Blood sampling device for biomedical experiment

Abstract

The utility model discloses a biomedical experiment blood taking device, which relates to the technical field of biomedicine, and comprises a mounting cylinder, one end of the mounting cylinder is in threaded connection with a blood taking cylinder, a needle head is mounted on the blood taking cylinder, an auxiliary blood taking unit for automatically taking blood is arranged in the mounting cylinder, and the auxiliary blood taking unit is provided with a needle head. The auxiliary blood taking unit comprises a telescopic sleeve which is connected into the mounting cylinder in a sliding mode, a first connecting block is connected into the blood taking cylinder in a sliding mode, a rubber plug is fixedly connected to the first connecting block, and a driving unit used for driving the first connecting block to slide in the blood taking cylinder is arranged in the mounting cylinder. Through the arrangement of the telescopic sleeve, the first connecting block, the rubber plug, the guide rail, the guide groove, the second connecting block, the torsion spring, the limiting block and the limiting groove, the purpose of driving the rubber plug to slide in the blood taking barrel to take blood is achieved, an existing blood taking structure is replaced, the sliding stability of the rubber plug is improved, the blood taking efficiency is improved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of biomedicine, in particular to a blood sampling device for biomedical experiments. Background Art

[0002] Biomedicine is a discipline established on the basis of laboratories. Experiments are a supplement to theories, and they play an irreplaceable role in improving students' hands-on ability, analytical ability, and problem-solving ability. Biomedicine often requires medical experiments on living bodies, and then analyzes and studies the blood obtained to obtain data as theoretical support. Therefore, blood sampling devices are required. However, most existing blood sampling devices are disposable. Since the various structures are designed as one, they cannot be reused, resulting in excessive waste of resources.

[0003] For example, the Chinese patent with publication number CN215605742U discloses a biomedical experimental blood sampling device, including a tube body, an extraction device, a blood collection bottle, a needle tube and a through hole; the blood collection bottle is detachably arranged at the end of the tube body along the axial direction of the tube body; the tail of the blood collection bottle is provided with a through hole that is connected to the inside of the blood collection bottle; the head of the blood collection bottle is provided with a needle tube that is connected to the inside of the blood collection bottle; the tail of the tube body is provided with an extraction device along the axial direction of the tube body; the extraction device moves freely in the tube body; the extraction device is connected to the inside of the blood collection bottle through the through hole. The utility model provides a reusable biomedical experimental blood sampling device.

[0004] The above-mentioned blood sampling device adopts air pressure adsorption to achieve the purpose of blood sampling. Blood sampling is achieved by driving the rubber pad to slide in the blood sampling bottle. However, since the rubber pad has a certain degree of softness and lacks a moving guide, it is easy to cause flipping and deviation during the sliding process of the rubber pad, affecting the blood sampling effect and having low practicality. Therefore, the present application provides a biomedical experiment blood sampling device to meet the needs. Utility Model Content

[0005] The main purpose of the utility model is to provide a biomedical experiment blood sampling device, which can effectively solve the problem that the existing blood sampling device proposed in the background technology achieves blood sampling by driving a rubber pad to slide in a blood sampling bottle, and the sliding of the rubber pad lacks a moving guide, which affects the blood sampling efficiency. The purpose of reducing resource waste and improving blood sampling efficiency is achieved.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a biomedical experimental blood drawing device, comprising a mounting cylinder, one end of the mounting cylinder is threadedly connected to a blood drawing cylinder, a needle is installed on the blood drawing cylinder, an auxiliary blood drawing unit for automatic blood drawing is arranged in the mounting cylinder, the auxiliary blood drawing unit comprises a telescopic sleeve slidably connected to the mounting cylinder, one end of the blood drawing cylinder is fixedly connected to a retaining ring, a first connecting block is slidably connected in the blood drawing cylinder, a rubber plug is fixedly connected to the first connecting block, and a driving unit for driving the first connecting block to slide in the blood drawing cylinder is arranged in the mounting cylinder.

[0007] Preferably, the driving unit includes a second connecting block rotatably connected to the end of the telescopic sleeve, a plurality of limit blocks are fixedly connected to the second connecting block, a receiving hole is provided on the first connecting block, a plurality of limit grooves are provided on the inner wall of the receiving hole, the limit block is in an L-shaped structure, and the limit block is adapted to the limit groove.

[0008] Preferably, a torsion spring is provided at the rotational connection position between the telescopic sleeve and the second connecting block.

[0009] Preferably, a plurality of guide rails are fixedly connected inside the blood collection cylinder, a plurality of guide grooves are provided on the rubber stopper, and the rubber stopper is slidably connected to the guide rails through the guide grooves.

[0010] Preferably, one end of the telescopic sleeve is fixedly connected to a cap, a motor is installed in the cap, an output end of the motor is fixedly connected to a screw, and the telescopic sleeve is threadedly connected to the screw to drive the telescopic sleeve to slide in the installation tube.

[0011] Preferably, a pair of guide rods are fixedly connected to the telescopic sleeve, a pair of slide grooves are provided in the mounting tube, and the guide rods are slidably connected in the slide grooves.

[0012] Preferably, a control button is provided on the cap, and a controller is provided inside the cap, and the controller is respectively connected to the control button and the motor through electrical control.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. By arranging a telescopic sleeve, a first connecting block, a rubber plug, a guide rail, a guide groove, a second connecting block, a torsion spring, a limit block, and a limit groove, the purpose of driving the rubber plug to slide in the blood collection tube to collect blood is achieved, replacing the existing blood collection structure. Through the coordinated use of the telescopic sleeve, the guide rail, and the guide groove, the stability of the rubber plug during sliding is improved, the blood collection efficiency is improved, and the practicability is high.

[0015] 2. By setting a telescopic sleeve, a cap, a motor, a control button, a screw, a slide groove, and a guide rod, the purpose of driving the telescopic sleeve to move back and forth and then driving the rubber stopper to draw blood back and forth is achieved, replacing the existing manual blood drawing structure and improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a blood sampling device for biomedical experiments;

[0017] Figure 2 It is a partially cutaway three-dimensional structural schematic diagram of a biomedical experiment blood sampling device;

[0018] Figure 3 It is a partially cutaway three-dimensional enlarged structural schematic diagram of the telescopic sleeve;

[0019] Figure 4 It is a schematic diagram of the three-dimensional enlarged structure of the first connecting block.

[0020] In the figure: 1. installation cylinder; 2. telescopic sleeve; 3. blood collection cylinder; 4. needle; 5. retaining ring; 6. first connecting block; 7. rubber plug; 8. guide rail; 9. guide groove; 10. second connecting block; 11. torsion spring; 12. limit block; 13. limit groove; 14. cover cap; 15. motor; 16. control button; 17. screw; 18. slide groove; 19. guide rod. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example 1: Reference Figure 1-4 The biomedical experiment blood sampling device shown in the figure comprises a mounting tube 1, one end of the mounting tube 1 is threadedly connected to a blood sampling tube 3, a needle 4 is installed on the blood sampling tube 3, an auxiliary blood sampling unit for automatic blood sampling is arranged in the mounting tube 1, the auxiliary blood sampling unit comprises a telescopic sleeve 2 slidably connected to the mounting tube 1, one end of the blood sampling tube 3 is fixedly connected to a retaining ring 5, a first connecting block 6 is slidably connected to the blood sampling tube 3, a rubber plug 7 is fixedly connected to the first connecting block 6, a driving unit for driving the first connecting block 6 to slide in the blood sampling tube 3 is arranged in the mounting tube 1, and when blood is collected, First, the blood collection cylinder 3 is rotated and tightened on the mounting cylinder 1, and then the telescopic sleeve 2 is pushed to move by the driving unit so that the telescopic sleeve 2 contacts the first connecting block 6, and the rubber plug 7 is pushed to slide to the bottom end of the blood collection cylinder 3, and then the rubber plug 7 is driven by the driving unit to move in the opposite direction to achieve blood collection until the telescopic sleeve 2 is separated from the first connecting block 6, and then the blood collection cylinder 3 can be taken out from the mounting cylinder 1. The rubber plug 7 is set to seal the inside of the blood collection cylinder 3 to prevent blood from flowing out, replacing the existing adsorption-type air pressure blood collection structure, which is simple to use, convenient and highly practical.

[0025] The driving unit includes a second connecting block 10 rotatably connected to the end of the telescopic sleeve 2, and a plurality of limit blocks 12 are fixedly connected to the second connecting block 10. A receiving hole is provided on the first connecting block 6, and a plurality of limit grooves 13 are provided on the inner wall of the receiving hole. The limit block 12 is in an L-shaped structure, and the limit block 12 is adapted to the limit groove 13. A torsion spring 11 is provided at the rotational connection position between the telescopic sleeve 2 and the second connecting block 10. A plurality of guide rails 8 are fixedly connected in the blood collection tube 3, and a plurality of guide grooves 9 are provided on the rubber stopper 7. The rubber stopper 7 is slidably connected to the guide rail 8 through the guide groove 9.

[0026] When in use, by driving the telescopic sleeve 2 to move, the second connecting block 10 is driven to pass through the retaining ring 5 and approach the first connecting block 6, driving the limit block 12 to be inserted into the limit groove 13, and under the guidance of the torsion spring 11, the limit block 12 is clamped into the limit groove 13. As the telescopic sleeve 2 continues to move, the rubber plug 7 on the first connecting block 6 is pushed to move toward the bottom of the blood taking cylinder 3. When taking blood, the telescopic sleeve 2 is driven to move in the opposite direction, driving the second connecting block 10 to move, through the clamping connection of the limit block 12 and the limit groove 13, under the cooperation of the torsion spring 11, the rubber plug 7 is driven to slide in the blood taking cylinder 3, so that negative pressure is generated in the blood taking cylinder 3, and blood taking is achieved. When the first connecting block 6 moves to the position of the retaining ring 5, the retaining ring 5 is resisted, and as the telescopic sleeve 2 continues to move, the limit block 12 is separated from the limit groove 13. At this time, the blood taking work is completed, and the blood taking cylinder 3 can be screwed out, and the blood taking cylinder 3 can be replaced separately to reduce resource waste.

[0027] One end of the telescopic sleeve 2 is fixedly connected to a cap 14, a motor 15 is installed in the cap 14, an output end of the motor 15 is fixedly connected to a screw 17, the telescopic sleeve 2 is threadedly connected to the screw 17, and is used to drive the telescopic sleeve 2 to slide in the mounting tube 1, a pair of guide rods 19 are fixedly connected to the telescopic sleeve 2, a pair of slide grooves 18 are opened in the mounting tube 1, and the guide rods 19 are slidably connected in the slide grooves 18, a control button 16 is provided on the cap 14, and a controller is provided in the cap 14. The controller is a prior art and is not drawn in the figure. The controller is respectively connected to the control button 16 and the motor 15 through electrical control.

[0028] When in use, the motor 15 is started by the control button 16, which drives the screw 17 to rotate. With the cooperation of the slide groove 18 and the guide rod 19, the telescopic sleeve 2 is driven to slide in the installation tube 1. Similarly, the rubber plug 7 is pushed to slide in the blood collection tube 3 to achieve the purpose of blood collection. In the process of blood collection, the cooperation of the guide rail 8 and the guide groove 9 provides a guide to prevent the rubber plug 7 from rotating. The cooperation of the telescopic sleeve 2 provides a guide to prevent the rubber plug 7 from deflecting, thereby improving the stability of the rubber plug 7 in moving blood collection, ensuring the stability of blood collection and blood storage, and having high practicality.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A biomedical experiment blood sampling device, comprising a mounting cylinder (1), one end of the mounting cylinder (1) being threadedly connected to a blood sampling cylinder (3), a needle (4) being mounted on the blood sampling cylinder (3), characterized in that: An auxiliary blood collection unit for automatic blood collection is arranged in the installation cylinder (1), and the auxiliary blood collection unit comprises a telescopic sleeve (2) slidably connected to the installation cylinder (1); a retaining ring (5) is fixedly connected to one end of the blood collection cylinder (3); a first connecting block (6) is slidably connected to the blood collection cylinder (3); a rubber plug (7) is fixedly connected to the first connecting block (6); and a driving unit for driving the first connecting block (6) to slide in the blood collection cylinder (3) is arranged in the installation cylinder (1).

2. A biomedical experiment blood sampling device according to claim 1, characterized in that: The driving unit comprises a second connecting block (10) rotatably connected to the end of the telescopic sleeve (2); a plurality of limit blocks (12) are fixedly connected to the second connecting block (10); a receiving hole is provided on the first connecting block (6); a plurality of limit grooves (13) are provided on the inner wall of the receiving hole; the limit block (12) is in the shape of an L-shaped structure; and the limit block (12) is adapted to fit the limit groove (13).

3. A biomedical experiment blood sampling device according to claim 2, characterized in that: A torsion spring (11) is provided at the rotational connection position between the telescopic sleeve (2) and the second connecting block (10).

4. A biomedical experiment blood sampling device according to claim 1, characterized in that: A plurality of guide rails (8) are fixedly connected inside the blood collection cylinder (3), a plurality of guide grooves (9) are provided on the rubber stopper (7), and the rubber stopper (7) is slidably connected to the guide rails (8) via the guide grooves (9).

5. A biomedical experiment blood sampling device according to claim 2, characterized in that: One end of the telescopic sleeve (2) is fixedly connected to a cover cap (14), a motor (15) is installed in the cover cap (14), an output end of the motor (15) is fixedly connected to a screw rod (17), and the telescopic sleeve (2) is threadedly connected to the screw rod (17) for driving the telescopic sleeve (2) to slide in the installation tube (1).

6. A biomedical experiment blood sampling device according to claim 5, characterized in that: A pair of guide rods (19) are fixedly connected to the telescopic sleeve (2), a pair of slide grooves (18) are provided in the installation cylinder (1), and the guide rods (19) are slidably connected in the slide grooves (18).

7. The biomedical experiment blood sampling device according to claim 5, characterized in that: The cover cap (14) is provided with a control button (16), and a controller is provided inside the cover cap (14). The controller is respectively connected to the control button (16) and the motor (15) through electrical control.

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