Continuous quantitative uniform sampling injector

Abstract

The utility model relates to the technical field of injectors, and discloses a continuous quantitative uniform sampling injector which comprises an injection cylinder, a needle head is fixedly connected to the left side of the injection cylinder, scale marks are fixedly connected to the outer wall of the front end of the injection cylinder, and a grab handle is fixedly connected to the outer wall of the right side of the injection cylinder. A piston rod penetrates through and is slidably connected into the grab handle, a pressing handle is fixedly connected to the outer wall of the right side of the piston rod, and an injection piston is fixedly connected to the left side of the piston rod. According to the utility model, the grab handle is held by hand, and then thrust is applied by pressing the handle, so that the piston rod can smoothly move leftwards, the piston rod drives the injection piston to synchronously move in the injection cylinder, and liquid which is successfully sampled in the injection cylinder previously is stably injected out through the needle head; the piston rod is rapidly reset to the initial position through the spring, so that the whole injector is rapidly restored to a preparation state for carrying out next sampling or injection operation, and the operation process is greatly simplified.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, specifically to a continuous quantitative uniform sampling syringe. Background Technology

[0002] The principle of sodium alginate hydrogel 3D printing technology mainly relies on the specific chemical and physical properties of sodium alginate and the application of 3D printing technology. During the 3D printing process, sodium alginate reacts with calcium ions or other cross-linking agents to form a stable hydrogel network, providing a scaffold for cell growth and differentiation. Because the initial hydrogel fabrication requires controlling the liquid fixation volume and the uniformity of particle dispersion within the liquid, but current methods suffer from variations in operator skill and uneven particle distribution, we address this issue by modifying existing continuous injection systems.

[0003] Many syringes are hand-operated, requiring the precise amount of prepared solvent to be drawn into the syringe and then injected manually, which is cumbersome. With the rapid development of 3D printing technology, there are numerous control points required for precise liquid dispensing and hydrogel molding. If large quantities are needed, repeated cycles are required, which is time-consuming and labor-intensive. Furthermore, the required liquid volume varies depending on the shape and size of the hydrogel. Therefore, improvements to existing continuous syringes are necessary.

[0004] To address the aforementioned issues, a continuous quantitative uniform sampling syringe is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a continuous quantitative uniform sampling syringe, which solves the problems in the prior art where quantitative liquid extraction and hydrogel molding require many control points, and if a large quantity is needed, repeated cyclical operations are required, which is time-consuming and labor-intensive. At the same time, the amount of liquid required for hydrogels of different shapes and sizes is not uniform.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a continuous quantitative uniform sampling syringe, comprising an injection barrel, a needle fixedly connected to the left side of the injection barrel, a scale line fixedly connected to the outer wall of the front end of the injection barrel, a handle fixedly connected to the outer wall of the right side of the injection barrel, a piston rod passing through and slidably connected inside the handle, a pressing handle fixedly connected to the outer wall of the right side of the piston rod, an injection piston fixedly connected to the left side of the piston rod, a fixing block fixedly connected to the top right side of the injection barrel, a sliding groove formed inside the front end of the fixing block, a first serration fixedly connected to the top of the middle end of the fixing block, a second serration meshing with the top of the first serration, a sliding groove formed on the inner wall of the top of the rear end of the fixing block, and a quantitative component provided on the top left side of the injection barrel.

[0007] By adopting the above technical solution, the first saw tooth meshes with the second saw tooth to limit the connection rod and control the piston. By pressing the handle, the piston rod is pressed, which drives the injection piston to move.

[0008] As a further description of the above technical solution: the quantitative component includes a branch tube, which is fixedly connected to the top of the syringe.

[0009] By adopting the above technical solution, liquid is transported through branch pipes.

[0010] As a further description of the above technical solution: a spring is sleeved on the outer ring of the left side of the piston rod, and the spring is fixedly connected to the outer wall of the right side of the handle.

[0011] By adopting the above technical solution, the piston rod can be reset by means of a spring.

[0012] As a further description of the above technical solution: a slider is slidably connected to the inner wall of the groove, and the slider is fixedly connected to the second sawtooth.

[0013] By adopting the above technical solution, the second saw tooth is lifted, and the slider slides on the inner wall of the groove.

[0014] As a further description of the above technical solution: a connecting rod is fixedly connected to the bottom of the front end of the second saw tooth, and the connecting rod is slidably connected to the sliding groove, and a piston is fixedly connected to the outer wall of the left side of the connecting rod.

[0015] By adopting the above technical solution, the second sawtooth moves, which in turn moves the connecting rod.

[0016] As a further description of the above technical solution: a one-way valve is fixedly connected through the inside of the branch pipe, and a liquid storage bottle is fixedly connected to the top of the branch pipe.

[0017] By adopting the above technical solution, the liquid is controlled through a one-way valve.

[0018] As a further description of the above technical solution: a fixed bracket is provided at the rear end of the liquid storage bottle, and the fixed bracket is fixedly connected to the liquid storage bottle.

[0019] By adopting the above technical solution, the agitator is controlled by a fixed bracket.

[0020] As a further description of the above technical solution: a stirrer is fixedly connected to the bottom of the fixed bracket, and the stirrer penetrates through the liquid storage bottle.

[0021] By adopting the above technical solution, the bottom of the liquid storage bottle has a support frame to support the liquid storage bottle.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. The present invention provides a continuous quantitative uniform sampling syringe. First, by holding the handle, and then by pressing the handle to apply a pushing force, the piston rod can be moved smoothly to the left. During this process, the piston rod will easily drive the connected injection piston to move synchronously inside the syringe, thereby smoothly and smoothly injecting the liquid that has been successfully sampled into the syringe through the needle. The spring causes the piston rod to quickly return to the initial position, so that the entire syringe is also quickly restored to a ready state for the next sampling or injection operation. The entire reset process does not require the operator to perform complicated and tedious manual reset operations, which greatly simplifies the operation process.

[0024] 2. The continuous quantitative uniform sampling syringe provided by this utility model uses a stirrer 11 to stir the liquid in the storage bottle 10 to make it uniform. This operation can effectively avoid uneven phenomena such as component stratification and precipitation that may occur due to liquid standing. It ensures that the liquid entering the syringe 1 is consistent in terms of composition and concentration, so that each sampling and subsequent injection operation can be based on a uniform liquid, which improves the accuracy and reliability of the entire operation process, ensures the stability of subsequent hydrogel multi-sheet molding, and guarantees the pass rate. Attached Figure Description

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the first saw tooth of this utility model;

[0027] Figure 3 This is a cross-sectional structural diagram of the injection tube of this utility model.

[0028] In the diagram: 1. Syringe; 2. Needle; 3. Scale line; 4. Handle; 5. Press handle; 6. Fixing bracket; 7. Fixing block; 8. Branch tube; 9. One-way valve; 10. Storage bottle; 11. Stirrer; 12. Sliding groove; 13. Connecting rod; 14. First serration; 15. Second serration; 16. Sliding groove; 17. Sliding block; 18. Spring; 19. Piston rod; 20. Injection piston; 21. Piston. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0031] Reference Figure 1 This utility model discloses a continuous quantitative uniform sampling syringe, comprising a syringe 1, a needle 2 fixedly connected to the left side of the syringe 1, and graduation lines 3 fixedly connected to the outer wall of the front end of the syringe 1. These graduation lines 3 act like precise rulers, allowing the user to intuitively and accurately observe the volume of liquid contained in the syringe 1, providing crucial reference for operations such as quantitative injection and sampling, enabling more precise control of the liquid volume during operation. A handle 4 is fixedly connected to the outer wall of the right side of the syringe 1. The handle 4 is designed with ergonomic principles in mind, its shape and size adapted to human hand grip, aiming to provide a comfortable and stable grip for better control of the entire device during injection or related operations. The handle 4 has a through-hole and sliding connection. A piston rod 19 is attached, which can move smoothly back and forth inside the handle 4. This sliding connection ensures the flexibility of the piston rod 19. A pressing handle 5 is fixedly connected to the outer right side of the piston rod 19, and an injection piston 20 is fixedly connected to the left side of the piston rod 19. When the piston rod 19 slides back and forth inside the handle 4, it will drive the injection piston 20 to move synchronously inside the syringe 1, thereby realizing the operation of pushing and drawing liquid in the syringe 1. During injection, four fingers hook the handle 4, and the thumb metacarpal bone squeezes the pressing handle 5. The pressing handle 5 pushes the piston rod 19 forward to empty the reagent in the syringe 1.

[0032] Reference Figure 2 and Figure 3A fixing block 7 is fixedly connected to the top right side of the syringe 1. A sliding groove 12 is provided inside the front end of the fixing block 7. A first serration 14 is fixedly connected to the top middle of the fixing block 7. A second serration 15 is engaged with the top of the first serration 14. A sliding groove 16 is provided on the inner wall of the top rear end of the fixing block 7. A spring 18 is fitted on the outer left side of the piston rod 19, and the spring 18 is fixedly connected to the outer right side of the handle 4. When the spring 18 is compressed and the thumb metacarpal bone is relaxed, the spring 18 returns to its original position, pushing the pressing handle 5 back. The piston rod 19 returns to its initial position, and the syringe 1 is refilled with liquid due to negative pressure, thus achieving continuous injection and avoiding hand fatigue. A slider 17 is slidably connected to the inner wall of the sliding groove 16, and the slider 17 is fixedly connected to the second serration 15. The bottom of the front end of the second serration 15 is... A connecting rod 13 is fixedly connected and slidably connected to a sliding groove 12. A piston 21 is fixedly connected to the outer left side of the connecting rod 13. Pushing the manual slider 17 causes the second sawtooth 15 to move. Each movement of the sawtooth increases or decreases the fixed volume. The slider 17 is fixedly connected to the sliding slider connecting rod 13. By manually sliding the slider 17, the movement of the sawtooth causes the slider 17 to move the connecting rod 13 inside the tube. The movement of the connecting rod 13 causes the sliding block piston 21 to slide. When the injection piston 20 is reset, it can stop at the specified position of the sliding block piston 21. By adjusting the position of the slider 17, the injection piston 20 can be limited, thereby achieving precise adjustment of the injection volume. The injection volume can be determined by the scale line 3 on the outer wall of the injection cylinder 1 when the slider 17 is sliding.

[0033] Reference Figure 3 A metering component is provided on the top left side of the syringe 1. The metering component includes a branch tube 8, which is fixedly connected to the top of the syringe 1. A one-way valve 9 is fixedly connected inside the branch tube 8 to ensure that the liquid can only flow to the syringe 1 through the branch tube 8. A storage bottle 10 is fixedly connected to the top of the branch tube 8. A fixed support 6 is provided at the rear end of the storage bottle 10 and is fixedly connected to the storage bottle 10. A stirrer 11 is fixedly connected to the bottom of the fixed support 6 and passes through the storage bottle 10. The stirrer 11 is fixed to the top through the fixed support 6, which can ensure that the liquid in the storage bottle 10 is continuously stirred evenly by the stirrer 11, solving the problem of uneven system caused by reagent sedimentation during the experiment.

[0034] Working principle: The liquid in the storage bottle 10 can be stirred by the stirrer 11 to make it uniform. Then, according to the required sampling amount, the position of the piston 21 is adjusted by operating the second serration 15 on the fixed block 7 to determine the amount of liquid that can enter the syringe 1 in the quantitative component. Due to the presence of the one-way valve 9, the liquid in the storage bottle 10 can enter the syringe 1 through the branch tube 8 to achieve quantitative sampling. Holding the handle 4, the piston rod 19 is pushed to the left by pressing the handle 5. The piston rod 19 drives the injection piston 20 to move in the syringe 1, and the liquid that has been sampled into the syringe 1 is injected out through the needle 2. After the injection is completed, the handle 5 is released and the spring 18 resets the piston rod 19, ready for the next sampling or injection operation.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous quantitative uniform sampling syringe, comprising a syringe (1), characterized in that: A needle (2) is fixedly connected to the left side of the syringe (1). A scale line (3) is fixedly connected to the outer wall of the front end of the syringe (1). A handle (4) is fixedly connected to the outer wall of the right side of the syringe (1). A piston rod (19) is slidably connected through the handle (4). A pressing handle (5) is fixedly connected to the outer wall of the right side of the piston rod (19). An injection piston (20) is fixedly connected to the left side of the piston rod (19). A fixing block (7) is fixedly connected to the top right side of the syringe (1). A sliding groove (12) is opened inside the front end of the fixing block (7). A first serration (14) is fixedly connected to the top of the middle end of the fixing block (7). A second serration (15) is meshed with the top of the first serration (14). A sliding groove (16) is opened on the inner wall of the top of the rear end of the fixing block (7). A metering component is provided on the top left side of the syringe (1).

2. The continuous quantitative uniform sampling syringe according to claim 1, characterized in that: The quantitative component includes a branch tube (8), which is fixedly connected to the top of the syringe (1).

3. The continuous quantitative uniform sampling injector according to claim 1, characterized in that: A spring (18) is fitted on the outer left side of the piston rod (19), and the spring (18) is fixedly connected to the outer right side wall of the handle (4).

4. The continuous quantitative uniform sampling syringe according to claim 1, characterized in that: The inner wall of the groove (16) is slidably connected to a slider (17), and the slider (17) is fixedly connected to the second sawtooth (15).

5. A continuous quantitative uniform sampling injector according to claim 1, characterized in that: The second saw tooth (15) is fixedly connected to the bottom of the front end of a connecting rod (13), and the connecting rod (13) is slidably connected to the sliding groove (12). A piston (21) is fixedly connected to the outer left side of the connecting rod (13).

6. A continuous quantitative uniform sampling injector according to claim 2, characterized in that: A one-way valve (9) is fixedly connected inside the branch pipe (8), and a liquid storage bottle (10) is fixedly connected to the top of the branch pipe (8).

7. A continuous quantitative uniform sampling injector according to claim 6, characterized in that: The liquid storage bottle (10) is provided with a fixed bracket (6) at its rear end, and the fixed bracket (6) is fixedly connected to the liquid storage bottle (10).

8. A continuous quantitative uniform sampling injector according to claim 7, characterized in that: The bottom of the fixed bracket (6) is fixedly connected to a stirrer (11), and the stirrer (11) penetrates the liquid storage bottle (10).

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