Syringe assembly

Abstract

The utility model discloses an injector assembly, and relates to the technical field of medical instruments. Comprising a needle cylinder, an isolation plate is arranged in the needle cylinder, a cavity is formed in one side of the interior of the needle cylinder, sliding grooves extending into the cavity are symmetrically formed in the side, located in the cavity, of the surface of the needle cylinder, a circular ring is slidably connected to the interior of the cavity, a connecting frame is slidably connected to one side of the interior of the needle cylinder, and shifting blocks connected with the circular ring are slidably connected to the surfaces of the sliding grooves; a first magnetic ring is fixedly mounted on the inner ring surface of the circular ring, and a second magnetic ring is fixedly mounted on the outer ring surface of the connecting frame; the extending needle head is limited and fixed through the arranged limiting assembly, at the moment, the spring assembly is extruded and has elastic force, after injection is completed and the needle head is pulled out, limiting on the shifting block is relieved, and the needle head retracts into the needle cylinder again under the elastic force of the spring assembly; and the hand of a user is prevented from being injured and infected when the needle cap covers the surface of the needle head again.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to syringe assemblies. Background Technology

[0002] The syringe is a common medical device. As early as the 15th century, the Italian Cattinel described the principle of the syringe. It primarily uses a needle to draw or inject gas or liquid.

[0003] After injection, the needle of a syringe that has pierced the human body is usually exposed. The needle is usually covered with a needle cap and then retrieved. However, the process of re-capping the needle can injure the operator and cause infection. To address this problem, a syringe component is proposed. Utility Model Content

[0004] In order to solve the above problems, the purpose of this utility model is to provide a syringe assembly.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a syringe assembly, including a syringe barrel, an isolation plate provided inside the syringe barrel, a cavity opened on one side of the inside of the syringe barrel, symmetrically provided sliding grooves extending into the cavity on one side of the surface of the syringe barrel, a ring slidably connected inside the cavity, a connecting frame slidably connected on one side of the inside of the syringe barrel, a lever connected to the ring slidably connected to the surface of the sliding groove, a first magnetic ring fixedly installed on the inner ring surface of the ring, and a second magnetic ring fixedly installed on the outer ring surface of the connecting frame;

[0006] The first magnetic ring and the second magnetic ring are opposite magnetic rings that attract each other. A through groove is provided at the center of one side of the syringe. A spring assembly is fixedly installed on the side of the connecting frame facing the through groove. A needle holder is fixedly installed at the center of the connecting frame on one side of the spring assembly. A needle is fixedly installed on one side of the needle holder. Limiting components are symmetrically provided on the surface of the syringe near the needle.

[0007] Preferably, the limiting component includes limiting grooves symmetrically formed on the surface of the syringe near the slide groove, and a limiting frame is slidably connected inside the limiting groove, the limiting frame being L-shaped.

[0008] Preferably, a limiting hole is provided at the center position of the lever on the side facing the limiting frame.

[0009] Preferably, the connecting frame uses a limiting component to limit and fix the needle tip.

[0010] Preferably, a telescopic tube is provided on one side of the isolation plate, and one side of the telescopic tube is connected to the needle holder.

[0011] Preferably, a piston head is slidably connected to the other side of the syringe, a connecting rod is fixedly installed at the center of one side of the piston head, and a support plate is symmetrically fixedly installed on the side of the syringe surface away from the needle.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The extended needle is fixed by a limiting component. At this time, the spring component is compressed and has elasticity. After the injection is completed and the needle is pulled out, the limiting block is released, and the needle is retracted back into the syringe under the elasticity of the spring component, preventing injury and infection to the user's hand when the needle cap is put back on the needle surface. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0017] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle.

[0018] In the diagram: 1. Syringe; 2. Through groove; 3. Slide groove; 4. Ring; 5. Cavity; 6. Connecting frame; 7. Second magnetic ring; 8. Needle; 9. Needle seat; 10. Isolation plate; 11. Telescopic tube; 12. Piston head; 13. Connecting rod; 14. Support plate; 15. Pulley; 16. Spring assembly; 17. Limiting groove; 18. Limiting frame; 19. Limiting hole. Detailed Implementation

[0019] 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.

[0020] Example: Figures 1-3As shown, this utility model provides a syringe assembly, including a syringe 1. The syringe 1 has an internal partition plate 10, which divides the inner cavity of the syringe 1 into a receiving cavity and a liquid storage cavity. A cavity 5 is opened on one side of the inside of the syringe 1. A sliding groove 3 extending into the cavity 5 is symmetrically opened on the surface of the syringe 1 on one side of the cavity 5. A ring 4 is slidably connected inside the cavity 5. A connecting frame 6 is slidably connected to one side of the inside of the syringe 1. A lever 15 connected to the ring 4 is slidably connected to the surface of the sliding groove 3. A first magnetic ring is fixedly installed on the inner ring surface of the ring 4. A second magnetic ring 7 is fixedly installed on the outer ring surface of the connecting frame 6. Pressing the lever 15 causes the ring 4 to slide along the sliding groove 3 inside the cavity 5. Under the attraction of the first magnetic ring and the second magnetic ring 7, the connecting frame 6 also slides synchronously with the ring 4.

[0021] The first magnetic ring and the second magnetic ring 7 are opposite in polarity and attract each other. A through groove 2 is provided at the center of one side of the syringe 1. A spring assembly 16 is fixedly installed on the side of the connecting frame 6 facing the through groove 2. A needle holder 9 is fixedly installed on the center of one side of the connecting frame 6 and the spring assembly 16. A needle 8 is fixedly installed on one side of the needle holder 9. It is worth noting that the needle 8 is initially stored in the storage groove inside the syringe 1. As the connecting frame 6 slides with the ring 4, the needle 8 is extended out of the syringe 1. At this time, the spring assembly 16 is compressed and has elasticity. A limiting component is symmetrically provided on the surface of the syringe 1 near the needle 8. The connecting frame 6 limits and fixes the needle 8 through the limiting component.

[0022] The limiting component includes a limiting groove 17 symmetrically opened on the surface of the syringe 1 near the slide groove 3. A limiting frame 18 is slidably connected inside the limiting groove 17. The limiting frame 18 is L-shaped. A limiting hole 19 is opened at the center position of the push block 15 facing the limiting frame 18.

[0023] After the needle 8 is fully extended from the syringe 1, the limiting bracket 18 is slid along the limiting groove 17 to the limiting hole 19 on one side of the lever 15, thereby limiting and fixing the needle 8. After the injection is completed, the needle 8 is pulled out, and the limiting bracket 18 is reset along the limiting groove 17 and pulled out from the limiting hole 19. Under the elastic force of the spring assembly 16, the needle 8 retracts into the syringe 1.

[0024] A telescopic tube 11 is provided on one side of the isolation plate 10. One side of the telescopic tube 11 is connected to the needle seat 9. A piston head 12 is slidably connected to the other side of the syringe 1. A connecting rod 13 is fixedly installed at the center of one side of the piston head 12. A support plate 14 is symmetrically fixedly installed on the side of the syringe 1 away from the needle 8.

[0025] Pulling the connecting rod 13 causes the piston head 12 to slide in the liquid storage chamber inside the syringe 1, thereby generating suction to draw the liquid from the vial into the liquid storage chamber through the telescopic tube 11 and the needle 8.

[0026] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A syringe assembly, comprising a syringe (1), characterized in that: The syringe (1) is provided with an isolation plate (10) inside. A cavity (5) is opened on one side of the syringe (1). A sliding groove (3) extending into the cavity (5) is symmetrically opened on the surface of the syringe (1) on one side of the cavity (5). A ring (4) is slidably connected inside the cavity (5). A connecting frame (6) is slidably connected on one side of the syringe (1). A lever (15) connected to the ring (4) is slidably connected to the surface of the sliding groove (3). A first magnetic ring is fixedly installed on the inner ring surface of the ring (4). A second magnetic ring (7) is fixedly installed on the outer ring surface of the connecting frame (6). The first magnetic ring and the second magnetic ring (7) are opposite in polarity and attract each other. A through groove (2) is provided at the center of one side of the syringe (1). A spring assembly (16) is fixedly installed on the side of the connecting frame (6) facing the through groove (2). A needle holder (9) is fixedly installed at the center of one side of the connecting frame (6) on the side of the spring assembly (16). A needle (8) is fixedly installed on one side of the needle holder (9). A limiting assembly is symmetrically provided on the surface of the syringe (1) near the needle (8).

2. The syringe assembly as claimed in claim 1, characterized in that, The limiting component includes a limiting groove (17) symmetrically opened on the surface of the syringe (1) near the slide groove (3), and a limiting frame (18) is slidably connected inside the limiting groove (17), and the limiting frame (18) is L-shaped.

3. The syringe assembly as claimed in claim 2, characterized in that, The lever (15) has a limiting hole (19) at the center of the side facing the limiting frame (18).

4. The syringe assembly as claimed in claim 3, characterized in that, The connecting frame (6) limits and fixes the needle (8) through the limiting component.

5. The syringe assembly as claimed in claim 4, characterized in that, One side of the isolation plate (10) is provided with a telescopic tube (11), and one side of the telescopic tube (11) is connected to the needle seat (9).

6. The syringe assembly as claimed in claim 1, characterized in that, A piston head (12) is slidably connected to the other side of the syringe (1). A connecting rod (13) is fixedly installed at the center of one side of the piston head (12). A support plate (14) is symmetrically fixedly installed on the side of the syringe (1) away from the needle (8).

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