An automated press-to-collect blood device

Abstract

The application relates to the technical field of blood collection needles, in particular to an automatic pressing blood collection device. The automatic pressing blood collection device comprises a base, one end of the top of the base is fixed with a supporting plate, one end of the supporting plate is fixed with a first motor, the output end of the first motor is provided with a bidirectional moving structure, one end of the outer side of the bidirectional moving structure is provided with a blood collection structure, the other end of the outer side of the bidirectional moving structure is provided with a moving pressing structure, and the other end of the top of the base is provided with a clamping structure. The automatic pressing blood collection device provided by the application simplifies the blood collection process through the design of the bidirectional moving structure and the moving pressing structure, does not need an additional pressing step, and makes blood collection more rapid and convenient; secondly, the pressing-free design reduces the discomfort of patients, especially for those who feel uncomfortable or afraid of pressing, the design is more friendly; in general, the application improves the blood collection efficiency and the comfort of patients through a series of designs.

Description

Technical Field

[0001] This invention relates to the field of blood collection needle technology, and more particularly to an automated pressure-based blood collection device. Background Technology

[0002] A blood collection needle is an instrument used to collect blood samples during medical testing. It consists of a needle tip and a needle shaft. The needle tip is located at the head of the needle shaft, and a sheath is slidably connected to the needle shaft. A return spring is provided between the sheath and the needle shaft, and the initial position of the sheath is located at the head of the needle tip and the needle shaft.

[0003] Blood collection needles have a wide range of applications, primarily in medical testing, blood donation, and animal experiments. In medical testing, they are used to collect blood samples for various tests and examinations, including biochemistry, immunology, blood glucose, and complete blood count. In blood donation, the blood is collected, processed, and then used to treat patients. In animal experiments, they are used to collect blood samples from animals for various experiments and research.

[0004] When using the above technology, the following technical problems were found in the existing technology: the existing blood collection needles do not have a pressure-free hemostasis device, which can lead to bleeding and local hematoma. In particular, for patients with poor coagulation function, failure to apply pressure may result in uncontrollable bleeding and the formation of large-area hematoma. Therefore, we designed an automated pressure-based blood collection device to provide another technical solution to the above technical problems. Summary of the Invention

[0005] Therefore, it is necessary to provide an automated pressure-based blood collection device to address the aforementioned technical problems and solve the issues raised in the background section.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An automated blood collection device includes a base, a support plate fixed to one end of the top of the base, a first motor fixed to one end of the support plate, a bidirectional moving structure at the output end of the first motor, a blood collection structure at one end of the outer side of the bidirectional moving structure, a moving pressing structure at the other end of the outer side of the bidirectional moving structure, and a clamping structure at the other end of the top of the base.

[0008] In a preferred embodiment of the automated pressure blood collection device provided by the present invention, the bidirectional moving structure includes a first bevel gear, a second bevel gear, a first connecting rod, a first screw, a second connecting rod, a second screw, and a slider. The output end of the first motor is fixed to the first bevel gear. The second bevel gear is meshed with one side of the first bevel gear. The first connecting rod is fixed to one side of the second bevel gear. The first connecting rod is rotatably connected to a support plate. The first screw is fixed to one side of the first connecting rod. The second connecting rod is fixed to one side of the first screw. The second screw is fixed to one side of the second connecting rod. The threads of the second screw and the first screw are opposite. The slider is threaded to the outer side of the first screw.

[0009] As a preferred embodiment of the automated pressure blood collection device provided by the present invention, the blood collection structure includes a screw sleeve, a suction cup, a first slide rod, a sealing plate, a blood collection bottle, a blood collection tube, a blood collection needle, a first sliding plate, a second slide rod, and a first spring. A screw sleeve is threaded to one end of the outer side of the second screw rod. A suction cup is fixed to one side of the screw sleeve. A first slide rod is fixed to one side of the suction cup. A first sliding plate is slidably connected to one side of the top of the base. A second slide rod is slidably connected to the inner side of the first sliding plate. Both sides of the second slide rod are fixed to the base. A first spring is sleeved to one end of the outer side of the second slide rod. One side of the first spring is fixed to the first sliding plate, and the other side of the first spring is fixed to the base. A blood collection bottle is fixed to the top of the first sliding plate. A blood collection tube is fixed to one side of the blood collection bottle. A blood collection needle is fixed to one side of the blood collection tube. The inner side of the blood collection bottle is slidably connected to the suction cup. A sealing plate is fixed to one side of the blood collection bottle. The screw sleeve and the first slide rod are both slidably connected to the sealing plate.

[0010] As a preferred embodiment of the automated blood collection device provided by the present invention, the movable pressing structure includes a limiting push block, a second sliding plate, a push box, a second connecting rod, a push plate, a mounting block, a second spring, a hemostatic pressing roller, a connecting plate, a positioning block, a rotating roller, and a positioning rod. A limiting push block is fixed to one side of the sliding block. A push box is slidably connected to the outer side of the limiting push block. A second sliding plate is fixed to the bottom of the push box. The second sliding plate is slidably connected to the base. A second connecting rod is fixed to one side of the push box. A push plate is fixed to one side of the second connecting rod. A mounting block is fixed to one end of the push plate. Connecting plates are fixed to both sides of one top end of the base. A rotating roller is rotatably connected to the side of the two connecting plates that are close to each other. A hemostatic pressing roller is fixed to the outer side of the rotating roller. The connection point between the rotating roller and the hemostatic pressing roller is offset from the center of the hemostatic pressing roller. A positioning rod is fixed to the inner side of the rotating roller. A positioning block is fixed to one side of one of the connecting plates. A second spring is fixed to the top of the positioning block. The top of the second spring is fixed to the positioning rod.

[0011] In a preferred embodiment of the automated blood collection device provided by the present invention, the clamping structure includes a connecting block, a second motor, a worm gear, a worm wheel, a rotating rod, a gear, a rack, a first connecting rod, and grippers. A connecting block is fixed to one end of the bottom side of the base. A second motor is fixed to one side of the connecting block. The output end of the second motor passes through the connecting block and is fixed to a worm gear. A worm wheel is fixed to one side of the worm gear. A rotating rod is fixed to the inner side of the worm wheel. The rotating rod is rotatably connected to the base. A gear is fixed to the top of the outer side of the rotating rod. Racks are meshed on both sides of the gear. First connecting rods are fixed to the top of both racks. Grippers are fixed to the sides of the two first connecting rods that are close to each other.

[0012] In a preferred embodiment of the automated pressure blood collection device provided by the present invention, anti-slip textures are provided on the side of the two grippers that are close to each other.

[0013] In a preferred embodiment of the automated pressure blood collection device provided by the present invention, a third connecting rod is fixed to the bottom of the mounting block, a guide tube is fixed to one side of the third connecting rod, and the guide tube and the blood collection tube are slidably connected.

[0014] In a preferred embodiment of the automated blood collection device provided by the present invention, a first rectangular groove is provided at the top of the base near the midpoint, and the first sliding plate is slidably connected to the base through the first rectangular groove. A second rectangular groove is provided on one side of the top of the base, and the base is slidably connected to the second sliding plate through the second rectangular groove.

[0015] In a preferred embodiment of the automated pressure blood collection device provided by the present invention, a circular through hole is provided on the inner side of the mounting block, and the mounting block is slidably connected to the blood collection bottle through the circular through hole.

[0016] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0017] Meanwhile, through the above technical solutions, the present invention has at least the following beneficial effects:

[0018] This invention provides an automated pressure-based blood collection device. Through its bidirectional moving structure and movable pressure structure, the device simplifies the blood collection process, eliminating the need for additional pressure steps and making blood collection faster and more convenient. Secondly, the pressure-free design reduces patient discomfort, especially for patients who are uncomfortable or fearful of pressure. Furthermore, the pressure-free design also reduces the workload of medical staff, as they no longer need to spend extra time and effort pressing the patient's blood collection site. In summary, this invention improves blood collection efficiency and patient comfort through a series of design improvements. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of an automated pressure blood collection device according to the present invention;

[0021] Figure 2 This is a side view of an automated pressure-based blood collection device according to the present invention;

[0022] Figure 3 This is a schematic diagram of the bottom of an automated pressure-based blood collection device according to the present invention;

[0023] Figure 4 This is a schematic diagram showing the connection between the second screw and the screw sleeve of an automated pressure blood collection device according to the present invention;

[0024] Figure 5 This is a schematic diagram showing the connection between the first and second bevel gears of an automated blood collection device based on pressure.

[0025] Figure 6 This is a schematic diagram showing the connection between the blood collection bottle and the first sliding plate of the automated pressure blood collection device of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection between the gears and racks in an automated blood collection device based on the present invention.

[0027] Figure 8 This is a schematic diagram showing the connection between the push box and the second connecting rod of an automated pressure blood collection device according to the present invention.

[0028] Figure 9 This is a schematic diagram showing the connection between the second spring and the positioning block in an automated blood collection device based on the present invention.

[0029] Figure 10This is a schematic diagram showing the connection between the third connecting rod and the guide tube of an automated blood collection device based on pressure.

[0030] Figure 11 This is a schematic diagram showing the connection between the hemostatic pressure roller and the rotating roller in an automated pressure blood collection device according to the present invention.

[0031] In the diagram: 1. Base; 2. Support plate; 3. First motor; 4. First bevel gear; 5. Second bevel gear; 6. First connecting rod; 7. First screw; 8. Second connecting rod; 9. Second screw; 10. Slider; 11. Limiting push block; 12. Screw sleeve; 13. Suction cup; 14. First slide rod; 15. Sealing plate; 16. Blood drawing bottle; 17. Blood drawing tube; 18. Blood drawing needle; 19. First sliding plate; 20. Second slide rod; 21. First spring; 2 2. Connecting block; 23. Second motor; 24. Worm gear; 25. Worm wheel; 26. Rotating rod; 27. Gear; 28. Rack; 29. ​​First connecting roller; 30. Gripper; 31. Second sliding plate; 32. Push box; 33. Second connecting roller; 34. Push plate; 35. Mounting block; 36. Second spring; 37. Hemostatic pressing roller; 38. Third connecting rod; 39. Guide tube; 40. Connecting plate; 41. Positioning block; 42. Rotating roller; 43. Positioning rod. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] As described in the background section, existing blood collection needles do not have a pressure-free hemostasis device, which can lead to bleeding and local hematoma. In particular, for patients with poor coagulation function, failure to apply pressure may result in uncontrollable bleeding and the formation of large-area hematomas.

[0034] To address this technical problem, the present invention provides an automated pressure-based blood collection device.

[0035] For details, please refer to Figures 1-11 An automated blood collection device includes: a base 1, a support plate 2 fixed to one end of the top of the base 1, a first motor 3 fixed to one end of the support plate 2, a bidirectional moving structure at the output end of the first motor 3, a blood collection structure at one end of the outer side of the bidirectional moving structure, a moving pressing structure at the other end of the outer side of the bidirectional moving structure, and a clamping structure at the other end of the top of the base 1.

[0036] This invention provides an automated pressure-based blood collection device. Through its bidirectional moving structure and movable pressure structure, the device simplifies the blood collection process, eliminating the need for additional pressure steps and making blood collection faster and more convenient. Secondly, the pressure-free design reduces patient discomfort, especially for patients who are uncomfortable or fearful of pressure. Furthermore, the pressure-free design also reduces the workload of medical staff, as they no longer need to spend extra time and effort pressing the patient's blood collection site. In summary, this invention improves blood collection efficiency and patient comfort through a series of design improvements.

[0037] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] Example 1

[0040] Reference Figures 1-8 An automated blood collection device is provided, comprising a base 1, a support plate 2 fixed to one end of the top of the base 1, a first motor 3 fixed to one end of the support plate 2, a bidirectional moving structure provided at the output end of the first motor 3, a blood drawing structure provided at one end of the outer side of the bidirectional moving structure, a moving pressing structure provided at the other end of the outer side of the bidirectional moving structure, and a clamping structure provided at the other end of the top of the base 1.

[0041] The bidirectional moving structure includes a first bevel gear 4, a second bevel gear 5, a first connecting rod 6, a first screw 7, a second connecting rod 8, a second screw 9, and a slider 10. The output end of the first motor 3 is fixed to the first bevel gear 4. The second bevel gear 5 is meshed with one side of the first bevel gear 4. The first connecting rod 6 is fixed to one side of the second bevel gear 5. The first connecting rod 6 is rotatably connected to the support plate 2. The first screw 7 is fixed to one side of the first connecting rod 6. The second connecting rod 8 is fixed to one side of the first screw 7. The second screw 9 is fixed to one side of the second connecting rod 8. The threads of the second screw 9 and the first screw 7 have opposite directions. The slider 10 is connected to the outer thread of the first screw 7, so that the bidirectional moving structure can drive the device to draw blood and then stop the bleeding.

[0042] The blood-drawing structure includes a screw sleeve 12, a suction cup 13, a first slide rod 14, a sealing plate 15, a blood-drawing bottle 16, a blood-drawing tube 17, a blood-drawing needle 18, a first sliding plate 19, a second slide rod 20, and a first spring 21. One end of the second screw rod 9 is threadedly connected to the screw sleeve 12. The suction cup 13 is fixed to one side of the screw sleeve 12, and the first slide rod 14 is fixed to one side of the suction cup 13. The first sliding plate 19 is slidably connected to one side of the top of the base 1, and the second slide rod 20 is slidably connected to the inner side of the first sliding plate 19. Both sides of the second slide rod 20 are fixed to the base 1. One end of the outer side of the 20 is connected to a first spring 21. One side of the first spring 21 is fixed to the first slide plate 19, and the other side of the first spring 21 is fixed to the base 1. A blood drawing bottle 16 is fixed to the top of the first slide plate 19. A blood drawing tube 17 is fixed to one side of the blood drawing bottle 16. A blood drawing needle 18 is fixed to one side of the blood drawing tube 17. The inner side of the blood drawing bottle 16 is slidably connected to the suction cup 13. A sealing plate 15 is fixed to one side of the blood drawing bottle 16. The screw sleeve 12 and the first slide rod 14 are slidably connected to the sealing plate 15, so that the blood drawing structure can draw blood from the patient's body.

[0043] The movable pressing structure includes a limiting push block 11, a second sliding plate 31, a push box 32, a second connecting rod 33, a push plate 34, a mounting block 35, a second spring 36, a hemostatic pressing roller 37, a connecting plate 40, a positioning block 41, a rotating roller 42, and a positioning rod 43. A limiting push block 11 is fixed to one side of the slider 10. A push box 32 is slidably connected to the outer side of the limiting push block 11. A second sliding plate 31 is fixed to the bottom of the push box 32. The second sliding plate 31 is slidably connected to the base 1. A second connecting rod 33 is fixed to one side of the push box 32. A push plate 34 is fixed to one side of the second connecting rod 33. One end of the push plate 34... A mounting block 35 is fixed, and connecting plates 40 are fixed on both sides of the top end of the base 1. A rotating rod 42 is rotatably connected to the side of the two connecting plates 40 that are close to each other. A hemostatic pressing roller 37 is fixed to the outside of the rotating rod 42. The connection point between the rotating rod 42 and the hemostatic pressing roller 37 is offset from the center of the hemostatic pressing roller 37. A positioning rod 43 is fixed to the inside of the rotating rod 42. A positioning block 41 is fixed to one side of one of the connecting plates 40. A second spring 36 is fixed to the top of the positioning block 41. The top of the second spring 36 is fixed to the positioning rod 43, so that the movable pressing structure can press the patient's arm to stop the bleeding.

[0044] The clamping structure includes a connecting block 22, a second motor 23, a worm 24, a worm wheel 25, a rotating rod 26, a gear 27, a rack 28, a first connecting rod 29, and grippers 30. The connecting block 22 is fixed to one end of the bottom side of the base 1. The second motor 23 is fixed to one side of the connecting block 22. The output end of the second motor 23 passes through the connecting block 22 and is fixed to the worm 24. The worm wheel 25 is fixed to one side of the worm 24. The rotating rod 26 is fixed to the inner side of the worm wheel 25. The rotating rod 26 is rotatably connected to the base 1. The gear 27 is fixed to the top of the outer side of the rotating rod 26. The racks 28 are meshed on both sides of the gear 27. The tops of the two racks 28 are fixed to the first connecting rods 29. Grippers 30 are fixed to the sides of the two first connecting rods 29 that are close to each other, so that the clamping structure can drive the two grippers 30 to move away from or close to each other.

[0045] This invention provides an automated pressure-based blood collection device. Through its bidirectional moving structure and movable pressure structure, the device simplifies the blood collection process, eliminating the need for additional pressure steps and making blood collection faster and more convenient. Secondly, the pressure-free design reduces patient discomfort, especially for patients who are uncomfortable or fearful of pressure. Furthermore, the pressure-free design also reduces the workload of medical staff, as they no longer need to spend extra time and effort pressing the patient's blood collection site. In summary, this invention improves blood collection efficiency and patient comfort through a series of design improvements.

[0046] Example 2

[0047] Based on the above-described Embodiment 1, the following disclosure is made.

[0048] Reference Figures 9-11 An automated pressure blood collection device has anti-slip textures on the side of the two grippers 30 that are close to each other, so that the grippers 30 can tightly grip the patient's arm.

[0049] The bottom of the mounting block 35 is fixed with a third connecting rod 38, and a guide tube 39 is fixed on one side of the third connecting rod 38. The guide tube 39 and the blood collection tube 17 are slidably connected, so that the blood collection tube 17 and the blood collection needle 18 can slide away from the patient's arm inside the guide tube 39, thus avoiding the patient's pain.

[0050] A first rectangular groove is provided at the top of the base 1 near the midpoint. The first sliding plate 19 is slidably connected to the base 1 through the first rectangular groove. A second rectangular groove is provided on one side of the top of the base 1. The base 1 is slidably connected to the second sliding plate 31 through the second rectangular groove, so that the first sliding plate 19 and the second sliding plate 31 can be stably connected to the top of the base 1.

[0051] A circular through hole is provided on the inner side of the mounting block 35. The mounting block 35 is slidably connected to the blood drawing bottle 16 through the circular through hole, so that the mounting block 35 can be stably slidably connected to the blood drawing bottle 16.

[0052] This embodiment provides an automated pressure blood collection device. Through the design of the clamping structure, the blood collection needle can be more stably fixed on the arm, avoiding shaking or displacement during the blood collection process, thereby improving the efficiency of blood collection. Since the clamping structure of the blood collection needle can be stably fixed on the arm, it reduces skin irritation and pain caused by needle movement, thereby alleviating the patient's pain.

[0053] The automated pressure-based blood collection device provided by this invention operates as follows: When the user draws blood from a patient, the patient's arm is placed between two grippers 30. The user energizes the second motor 23, causing it to rotate. The output of the second motor 23 drives the worm gear 24 to rotate. A worm wheel 25 is meshed with one side of the worm gear 24, causing the worm gear 24 to rotate, which in turn drives the rotating rod 26 to rotate. The rotation of the rotating rod 26 drives the gear 27 to rotate. Since racks 28 are meshed with both sides of the gear 27, the rotation of the gear 27 causes the two racks 28 to move, thereby causing the two first connecting rods 29 and the two grippers 30 to move closer together to clamp the patient's arm. The user then inserts the blood-drawing needle 18 into the patient's arm. In the blood vessel, the user energizes the first motor 3, causing it to rotate. The output of the first motor 3 drives the first bevel gear 4 to rotate. Since the first bevel gear 4 is meshed with the second bevel gear 5 on one side, the rotation of the first bevel gear 4 drives the second bevel gear 5 to rotate, which in turn drives the first connecting rod 6 to rotate. The rotation of the first connecting rod 6 drives the first screw 7 and the second screw 9 to rotate. Since the threads of the first screw 7 and the second screw 9 have opposite directions of rotation, their rotation causes the screw sleeve 12 and the slider 10 to move relative to each other. The movement of the screw sleeve 12 causes the suction cup 13 to move, which in turn causes the suction cup 13 to slide inside the blood collection bottle 16. Since the bottom of the blood collection bottle 16 is fixed with the first sliding plate 19, and the first sliding plate 19 is on the base... The top of the base 1 slides. Since the first spring 21 is fixed on one side of the first slide plate 19, the sliding friction of the suction cup 13 inside the blood drawing bottle 16 and the pulling force on the blood drawing bottle 16 generated by the internal vacuum are insufficient to compress the first spring 21. As a result, the first spring 21 can support the first slide plate 19 so that it does not slide on the top of the base 1. This allows the suction cup 13 to slide inside the blood drawing bottle 16 and draw blood from the patient through the blood drawing tube 17 and the blood drawing needle 18. The rotation of the first screw 7 drives the slider 10 to slide, which in turn drives the limiting push block 11 to move and slide inside one end of the push box 32. When it slides to one end inside the push box 32, it can push the push box 32 and the second slide plate 31 to slide on the top of the base 1, thereby pushing the second connecting rod. The movement of the second connecting rod 33 drives the push plate 34 to move, and pushes the mounting block 35 to slide on one side of the blood drawing bottle 16. The sliding of the mounting block 35 pushes the hemostatic pressing roller 37, which in turn causes the hemostatic pressing roller 37 to rotate along the rotating rod 42. Since the connection point between the hemostatic pressing roller 37 and the rotating rod 42 is off-center from the center of the hemostatic pressing roller 37, the hemostatic pressing roller 37 rolls to the patient's blood drawing point, thus achieving hemostasis. After hemostasis is completed, the mounting block 35 only needs to be moved in the opposite direction to disengage the mounting block 35 from the hemostatic pressing roller 37. Under the elastic force of the second spring 36, the positioning rod 43 and the rotating rod 42 are pulled to rotate, causing the hemostatic pressing roller 37 to rotate in the opposite direction and disengage from the patient.This invention eliminates the need for pressure, thus reducing patient discomfort and eliminating the need for additional pressure steps. This allows medical staff to complete blood collection more quickly, reducing their workload.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated pressure-based blood collection device, comprising a base (1), characterized in that, A support plate (2) is fixed to one end of the top of the base (1), and a first motor (3) is fixed to one end of the support plate (2). A bidirectional moving structure is provided at the output end of the first motor (3). A blood-drawing structure is provided at one end of the outer side of the bidirectional moving structure, and a moving pressing structure is provided at the other end of the outer side of the bidirectional moving structure. A clamping structure is provided at the other end of the top of the base (1). The movable pressing structure includes a limiting push block (11), a second sliding plate (31), a push box (32), a second connecting rod (33), a push plate (34), a mounting block (35), a second spring (36), a hemostatic pressing roller (37), a connecting plate (40), a positioning block (41), a rotating rod (42), and a positioning rod (43). A limiting push block (11) is fixed to one side of the slider (10). A push box (32) is slidably connected to the outside of the limiting push block (11). A second sliding plate (31) is fixed to the bottom of the push box (32). The second sliding plate (31) and the base (1) are slidably connected. A second connecting rod (33) is fixed to one side of the push box (32). A push plate (34) is fixed, and an installation block (35) is fixed at one end of the push plate (34). A connecting plate (40) is fixed on both sides of the top end of the base (1). A rotating rod (42) is rotatably connected to the side of the two connecting plates (40) that are close to each other. A hemostatic pressing roller (37) is fixed on the outside of the rotating rod (42). The connection point between the rotating rod (42) and the hemostatic pressing roller (37) is offset from the center of the hemostatic pressing roller (37). A positioning rod (43) is fixed on the inside of the rotating rod (42). A positioning block (41) is fixed on one side of one of the connecting plates (40). A second spring (36) is fixed on the top of the positioning block (41). The top of the second spring (36) is fixed to the positioning rod (43). The bidirectional moving structure includes a first bevel gear (4), a second bevel gear (5), a first connecting rod (6), a first screw (7), a second connecting rod (8), a second screw (9), and a slider (10). The output end of the first motor (3) is fixed with the first bevel gear (4). The first bevel gear (5) is meshed with one side of the first bevel gear (4). The first connecting rod (6) is fixed with one side of the second bevel gear (5). The first connecting rod (6) and the support plate (2) are rotatably connected. The first screw (7) is fixed with one side of the first connecting rod (6). The second connecting rod (8) is fixed with one side of the first screw (7). The second screw (9) is fixed with one side of the second connecting rod (8). The threads of the second screw (9) and the first screw (7) are opposite. The slider (10) is connected to the outer thread of the first screw (7).

2. The automated pressure-based blood collection device according to claim 1, characterized in that, The blood-drawing structure includes a screw sleeve (12), a suction cup (13), a first slide rod (14), a sealing plate (15), a blood-drawing bottle (16), a blood-drawing tube (17), a blood-drawing needle (18), a first sliding plate (19), a second slide rod (20), and a first spring (21). The screw sleeve (12) is threaded to one end of the outer side of the second screw rod (9). The suction cup (13) is fixed to one side of the screw sleeve (12). The first slide rod (14) is fixed to one side of the suction cup (13). The first slide rod (19) is slidably connected to one side of the top of the base (1). The second slide rod (20) is slidably connected to the inner side of the first slide rod (19). Both sides of the second slide rod (20) are connected to the base. (1) Fixed, one end of the second slide bar (20) is connected to a first spring (21), one side of the first spring (21) is fixed to the first slide plate (19), the other side of the first spring (21) is fixed to the base (1), the top of the first slide plate (19) is fixed to a blood drawing bottle (16), one side of the blood drawing bottle (16) is fixed to a blood drawing tube (17), one side of the blood drawing tube (17) is fixed to a blood drawing needle (18), the inner side of the blood drawing bottle (16) is slidably connected to the suction cup (13), one side of the blood drawing bottle (16) is fixed to a sealing plate (15), the screw sleeve (12) and the first slide bar (14) are both slidably connected to the sealing plate (15).

3. The automated pressure-based blood collection device according to claim 1, characterized in that, The clamping structure includes a connecting block (22), a second motor (23), a worm (24), a worm wheel (25), a rotating rod (26), a gear (27), a rack (28), a first connecting rod (29), and a gripper (30). The connecting block (22) is fixed to one end of the bottom side of the base (1). The second motor (23) is fixed to one side of the connecting block (22). The output end of the second motor (23) passes through the connecting block (22) and is fixed to the worm (24). The worm wheel (25) is fixed to one side of the worm (24). The rotating rod (26) is fixed to the inner side of the worm wheel (25). The rotating rod (26) is rotatably connected to the base (1). The gear (27) is fixed to the top of the outer side of the rotating rod (26). The rack (28) is meshed on both sides of the gear (27). The first connecting rod (29) is fixed to the top of both racks (28). The gripper (30) is fixed to the side of the two first connecting rods (29) that are close to each other.

4. The automated pressure-based blood collection device according to claim 3, characterized in that, The two grippers (30) are provided with anti-slip texture on the side that is close to each other.

5. An automated pressure-based blood collection device according to claim 4, characterized in that, The bottom of the mounting block (35) is fixed with a third connecting rod (38), and a guide tube (39) is fixed on one side of the third connecting rod (38). The guide tube (39) and the suction tube (17) are slidably connected.

6. An automated pressure-based blood collection device according to claim 2, characterized in that, The base (1) has a first rectangular groove at the top near the midpoint. The first sliding plate (19) is slidably connected to the base (1) through the first rectangular groove. The base (1) has a second rectangular groove on one side of the top. The base (1) is slidably connected to the second sliding plate (31) through the second rectangular groove.

7. An automated blood collection device based on pressure as described in claim 6, characterized in that, The mounting block (35) has a circular through hole on its inner side, and the mounting block (35) is slidably connected to the blood drawing bottle (16) through the circular through hole.

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