove is connected to a guide groove, and the suction nozzle is connected to the output end of the vacuum pump through a gas supply pipe.

5. The blood collection instrument with automatic disinfection function according to claim 4, characterized in that: A cylinder is fixedly installed at the top of the box body, the output end of the cylinder penetrates through the top wall of the box body, and a push plate is fixedly installed at the bottom of the cylinder.

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