Blood collection tube bar code scanning device

Abstract

The utility model relates to a blood collection tube bar code scanning device, which comprises a base, a code scanning structure, a placement frame and a detection piece, the base is provided with a placing area with a moving track, and the two ends of the moving track are a starting position and an ending position respectively. The code scanning structure is installed on the base and located on one side of the placing area. The placing frame is provided with a plurality of placing spaces which are distributed at intervals and configured to expose bar codes of blood collection tubes, the placing frame is movably installed to the placing area from the starting position to the ending position, the plurality of placing spaces correspond to the code scanning structure in sequence, and the placing frame is provided with a plurality of matching parts which are matched with the code scanning structure when the placing frame is installed in the placing area. The plurality of storage spaces are arranged on the sides, close to the initial position, of the plurality of storage spaces in a one-to-one correspondence manner; and the detection piece is arranged on the base and corresponds to the initial position, so that the detection piece can be switched to an opening state when corresponding to the placing frame and can be switched to a closing state when corresponding to the code scanning structure. The utility model aims to solve the problems of low efficiency and high error rate of manual bar code input operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a blood collection tube barcode scanning device. Background Technology

[0002] In in vitro diagnostic equipment, it is often necessary to insert multiple blood collection tubes at once, and then the equipment will take samples from the multiple blood collection tubes in sequence.

[0003] The input of blood collection tube barcodes is mostly done manually by sequentially scanning multiple blood collection tubes onto the scanning structure, which is inefficient and prone to errors. Utility Model Content

[0004] Based on the above description, this utility model provides a blood collection tube barcode scanning device to solve the problems of low efficiency and error-proneness of manual barcode entry.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A blood collection tube barcode scanning device includes: a base, a scanning structure, a placement rack, and a detection component;

[0007] The base is provided with a placement area, the placement area has a movement trajectory, and the two ends of the movement trajectory are respectively set as the start position and the end position;

[0008] The scanning structure is installed on the base, located on one side of the placement area, and close to the starting position;

[0009] The placement frame has multiple spaced placement spaces, which are configured to display the barcode of the blood collection tube. The placement frame is installed in the placement area from the starting position to the ending position according to the movement trajectory, so that the multiple placement spaces correspond to the scanning structure in sequence. The placement frame has multiple mating parts, which are respectively provided on the side of the multiple placement spaces near the starting position when the placement frame is installed in the placement area.

[0010] The detection element is disposed on the base and corresponds to the starting position, so as to switch to the open state when corresponding to the placement rack, and to switch to the closed state when corresponding to the scanning structure.

[0011] Based on the above technical solution, the present invention can be further improved as follows:

[0012] Furthermore, the blood collection tube barcode scanning device also includes a guide rail and a slider. The extension direction of the guide rail is the same as the movement trajectory and is located in the placement area. The slider is slidably connected to the guide rail and is connected to the lower end of the placement frame.

[0013] Furthermore, the guide rails are configured as multiple rails, which are arranged along the distribution direction of the scanning structure and the placement area;

[0014] The placement rack is configured in multiple ways, and each of the multiple placement racks is configured in a one-to-one correspondence with a multiple of the guide rails;

[0015] The slider is configured as a plurality of sliders, and the plurality of sliders are installed one-to-one on the lower end of the plurality of placement racks.

[0016] Furthermore, the plurality of guide rails extend along the length direction of the base, and the plurality of guide rails are distributed along the width direction of the base.

[0017] Furthermore, the guide rail has a guide groove that extends through the length of the base, and the sidewall of the guide groove is provided with a protrusion that extends along the length of the base.

[0018] The slider has a recessed groove that extends along the length of the base and passes through the slider. The groove slides in conjunction with the protrusion.

[0019] Furthermore, the length of the slider is the same as the length of the guide rail.

[0020] Furthermore, the blood collection tube barcode scanning device also includes a micro switch, which is disposed in the guide groove of the guide rail and located at the starting position.

[0021] Furthermore, the detection element is configured as the through-beam transmitter of the through-beam sensor;

[0022] The base is also provided with a through-beam receiver, which is distributed opposite to the through-beam transmitter on both sides of the placement area.

[0023] The mating part is configured as a through groove.

[0024] Furthermore, the blood collection tube barcode scanning device also includes a photoelectric sensor, which is located on the base and near the termination position. The photoelectric sensor includes a photoelectric transmitter and a photoelectric receiver.

[0025] The placement frame is equipped with a mating block, which is positioned between the photoelectric transmitter and the photoelectric receiver when the placement frame is installed in the placement area.

[0026] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0027] The placement rack is movably installed in the placement area, such that the multiple openings sequentially correspond to the scanning structure. As the placement rack moves, the scanning structure sequentially collects the barcodes exposed from the multiple openings. Operation is simple and reliable; automatic scanning can be completed by manually pushing the rack in. The structure is simple and occupies little space.

[0028] During the installation of the placement rack into the placement area, the detection element first detects the placement rack, causing the scanning structure to switch to the open state, and the scanning structure scans the barcode on the placement rack. As the placement rack continues to be pushed in, the detection element aligns with the mating part located on the placement rack, causing the scanning structure to switch to the closed state and stop scanning. At this time, the detection element corresponds to the first mating part, representing the first blood collection tube. Continuing to push the placement rack, the detection element detects the placement rack again, causing the scanning structure to switch to the open state again, and the barcode on the second blood collection tube is scanned and recorded. Similarly, when the detection element detects the corresponding mating part again, the scanning structure switches to the closed state again, representing the second blood collection tube. This process completes the scanning and recording of all blood collection tubes. Accurate recording of blood collection tubes while scanning barcodes facilitates data entry personnel's checking and error correction. Attached Figure Description

[0029] Figure 1 A schematic diagram of an embodiment of a blood collection tube barcode scanning device provided by this utility model;

[0030] Figure 2 A schematic diagram of another embodiment of a blood collection tube barcode scanning device provided for this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the placement rack in an embodiment of this utility model.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Base; 11. Placement area; 2. Scanning structure; 3. Placement rack; 31. Placement space; 311. Placement slot; 32. Mating part; 321. Through slot; 33. Opening; 34. Mating block; 35. Handle; 4. Detection component; 41. Through-beam transmitter; 42. Through-beam receiver; 5. Guide rail; 51. Guide groove; 52. Protrusion; 6. Slider; 61. Slot; 7. Micro switch; 8. Photoelectric sensor; 81. Photoelectric transmitter; 82. Photoelectric receiver; 9. Identification component; a. Blood collection tube. Detailed Implementation

[0034] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be more thorough and complete.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0036] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0037] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0038] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0039] Please refer to Figures 1 to 3This utility model provides a blood collection tube barcode scanning device, including a base 1, a scanning structure 2, a placement rack 3, and a detection element 4; the base 1 has a placement area 11; the placement area 11 has a movement trajectory, the two ends of the movement trajectory are respectively set as a start position and an end position; the scanning structure 2 is installed on the base 1 and located on one side of the placement area 11; the placement rack 3 has a plurality of spaced placement spaces 31, the plurality of placement spaces 31 are configured to expose the barcode of the blood collection tube a, and the placement rack 3 moves from the start position to the end position along the movement trajectory. The position is movably installed to the placement area 11 towards the termination position, so that multiple placement spaces 31 correspond sequentially to the scanning structure 2. The placement frame 3 is provided with multiple mating parts 32, which are respectively provided on the side of multiple placement spaces 31 near the starting position when the placement frame 3 is installed in the placement area 11. The detection element 4 is provided on the base 1 and corresponds to the starting position, so that it switches to the open state when corresponding to the placement frame 3 and switches to the closed state when corresponding to the scanning structure 2.

[0040] In this utility model, reference is made to Figure 1 This document defines the front, back, left, and right directions of the base 1, and uses these directions as a reference to explain some embodiments of the present invention. It should be noted that the front, back, left, and right directions of the base 1 do not constitute a limitation on the following embodiments of the present invention.

[0041] In this embodiment, the placement rack 3 is movably installed in the placement area 11 from back to front, so that multiple placement spaces 31 correspond sequentially to the scanning structure 2. As the placement rack 3 moves, the scanning structure 2 sequentially collects the barcodes exposed from the multiple placement spaces 31. The operation is simple and reliable; automatic scanning can be completed by manually pushing it in. The structure is simple and occupies little space.

[0042] During the installation of the placement rack 3 into the placement area 11, the detection element 4 first detects the placement rack 3, causing the scanning structure 2 to switch to the open state. The scanning structure 2 scans the barcode on the blood collection tube a located at the front end of the placement rack 3. As the placement rack 3 continues to be pushed forward, the detection element 4 corresponds to the mating part 32 located at the front end of the placement rack 3, causing the scanning structure 2 to switch to the closed state and stop scanning. At this time, the detection element 4 corresponds to the first mating part 32, representing the first blood collection tube a. Continuing to push the placement rack 3 forward, the detection element 4 detects the placement rack 3 again, causing the scanning structure 2 to switch to the open state again. The barcode on the second blood collection tube a from the front is scanned and recorded. Similarly, when the detection element 4 detects the corresponding mating part 32 again, the scanning structure 2 switches to the closed state again, representing the second blood collection tube a. This process completes the scanning and recording of all blood collection tubes a. Accurate recording of blood collection tubes a while scanning barcodes facilitates data entry personnel's checking and error correction.

[0043] It should be noted that the blood collection tube barcode scanning device also includes a circuit board assembly, which is electrically connected to the scanning structure 2 and the detection element 4.

[0044] Furthermore, the pushing speed of the placement rack 3 can be detected by the frequency at which the multiple mating parts 32 are detected. When the detected frequency is greater than a set value, the barcode scanning structure 2 reports an error and prompts the user to exit the placement rack 3 and push it in again.

[0045] It should be noted that the error reporting of the scanning structure 2 can be triggered by either an indicator light illuminating or by a sound transmitter. Both indicator light and sound transmitter error reporting are common practices in this field and will not be elaborated upon here. The scanning structure 2 is a common scanning terminal and will also not be described in detail.

[0046] In this embodiment, the placement space is set as a placement slot 311, and the slot sidewall facing the barcode scanning structure is provided with an opening 33, which is used to expose the barcode of the blood collection tube a.

[0047] Specifically, the blood collection tube barcode scanning device further includes a guide rail 5 and a slider 6. The guide rail 5 extends in the same direction as the movement trajectory and is located in the placement area 11. The slider 6 is slidably connected to the guide rail 5 and connected to the lower end of the placement frame 3. The guide rail 5 defines the movement trajectory, and through the cooperation of the guide rail 5 and the slider 6, the operator can easily push the placement frame 3 according to the movement trajectory.

[0048] In another embodiment, the placement area 11 forms a limiting groove that extends and extends through the placement area in the front-back direction. The width of the limiting groove is adapted to the width of the placement frame 3, and multiple ball bearings are embedded in the bottom wall of the limiting groove. When multiple blood collection tubes a placed on the placement frame 3 need to be scanned, the placement frame 3 is first inserted into the limiting groove from front to back. As the placement frame 3 is pushed, the multiple ball bearings roll, allowing the placement frame 3 to slide in the front-back direction. This facilitates setup and saves manpower.

[0049] Furthermore, multiple guide rails 5 are provided, and the multiple guide rails 5 are arranged along the distribution direction of the scanning structure and the placement area 11; multiple placement racks 3 are provided, and the multiple placement racks 3 are arranged one-to-one with the multiple guide rails 5; multiple sliders 6 are provided, and the multiple sliders 6 are installed one-to-one with the lower end of the multiple placement racks 3.

[0050] In this embodiment, multiple guide rails 5 are arranged in a left-right direction. Multiple placement racks 3 are correspondingly arranged with the multiple guide rails 5; multiple sliders 6 are provided, and each slider 6 is installed at the lower end of one of the multiple placement racks 3. When scanning is required using multiple placement racks 3, they need to be installed from right to left onto the multiple guide rails 5 to avoid obstructing the scanning structure 2.

[0051] Furthermore, the plurality of guide rails 5 extend along the length direction of the base, and the plurality of guide rails 5 are distributed along the width direction of the base 1.

[0052] In this embodiment, the movement trajectory is a straight line extending in the front-back direction; the guide rail 5 extends in the front-back direction and is disposed in the placement area 11; the slider 6 is slidably connected to the guide rail 5 and connected to the lower end of the placement frame 3. When it is necessary to scan multiple blood collection tubes a placed on the placement frame 3, the slider 6 is first installed in the guide rail 5 from front to back, thereby enabling the placement frame 3 to move in the front-back direction; thus, the structure is simple and stable. In another embodiment, the movement trajectory is an arc extending in the front-back direction, and the shape of the guide rail 5 is set to conform to the arc.

[0053] In this embodiment, the length of the slider 6 is the same as the length of the guide rail 5, so that the placement frame 3 is more stably placed on the base 1 after scanning.

[0054] Furthermore, the guide rail 5 has a guide groove 51 that extends through the length direction of the base 1, and the side wall of the guide groove 51 is provided with a protrusion 52 that extends along the length direction of the base 1; the slider 6 is recessed with a groove 61, the groove 61 extends along the length direction of the base 1 and passes through the slider 6, and the groove 61 slides in cooperation with the protrusion 52.

[0055] Reference Figure 1 In this embodiment, the guide rail 5 has a through-groove 51 extending in the front-to-back direction, and the sidewall of the guide groove 51 is provided with a protrusion 52 extending in the front-to-back direction. The slider 6 is recessed with a groove 61, which extends in the front-to-back direction and passes through the slider 6. The groove 61 and the protrusion 52 are slidably engaged. When the slider 6 is slidably installed on the guide rail 5, the protrusion 52 is located in the groove 61, thereby restricting the vertical movement of the placement rack 3 after it is installed on the base 1, preventing the placement rack 3 from tipping over due to accidental contact. This improves safety performance.

[0056] It should be noted that the number of the grooves 61 and the protrusions 52 is not limited, as long as they can restrict the vertical movement of the placement frame 3. In this embodiment, two grooves 61 are provided, one on the left and one on the right side of the slider 6. Two protrusions 52 are also provided, one on each of the two sidewalls of the groove 61, located on the upper side of the sidewall. This improves stability and results in a robust and aesthetically pleasing structure.

[0057] In this embodiment, the mating part 32 is configured as a through groove 311 extending in the left-right direction; the detection element 4 is configured as the through-beam transmitter 41 of the through-beam sensor; the base 1 is also provided with a through-beam receiver 42, which is located on the right side of the placement area 11 and distributed opposite to the transmitter. When the infrared light emitted by the through-beam transmitter 41 is blocked by the placement frame 3, the through-beam receiver 42 is triggered. The trigger signal serves as the start signal for the scanning structure 2 to begin scanning, causing the scanning structure 2 to switch from the closed state to the open state, enabling the scanning structure 2 to scan the barcode on the blood collection tube a. As the placement frame 3 is pushed in, the infrared light emitted by the through-beam transmitter 41 passes through the through groove 311 and is received by the through-beam receiver 42. The trigger signal of the through-beam receiver 42 disappears, and the scanning structure 2 switches from the open state to the closed state, thereby scanning and recording the barcode on the blood collection tube a. Thus, the structure is simple and cost-effective.

[0058] In another embodiment, each of the mating parts 32 may also be configured as a through-beam receiver 42.

[0059] Reference Figure 1 The blood collection tube barcode scanning device also includes a micro switch 7, which is disposed within the guide groove 51 of the guide rail 5 and located at the starting position. In this embodiment, the micro switch 7 is disposed within the guide groove 51 of the guide rail 5 and located at the rear end of the guide groove 51. The micro switch 7 is electrically connected to the circuit board assembly. When the placement rack 3 first enters the guide rail 5, it will press and trigger the micro switch 7, and the micro switch 7 remains in the triggered state throughout the entire activity. When both the micro switch 7 and the through-beam receiver 42 are in the triggered state, the scanning structure 2 is activated. This avoids the through-beam receiver 42 being accidentally triggered, causing the scanning structure 2 to activate.

[0060] Furthermore, refer to Figure 3 The blood collection tube barcode scanning device further includes a photoelectric sensor 8, which is located on the base 1 and near the termination position. The photoelectric sensor 8 includes a photoelectric emitting end 81 and a photoelectric receiving end 82. The placement frame 3 is provided with a mating block 34, which is positioned between the photoelectric emitting end 81 and the photoelectric receiving end 82 when the placement frame 3 is installed in the placement area 11.

[0061] In this embodiment, the photoelectric sensor 8 is located at the front of the placement area 11, and the photoelectric transmitter 81 and photoelectric receiver 82 are spaced apart in the left-right direction. The mating block 34 is located at the front end of the placement frame 3, and the mating block 34 is positioned between the photoelectric transmitter 81 and the photoelectric receiver 82 when the placement frame 3 is installed in the placement area 11. The photoelectric sensor 8 is electrically connected to the circuit board assembly, and the photoelectric sensor 8 is used to detect whether the placement frame 3 is installed on the corresponding guide rail 5. After the scanning of the placement frame 3 is completed, the placement frame 3 is installed in the placement area 11, and the mating block 34 is accommodated between the photoelectric transmitter 81 and the photoelectric receiver 82, so that the photoelectric sensor 8 is in a triggered state. At this time, the trigger signal of the through-beam receiver 42 disappears, and the scanning structure 2 switches to the closed state. This avoids the next placement frame 3 to be installed being mistakenly scanned.

[0062] To avoid false scans, in this embodiment, the photoelectric sensor 8 is in a reset state when there are no obstacles between the photoelectric transmitter 81 and the photoelectric receiver 82. The scanning structure 2 receives the start signal when the photoelectric sensor 8 is in a reset state and the micro switch 7 and the through-beam receiver 42 simultaneously switch to the activated state. At this time, it is determined that the placement bracket 3 is installed in the guide rail 5. When the photoelectric sensor 8 switches from the activated state to the reset state, and the micro switch 7 switches from the reset state to the activated state, it is determined that the placement bracket 3 is in a pulled-out state, and the scanning structure 2 does not work at this time.

[0063] Furthermore, in the embodiments of this utility model, the use of sensors to detect and emit signals in response to corresponding operation commands is a common practice in the art and will not be elaborated upon here. A handle 35 is provided at the rear end of the placement rack 3, which is used by the operator to grip and facilitate pushing the placement rack 3.

[0064] In addition, the base 1 is provided with a plurality of marking pieces 9, which are located one-to-one at the front end of the plurality of guide rails 5. Each of the plurality of marking pieces 9 is marked with a number, and the marking piece 9 located on the far right is marked with 1. The numbers marked from right to left increase by one in size. The numbers on the plurality of marking pieces 9 serve as the safe order of the plurality of placement racks 3. This is simple, clear and easy to operate.

[0065] In another embodiment, the plurality of the markers 9 may also indicate that the plurality of the placement racks 3 need to be installed into the placement area 11 from right to left.

[0066] In summary, referring to Figures 1 to 3The working process of the blood collection tube barcode scanning device is as follows: Multiple blood collection tubes (a) to be tested are sequentially placed into the placement rack 3, with the side bearing the barcode exposed above the corresponding opening 33. At this time, the front end of the placement rack 3 is in the starting position. Then, holding the handle 35 of the placement rack 3, the rack is slowly pushed into the front end of the guide rail 5 marked with the number 1. As soon as the placement rack 3 enters the guide rail 5, the corresponding micro switch 7 is triggered, indicating that a blood collection tube (a) has entered the guide rail 5. With a slight push, the infrared light emitted by the through-beam transmitter 41 is blocked by the placement rack 3, triggering the through-beam receiver 42. This signal serves as the start signal for the scanning structure 2 to begin scanning, and the barcode on the first blood collection tube (a) is scanned and recorded. The first trigger of the through-beam receiver 42 records a value of 1, representing the first blood collection tube (a). Continuing to push the placement rack 3 forward, a through groove 311 is provided below the placement slot 32 and between every two placement slots 32. At this time, the infrared light emitted by the through-beam transmitter 41 is received by the through-beam receiver 42, the trigger signal of the through-beam receiver 42 disappears, and the scanning structure 2 stops scanning. If the placement frame 3 is pushed forward again, the through-beam receiver 42 is triggered again, and the scanning structure 2 begins scanning. The barcode on the second blood collection tube a is scanned and recorded. The trigger record of the through-beam receiver 42 is 2, representing the second blood collection tube a, and so on, until the front end of the placement frame 3 reaches the termination position, completing the scanning of the subsequent blood collection tubes a. When the placement frame 3 is fully pushed in, the corresponding photoelectric receiver 82 is triggered, indicating that the scanning of the blood collection tube a corresponding to the guide rail 5 has ended.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blood collection tube barcode scanning device, characterized in that, include: Base (1), barcode scanning structure (2), placement rack (3) and inspection piece (4); The base (1) is provided with a placement area (11), the placement area (11) has a movement trajectory, and the two ends of the movement trajectory are respectively set as the start position and the end position; The scanning structure (2) is installed on the base (1), located on one side of the placement area (11), and close to the starting position; The placement rack (3) is provided with a plurality of spaced placement spaces (31), which are configured to expose the barcode of the blood collection tube (a). The placement rack (3) is installed in the placement area (11) from the starting position to the ending position according to the movement trajectory, so that the plurality of spaced placement spaces (31) correspond to the barcode scanning structure (2) in sequence. The placement rack (3) is provided with a plurality of mating parts (32), which are provided one-to-one with the plurality of spaced placement spaces (31) on the side near the starting position when the placement rack (3) is installed in the placement area (11). The detection element (4) is disposed on the base (1) and corresponds to the starting position, so as to switch to the open state when it corresponds to the placement rack (3) and to switch to the closed state when it corresponds to the scanning structure (2).

2. The blood collection tube barcode scanning device according to claim 1, characterized in that, The blood collection tube barcode scanning device also includes a guide rail (5) and a slider (6). The extension direction of the guide rail (5) is the same as the movement trajectory and is located in the placement area (11). The slider (6) is slidably connected to the guide rail (5) and connected to the lower end of the placement frame (3).

3. The blood collection tube barcode scanning device according to claim 2, characterized in that, The guide rails (5) are configured as multiple rails, and the multiple guide rails (5) are arranged along the distribution direction of the scanning structure (2) and the placement area (11); The placement rack (3) is configured in multiple ways, and the multiple placement racks (3) are configured one-to-one with the multiple guide rails (5); The slider (6) is configured as a plurality of sliders, and the plurality of sliders (6) are installed one-to-one on the lower end of the plurality of placement racks (3).

4. The blood collection tube barcode scanning device according to claim 3, characterized in that, The multiple guide rails (5) extend along the length direction of the base (1), and the multiple guide rails (5) are distributed along the width direction of the base (1).

5. The blood collection tube barcode scanning device according to claim 3, characterized in that, The guide rail (5) has a guide groove (51) that runs through the length of the base (1), and the sidewall of the guide groove (51) is provided with a protrusion (52) that extends along the length of the base. The slider (6) is recessed with a groove (61), which extends along the length of the base (1) and passes through the slider (6). The groove (61) is slidably engaged with the protrusion (52).

6. The blood collection tube barcode scanning device according to claim 2, characterized in that, The length of the slider (6) is the same as the length of the guide rail (5).

7. The blood collection tube barcode scanning device according to claim 2, characterized in that, The blood collection tube barcode scanning device also includes a micro switch (7), which is located in the guide groove (51) of the guide rail (5) and is located at the starting position.

8. The blood collection tube barcode scanning device according to claim 1, characterized in that, The detection element (4) is configured as the through-beam transmitter (41) of the through-beam sensor; The base (1) is also provided with a through-beam receiver (42), which is distributed opposite to the through-beam transmitter (41) on both sides of the placement area (11); The mating part (32) is configured as a through groove (321).

9. The blood collection tube barcode scanning device according to claim 1, characterized in that, The blood collection tube barcode scanning device also includes a photoelectric sensor (8), which is located on the base (1) and close to the termination position. The photoelectric sensor (8) includes a photoelectric transmitter (81) and a photoelectric receiver (82) facing each other. The placement rack (3) is provided with a mating block (34) which is positioned between the photoelectric transmitter (81) and the photoelectric receiver (82) when the placement rack (3) is installed in the placement area (11).

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