Injector capable of quantitatively and automatically extracting liquid
By designing an automated syringe structure and utilizing the coordination of a spring and a baffle to achieve quantitative extraction of the drug solution, the problem of frequent manual operation required by traditional syringes is solved, and the efficiency and accuracy of drug solution mixing are improved.
Patent Information
- Application Number
- CN202422219774.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-09-10
AI Technical Summary
Traditional syringes require frequent manual operation when mixing drug solutions, which leads to high work pressure and is prone to errors, making it difficult to achieve accurate mixing.
A syringe including a shell, a piston, a baffle and a spring is designed. The piston is driven to move automatically by the spring, and the baffle is used to limit the movement to achieve quantitative extraction of liquid medicine.
The automated pumping process improves work efficiency, reduces human operating errors, simplifies operating procedures, and reduces work intensity.
Smart Images
Figure CN223474115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of syringe technology, specifically a syringe capable of automatically drawing liquid in a quantitative manner. Background Technology
[0002] Centralized intravenous medication preparation is a process in which the pharmacy department, based on physician prescriptions or medication orders, and after appropriateness review and intervention by pharmacists, uses pharmaceutical professionals in a clean environment to mix and prepare intravenous medications according to aseptic techniques, transforming them into finished infusion solutions suitable for direct intravenous infusion in clinical use. This process requires a high degree of professionalism and accuracy to ensure the safety and efficacy of the medications. In the intravenous medication preparation industry, syringes are a commonly used tool. Traditional syringes, when drawing out the required proportions of various medications, require medical staff to operate only one syringe at a time and to perform repetitive work to ensure accurate proportions through frequent extractions. This significantly increases the workload of preparation personnel. Therefore, a syringe capable of automatically drawing quantitative solutions is proposed. Utility Model Content
[0003] The purpose of this invention is to provide a syringe capable of automatically drawing liquid in a quantitative manner, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a syringe capable of automatically drawing liquid in a quantitative manner, comprising a housing and a flexible tube disposed at the liquid inlet and outlet end of the housing, wherein a piston and a baffle restricting the movement range of the piston are installed inside the housing, and a spring is sleeved on the outer circumferential surface of the piston, one end of which is connected to the piston and the other end of which is connected to the housing.
[0005] As a further embodiment of this invention: the end of the housing away from the hose is detachably fitted with a retainer.
[0006] As a further embodiment of this invention, a needle is installed at the end of the hose away from the housing.
[0007] As a further embodiment of this utility model: the piston includes a piston rod and a piston head disposed at its end, the piston head being adapted to the inner cavity of the housing.
[0008] As a further embodiment of this utility model: the baffle has a hole in the middle for the piston rod to pass through, and the inner wall circumference of the hole is smaller than the outer wall circumference of the piston head.
[0009] Compared with the prior art, the beneficial effects of this utility model are:
[0010] This application automatically completes the quantitative extraction of medicine solution by removing the ferrule at the end of the housing and under the action of spring, piston and baffle. The automated extraction not only significantly improves the efficiency of medicine solution preparation, but also reduces manual operation, reduces errors caused by improper operation, simplifies the operation process for preparation personnel, and is easy to use. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the syringe of this utility model;
[0012] Figure 2 This is a schematic diagram of the piston of this utility model;
[0013] In the diagram: 1. Housing; 2. Spring; 3. Slip-on; 4. Tube; 5. Needle; 6. Piston; 7. Baffle. Detailed Implementation
[0014] 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.
[0015] Please see Figure 1-2 In this embodiment of the invention, a syringe capable of automatically drawing liquid in a quantitative manner includes a housing 1 and a flexible tube 4 disposed at the liquid inlet / outlet end of the housing 1. A needle 5 is installed at the end of the flexible tube 4 away from the housing 1. A piston 6 and a baffle 7 restricting the movement range of the piston 6 are installed inside the housing 1. A spring 2 is fitted on the outer circumference of the piston 6, with one end connected to the piston 6 and the other end connected to the housing 1. The piston 6 inside the housing 1 can be driven by the spring 2 to move automatically upward. When the needle 5 is inserted into the liquid bottle to draw liquid, the piston 6 will move to the position of the baffle 7 and stop, thereby achieving the effect of quantitatively drawing liquid. The baffle 7 can be fixed at different positions in the housing 1 according to different capacity requirements, producing automatic liquid-drawing syringes of different capacities. In use, the syringe can automatically complete the liquid drawing action, greatly improving work efficiency and reducing the workload of the dispensing personnel.
[0016] Please see Figure 1 In one embodiment, preferably, the end of the housing 1 away from the hose 4 is detachably fitted with a retainer 3. Furthermore, the retainer 3 can restrict upward movement. When the medical staff removes the retainer 3 from the end of the housing 1, the spring 2 can drive the piston 6 to move upward to automatically complete the extraction process of the medicine.
[0017] Please see Figure 1-2In one embodiment, preferably, the piston 6 includes a piston rod and a piston head disposed at its end. The piston head is adapted to the inner cavity of the housing 1. A hole for the piston rod to pass through is opened in the middle of the baffle 7. The inner wall circumference of the hole is smaller than the outer wall circumference of the piston head. Furthermore, during the upward movement of the piston 6, the piston rod will not be affected by the baffle 7 and can pass through smoothly. However, after the surface of the piston head contacts the baffle 7, it will block the piston head and prevent it from moving upward.
[0018] The working principle and usage process of this utility model are as follows: When extracting medication, first select an automatic liquid extraction syringe with the corresponding mixing ratio and capacity. Then, hospital staff gently insert the needle 5 into the corresponding medication bottle. After ensuring a secure connection, simply remove the retainer 3 at the end of the housing 1 and patiently wait for the automatic liquid extraction syringe to automatically complete the medication extraction process using the spring 2, piston 6, and baffle 7. While waiting for the extraction, medical staff can simultaneously extract the next medication ratio. After the extraction operation is completed, carefully remove the needle 5 and properly place it in the designated storage area to maintain a clean and safe working environment.
[0019] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0020] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.
Claims
1. A syringe capable of automatically drawing liquid in a quantitative manner, comprising a housing (1) and a flexible tube (4) disposed at the liquid inlet / outlet end of the housing (1), characterized in that, The housing (1) is equipped with a piston (6) and a baffle (7) that limits the movement range of the piston (6). A spring (2) with one end connected to the piston (6) and the other end connected to the housing (1) is fitted on the outer circumference of the piston (6).
2. The syringe capable of automatically drawing liquid in a quantitative manner according to claim 1, characterized in that, The end of the housing (1) away from the hose (4) is detachably fitted with a ferrule (3).
3. The syringe capable of automatically drawing liquid in a quantitative manner according to claim 1, characterized in that, The end of the hose (4) away from the housing (1) is fitted with a needle (5).
4. The syringe capable of automatically drawing liquid in a quantitative manner according to claim 1, characterized in that, The piston (6) includes a piston rod and a piston head disposed at its end, the piston head being adapted to the inner cavity of the housing (1).
5. The syringe capable of automatically drawing liquid in a quantitative manner according to claim 4, characterized in that, The baffle (7) has a hole in the middle for the piston rod to pass through, and the inner wall circumference of the hole is smaller than the outer wall circumference of the piston head.