A split pre-filled syringe

Abstract

The utility model discloses a kind of split prefilled syringes, it includes placing pipe, the needle is arranged on one side of the placing pipe, the inside of the placing pipe movably sheaths embedding column, the inside of the placing pipe is provided with No. 2 placing groove, the inside of No. 2 placing groove is fixedly connected with sleeve, the inside of the sleeve movably sheaths telescopic rod, the outside of the sleeve movably sheaths spring, the telescopic rod upper end is fixedly connected in embedding column, one side of the placing pipe is fixedly connected with No. 2 connecting seat, the inside of No. 2 connecting seat is provided with limiting post, No. 2 connecting seat is embedded with No. 1 connecting seat in the inside, No. 1 connecting seat lower end is provided with No. 1 embedding groove, the limiting post is embedded with No. 1 embedding groove. By the above structure, when new, it can be firmly fixed to align embedding position, tool is not needed throughout, it is simple and quick to operate, greatly improve medicine tank replacement efficiency, support needle quick disassembly, convenient to replace and convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, and in particular to a split pre-filled syringe. Background Technology

[0002] Pre-filled syringes are medical devices in which medication is pre-filled into the syringe barrel. They feature a modular design, allowing for assembly of components as needed before use. This eliminates the need for on-site medication extraction, reducing operational steps and the risk of contamination, ensuring accurate dosage, and addressing the issues of cumbersome operation and contamination associated with traditional syringes. This enhances the safety and convenience of medication administration.

[0003] Traditional medicine containers are mostly fixed by screws or clips, which requires repeated rotation or force to pry during replacement. This is cumbersome and can easily cause wear and tear on parts due to improper force. During reinstallation, misalignment may affect the stability of the fixation and prolong the replacement time. Traditional needles often use threaded or interference fit connections. Disassembly requires repeated rotation or force to insert and pull, which is cumbersome and can easily lead to poor channel sealing due to improper connection. Replacement may also increase the risk of contamination due to the time-consuming operation. Utility Model Content

[0004] The purpose of this invention is to solve at least one of the technical problems existing in the prior art, and to provide a split pre-filled syringe that solves the problems of cumbersome operation of changing medicine canisters and needles, easy wear of parts, poor sealing, unstable fixation, and increased risk of contamination due to time consumption.

[0005] This utility model also provides a split pre-filled syringe, including a placement tube, a needle on one side of the placement tube, a fitting post movably fitted inside the placement tube, a second placement groove inside the placement tube, a sleeve fixedly connected inside the second placement groove, a telescopic rod movably fitted inside the sleeve, a spring movably fitted outside the sleeve, and the upper end of the telescopic rod fixedly connected to the fitting post.

[0006] According to the present invention, a split pre-filled syringe is provided, wherein a second connecting seat is fixedly connected to one side of the placement tube, a limiting post is provided inside the second connecting seat, a first connecting seat is fitted inside the second connecting seat, a first fitting groove is provided at the lower end of the first connecting seat, the limiting post is fitted into the first fitting groove, and the upper end of the first fitting groove is fixedly connected to the needle.

[0007] According to the present invention, a split pre-filled syringe has a push rod movably fitted at the lower end of the placement tube.

[0008] According to the present invention, a split pre-filled syringe has a through needle fixedly connected to one side of the placement tube.

[0009] According to the present invention, a split pre-filled syringe has a first placement groove inside the placement tube, a medicine container is movably fitted inside the first placement groove, a rubber stopper is fixedly connected to one side inside the medicine container, and the penetrating needle passes through the rubber stopper.

[0010] According to the present invention, a split pre-filled syringe has a push block movably mounted on the other side of the medicine container, and one side of the push block is in close contact with the push rod.

[0011] According to the present invention, a split pre-filled syringe has a second fitting groove on one side of the medicine container, and the second fitting groove fits into the fitting post.

[0012] Beneficial effects: 1. The medicine container is fixed by fitting into the fitting post inside the tube through the fitting groove. When replacing, you can easily remove the old medicine container by simply separating the two fitting. When installing the new one, you can fix it firmly by aligning it with the fitting position. No tools are required throughout the process. The operation is simple and fast, which greatly improves the efficiency of medicine container replacement.

[0013] 2. The needle is fitted and fixed with the limiting post of the tube placement connector through the fitting groove of the connector, which not only ensures the stability of the drug output channel, but also supports quick disassembly of the needle, making it easy to replace and convenient to operate. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a perspective view of a split pre-filled syringe proposed in this utility model; Figure 2 This is a cross-sectional view of a split pre-filled syringe placement tube proposed in this utility model; Figure 3 This is a perspective view of the first connecting seat of a split pre-filled syringe proposed in this utility model; Figure 4 The present utility model proposes Figure 1 Enlarged view of point A in the middle.

[0015] Legend: 1. Needle; 2. Placement tube; 3. Medicine container; 4. Push rod; 5. Penetrating needle; 6. Rubber stopper; 7. Placement slot 1; 8. Placement slot 2; 9. Fitting post; 10. Telescopic rod; 11. Spring; 12. Sleeve; 13. Fitting slot 1; 14. Connecting seat 1; 15. Connecting seat 2; 16. Limiting post; 17. Push block; 18. Fitting slot 2. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-4 This utility model provides a split pre-filled syringe, which includes a placement tube 2, a needle 1 on one side of the placement tube 2, a fitting post 9 movably fitted inside the placement tube 2, a second placement groove 8 inside the placement tube 2, a sleeve 12 fixedly connected inside the second placement groove 8, a telescopic rod 10 movably fitted inside the sleeve 12, a spring 11 movably fitted outside the sleeve 12, and the upper end of the telescopic rod 10 fixedly connected to the fitting post 9.

[0018] Specifically, the placement tube 2 serves as the mounting and bearing base for all internal and external components. The needle 1 is the execution component for puncture and drug injection, and is the channel for drug output. The fitting column 9 is used to cooperate with the fitting structure of the subsequent medicine container 3 to achieve the positioning of the medicine container 3. The second placement slot 8 provides a stable installation position for the sleeve 12 to prevent it from shifting during use. The sleeve 12 provides guidance for the telescopic movement of the telescopic rod 10 and restricts its direction of movement. The telescopic rod 10 can extend and retract along the axial direction of the sleeve 12, transmitting the movement of the fitting column 9 and cooperating with the spring 11 to achieve reset. The spring 11 provides a reset force for the fitting column 9 through its own elastic deformation, ensuring that the fitting column 9 returns to its initial position when no external force is applied.

[0019] A second connecting seat 15 is fixedly connected to one side of the placement tube 2. A limiting post 16 is provided inside the second connecting seat 15. A first connecting seat 14 is fitted inside the second connecting seat 15. A first fitting groove 13 is provided at the lower end of the first connecting seat 14. The limiting post 16 fits into the first fitting groove 13. The upper end of the first fitting groove 13 is fixedly connected to the needle 1.

[0020] Specifically, a limiting post 16 is provided inside the second connecting seat 15 to provide fitting space for the first connecting seat 14. The limiting post 16 matches the first fitting groove 13 of the first connecting seat 14, and the movement of the first connecting seat 14 is restricted by the fitting relationship. The first connecting seat 14 is fitted inside the second connecting seat 15, with the first fitting groove 13 provided at the lower end and the connecting needle 1 fixed at the upper end. The installation and fixation of the needle 1 is achieved by fitting with the second connecting seat 15.

[0021] The lower end of the placement tube 2 is fitted with a push rod 4.

[0022] Specifically, the push rod 4 is manually pushed to transmit the thrust to the subsequent push block 17, thereby squeezing the liquid medicine in the medicine tank 3.

[0023] A through-needle 5 is fixedly connected to one side of the inside of the placement tube 2.

[0024] Specifically, one end of the penetrating needle 5 faces the direction of the medicine container 3, and the other end is connected to the channel between the placement tube 2 and the needle 1. It is mainly used to puncture the sealing structure of the medicine container 3 so that the medicine liquid inside the medicine container 3 can flow out.

[0025] The placement tube 2 has a placement slot 7 inside, and a medicine container 3 is movably fitted inside the placement slot 7. A rubber stopper 6 is fixedly connected to one side of the medicine container 3, and a penetrating needle 5 penetrates the rubber stopper 6.

[0026] Specifically, the first placement slot 7 provides a stable position for the medicine container 3, ensuring that the medicine container 3 does not shift during use. The medicine container 3 contains the medicine liquid, and the medicine liquid is output through the action of the external structure. When not in use, the rubber stopper 6 seals the opening of the medicine container 3 to prevent the medicine liquid from leaking. When in use, it can be punctured by the penetrating needle 5. After puncture, it can still fit tightly with the penetrating needle 5 to prevent the medicine liquid from leaking during circulation.

[0027] Inside the medicine container 3, on the other side, there is a movable push block 17, one side of which is in close contact with the push rod 4.

[0028] Specifically, the pusher block 17 moves with the push rod 4, squeezing the liquid medicine in the medicine container 3, so that the liquid medicine flows through the through needle 5 and the placement tube 2 to the needle tip 1.

[0029] The medicine container 3 has a second fitting groove 18 on one side, which fits into the fitting column 9.

[0030] Specifically, the second fitting groove 18 fixes the medicine container 3 in the first placement groove 7 of the placement tube 2 through the fitting relationship, preventing the medicine container 3 from shifting under the action of the push block 17, ensuring that the penetrating needle 5 always maintains the piercing state with the rubber stopper 6, and ensuring smooth flow of medicine.

[0031] Working principle: The medicine container 3 is fitted into the fitting post 9 inside the placement tube 2 via the second fitting groove 18 on one side, and fixed in the first placement groove 7. At this time, the penetrating needle 5 has penetrated the rubber stopper 6 on one side of the medicine container 3. The rubber stopper 6 and the penetrating needle 5 are tightly fitted to prevent leakage. The push rod 4 at the lower end of the placement tube 2 is manually pushed. The push rod 4 transmits the pushing force to the pushing block 17 inside the medicine container 3. The pushing block 17 moves along the axial direction of the medicine container 3 to squeeze the internal medicine liquid. Because the medicine container 3 is limited by the fitting relationship between the fitting post 9 and the second fitting groove 18, it will not shift with the pushing block 17, ensuring that the penetrating needle 5 always maintains piercing of the rubber stopper 6. In this state, under pressure, the liquid medicine flows through the penetrating needle 5 into the channel connecting the placement tube 2 and the needle 1, and is then injected through the needle 1. The telescopic rod 10 connected to the upper end of the fitting column 9 can extend and retract along the sleeve 12 axially. The spring 11 outside the sleeve 12 provides a restoring force to the fitting column 9 through elastic deformation, preventing the fitting column 9 from shifting and affecting the fixation of the medicine container 3. The needle 1 is fitted and fixed with the limiting post 16 of the second connecting seat 15 on the placement tube 2 through the first fitting groove 13 of the first connecting seat 14. This fitting structure also supports the disassembly of the needle 1, ensuring the stability of the liquid medicine output channel and facilitating the replacement of the needle 1.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A split-type pre-filled syringe, comprising a placement tube (2), characterized in that: A needle (1) is provided on one side of the placement tube (2). A fitting post (9) is movably fitted inside the placement tube (2). A second placement groove (8) is opened inside the placement tube (2). A sleeve (12) is fixedly connected inside the second placement groove (8). A telescopic rod (10) is movably fitted inside the sleeve (12). A spring (11) is movably fitted outside the sleeve (12). The upper end of the telescopic rod (10) is fixedly connected to the fitting post (9).

2. A split-type pre-filled syringe according to claim 1, characterized in that, A second connecting seat (15) is fixedly connected to one side of the placement tube (2). A limiting post (16) is provided inside the second connecting seat (15). A first connecting seat (14) is fitted inside the second connecting seat (15). A first fitting groove (13) is provided at the lower end of the first connecting seat (14). The limiting post (16) fits into the first fitting groove (13). The upper end of the first fitting groove (13) is fixedly connected to the needle (1).

3. A split-type pre-filled syringe according to claim 1, characterized in that, The lower end of the placement tube (2) is fitted with a push rod (4).

4. A split-type pre-filled syringe according to claim 1, characterized in that, A through-needle (5) is fixedly connected to one side of the inside of the placement tube (2).

5. A split-type pre-filled syringe according to claim 4, characterized in that, The placement tube (2) has a first placement slot (7) inside, and a medicine container (3) is movably fitted inside the first placement slot (7). A rubber stopper (6) is fixedly connected to one side of the medicine container (3), and the penetrating needle (5) penetrates the rubber stopper (6).

6. A split-type pre-filled syringe according to claim 5, characterized in that, Inside the medicine container (3), on the other side, a push block (17) is movably fitted, and one side of the push block (17) is in close contact with the push rod (4).

7. A split-type pre-filled syringe according to claim 6, characterized in that, The medicine container (3) has a second fitting groove (18) on one side, which fits into the fitting column (9).

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