Intelligent batch blood sampling device

Abstract

The application belongs to the technical field of medical apparatus and specifically relates to an intelligent batch blood sampling device, which comprises a bottom plate, a liftable puncture needle frame and a horizontally-slidable mounting seat arranged on the bottom plate, a puncture needle being detachably fixed on the puncture needle frame, a driving assembly arranged on the bottom plate and used for driving the puncture needle frame to lift, the driving assembly comprising a servo motor, a transmission assembly arranged between the mounting seat and the servo motor, the transmission assembly comprising a driving gear, a driven outer gear ring, a one-way bearing, a driven sector gear and a rack, so that the sliding of the mounting seat is realized at a specific stage, and the automatic replacement of blood collection tubes is realized, so that nurses can fix the puncture needle on a patient to avoid needle falling; the mounting seat is provided with a controller and a mounting groove used for placing the blood collection tubes, a non-contact liquid level sensor is arranged in the mounting groove, the controller controls the servo motor to work according to the signal received from the non-contact liquid level sensor, so that the monitoring of the blood sampling amount is realized, and the blood sampling amount is prevented from being too little or too much.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to an intelligent batch blood sampling device. Background Art

[0002] A blood test is the most general and basic blood test. It analyzes and examines a person's anemia, cholesterol, diabetes, various infections, kidney function, liver function, blood disorders, and physical abnormalities. It's one of the most common laboratory tests performed in hospitals. Because there are many test items, and different test items have different blood test requirements, for example, routine blood tests, coagulation tests, and erythrocyte sedimentation rates require whole blood with different coagulants, while biochemical tests (liver function, blood sugar, lipid profile, etc.) require serum separation. Therefore, nurses often collect multiple tubes of blood from patients during blood tests.

[0003] In clinical practice, the blood collection process is as follows: a nurse inserts a lancet into the patient's vein, then inserts a puncture needle into a blood collection tube. Blood flows through the catheter (the lancet and puncture needle are located at either end of the infusion hose) into the blood collection tube (a vacuum tube). The nurse visually assesses the amount of blood collected and, based on experience, determines if sufficient blood has been collected. The nurse gently removes the tube, places it in place, takes a new tube, and inserts the puncture needle into the new tube, thus beginning the second blood collection. This process is repeated until the required number of blood collection tubes has been collected. Finally, the lancet is removed and a cotton swab is used to press the patient's blood collection point. This process requires the nurse to use both hands to change collection tubes: one hand holds the puncture needle, and the other hand removes / inserts the tube. This is cumbersome and labor-intensive. Furthermore, the nurse cannot secure the lancet during this process, which can cause it to become dislodged, interrupting the blood collection process and requiring a second puncture. This increases the patient's pain, especially for children, who are more susceptible to needle dislodgment due to restlessness. In addition, nurses judge whether the amount of blood collected is sufficient based on their experience. For novice nurses, it is easy to make inaccurate judgments, resulting in insufficient blood collection and delaying the test. Therefore, it is necessary to design a blood collection device that can prevent needle dislocation and intelligently determine the amount of blood collected. Summary of the Invention

[0004] The present invention aims to provide an intelligent batch blood collection device to solve the problems of easy needle removal and insufficient blood collection in the traditional blood collection process.

[0005] In order to achieve the above-mentioned purpose, the solution of the present invention is: an intelligent batch blood collection device, a blood collection component and a base plate, the blood collection component includes a blood collection needle, a catheter and a puncture needle, the root of the puncture needle is provided with a push handle, the base plate is provided with a liftable puncture needle holder and a horizontally slidable mounting seat, the puncture needle holder includes a fixed plate and a detachable plate, the detachable plate can be detachably mounted on the fixed plate, and a semi-step hole groove is provided on the side wall opposite to the detachable plate and the fixed plate, and the two semi-step hole grooves are assembled into a stepped hole groove for fixing the push handle; the base plate is provided with a driving component for driving the puncture needle holder to rise and fall, the driving component includes a servo motor and a ball screw pair, the servo motor is used to drive the screw of the ball screw pair to rotate, and the fixed plate is fixedly connected to the nut of the ball screw pair; a transmission component is provided between the mounting seat and the servo motor, and the transmission component includes a driving gear, a driven outer gear ring, a one-way bearing, a driven fan gear and a rack The driving gear is coaxially fixedly connected to the output end of the servo motor, the driven outer gear ring is fixedly mounted on the outer peripheral wall of the one-way bearing, the one-way bearing and the driven sector gear are coaxially arranged, the rack is fixedly mounted on the side wall of the mounting seat, the driving gear is meshed with the driven outer gear ring, and the driven sector gear can be meshed with the rack; the mounting seat is provided with a plurality of mounting slots for placing blood collection tubes, and a cover plate for covering the mounting slots is detachably mounted on the mounting seat, and a plurality of through holes for the puncture needles to pass through are formed on the cover plate, the through holes correspond to the notches of the mounting slots and the aperture of the through holes is smaller than the aperture of the mounting slots, the bottom of the mounting slot is fixedly provided with an insertion slot for inserting the bottom of the blood collection tube, a non-contact liquid level sensor is fixedly mounted on the groove wall of the mounting slot, a controller is provided on the mounting seat, the non-contact liquid level sensor is electrically connected to the controller, and the controller controls the operation of the servo motor according to the signal received from the non-contact liquid level sensor.

[0006] The working principle and beneficial effects of this solution are as follows: In this solution, the puncture needle of the blood collection assembly is fixed to the puncture needle holder, and the blood collection tube is fixed in the mounting groove of the mounting seat. The puncture needle holder is raised and lowered by the drive assembly, while the mounting seat is horizontally slid by the transmission assembly. The transmission assembly only performs its transmission function during the second half of the puncture needle holder's upward movement. Thus, when the puncture needle holder moves downward, the puncture needle penetrates the tube stopper of the blood collection tube to complete blood collection. During this process, a non-contact liquid level sensor monitors the amount of blood collected. When the amount of blood collected is sufficient, the controller controls the drive assembly to operate and remove the needle, completing the blood collection process for that blood collection tube. Furthermore, only after the needle is removed does the driven sector gear engage with the rack, enabling the mounting seat to automatically slide. The next blood collection tube moves below the puncture needle, and the puncture needle holder moves downward to collect the second tube of blood, thereby achieving the collection of multiple tubes of blood. That is, this solution realizes the automatic replacement of blood collection tubes, which is suitable for batch blood collection work and will not occupy the nurse's hands. The nurse can fix the blood collection needle on the patient to avoid needle removal. In addition, this solution realizes intelligent monitoring of blood collection volume to avoid too little or too much blood collection, providing guarantee for subsequent testing work.

[0007] Optionally, a connecting screw is fixedly connected to the detachable plate, a channel for the connecting screw to pass through is opened on the fixed plate, and a locking nut is threadedly connected to the connecting screw.

[0008] In this solution, the detachable plate can be disassembled and assembled by rotating the locking nut so that the locking nut is in close contact with or away from the fixing plate, thereby fixing or disassembling the puncture needle. The operation is convenient and it is easy to replace a new blood collection component.

[0009] Optionally, both side edges of the cover plate are hinged with connecting pieces, both side walls of the fixing seat are fixedly connected with horizontally arranged fixing columns, and the connecting pieces are provided with mounting holes for the fixing columns to pass through.

[0010] In this solution, the connecting piece rotates relative to the cover plate toward the side wall of the mounting seat, and the fixing column passes through the mounting hole, thereby achieving installation of the cover plate, which is easy to operate.

[0011] Optionally, a plurality of non-contact liquid level sensors are arranged along the inner circumferential wall of the installation groove.

[0012] In this solution, since a label paper recording information is pasted on the blood collection tube, when multiple non-contact liquid level sensors are arranged on the inner wall of the installation groove, the blood collection volume in the blood collection tube can be monitored to avoid the label paper affecting the monitoring work.

[0013] Optionally, a T-shaped sliding block is provided on the bottom wall of the mounting seat, and a T-shaped sliding groove for the T-shaped sliding block to slide is provided on the bottom plate.

[0014] In this solution, the sliding cooperation between the T-shaped slider and the T-shaped slot can effectively ensure that the mounting seat slides horizontally along a predetermined direction and does not move vertically.

[0015] Optionally, a vertical plate is fixedly mounted on the base plate, both ends of the screw rod of the ball screw pair are rotatably mounted on the vertical plate, one side of the nut of the ball screw pair is connected to the fixed plate, and the other side of the nut of the ball screw pair is fixedly connected to a slider, and a vertical sliding groove for sliding of the slider is opened on the vertical plate.

[0016] In this solution, the nut of the ball screw pair is restricted to move only in the vertical direction by means of the slider and the vertical groove on the vertical plate.

[0017] Optionally, there are two groups of drive assemblies, one end of the fixing plate is connected to the nut in one group of drive assemblies, and the other end of the fixing plate is connected to the nut in the other group of drive assemblies.

[0018] In this solution, both ends of the fixed plate are driven by the driving assembly, the forces are balanced, and the lifting and lowering are stable.

[0019] Optionally, the catheter includes a main tube and at least two branch tubes, the puncture needle is arranged at the end of the branch tube away from the main tube, the number of stepped hole grooves is the same as the number of branch tubes, and the number of mounting grooves in the same column on the mounting seat is the same as the number of branch tubes.

[0020] In this solution, after the blood collection needle is inserted into the patient's vein, blood flows into the corresponding blood collection tube through the main tube and the branch tube at the same time, thereby improving the blood collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a top view of an intelligent batch blood sampling device in Example 1 of the present invention;

[0022] Figure 2 for Figure 1 A is an enlarged schematic diagram;

[0023] Figure 3 This is a partial cross-sectional view from the left side of an intelligent batch blood sampling device in Example 1 of the present invention;

[0024] Figure 4 This is a structural diagram of the device after the puncture needle is installed on the puncture needle holder and the blood collection tube is installed in the installation slot;

[0025] Figure 5 A top view of the mounting slot in the second embodiment of the present invention;

[0026] Figure 6 This is a partial cross-sectional view from the left side of an intelligent batch blood sampling device in Example 3 of the present invention;

[0027] Figure 7 This is a partial sectional view from the left side of an intelligent batch blood collection device in Example 4 of the present invention. DETAILED DESCRIPTION

[0028] The following is further described in detail through specific implementation methods:

[0029] The symbols in the drawings of the specification include: blood collection assembly 1, blood collection needle 101, catheter 102, main tube 1021, branch tube 1022, puncture needle 103, push handle 1031, bottom plate 2, T-shaped slide 201, puncture needle holder 3, fixed plate 301, channel 3011, removable plate 302, connecting screw 303, locking nut 304, stepped hole groove 310, semi-stepped hole groove 3101, mounting seat 4, mounting groove 401, servo Motor 5, ball screw pair 6, screw 601, nut 602, vertical plate 7, bearing 8, slider 9, driving gear 10, driven outer ring gear 11, one-way bearing 12, driven sector gear 13, rack 14, roller 15, T-shaped slider 16, cover plate 17, through hole 1701, hinge 1710, connecting piece 18, fixing column 19, insertion groove 20, non-contact liquid level sensor 21, controller 22, blood collection tube 23.

[0030] Embodiment One

[0031] This embodiment is basically as Figures 1-4 shown: an intelligent batch blood sampling device, comprising a blood sampling assembly 1 and a base plate 2, the blood sampling assembly 1 comprising a blood sampling needle 101, a catheter 102 and a puncture needle 103, the blood sampling needle 101 being arranged at one end of the catheter 102 for puncturing the patient's vein, the puncture needle 103 being arranged at the other end of the catheter 102 for puncturing a blood collection tube 23; the root of the puncture needle 103 is provided with a push handle 1031.

[0032] In combination with Figure 1 and Figure 2 shown, the base plate 2 is provided with a puncture needle holder 3 that can be lifted and a mounting seat 4 that can slide horizontally, the puncture needle holder 3 comprising a fixed plate 301 and a detachable plate 302, the detachable plate 302 being detachably mounted on the fixed plate 301, specifically, two connecting screw rods 303 are welded on the detachable plate 302, in combination with Figure 3 shown, the fixed plate 301 is provided with a passage 3011 for the connecting screw rods 303 to pass through, the connecting screw rods 303 are threadedly connected with locking nuts 304, the locking nuts 304 abut against the fixed plate 301, so as to abut the detachable plate 302 against the fixed plate 301 to realize the mounting of the detachable plate 302. The opposite side walls of the detachable plate 302 and the fixed plate 301 are both provided with a half-ladder hole groove 3101, the two half-ladder hole grooves 3101 are spliced into a ladder hole groove 310 for fixing the push handle 1031, the inner diameters of the top end and the bottom end of the ladder hole groove 310 are both smaller than the inner diameter of the middle part of the ladder hole groove 310.

[0033] The base plate 2 is provided with a drive assembly for driving the puncture needle holder 3 to lift, the drive assembly comprising a servo motor 5 and a ball screw pair 6, the servo motor 5 is used to drive the rotation of the screw rod 601 of the ball screw pair 6, the fixed plate 301 is fixedly connected with the nut 602 of the ball screw pair 6, and in this embodiment, a vertical plate 7 is welded on the base plate 2, both ends of the screw rod 601 of the ball screw pair 6 are rotatably installed on the vertical plate 7 through bearings 8, the nut 602 of the ball screw pair 6 is welded with a sliding block 9, and the vertical plate 7 is provided with a vertical sliding groove for the sliding block 9 to slide. In this way, when the servo motor 5 works, the screw rod 601 of the ball screw pair 6 rotates, the nut 602 of the ball screw pair 6 drives the fixed plate 301 to move up and down, thereby realizing the up and down movement of the puncture needle 103.

[0034] In combination with Figure 2 and Figure 3As shown, a transmission assembly is provided between the mounting base 4 and the servo motor 5, and the transmission assembly includes a driving gear 10, a driven outer ring gear 11, a one-way bearing 12, a driven sector gear 13 and a rack 14. The driving gear 10 is coaxially fixedly connected to the output end of the servo motor 5, the driven outer ring gear 11 is fixedly mounted on the outer peripheral wall of the one-way bearing 12, the one-way bearing 12 and the driven sector gear 13 are coaxially arranged (the one-way bearing 12 and the driven sector gear 13 are coaxially fixedly mounted on the roller 15, and the roller 15 is rotatably mounted on the base plate 2), the rack 14 is fixedly mounted on the side wall of the mounting base 4, the driving gear 10 is meshed with the driven outer ring gear 11, and the driven sector gear 13 can be meshed with the rack 14 (initially, the driven sector gear 13 is not meshed with the rack 14, and in this embodiment, the driven sector gear 13 is meshed with the rack 14 after rotating 180°).

[0035] A T-shaped slider 16 is welded to the bottom wall of the mounting base 4, and a T-shaped slot 201 is provided on the bottom plate 2 for the T-shaped slider 16 to slide. The mounting base 4 is provided with several mounting slots 401 for placing blood collection tubes 23. A cover plate 17 is removably mounted on the mounting base 4 to cover the mounting slots 401. Specifically, both edges of the cover plate 17 are hingedly connected to connecting pieces 18 via hinges 1710. Horizontally arranged fixing posts 19 are welded to both side walls of the mounting base, with the distance between adjacent fixing posts 19 being 50 mm. The connecting pieces 18 are provided with mounting holes for the fixing posts 19 to pass through. Once the fixing posts 19 pass through the corresponding mounting holes, the cover plate 17 can be mounted on the mounting base 4. The cover plate 17 is provided with a plurality of through holes 1701 for the puncture needle 103 to pass through. The through holes 1701 correspond to the notches of the mounting slot 401 and have a smaller aperture than the notch aperture of the mounting slot 401. The bottom of the mounting slot 401 is fixedly mounted with an insertion slot 20 for inserting the bottom of the blood collection tube 23. A non-contact liquid level sensor 21 is fixedly mounted on the wall of the mounting slot 401. A controller 22 is fixedly mounted on the mounting seat 4. The non-contact liquid level sensor 21 is electrically connected to the controller 22. The controller 22 controls the operation of the servo motor 5 based on the signal received from the non-contact liquid level sensor 21.

[0036] During use, the connecting piece 18 on the cover plate 17 is flipped over to disengage the connecting piece 18 from the fixing post 19. After removing the cover plate 17, the blood collection tube 23 is placed into the mounting groove 401. The bottom of the blood collection tube 23 is now inserted into the insertion groove 20 in the mounting groove 401. A gap exists between the blood collection tube 23 and the inner wall of the mounting groove 401. This facilitates the installation of the non-contact liquid level sensor 21 and makes it easier for the nurse to remove the blood collection tube 23 from the mounting groove 401. After all the pre-prepared blood collection tubes 23 are installed, the cover plate 17 is replaced on the mounting base 4, and the connecting piece 18 is passed through the fixing post 19. The blood collection tube 23 is then pressed against the cover plate 17 to secure it.

[0037] Then, the locking nut 304 is turned, the removable plate 302 is pulled to the left, and the puncture needle 103 is placed in the semi-stepped hole groove 3101 on the fixed plate 301. The removable plate 302 is then pushed back to the right, so that the two semi-stepped hole grooves 3101 are combined into a stepped hole groove 310. Finally, the locking nut 304 is rotated in the opposite direction, so that the removable plate 302 is close to the fixed plate 301, thereby fixing the puncture needle 103 on the puncture needle holder 3, with the needle tip of the puncture needle 103 facing downward, and the puncture needle 103 is located directly above the corresponding blood collection tube 23. Figure 4 shown.

[0038] Next, the nurse inserts the blood collection needle 101 into the patient's vein, and the venous blood flows into the catheter 102. At the same time, the servo motor 5 is started, and the servo motor 5 drives the screw rod 601 to rotate counterclockwise, and the nut 602 drives the fixed plate 301 to move downward, so that the puncture needle holder 3 moves down and pierces the blood collection tube 23. The venous blood flows into the blood collection tube 23 along the catheter 102, and the venous blood in the blood collection tube 23 gradually increases. When the non-contact liquid level sensor 21 detects that the liquid level in the blood collection tube 23 meets the standard, the controller 22 controls the servo motor 5 to drive the screw rod 601 to rotate clockwise, and the nut 602 drives the fixed plate 301 to move upward, thereby realizing automatic removal of the puncture needle 103, thereby avoiding excessive or insufficient blood collection.

[0039] During the above process, when the puncture needle holder 3 moves downward, the driving gear 10 in the transmission assembly engages with the driven outer ring gear 11, causing the driven outer ring gear 11 to rotate clockwise. Due to the presence of the one-way bearing 12, the roller 15 and the driven sector gear 13 do not rotate accordingly during this process. When the puncture needle holder 3 moves upward, the driving gear 10 rotates clockwise, while the driven outer ring gear 11 rotates counterclockwise. The one-way bearing 12 locks, thereby driving the driven sector gear 13 to rotate counterclockwise. During the counterclockwise rotation of the driven sector gear 13, after the puncture needle 103 is completely removed, the driven sector gear 13 engages with the rack 14, which drives the mounting base 4 to slide leftward. After the driven sector gear 13 and the rack 14 separate, the mounting base 4 stops. It should be noted that during the upward return movement of the puncture needle holder 3, the driven sector gear 13 rotates exactly n times (n is a natural integer, such as 1, 2, 3, 4, etc.), and the sliding distance of the mounting base 4 allows the next blood collection tube 23 on the mounting base 4 to move directly below the puncture needle 103. Subsequently, the servo motor 5 drives the screw 601 to rotate counterclockwise again, and the puncture needle holder 3 moves downward to begin the second blood collection. This process is repeated until multiple blood collection tubes are completed.

[0040] After the last tube of blood is collected, the puncture needle holder 3 moves upward and returns to its original position. After the puncture needle holder 3 returns to its original position, the nurse turns off the servo motor 5, removes the blood collection needle 101, and then removes the used puncture needle 103 from the puncture needle holder 3. The blood collection assembly 1 is then discarded into a medical waste bin. Finally, the cover plate 17 is removed, and the blood collection tubes 23 are removed from the mounting slot 401. They are then stored together and sent for inspection.

[0041] In summary, in this embodiment, the non-contact liquid level sensor 21 and controller 22 are used to intelligently monitor the blood collection volume, thereby preventing excessive or insufficient blood collection. The blood collection volume is used as a control signal to control the operation of the servo motor 5, and the transmission component is used to automatically replace the blood collection tube 23, thereby avoiding the nurse's manual replacement of the blood collection tube and reducing the nurse's workload. In addition, the nurse can manually support the blood collection needle 101 during the blood collection process to avoid the problem of needle removal. Moreover, in this embodiment, the drive component is used to achieve the raising and lowering of the puncture needle holder 3, thereby achieving automatic insertion and removal of the puncture needle 103, further improving the degree of automation of the device, and is particularly suitable for batch blood collection (multi-tube blood collection).

[0042] Example 2

[0043] The difference between this embodiment and the first embodiment is that: Figure 5 As shown, in this embodiment, the number of non-contact liquid level sensors 21 is four, and the four non-contact liquid level sensors 21 are evenly distributed along the circumference of the installation groove 401, thereby preventing the label paper on the blood sampling tube 23 (the opaque label paper is pasted on the blood sampling tube 23 and occupies about half of the circumference of the blood sampling tube 23) from affecting the liquid level monitoring.

[0044] Example 3

[0045] The difference between this embodiment and the first embodiment is that: Figure 6 As shown, in this embodiment, there are two sets of drive assemblies, located on the left and right sides of the puncture needle holder 3. One end of the fixing plate 301 is connected to the nut 602 in one set of drive assemblies, and the other end of the fixing plate 301 is connected to the nut 602 in the other set of drive assemblies. This ensures that both ends of the fixing plate 301 are driven by the drive assemblies, resulting in balanced forces and stable lifting and lowering. Furthermore, in this embodiment, the slider 9 is unnecessary.

[0046] Example 4

[0047] The difference between this embodiment and the third embodiment is that: Figure 7As shown, in this embodiment, the catheter 102 includes a main tube 1021 and two branch tubes 1022, the puncture needle 103 is arranged at the end of the branch tube 1022 away from the main tube 1021, the number of the stepped hole grooves 310 is the same as the number of the branch tubes 1022, and the number of the mounting grooves 401 located in the same column on the mounting seat 4 is the same as the number of the branch tubes 1022.

[0048] In this embodiment, the two puncture needles 103 are inserted into the corresponding blood collection tubes 23 at the same time, so that two tubes of blood can be collected at the same time, which can effectively improve the efficiency of blood collection.

[0049] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this implementation case. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the invention belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the present invention. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An intelligent batch blood collection device, comprising a blood collection assembly and a base plate, wherein the blood collection assembly comprises a blood collection needle, a catheter, and a puncture needle, wherein a push handle is provided at the base of the puncture needle, and wherein: The base plate is provided with a liftable puncture needle holder and a horizontally slidable mounting seat, and the puncture needle holder includes a fixed plate and a detachable plate, the detachable plate can be detachably mounted on the fixed plate, and a semi-step hole groove is provided on the side wall opposite to the fixed plate, and the two semi-step hole grooves are assembled into a stepped hole groove for fixing the push handle; a driving assembly for driving the puncture needle holder to rise and fall is provided on the base plate, and the driving assembly includes a servo motor and a ball screw pair, the servo motor is used to drive the screw of the ball screw pair to rotate, and the fixed plate is fixedly connected to the nut of the ball screw pair; a transmission assembly is provided between the mounting seat and the servo motor, and the transmission assembly includes a driving gear, a driven outer gear ring, a one-way bearing, a driven sector gear and a rack, the driving gear is coaxially fixedly connected to the output end of the servo motor, and the driven outer gear ring is fixedly mounted on the one-way bearing On the outer peripheral wall of the bearing, the one-way bearing and the driven sector gear are coaxially arranged, the rack is fixedly mounted on the side wall of the mounting seat, the driving gear is meshed with the driven outer gear ring, and the driven sector gear can be meshed with the rack; the mounting seat is provided with a plurality of mounting grooves for placing blood collection tubes, and a cover plate for covering the mounting groove is detachably mounted on the mounting seat, and a plurality of through holes for the puncture needle to pass through are formed on the cover plate, the through holes correspond to the notches of the mounting groove and the aperture of the through holes is smaller than the aperture of the mounting groove, the bottom of the mounting groove is fixedly provided with an insertion groove for inserting the bottom of the blood collection tube, and a non-contact liquid level sensor is fixedly mounted on the groove wall of the mounting groove, a controller is provided on the mounting seat, the non-contact liquid level sensor is electrically connected to the controller, and the controller controls the operation of the servo motor according to the signal received from the non-contact liquid level sensor.

2. The intelligent batch blood sampling device according to claim 1, characterized in that: The detachable plate is fixedly connected with a connecting screw, the fixed plate is provided with a channel for the connecting screw to pass through, and the connecting screw is threadedly connected with a locking nut.

3. The intelligent batch blood sampling device according to claim 1, characterized in that: The edges of both sides of the cover plate are hinged with connecting pieces, and the two side walls of the fixing seat are fixedly connected with horizontally arranged fixing columns. The connecting pieces are provided with mounting holes for the fixing columns to pass through.

4. The intelligent batch blood sampling device according to claim 1, characterized in that: A plurality of non-contact liquid level sensors are arranged along the inner peripheral wall of the installation groove.

5. The intelligent batch blood sampling device according to claim 1, characterized in that: The bottom wall of the mounting seat is provided with a T-shaped sliding block, and the bottom plate is provided with a T-shaped sliding groove for the T-shaped sliding block to slide.

6. The intelligent batch blood sampling device according to claim 1, characterized in that: A vertical plate is fixedly installed on the base plate, and both ends of the screw rod of the ball screw pair are rotatably installed on the vertical plate. One side of the nut of the ball screw pair is connected to the fixed plate, and the other side of the nut of the ball screw pair is fixedly connected to a slider. A vertical sliding groove for sliding the slider is opened on the vertical plate.

7. The intelligent batch blood sampling device according to claim 6, characterized in that: There are two groups of driving assemblies. One end of the fixing plate is connected to the nut in one group of driving assemblies, and the other end of the fixing plate is connected to the nut in the other group of driving assemblies.

8. The intelligent batch blood sampling device according to claim 1, characterized in that: The catheter includes a main tube and at least two branch tubes. The puncture needle is arranged at the end of the branch tube away from the main tube. The number of stepped hole grooves is the same as the number of branch tubes. The number of mounting grooves in the same column on the mounting seat is the same as the number of branch tubes.

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