Bilirubin concentration detection device

Abstract

The invention relates to the technical field of bilirubin concentration detection, and mainly relates to a bilirubin concentration detection device, which comprises suction tubes for sucking serum, a storage frame and an operation tube, the storage frame is used for storing a plurality of suction tubes, the operation tube is provided with a butt joint port, and the butt joint end of the butt joint port and the storage frame is provided with a butt joint part. According to the bilirubin concentration detection device, a traditional serum collection mode during bilirubin concentration detection is optimized, the designed negative pressure adsorption assembly and the suction pipes are matched with each other, absorption and storage of upper-layer serum are achieved, the concentration of the bilirubin is detected, the concentration of the bilirubin is detected, the concentration of the bilirubin is detected, the concentration of the bilirubin is detected, and the concentration of the bilirubin is detected. Compared with the traditional mode that the serum needs to be transferred immediately after being sucked by a suction tube, the serum extraction device has the advantages that a worker can extract all serum in batches at one time, and serum pollution caused by the fact that the suction tube is forgotten to be replaced and the suction tube is in contact with the outside can be effectively avoided in the operation process.

Description

Technical Field

[0001] The present invention relates to the technical field of bilirubin concentration detection, in particular to a bilirubin concentration detection device. Background Art

[0002] Bilirubin is the main pigment in bile and is orange-yellow in color. Its main source is the decomposition of hemoglobin in aging red blood cells. The level of bilirubin can reflect the health of the liver, gallbladder, and red blood cells. Clinically, it is often used as an important indicator for diagnosing liver diseases, hemolytic diseases, and neonatal jaundice.

[0003] An existing method for testing bilirubin concentration involves collecting peripheral blood by venipuncture. The collected blood sample is then allowed to stand or coagulate before being spun in a centrifuge at high speed (usually 3,000-4,000 rpm for 5-10 minutes). Centrifugal force is used to separate components of different densities into separate layers. The upper layer of serum is then carefully aspirated using a pipette or straw. The collected serum sample is then reacted with a diazo reagent or bilirubin oxidase to detect the bilirubin concentration. When aspirating batches of serum samples, multiple disposable straws are required. After aspirating the serum, it is transferred to a target container. Since the serum is in the straw without a sealing measure, it needs to be quickly transferred to the target container, and then a new straw is replaced for the next round of serum extraction. During batch testing, personnel need to frequently aspirate and transfer, which can easily lead to errors in operation, such as forgetting to change the straw or the straw coming into contact with the outside world during the transfer process, increasing the risk of serum contamination. Summary of the Invention

[0004] The object of the present invention is to provide a bilirubin concentration detection device to solve the problem of serum susceptibility to infection caused by the need to transfer serum during the serum absorption process during bilirubin concentration detection proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bilirubin concentration detection device, comprising a suction tube for serum absorption, a storage frame and an operating tube, the storage frame being used to store a plurality of suction tubes, the operating tube being provided with a docking port, and the docking port and the docking end of the storage frame being provided with a docking portion, the storage frame being provided with a pushing portion for moving the plurality of suction tubes into the operating tube, and a push-down assembly being provided in the operating tube, the suction tube in the operating tube being pushed down by the push-down assembly, the bottom end of the suction tube being provided with a limiting portion, the outside of the suction tube being provided with a negative pressure adsorption assembly, and the negative pressure adsorption assembly being adapted to the push-down assembly.

[0006] Preferably, the push-down assembly includes a push-down plate arranged in the operating tube, a connecting rod is fixed on the push-down plate, a pressing plate is fixed on the connecting rod, a moving opening is opened on the outside of the operating tube, and a docking plate adapted to the moving opening is fixed on the push-down plate, a reset member for driving the push-down plate to move up and reset is installed in the moving opening, a handle for human hand holding is fixed on the outside of the operating tube, a connecting spring is fixed on the bottom of the push-down plate, and a fitting plate is fixed on the outer end of the connecting spring.

[0007] Preferably, the reset member includes a reset tension spring, and both ends of the reset tension spring are respectively fixed to the docking plate and the inner wall of the top of the movable opening.

[0008] Preferably, the negative pressure adsorption component includes a docking seat fixed on the outside of the operating tube, a negative pressure plate is rotatably installed in the docking seat, and a pressing arc rod is fixed in the negative pressure plate, the pressing arc rod slides through the storage frame and the operating tube, and is pressed against the outside of the suction tube in the operating tube, a spring sheet is fixed on the outer wall of the operating tube, and a linkage part compatible with the negative pressure plate and the docking plate is installed on the outside of the operating tube.

[0009] Preferably, the linkage part includes a linkage rod that is slidably plugged into the outer wall of the operating tube, one end of the linkage rod is in contact with the outer side of the negative pressure plate, and the other end is fixed with a linkage plate, and the docking plate moves downward to squeeze the linkage plate to achieve pressing on the negative pressure plate.

[0010] Preferably, a pressing plate is rotatably mounted on the outer side of the pressing plate, and a stopper adapted to the pressing plate is fixed on the operating tube.

[0011] Preferably, the docking portion includes a docking concave plate arranged at the docking interface, a docking strip adapted to the docking concave plate is fixed to the outside of the storage frame, a support frame is fixed on the docking concave plate, and an insertion rod is fixed inside the support frame, a limiting hole is provided on the storage frame, a limiting column adapted to the limiting hole is slidably inserted on the insertion rod, a pull plate is fixed to the outside of the limiting column, and adjacent ends of the limiting column and the support frame are provided with mutually repelling magnetic blocks.

[0012] Preferably, the suction tube consists of a tube body, a suction nozzle, and a sealing tube. The bottom of the tube body is fixedly connected to the suction nozzle, and end plates are fixed at both ends of the tube body. The sealing tube is threadedly connected to the bottom of the tube body, and a sealing plug that matches the suction nozzle is fixed in the sealing tube.

[0013] Preferably, the limiting portion includes an end ring fixed to the bottom of the operating tube, a plurality of movable holes are opened at equal angles on the bottom of the operating tube, and a limiting ball is slidably inserted into the movable hole, and both ends of the movable hole are provided with an inner buckle that fits with the outer side of the limiting ball, the outer side of the operating tube is slidably sleeved with a limiting ring, and an extrusion spring is provided between the limiting ring and the end ring.

[0014] Preferably, the pushing portion includes a pushing plate arranged in the storage frame, the pushing plate is in contact with the inner wall of the storage frame, a pushing spring fixed to the pushing plate is fixed in the storage frame, and a limiting strip adapted to the end plate is fixed in the storage frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention optimizes the traditional serum collection method for bilirubin concentration detection, and utilizes the designed negative pressure adsorption component to cooperate with the suction tube to achieve the absorption and storage of the upper layer of serum. Compared with the traditional method of sucking with a straw, which requires immediate transfer, personnel can extract all the serum in batches at one time, without having to transfer the serum each time it is extracted. During the operation, it can effectively avoid the occurrence of serum contamination caused by forgetting to replace the straw and the straw contacting the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic structural diagram of the present invention from another angle;

[0019] Figure 3 This is a schematic diagram of the storage frame and the operating tube of the present invention in a disassembled state;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a front view of the operating tube of the present invention;

[0022] Figure 6 It is a partial cross-sectional rear side view of the operating tube of the present invention;

[0023] Figure 7 This is an enlarged view of point B in 6;

[0024] Figure 8 This is a schematic diagram of the internal structure of the storage frame of the present invention after partial cross-section;

[0025] Figure 9 It is a schematic diagram of the suction tube structure in the present invention.

[0026] Figure: 1, suction tube; 2, storage frame; 3, operation tube; 4, docking part; 5, pushing part; 6, push-down assembly; 7, limit part; 8, negative pressure adsorption assembly; 9, push-down plate; 10, connecting rod; 11, pressing plate; 12, moving mouth; 13, docking plate; 14, reset part; 15, reset tension spring; 16, docking seat; 17, negative pressure plate; 18, pressing arc rod; 19, spring sheet; 20, linkage part; 21, linkage rod; 22, linkage plate; 2 3. Pressing plate; 24. Docking concave plate; 25. Docking strip; 26. Support frame; 27. Insert rod; 28. Limiting hole; 29. ​​Limiting column; 30. Tube body; 31. Suction nozzle; 32. Sealing tube; 33. End plate; 34. Sealing plug; 35. End ring; 36. Moving hole; 37. Limiting ball; 38. Limiting ring; 39. Extrusion spring; 40. Pushing plate; 41. Pushing spring; 42. Limiting strip; 43. Connecting spring; 44. Laminating plate. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: Please refer to Figure 1 - Figure 3 The bilirubin concentration detection device shown in the figure includes a suction tube 1 for serum aspiration, a storage frame 2 and an operating tube 3. The storage frame 2 is used to store a plurality of suction tubes 1. The operating tube 3 is provided with a docking port. The docking port and the storage frame 2 are provided with a docking portion 4 at the docking end. The storage frame 2 is provided with a pushing portion 5 for moving the plurality of suction tubes 1 into the operating tube 3, and a push-down assembly 6 is provided in the operating tube 3. The suction tube 1 in the operating tube 3 is pushed down by the push-down assembly 6. A limiting portion 7 is provided at the bottom end of the suction tube 1. A negative pressure adsorption assembly 8 is provided on the outside of the suction tube 1. The negative pressure adsorption assembly 8 is adapted to the push-down assembly 6.

[0029] In this solution, several suction tubes 1 are pre-installed in the storage frame 2, and then the storage frame 2 is docked with the operating tube 3. The personnel operates the push-down component 6 to push the suction tube 1 in the operating tube 3 down to the working position, and then contacts the upper serum in the separated blood sample, and uses the negative pressure adsorption component 8 to adsorb the serum. After the adsorption is completed, the serum is sealed and stored in the suction tube 1. The personnel opens the limit part 7, removes the suction tube 1 from the bottom of the operating tube 3, and pushes the next suction tube 1 into the operating tube 3 through the pushing part 5 to carry out the next round of serum extraction, so that the personnel can extract a batch of serum at one time, thereby reducing errors during the operation process and avoiding serum contamination.

[0030] In this proposal, see Figure 9 The suction tube 1 is composed of a tube body 30, a suction nozzle 31, and a sealing tube 32. The bottom of the tube body 30 is fixedly connected to the suction nozzle 31. End plates 33 are fixed at both ends of the tube body 30. The sealing tube 32 is threadedly connected to the bottom of the tube body 30. A sealing plug 34 that matches the suction nozzle 31 is fixed in the sealing tube 32.

[0031] It should be noted that the tube body 30 itself is elastic. The negative pressure adsorption component 8 is used to squeeze the outer side of the tube body 30, making its shape concave. When the tube body 30 recovers its elasticity, suction will be generated inside, thereby sucking the serum into the suction nozzle 31. After the absorption is completed, the sealing tube 32 is threadedly connected, and the sealing plug 34 is used to plug the outer end of the sealing tube 32 to achieve a sealing effect.

[0032] For further information, see Figure 1 - Figure 3 as well as Figure 5 and Figure 6 The push-down assembly 6 includes a push-down plate 9 arranged in the operating tube 3, a connecting rod 10 is fixed on the push-down plate 9, and a pressing plate 11 is fixed on the connecting rod 10. A moving opening 12 is opened on the outside of the operating tube 3, and a docking plate 13 adapted to the moving opening 12 is fixed on the push-down plate 9. A reset member 14 for driving the push-down plate 9 to move upward and reset is installed in the moving opening 12. A handle for human hand holding is fixed on the outside of the operating tube 3. A connecting spring 43 is fixed to the bottom of the push-down plate 9, and a fitting plate 44 is fixed to the outer end of the connecting spring 43;

[0033] The reset member 14 includes a reset tension spring 15 , and two ends of the reset tension spring 15 are respectively fixed to the docking plate 13 and the inner wall of the top of the moving opening 12 .

[0034] In this solution, the principle of moving the suction tube 1 downward in the operating tube 3 is realized by using the push-down assembly 6:

[0035] First, use the pushing part 5 to push a suction tube 1 into the operating tube 3. Then, the operator holds the handle and presses the pressing plate 11 with the thumb and presses it down, driving the connecting rod 10 to move downward, so that the laminating plate 44 squeezes the suction tube 1 downward and makes the bottom of the suction tube 1 abut against the limit part 7, so that the suction tube 1 reaches the suction state.

[0036] After the suction operation is completed, the operator releases the pressing plate 11 and, under the action of the reset spring 15 , pulls the push plate 9 upward, so that the pressing plate 11 is reset, making it easier to connect the next suction tube 1 .

[0037] It should also be noted that an arc-shaped baffle is fixed to the outside of the push-down plate 9, which fits into the outside of the suction tube 1, so that when the suction tube 1 in the operating tube 3 is pushed down, the suction tube 1 in the storage frame 2 will not collide with the suction tube 1 in the operating tube 3.

[0038] For further information, see Figure 1 - Figure 3 as well as Figure 5 and Figure 6 The negative pressure adsorption component 8 includes a docking seat 16 fixed to the outside of the operating tube 3, a negative pressure plate 17 is rotatably installed in the docking seat 16, a pressing arc rod 18 is fixed in the negative pressure plate 17, the pressing arc rod 18 slides through the storage frame 2 and the operating tube 3, and abuts against the outside of the suction tube 1 in the operating tube 3. A spring sheet 19 is fixed to the outer wall of the operating tube 3, and a linkage member 20 adapted to the negative pressure plate 17 and the docking plate 13 is installed on the outside of the operating tube 3;

[0039] The linkage member 20 includes a linkage rod 21 that is slidably connected to the outer wall of the operating tube 3. One end of the linkage rod 21 is in contact with the outer side of the negative pressure plate 17, and the other end is fixed with a linkage plate 22. The docking plate 13 moves downward to squeeze the linkage plate 22, thereby pressing the negative pressure plate 17.

[0040] In this solution, the principle of the push-down component 6 driving the negative pressure adsorption component 8 to perform adsorption operation is used;

[0041] First, the personnel operates the push-down assembly 6 to push the suction tube 1 down to the working position, and then opens the sealing tube 32. The personnel continues to press the pressing plate 11 to make the pushing plate 9 continue to move down, and the connecting spring 43 is squeezed. At the same time, the pushing plate 9 drives the docking plate 13 to move down and resist against the linkage plate 22, and drives the linkage plate 22 to move down, so that the linkage rod 21 moves down, squeezing the negative pressure plate 17, thereby driving the two pressing arc rods 18 to squeeze the tube body 30, and then moves the suction nozzle 31 to the serum. At this time, the personnel slowly relaxes the pressing plate 11, and under the action of the spring sheet 19, the negative pressure plate 17 and the pressing arc rod 18 are slowly reset and separated from the tube body 30. The tube body 30 begins to rebound by its own elasticity, thereby generating negative pressure inside to adsorb the serum. After the adsorption is completed, the personnel covers the sealing tube 32 to complete the absorption and sealed storage operation of the serum, which is convenient for all the serum to be adsorbed at one time.

[0042] For further information, see Figure 6 and Figure 7 The limiting part 7 includes an end ring 35 fixed to the bottom of the operating tube 3. A plurality of movable holes 36 are opened at equal angles on the bottom of the operating tube 3. A limiting ball 37 is slidably inserted into the movable hole 36. Both ends of the movable hole 36 are provided with an inner buckle that fits with the outer side of the limiting ball 37. A limiting ring 38 is slidably sleeved on the outer side of the operating tube 3. An extrusion spring 39 is provided between the limiting ring 38 and the end ring 35.

[0043] In this solution, the extrusion spring 39 is used to generate a spring to drive the limit ring 38 to move downward, squeezing the limit ball 37 so that the outer side of the limit ball 37 moves to the inner side of the operating tube 3 and abuts against the end plate 33 on the suction tube 1, completing the limiting operation of the suction tube 1. After completing the absorption of serum, the personnel can pull up the limit ring 38 to cancel the limit on the outer side of the limit ball 37. The personnel can then pull out the suction tube 1 to complete the disassembly of the suction tube 1 after absorbing serum, making it convenient for the next round of serum absorption.

[0044] For further information, see Figure 8 The pushing portion 5 includes a pushing plate 40 disposed in the storage frame 2. The pushing plate 40 is in contact with the inner wall of the storage frame 2. A pushing spring 41 fixed to the pushing plate 40 is fixed in the storage frame 2. A limiting strip 42 adapted to the end plate 33 is fixed in the storage frame 2.

[0045] It should be noted that the limit strip 42 is in contact with the end plate 33, so that the aspiration tube 1 is more stable when moving in the storage frame 2. At the same time, with the help of the push spring 41 and the push plate 40, several aspiration tubes 1 can be discharged outward, which is more convenient when aspirating serum in batches.

[0046] For further information, see Figure 3 and Figure 4The docking portion 4 includes a docking concave plate 24 provided at the docking interface, a docking strip 25 adapted to the docking concave plate 24 is fixed to the outside of the storage frame 2, a support frame 26 is fixed on the docking concave plate 24, an insertion rod 27 is fixed in the support frame 26, a limiting hole 28 is provided on the storage frame 2, and a limiting column 29 adapted to the limiting hole 28 is slidably inserted on the insertion rod 27. The outer end of the limiting column 29 is a hemispherical structure, a pull plate is fixed to the outside of the limiting column 29, and adjacent ends of the limiting column 29 and the support frame 26 are provided with mutually repelling magnetic blocks;

[0047] In this solution, when docking the storage frame 2 and the operating tube 3, the operator first inserts the storage frame 2 into the docking port from top to bottom. During the docking, the docking strips 25 are plugged into the docking recessed plate 24. During the plugging process, the limiting posts 29 are pushed open. After the insertion is completed, the limiting posts 29 are repelled and plugged into the limiting holes 28 on the storage frame 2, completing the docking of the storage frame 2.

[0048] When disassembling the storage frame 2 , it is only necessary to pull the pull plate outward to drive the limiting pillars 29 to move outward and disengage from the limiting holes 28 . Then, the person moves upward to remove the storage frame 2 .

[0049] In this protocol, the specific operation of serum extraction for bilirubin concentration detection includes the following steps:

[0050] In the first step, the collected blood sample is left to stand for 15 minutes or until it coagulates;

[0051] In the second step, the blood sample is spun at high speed in a centrifuge (3000-4000 rpm for 5-10 minutes) to obtain a stratified blood sample;

[0052] In the third step, the operator holds the handle and aligns the aspiration tube 1 in the operating tube 3 with the upper layer of serum, and uses the negative pressure adsorption component 8 to squeeze the aspiration tube 1 to aspirate the serum;

[0053] Step 4: Seal the suction tube 1 and remove it, and use the pushing part 5 to push the new suction tube 1 into the operating tube 3;

[0054] Step 5: Repeat steps 3 and 4 until all the pipettes 1 in the storage frame 2 are used up. The staff then opens the docking portion 4, removes the storage frame 2, loads new pipettes 1, and installs the storage frame 2 to continue pipetting serum until the batch pipetting operation is completed.

[0055] In this solution, the designed suction tube 1 and the related structure for pushing down and squeezing the suction tube 1 are used to complete the adsorption and storage operations of the serum using the suction tube 1, so that when personnel are processing and sucking serum in batches, they can only perform the serum sucking step at one time without transferring the serum. Compared with the traditional straw suction method, this avoids straw infection during the transfer process and serum contamination caused by operational errors.

[0056] Example 2: Please refer to Figure 5 as well as Figure 6 This embodiment further explains the first embodiment, and the difference lies in that the operation of the button 11 is optimized.

[0057] Specifically, a pressing plate 23 is rotatably mounted on the outer side of the pressing plate 11 , and a stopper adapted to the pressing plate 23 is fixed on the operating tube 3 .

[0058] In this solution, after pushing the suction tube 1 down to the working position, the personnel need to remove the sealing tube 32 at the bottom of the suction tube 1. At this time, the personnel can rotate the pressing plate 23 to abut against the block to prevent the pressing plate 11 from moving up.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A bilirubin concentration detection device, characterized in that: include: a pipette (1) for serum aspiration, and; A storage frame (2) and an operating tube (3), wherein the storage frame (2) is used to store a plurality of suction tubes (1), the operating tube (3) is provided with a docking port, and a docking portion (4) is provided at the docking port and the docking end of the storage frame (2), and a pushing portion (5) is provided in the storage frame (2) for moving the plurality of suction tubes (1) into the operating tube (3), and; A push-down assembly (6) is provided in the operating tube (3), and the suction tube (1) in the operating tube (3) is pushed downward by the push-down assembly (6). A limiting portion (7) is provided at the bottom end of the suction tube (1), and a negative pressure adsorption assembly (8) is provided on the outside of the suction tube (1), and the negative pressure adsorption assembly (8) is adapted to the push-down assembly (6).

2. A bilirubin concentration detection device according to claim 1, characterized in that: The push-down assembly (6) includes a push-down plate (9) arranged in the operating tube (3), a connecting rod (10) is fixed on the push-down plate (9), and a pressing plate (11) is fixed on the connecting rod (10), a moving opening (12) is opened on the outside of the operating tube (3), and a docking plate (13) adapted to the moving opening (12) is fixed on the push-down plate (9), a reset member (14) for driving the push-down plate (9) to move upward and reset is installed in the moving opening (12), a handle for human hand holding is fixed on the outside of the operating tube (3), a connecting spring (43) is fixed at the bottom of the push-down plate (9), and a fitting plate (44) is fixed to the outer end of the connecting spring (43).

3. A bilirubin concentration detection device according to claim 2, characterized in that: The reset member (14) includes a reset tension spring (15), and two ends of the reset tension spring (15) are respectively fixed to the docking plate (13) and the top inner wall of the moving opening (12).

4. A bilirubin concentration detection device according to claim 1, characterized in that: The negative pressure adsorption assembly (8) includes a docking seat (16) fixed on the outside of the operating tube (3), a negative pressure plate (17) is rotatably installed in the docking seat (16), and a pressing arc rod (18) is fixed in the negative pressure plate (17), the pressing arc rod (18) slides through the storage frame (2) and the operating tube (3), and abuts against the outside of the suction tube (1) in the operating tube (3), a spring sheet (19) abutting against the negative pressure plate (17) is fixed to the outer wall of the operating tube (3), and a linkage member (20) adapted to the negative pressure plate (17) and the docking plate (13) is installed on the outside of the operating tube (3).

5. A bilirubin concentration detection device according to claim 4, characterized in that: The linkage member (20) includes a linkage rod (21) that is slidably plugged into the outer wall of the operating tube (3). One end of the linkage rod (21) is in contact with the outer side of the negative pressure plate (17), and the other end is fixed with a linkage plate (22). The docking plate (13) moves downward to squeeze the linkage plate (22), thereby pressing the negative pressure plate (17).

6. A bilirubin concentration detection device according to claim 2, characterized in that: A pressing plate (23) is rotatably mounted on the outer side of the pressing plate (11), and a stopper adapted to the pressing plate (23) is fixed on the operating tube (3).

7. A bilirubin concentration detection device according to claim 1, characterized in that: The docking portion (4) includes a docking concave plate (24) arranged at the docking interface, a docking strip (25) adapted to the docking concave plate (24) is fixed on the outside of the storage frame (2), a support frame (26) is fixed on the docking concave plate (24), and an insertion rod (27) is fixed inside the support frame (26), a limiting hole (28) is provided on the storage frame (2), a limiting column (29) adapted to the limiting hole (28) is slidably inserted on the insertion rod (27), a pull plate is fixed on the outside of the limiting column (29), and adjacent ends of the limiting column (29) and the support frame (26) are provided with mutually repelling magnetic blocks.

8. A bilirubin concentration detection device according to claim 1, characterized in that: The suction tube (1) consists of a tube body (30), a suction nozzle (31), and a sealing tube (32). The bottom of the tube body (30) is fixedly connected to the suction nozzle (31), and end plates (33) are fixed at both ends of the tube body (30). The sealing tube (32) is threadedly plugged into the bottom of the tube body (30), and a sealing plug (34) adapted to the suction nozzle (31) is fixed inside the sealing tube (32).

9. A bilirubin concentration detection device according to claim 1, characterized in that: The limiting portion (7) comprises an end ring (35) fixed to the bottom of the operating tube (3); a plurality of movable holes (36) are provided at equal angles on the bottom of the operating tube (3); and a limiting ball (37) is slidably inserted into the movable hole (36); both ends of the movable hole (36) are provided with inner buckles that fit with the outer side of the limiting ball (37); a limiting ring (38) is slidably sleeved on the outer side of the operating tube (3), and a compression spring (39) is provided between the limiting ring (38) and the end ring (35).

10. A bilirubin concentration detection device according to claim 1, characterized in that: The pushing portion (5) includes a pushing plate (40) disposed in the storage frame (2), the pushing plate (40) being in contact with the inner wall of the storage frame (2), a pushing spring (41) fixed to the pushing plate (40) being fixed in the storage frame (2), and a limiting strip (42) adapted to the end plate (33) being fixed in the storage frame (2).

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