Blood collection tube suction device

Abstract

The invention discloses a blood collection tube suction device and relates to the technical field of blood collection tubes, the blood collection tube suction device comprises a base and a base plate, the base plate is fixedly connected to the side edge of the base, a linkage mechanism is arranged outside the base and comprises a driving motor and a moving assembly, the moving assembly is arranged at the output end of the driving motor, and the side edge of the moving assembly is in transmission connection with a transmission belt; a transmission rod is in transmission connection with the upper portion of the transmission belt, a first edged gear is fixedly connected to the side, away from the transmission belt, of the transmission rod, the first edged gear and the transmission rod are both arranged on the side edge of the base plate, an annular frame is arranged on the side edge of the first edged gear, and a first rack plate is fixedly connected to the side edge of the annular frame. Meanwhile, automatic packaging of the sealing cover is completed, the whole process is continuous and smooth, the blood sampling time is remarkably shortened, the overall efficiency is improved, external pollution is effectively isolated, samples are prevented from being mixed or polluted in the inspection process, and therefore the accuracy of the detection result is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of blood collection tube technology, and in particular to a blood collection tube aspiration device. Background Technology

[0002] Blood collection tube aspiration is a common procedure in medical testing and clinical operations, primarily used to collect blood samples and ensure their quality meets subsequent testing requirements. Blood collection tube aspiration utilizes vacuum negative pressure to automatically allow blood to flow into the tube, eliminating the need for manual injection. The inside of the blood collection tube is pre-sealed with various additives (such as anticoagulants and clotting promoters), which mix with the blood during aspiration, providing a suitable environment for subsequent testing.

[0003] In existing technologies, during the collection of multiple blood samples, medical staff need to frequently and manually change blood collection tubes of different types or for different testing items (such as blood culture tubes, coagulation test tubes, serum tubes, etc.). During the manual replacement of blood collection tubes, due to the interruption of the operation, it is often difficult to seal the blood collection tubes that have been filled in time. During subsequent testing, the sponge inserted into the cap of the aspiration tube is easily contaminated. Especially when collecting multiple blood samples continuously, this may further increase the risk to sample quality and ultimately affect the reliability of the test results. Therefore, a blood collection tube aspiration device is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the frequent manual replacement of blood collection tubes (e.g., blood culture tubes, coagulation tubes, serum tubes, etc.) by medical staff during the collection of multiple blood samples. During manual replacement, the interruption of the operation makes it difficult to seal the filled blood collection tubes in a timely manner, leading to potential contamination of the sponge inserted into the cap during subsequent sample delivery. This is especially problematic when collecting multiple blood samples consecutively, potentially increasing sample quality risks and ultimately affecting the reliability of test results. Therefore, this invention proposes a blood collection tube aspiration device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A blood collection tube aspiration device includes a base and a base plate. The base plate is fixedly connected to the side of the base. A linkage mechanism is provided outside the base. The linkage mechanism includes a drive motor and a first notched gear. The drive motor can control the rotation of the first notched gear. The first notched gear and a transmission rod are both provided on the side of the base plate. A ring frame for reciprocating movement is provided on the side of the first notched gear. A first rack plate is fixedly connected to the side of the ring frame. A gear, a second rack plate, and a first L-shaped fixing plate are provided on the side of the first rack plate for forming a reciprocating lifting motion. The gear is meshed with the lower part of the first rack plate, and the second rack plate is meshed with the side of the gear. An L-shaped fixing plate has a suction tube on the side away from the second rack plate. A cap and a storage tube are located below the suction tube. A second L-shaped fixing plate and a storage cylinder are located on the side of the annular frame away from the first rack plate. The second L-shaped fixing plate has the same function as the first L-shaped fixing plate and is used to drive the storage cylinder to reciprocate up and down. A sealing cover is located below the storage cylinder. The sealing cover is driven by a linkage mechanism to reciprocate up and down to achieve downward sealing of the storage tube. A spring, an insert plate, and a fixing groove are provided on the side of the sealing cover. The spring and insert plate are located on the side of the sealing cover, and the fixing groove is located on the opposite side of the sealing cover symmetrically. This is used to provide additional clamping force when the sealing cover is closed to ensure the sealing effect.

[0006] The ring frame has symmetrical rack sections on its upper and lower sides, and two sets of gears are symmetrically arranged. The rack sections of the two sets of second rack plates are respectively arranged opposite each other on the sides of the two sets of gears.

[0007] The above technical solution further includes: The drive motor is fixedly installed on the side of the base. A moving component is provided below the drive motor and is located at the output end of the drive motor. A transmission belt is connected to the side of the moving component, and a transmission rod is connected to the top of the transmission belt. The transmission rod is fixedly connected to the first notched gear and rotatably connected to the base plate. The second rack plate is fixedly connected to the first L-shaped fixing plate. The suction tube is inserted into the cap and connected to the storage tube. The spring is rotatably connected to the sealing cap, and the insert plate is fixedly connected to the sealing cap. The fixing groove is opened inside the sealing cap.

[0008] The moving component includes a second notched gear, a long toothed plate, and a placement cylinder. The second notched gear is connected to a transmission belt. The long toothed plate is meshed with the lower part of the second notched gear. The placement cylinder is fixedly connected to the side of the long toothed plate and multiple sets are provided. The blood vessel is placed inside the placement cylinder.

[0009] The cap and the storage tube are provided in multiple sets, and each set of storage tubes corresponds to a set of placement tubes.

[0010] A blood collection needle for drawing blood is provided on the side of the suction tube away from the first L-shaped fixing plate.

[0011] The second rack plate has a sliding plate slidably connected to its side, and the sliding plate is fixedly connected to the base plate.

[0012] The storage cylinder is provided with a retaining spring plate on the side near the sealing cap for temporarily locking the sealing cap, and two sets of retaining spring plates are symmetrically arranged below the storage cylinder.

[0013] The annular frame is slidably connected to a slide rail on its side. The slide rail is fixedly connected to the substrate. A set of slide rails is symmetrically arranged on the upper and lower sides of the substrate. The annular frame is slidably arranged between two sets of slide rails.

[0014] A connecting plate is fixedly connected to the side of the toothed plate, and a grooved plate is fixedly connected to the side of the base. The connecting plate and the grooved plate are slidably connected.

[0015] The present invention has the following beneficial effects: 1. In this invention, the automatic replacement and sealing of blood collection tubes are achieved through a linkage mechanism, avoiding the tedious manual replacement of blood collection tubes by medical staff. The drive motor, transmission belt, side-cut gear, and rack plate work together. When a set of storage tubes has finished collecting blood, the suction tube can be automatically pulled out. At the same time, another set of sealing caps automatically descends to seal the full storage tubes. Medical staff do not need to frequently manually replace blood collection tubes and perform sealing operations. Moreover, the moving component drives the storage tubes to move sequentially, precisely coordinating with the action of the linkage mechanism. The needle is removed when the second side-cut gear and the long rack plate briefly disengage. When they re-engage, the cap is sealed. Afterward, the linkage mechanism completes the needle insertion and storage tube movement. The whole process is smooth and continuous, greatly saving blood collection time and significantly improving the overall blood collection efficiency.

[0016] 2. In this invention, when collecting multiple blood samples continuously, the sealing cap is automatically released through the storage tube, and the storage tube is sealed immediately after blood collection, effectively isolating external contamination. The insert plate and spring design of the sealing cap further ensure that multiple sets of storage tubes are fixed in a row, preventing sample confusion or contamination during the delivery process, thereby ensuring the accuracy of the test results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a blood collection tube aspiration device proposed in this invention; Figure 2 This is a schematic diagram of the external structure in this invention; Figure 3 This is a schematic diagram of a portion of the three-dimensional structure in this invention. Figure 1 ; Figure 4 This is a schematic diagram of a portion of the three-dimensional structure in this invention. Figure 2 ; Figure 5 This is a schematic diagram of a portion of the three-dimensional structure in this invention. Figure 3 ; Figure 6 This is a three-dimensional structural diagram of the cap assembly in this invention; Figure 7 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 8 for Figure 4 Enlarged schematic diagram of the structure at point B; Figure 9 for Figure 5 Enlarged schematic diagram of the structure at point C.

[0018] In the diagram: 1. Base; 2. Drive motor; 3. Transmission belt; 4. Transmission rod; 5. Base plate; 6. First notched gear; 7. Ring frame; 8. First rack plate; 9. Gear; 10. Second rack plate; 11. First L-shaped fixing plate; 12. Suction tube; 13. Cap; 14. Storage tube; 15. Second L-shaped fixing plate; 16. Storage cylinder; 17. Sealing cap; 18. Spring; 19. Insert plate; 20. Fixing groove; 21. Second notched gear; 22. Long toothed plate; 23. Placement cylinder; 24. Blood collection needle; 25. Slide plate; 26. Snap ring plate; 27. Slide rail; 28. Connecting plate; 29. ​​Groove plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-9As shown, the present invention is a blood collection tube aspiration device, including a base 1 and a base plate 5. The base plate 5 is fixedly connected to the side of the base 1. A linkage mechanism is provided on the outside of the base 1. The linkage mechanism includes a drive motor 2 and a first notched gear 6. The drive motor 2 can control the first notched gear 6 to rotate. The first notched gear 6 and the transmission rod 4 are both provided on the side of the base plate 5. A ring frame 7 for reciprocating movement is provided on the side of the first notched gear 6. A first rack plate 8 is fixedly connected to the side of the ring frame 7. A gear 9, a second rack plate 10, and a first L-shaped fixing plate 11 for forming a reciprocating lifting action are provided on the side of the first rack plate 8. The gear 9 is meshed and connected below the first rack plate 8. The second rack plate 10 is meshed and connected to the side of the gear 9. The first L-shaped fixing plate 11 is away from the second rack plate 8. A suction tube 12 is provided on one side of the rack plate 10. A cap 13 and a storage tube 14 are provided below the suction tube 12. A second L-shaped fixing plate 15 and a storage cylinder 16 are provided on the side of the ring frame 7 away from the first rack plate 8. The second L-shaped fixing plate 15 has the same function as the first L-shaped fixing plate and is used to drive the storage cylinder 16 to reciprocate up and down. A sealing cover 17 is provided below the storage cylinder 16. The sealing cover 17 is driven by the linkage mechanism to reciprocate up and down to achieve downward sealing of the storage tube 14. A spring 18, an insert plate 19 and a fixing groove 20 are provided on the side of the sealing cover 17. The spring 18 and the insert plate 19 are provided on the side of the sealing cover 17 and the fixing groove 20 is provided on the other side symmetrically of the sealing cover 17. They are used to provide additional clamping force when the sealing cover 17 is closed to ensure the sealing effect.

[0021] The drive motor 2 is fixedly installed on the side of the base 1. A moving component is provided below the drive motor 2. The moving component is located at the output end of the drive motor 2. A transmission belt 3 is connected to the side of the moving component. A transmission rod 4 is connected to the top of the transmission belt 3. The transmission rod 4 is fixedly connected to the first notched gear 6. The transmission rod 4 is rotatably connected to the base plate 5. The second rack plate 10 is fixedly connected to the first L-shaped fixing plate 11. The suction tube 12 is inserted into the cap 13 and connected to the storage tube 14. The spring 18 is rotatably connected to the sealing cap 17 and the insert plate 19 is fixedly connected to the sealing cap 17. The fixing groove 20 is opened inside the sealing cap 17.

[0022] In this embodiment, the linkage mechanism external to the base 1 is activated, and the drive motor 2 in the linkage mechanism starts running. When the drive motor 2 runs, it controls the moving component to move, which in turn moves the cap 13 and the storage tube 14. Simultaneously, the drive motor 2 drives the transmission belt 3 to rotate. The transmission belt 3 consists of two pulleys and a belt, which drives the transmission rod 4 connected to it to rotate. The transmission rod 4 passes through the interior of the base plate 5, driving the first notched gear 6 to rotate. When the first notched gear 6 rotates, each rotation engages with the upper and lower racks of the ring frame 7, thus... One rotation of the side gear 6 drives the ring frame 7 to move back and forth left and right. When the ring frame 7 moves to the left, it drives the first rack plate 8 to move to the left, thereby causing the first rack plate 8 to drive the gear 9 meshing with it below to rotate. When the gear 9 rotates, it drives the second rack plate 10 meshing with it on its side to rise. The second rack plate 10 drives the first L-shaped fixing plate 11 to rise synchronously, thereby causing the first L-shaped fixing plate 11 to drive the suction tube 12 to rise, allowing the suction tube 12 to be pulled out of the cap 13 and the storage tube 14. At the same time, the same set of first rack plates 8, gears 9 and second rack plates 10 are provided on the other side of the ring frame 7. The rack plate 10 will start moving. Since the rack portions of the two sets of second rack plates 10 are arranged opposite each other, the second rack plate 10 on the side closer to the first L-shaped fixing plate 11 is located to the right of the gear 9, while the other set of second rack plates 10 on the side closer to the second L-shaped fixing plate 15 is located to the left of the other set of gears 9. This causes the other set of second rack plates 10 to move in the opposite direction, driving the second L-shaped fixing plate 15 to descend in the same way. The descent of the second L-shaped fixing plate 15 and the second rack plate 10 will drive the storage cylinder 16 and the sealing cover 17 inside the storage cylinder 16 to descend. There are multiple sets of sealing covers 17 inside the storage cylinder 16. At this time, the moving component has already removed the cap 1 from the suction tube 12. 3. The blood vessel 14 moves to below the storage cylinder 16. The storage cylinder 16 descends and locks the sealing cap 17 onto the outside of the cap 13 for sealing to prevent contamination. Similarly, when the annular frame 7 moves the first rack plate 8 to the right, the annular frame 7 will drive the suction tube 12 to descend via the first rack plate 8, gear 9, second rack plate 10, and first L-shaped fixing plate 11. This allows the suction tube 12 to be inserted into the other set of caps 13 and the blood vessel 14 that will move later. Meanwhile, the second L-shaped fixing plate 15 on the other side of the annular frame 7 and the storage cylinder 16 will rise to prevent the next needle removal and capping operation. The sealing cap 17 is provided with an insert plate 19, a spring 18, and a fixing groove 20 on its side.Spring 18 and insert plate 19 are located on the left side of sealing cap 17, while fixing groove 20 is located on the other side of sealing cap 17. This allows insert plate 19 to be compressed when two sets of caps 13 are sealed, until one set of insert plates 19 moves to the fixing groove 20 outside the other set of sealing caps 17. At this point, insert plate 19 uses the elastic potential energy of spring 18 to engage with the fixing groove 20, thus securing multiple sets of caps 13 and blood vessel storage tubes 14 in a single row. This design simplifies disassembly after inspection, improves convenience, and prevents the blood vessel storage tubes 14 from becoming disorganized.

[0023] In one embodiment, the moving component includes a second notched gear 21, a long toothed plate 22, and a placement cylinder 23. The second notched gear 21 is connected to the transmission belt 3. The long toothed plate 22 is meshed with the lower part of the second notched gear 21. The placement cylinder 23 is fixedly connected to the side of the long toothed plate 22 and multiple sets are provided. The storage tube 14 is disposed inside the placement cylinder 23.

[0024] In this embodiment, the moving component is driven by the drive motor 2 via the transmission belt 3. The transmission belt 3 drives the second notched gear 21 to rotate. When the second notched gear 21 rotates, it drives the long toothed plate 22 located below it to move. When the second notched gear 21 rotates one revolution, the long toothed plate 22 only moves a small distance. Correspondingly, in the linkage mechanism, the first notched gear 6 rotates one revolution, driving the ring frame 7 to move left and right. When the long toothed plate 22 moves a certain distance, it drives the placement cylinder 23 fixedly connected to its side to move. Each set of placement cylinders 23 moves simultaneously. The needle is moved, and one set of storage tubes 14 will move to the position of another set of storage tubes 14. During this process, since the second missing edge gear 21 will only mesh with the long tooth plate 22 once per revolution, when the second missing edge gear 21 does not mesh with the long tooth plate 22, the needle removal action has been completed through the linkage mechanism. When meshing occurs, the subsequent capping action is gradually completed. After disengaging, the first missing edge gear 6 and the ring frame 7 in the linkage mechanism will mesh again to complete the needle insertion and the upward movement of the storage tube 16, forming a precise fit and saving time.

[0025] In one embodiment, for the suction tube 12, a blood collection needle 24 for drawing blood is provided on the side of the suction tube 12 away from the first L-shaped fixing plate 11.

[0026] In this embodiment, a blood collection needle 24 is provided on the other side of the suction tube 12. The blood collection needle 24 is inserted into the blood of the test subject, and the suction tube 12 generates negative pressure to use the blood collection needle 24 to draw blood.

[0027] In one embodiment, for the second rack plate 10, a slide plate 25 is slidably connected to the side of the second rack plate 10, and the slide plate 25 is fixedly connected to the base plate 5.

[0028] In this embodiment, when the second rack plate 10 moves up and down, the second rack plate 10 will slide on the side of the slide plate 25. The slide plate 25 is fixedly connected to the base plate 5, which can ensure the stability of the second rack plate 10 when it moves.

[0029] In one embodiment, for the storage cylinder 16, a retaining spring plate 26 for temporarily locking the sealing cap 17 is provided on the side of the storage cylinder 16 near the sealing cap 17, and two sets of retaining spring plates 26 are symmetrically arranged below the storage cylinder 16.

[0030] In this embodiment, two sets of retaining spring plates 26 are symmetrically arranged below the storage cylinder 16. The two sets of retaining spring plates 26 can use their own elasticity to temporarily hold the sealing cap 17 inside the storage cylinder 16. When the sealing cap 17 is sealed above the cap 13, the elasticity of the retaining spring plates 26 is insufficient to keep the sealing cap 17 in place, so that one set of sealing caps 17 leaves the storage cylinder 16, and the next set of sealing caps 17 moves down to the opening of the storage cylinder 16.

[0031] In one embodiment, for the above-mentioned ring frame 7, a slide rail 27 is slidably connected to the side of the ring frame 7, the slide rail 27 is fixedly connected to the substrate 5, and a set of slide rails 27 are symmetrically arranged on the upper and lower sides of the substrate 5, and the ring frame 7 is slidably arranged between two sets of slide rails 27.

[0032] In this embodiment, when the ring frame 7 moves left and right, the two sides of the ring frame 7 will slide outside the two sets of slide rails 27 respectively. The ring frame 7 is set between the two sets of slide rails 27 to ensure the stability of the ring frame 7 when it moves.

[0033] In one embodiment, for the aforementioned toothed plate 22, a connecting plate 28 is fixedly connected to the side of the toothed plate 22, and a grooved plate 29 is fixedly connected to the side of the base 1, with the connecting plate 28 and the grooved plate 29 being slidably connected.

[0034] In this embodiment, when the toothed plate 22 moves the placement cylinder 23, the cap 13, and the storage tube 14, the toothed plate 22 will move the connecting plate 28. The other end of the connecting plate 28 is slidably connected to the groove plate 29, which is fixedly connected to the side of the base 1. This makes the connecting plate 28 stable when sliding inside the groove plate 29, and provides stable support for the toothed plate 22 and other components above it.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blood collection tube aspiration device, comprising a base (1) and a base plate (5), characterized in that, The base plate (5) is fixedly connected to the side of the base (1). A linkage mechanism is provided on the outside of the base (1). The linkage mechanism includes a drive motor (2) and a first notched gear (6). The drive motor (2) can control the first notched gear (6) to rotate. The first notched gear (6) and the transmission rod (4) are both provided on the side of the base plate (5). A ring frame (7) for reciprocating movement is provided on the side of the first notched gear (6). A first rack plate (8) is fixedly connected to the side of the ring frame (7). A gear (9), a second rack plate (10), and a first L-shaped fixing plate (11) for forming a reciprocating lifting action are provided on the side of the first rack plate (8). The gear (9) is meshed with the bottom of the first rack plate (8). The second rack plate (10) is meshed with the side of the gear (9). The first L-shaped fixing plate (11) is provided on the side away from the second rack plate (10). There is a suction tube (12), and a cap (13) and a storage tube (14) are provided below the suction tube (12). A second L-shaped fixing plate (15) and a storage cylinder (16) are provided on the side of the ring frame (7) away from the first rack plate (8). The second L-shaped fixing plate (15) has the same function as the first L-shaped fixing plate and is used to drive the storage cylinder (16) to reciprocate up and down. A sealing cover (17) is provided below the storage cylinder (16). The sealing cover (17) is driven by the linkage mechanism to reciprocate up and down to achieve downward sealing of the storage tube (14). A spring (18), a plug plate (19) and a fixing groove (20) are provided on the side of the sealing cover (17). The spring (18) and the plug plate (19) are provided on the side of the sealing cover (17) and the fixing groove (20) is provided on the other side symmetrical to the sealing cover (17) to provide additional clamping force when the sealing cover (17) is closed to ensure the sealing effect.

2. The blood collection tube aspiration device according to claim 1, characterized in that, The drive motor (2) is fixedly installed on the side of the base (1). A moving component is provided below the drive motor (2). The moving component is located at the output end of the drive motor (2). A transmission belt (3) is connected to the side of the moving component. A transmission rod (4) is connected to the top of the transmission belt (3). The transmission rod (4) is fixedly connected to the first notched gear (6). The transmission rod (4) is rotatably connected to the base plate (5). The second rack plate (10) is fixedly connected to the first L-shaped fixing plate (11). The suction tube (12) is inserted into the cap (13) and connected to the storage tube (14). The spring (18) is rotatably connected to the sealing cap (17) and the insert plate (19) is fixedly connected to the sealing cap (17). The fixing groove (20) is opened inside the sealing cap (17).

3. The blood collection tube aspiration device according to claim 2, characterized in that, The moving component includes a second notched gear (21), a long toothed plate (22), and a placement cylinder (23). The second notched gear (21) is connected to the transmission belt (3). The long toothed plate (22) is meshed with the lower part of the second notched gear (21). The placement cylinder (23) is fixedly connected to the side of the long toothed plate (22) and multiple sets are provided. The storage vessel (14) is placed inside the placement cylinder (23).

4. The blood collection tube aspiration device according to claim 1, characterized in that, A blood collection needle (24) for drawing blood is provided on the side of the suction tube (12) away from the first L-shaped fixing plate (11).

5. The blood collection tube aspiration device according to claim 1, characterized in that, The second rack plate (10) has a sliding plate (25) slidably connected to its side, and the sliding plate (25) is fixedly connected to the base plate (5).

6. The blood collection tube aspiration device according to claim 1, characterized in that, The storage cylinder (16) is provided with a retaining spring plate (26) for temporarily locking the sealing cap (17) on the side near the sealing cap (17). Two sets of retaining spring plates (26) are symmetrically arranged below the storage cylinder (16).

7. The blood collection tube aspiration device according to claim 1, characterized in that, The ring frame (7) is slidably connected to a slide rail (27) on its side. The slide rail (27) is fixedly connected to the substrate (5). The slide rail (27) is symmetrically arranged on the upper and lower sides of the substrate (5). The ring frame (7) is slidably arranged between two sets of slide rails (27).

8. The blood collection tube aspiration device according to claim 3, characterized in that, The long toothed plate (22) is fixedly connected to a connecting plate (28) on its side, and the base (1) is fixedly connected to a grooved plate (29) on its side. The connecting plate (28) and the grooved plate (29) are slidably connected.

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