Intelligent batch blood sampling device

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an intelligent batch blood sampling device which comprises a bottom plate, a liftable puncture needle frame and a mounting seat capable of sliding horizontally are arranged on the bottom plate, puncture needles are detachably fixed to the puncture needle frame, and a driving assembly used for driving the puncture needle frame to ascend and descend is arranged on the bottom plate. The driving assembly comprises a servo motor, a transmission assembly is arranged between the mounting base and the servo motor, and the transmission assembly comprises a driving gear, a driven outer gear ring, a one-way bearing, a driven sector gear and a rack, so that sliding of the mounting base is achieved at a specific stage, and then automatic replacement of the blood collection tubes is achieved; a nurse can conveniently fix the blood taking needle on a patient to avoid needle falling; a controller and a mounting groove for placing a blood collection tube are arranged on the mounting seat, a non-contact liquid level sensor is arranged in the mounting groove, and the controller controls the servo motor to work according to a signal received from the non-contact liquid level sensor, so that the blood collection amount is monitored, and the situation that the blood collection amount is too small or too large is avoided.

Description

Technical Field

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

[0002] Blood test is the most general and basic blood test. It refers to the examination of anemia, cholesterol, diabetes, various infections, kidney function, liver function, blood diseases and physical abnormalities in the human body through blood analysis. It is one of the most common laboratory tests in hospitals. Because there are many examination items, and different examination items have different requirements for blood tests, such as blood routine, coagulation function test, erythrocyte sedimentation rate, etc., need to use whole blood plus different coagulants for examination, and biochemistry (liver function, blood sugar, blood lipids, etc.) requires separation of serum. Therefore, nurses often collect multiple tubes of blood from patients when they undergo blood tests.

[0003] Clinically, the blood collection process is as follows: after the nurse inserts the blood collection needle into the patient's vein, the puncture needle is inserted into the blood collection tube. The blood flows into the blood collection tube (vacuum tube) through the catheter (the blood collection needle and the puncture needle are respectively arranged at the two ends of the infusion hose). The nurse visually observes the blood collection volume of the blood collection tube and gently pulls out the blood collection tube when judging that the blood collection volume is sufficient based on experience. After placing it, take a new blood collection tube and insert the puncture needle into the new blood collection tube to start the second blood collection work. Repeat the above operation until the blood collection work of the corresponding number of blood collection tubes is completed. Finally, the blood collection needle is pulled out and the patient's blood collection point is pressed with a cotton swab. In this process, when replacing the collection tube, the nurse needs to operate with both hands: one hand holds the puncture needle and the other hand pulls out / punctures the blood collection tube. The operation is more troublesome and the workload is high. In addition, the nurse cannot fix the blood collection needle at this time, and the blood collection needle may fall off, resulting in interruption of blood collection, requiring a second puncture, which increases the patient's pain. Especially for children, it is more likely to fall off the needle due to restless movement. 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 too little blood being collected and delaying the detection work. Therefore, it is necessary to design a blood collection device that can avoid needle removal and intelligently judge 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 removal of the blood collection needle and too little blood collection in the traditional blood collection process.

[0005] In order to achieve the above-mentioned purpose, the scheme 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 is detachably mounted on the fixed plate, and the detachable plate and the fixed plate are provided with semi-stepped hole grooves on the side walls opposite to each other, and the two semi-stepped 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 with the output end of the servo motor, the driven outer gear ring is fixedly installed on the outer peripheral wall of the one-way bearing, the one-way bearing is coaxially arranged with the driven sector gear, the rack is fixedly installed 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, the mounting seat is detachably provided with a covering plate for covering the mounting grooves, the covering plate is provided with a plurality of through holes for the puncture needle to pass through, the through holes correspond to the notches of the mounting grooves and the aperture of the through holes is smaller than the aperture of the mounting grooves, the bottom of the mounting groove is fixedly provided with an insertion groove for inserting the bottom of the blood collection tube, the groove wall of the mounting groove is fixedly provided with a non-contact liquid level sensor, the mounting seat is provided with a controller, the non-contact liquid level sensor is electrically connected to the controller, and the controller controls the servo motor to work 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 on the puncture needle holder, and the blood collection tube is fixed in the mounting groove of the mounting seat. The puncture needle holder is lifted and lowered under the action of the driving assembly, and the mounting seat is horizontally slid under the action of the transmission assembly, and the transmission assembly only performs the transmission function in the second half of the upward movement of the puncture needle holder. In this way, when the puncture needle holder moves down, the puncture needle pierces the tube plug of the blood collection tube to achieve blood collection. During the process, the non-contact liquid level sensor monitors the blood collection volume. When the blood collection volume is sufficient, the controller controls the drive assembly to work and remove the needle, thereby ending the blood collection work of the blood collection tube. Moreover, after the needle is removed, the driven sector gear meshes with the rack, thereby realizing the automatic sliding of the mounting seat, and the next blood collection tube moves to the bottom of the puncture needle. The puncture needle holder moves down to achieve the collection of 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 hands of nurses. Nurses can fix the blood collection needles on the patients to avoid needle removal. In addition, this solution realizes intelligent monitoring of the blood collection volume to avoid too little or too much blood collection, thus 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 locking nut is rotated so that the locking nut is in close contact with or away from the fixing plate, so that the detachable plate can be disassembled and assembled, thereby fixing or removing the puncture needle, and the operation is convenient, and a new blood collection component is easy to replace.

[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 covering plate toward the side wall of the mounting seat, and the fixing column passes through the mounting hole, thereby realizing the installation of the covering plate, and the operation is simple.

[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, it can ensure that the blood collection volume in the blood collection tube is monitored, avoiding 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 slide groove 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, the other side of the nut of the ball screw pair is fixedly connected to a slider, and a vertical slide groove for sliding 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 through the vertical groove on the slider and the vertical plate.

[0017] Optionally, the number of the drive assemblies is two groups, one end of the fixed plate is connected to the nuts in one group of drive assemblies, and the other end of the fixed plate is connected to the nuts 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 one 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 pierces 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 A top view of an intelligent batch blood sampling device in Embodiment 1 of the present invention;

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

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

[0024] Figure 4 It is a schematic diagram of the structure of the device after the puncture needle is installed on the puncture needle holder and the blood collection tube is installed in the installation groove;

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

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

[0027] Figure 7 It is a left-side partial cross-sectional view of an intelligent batch blood sampling device in Embodiment 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 gear ring 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 1

[0031] This embodiment is basically Figure 1-Figure 4 As shown: an intelligent batch blood collection device, including a blood collection component 1 and a base plate 2. The blood collection component 1 includes a blood collection needle 101, a catheter 102 and a puncture needle 103. The blood collection needle 101 is arranged at one end of the catheter 102 for piercing the patient's vein. The puncture needle 103 is arranged at the other end of the catheter 102 for piercing the blood collection tube 23. A push handle 1031 is provided at the root of the puncture needle 103.

[0032] Combination Figure 1 and Figure 2 As shown, the bottom plate 2 is provided with a liftable puncture needle holder 3 and a horizontally slidable mounting seat 4, the puncture needle holder 3 includes a fixed plate 301 and a removable plate 302, the removable plate 302 is removably mounted on the fixed plate 301, specifically, two connecting screws 303 are welded on the removable plate 302, and the removable plate 302 is provided with a plurality of connecting screws 303. Figure 3 As shown, the fixed plate 301 is provided with a channel 3011 for the connecting screw 303 to pass through, and the connecting screw 303 is threadedly connected with a locking nut 304, and the locking nut 304 is pressed against the fixed plate 301, so that the removable plate 302 is pressed against the fixed plate 301 to achieve the installation of the removable plate 302. The removable plate 302 and the fixed plate 301 have semi-stepped holes 3101 formed on the opposite side walls, and the two semi-stepped holes 3101 are combined to form a stepped hole 310 for fixing the push handle 1031, and the inner diameters of the top and bottom ends of the stepped hole 310 are smaller than the inner diameter of the middle part of the stepped hole 310.

[0033] The bottom plate 2 is provided with a driving assembly for driving the puncture needle holder 3 to rise and fall, and the driving assembly includes a servo motor 5 and a ball screw pair 6. The servo motor 5 is used to drive the screw 601 of the ball screw pair 6 to rotate, and the fixed plate 301 is fixedly connected to the nut 602 of the ball screw pair 6. Moreover, in this embodiment, a vertical plate 7 is welded on the bottom plate 2, and both ends of the screw 601 of the ball screw pair 6 are rotatably mounted on the vertical plate 7 through bearings 8. The nut 602 of the ball screw pair 6 is welded with a slider 9, and a vertical slide groove for the slider 9 to slide is provided on the vertical plate 7. In this way, when the servo motor 5 is working, the screw 601 of the ball screw pair 6 rotates, and 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] Combination Figure 2 and Figure 3As shown, a transmission assembly is provided between the mounting seat 4 and the servo motor 5, and the transmission assembly includes a driving gear 10, a driven outer gear ring 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 gear ring 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 bottom plate 2), the rack 14 is fixedly mounted on the side wall of the mounting seat 4, the driving gear 10 is meshed with the driven outer gear ring 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 seat 4, and a T-shaped slide groove 201 for the T-shaped slider 16 to slide is provided on the bottom plate 2. A plurality of mounting grooves 401 for placing blood collection tubes 23 are provided on the mounting seat 4, and a cover plate 17 for covering the mounting grooves 401 is detachably installed on the mounting seat 4. Specifically, both side edges of the cover plate 17 are hinged with connecting pieces 18 through hinges 1710. Horizontally arranged fixing columns 19 are welded to both side walls of the fixing seat, and the distance between two adjacent fixing columns 19 is 50 mm. A mounting hole for the fixing column 19 to pass through is provided on the connecting piece 18. When the fixing column 19 passes through the corresponding mounting hole, the cover plate 17 can be installed on the mounting seat 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 groove 401 and the aperture of the through holes 1701 is smaller than the notch aperture of the mounting groove 401, the bottom of the mounting groove 401 is fixedly provided with an insertion groove 20 for the bottom of the blood sampling tube 23 to be inserted, the groove wall of the mounting groove 401 is fixedly provided with a non-contact liquid level sensor 21, the mounting seat 4 is fixedly provided with a controller 22, the non-contact liquid level sensor 21 is electrically connected to the controller 22, and the controller 22 controls the servo motor 5 to work according to the signal received from the non-contact liquid level sensor 21.

[0036] When in use, the connecting piece 18 on the cover plate 17 is turned over so that the connecting piece 18 is separated from the fixing column 19. After the cover plate 17 is removed, the blood collection tube 23 is placed in the installation groove 401. At this time, the bottom of the blood collection tube 23 is placed in the placement groove 20 in the installation groove 401. There is a gap between the blood collection tube 23 and the inner peripheral wall of the installation groove 401, which is convenient for the installation of the non-contact liquid level sensor 21 and for the nurse to take the blood collection tube 23 from the installation groove 401. After all the blood collection tubes 23 prepared in advance are installed, the cover plate 17 is placed on the mounting seat 4 again, and the connecting piece 18 is passed through the fixing column 19. The blood collection tube 23 is pressed by the cover plate 17 to fix the blood collection tube 23.

[0037] Then, the locking nut 304 is rotated, the removable plate 302 is pulled to the left, and the puncture needle 103 is placed in the semi-step hole groove 3101 on the fixed plate 301, and the removable plate 302 is pushed back to the right, so that the two semi-step hole grooves 3101 are assembled into a stepped hole groove 310, and finally the locking nut 304 is rotated in the opposite direction, so that the removable plate 302 is close to the fixed plate 301, so that the puncture needle 103 is fixed on the puncture needle holder 3, and the needle tip of the puncture needle 103 faces downward, and the puncture needle 103 is located directly above the corresponding blood collection tube 23, as shown in FIG. 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 downward and pierces the blood collection tube 23, and the venous blood flows into the blood collection tube 23 along the catheter 102. 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 reaches 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 the automatic removal of the puncture needle 103, thereby avoiding excessive or insufficient blood collection.

[0039] In the above process, when the puncture needle holder 3 moves down, the driving gear 10 in the transmission assembly meshes with the driven outer gear ring 11, and the driven outer gear ring 11 rotates clockwise. Due to the presence of the one-way bearing 12, during this process, the roller 15 and the driven sector gear 13 do not rotate accordingly; and when the puncture needle holder 3 moves up, the driving gear 10 rotates clockwise, the driven outer gear ring 11 rotates counterclockwise, and the one-way bearing 12 is locked, thereby driving the driven sector gear 13 to rotate counterclockwise. During the counterclockwise rotation of the driven sector gear 13, when the puncture needle 103 is completely pulled out, the driven sector gear 13 meshes with the rack 14, and the rack 14 drives the mounting seat 4 to slide to the left. After the driven sector gear 13 is separated from the rack 14, the mounting seat 4 is stationary. It should be noted that, during the upward movement and reset process 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, ...), and the sliding distance of the mounting seat 4 just makes the next blood collection tube 23 on the mounting seat 4 move to the right below the puncture needle 103. Then, the servo motor 5 drives the screw rod 601 to rotate counterclockwise again, and the puncture needle holder 3 moves down to start collecting the second tube of blood. The above process is repeated until the collection of multiple tubes of blood is completed.

[0040] After the last tube of blood is collected, the puncture needle holder 3 moves up and resets. After the puncture needle holder 3 resets, the nurse turns off the servo motor 5, pulls out the blood collection needle 101, removes the used puncture needle 103 from the puncture needle holder 3, and throws the blood collection assembly 1 into the medical waste bin. Finally, the cover plate 17 is removed, and the blood collection tube 23 is taken out of the installation slot 401, and is uniformly stored and sent for inspection.

[0041] In summary, in this embodiment, the non-contact liquid level sensor 21 and the controller 22 are used to realize intelligent monitoring of the blood collection volume, so as to avoid excessive or insufficient blood collection, and the blood collection volume is used as a control signal to control the operation of the servo motor 5, and the automatic replacement of the blood collection tube 23 is realized through the transmission component, so as to avoid the nurses from manually replacing the blood collection tubes, reduce the workload of the nurses, and the nurses can hold the blood collection needle 101 by hand during the blood collection process to avoid the problem of needle removal. Moreover, in this embodiment, the lifting and lowering of the puncture needle holder 3 is realized through the drive component, so as to realize the automatic insertion and automatic removal of the puncture needle 103, further improving the automation degree of the device, which is particularly suitable for batch blood collection (multi-tube blood collection).

[0042] Embodiment 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, so as to avoid the label paper on the blood sampling tube 23 (the opaque label paper is pasted on the blood sampling tube 23, occupying about half of the circumference of the blood sampling tube 23) affecting the liquid level monitoring.

[0044] Embodiment 3

[0045] The difference between this embodiment and the first embodiment is that: Figure 6 As shown, in this embodiment, there are two groups of drive assemblies, which are distributed on the left and right sides of the puncture needle holder 3. One end of the fixed plate 301 is connected to the nut 602 in one group of drive assemblies, and the other end of the fixed plate 301 is connected to the nut 602 in the other group of drive assemblies. In this way, both ends of the fixed plate 301 are driven by the drive assembly, the force is balanced, and the lifting is stable. In addition, in this embodiment, there is no need to set the slider 9.

[0046] Embodiment 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 one 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, two puncture needles 103 pierce 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. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know 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 the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment 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 deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the present invention. The protection scope 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 explain the content of the claims.

Claims

1. An intelligent batch blood collection device, comprising a blood collection component and a bottom plate, wherein the blood collection component comprises a blood collection needle, a catheter and a puncture needle, and a push handle is provided at the root of the puncture needle, characterized in that: The bottom 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 removable plate, the removable plate is 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 step hole groove for fixing the push handle; the bottom plate is provided with a driving assembly for driving the puncture needle holder to rise and fall, 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, 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 is coaxially arranged with the driven sector gear, 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 covering plate for covering the mounting grooves is detachably mounted on the mounting seat, and a plurality of through holes for the puncture needle to pass through are arranged on the covering plate, the through holes correspond to the notches of the mounting grooves and the aperture of the through holes is smaller than the aperture of the mounting grooves, an insertion groove for inserting the bottom of the blood collection tube is fixedly mounted on the bottom of the mounting groove, 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, and 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 bottom plate, 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, and a vertical slide groove for the slider to slide 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 comprises a main tube and at least two branch tubes, the puncture needle is arranged at one 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 row on the mounting seat is the same as the number of branch tubes.

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