Disposable sealing ring type sterile syringe

Abstract

The utility model relates to a sterile syringe, in particular to a disposable sealing ring type sterile syringe. The disposable sealing ring type sterile syringe comprises a syringe barrel, a syringe needle, a push block, a push rod, a piston, a sealing ring, a connecting block and a sealing piece, the syringe needle is connected to the left end of the syringe barrel in an inserted mode, the connecting block is connected to the right end of the syringe barrel, the push rod is connected to the connecting block in a sliding mode, and the push rod is located in the syringe barrel. The left end of the push rod is connected with a piston, the left side of the piston is connected with a sealing ring, and the piston and the sealing ring are slidably connected with the inside of the syringe barrel. The sealing ring is arranged between the piston and the syringe barrel, it can be ensured that the piston is tightly attached to the inner wall of the syringe barrel, liquid medicine is effectively prevented from flowing back in the pushing or sucking process, the sealing performance between the push rod and the connecting block is further enhanced by adding the sealing piece, it is ensured that external air cannot enter the syringe barrel, and the service life of the syringe is prolonged. Therefore, the sterile state of the injector is maintained.

Description

Technical Field

[0001] The utility model relates to a sterile syringe, in particular to a disposable sealing ring type sterile syringe. Background Art

[0002] Disposable sterile syringes are widely used in the medical industry for their ease of use and hygienic safety. Users simply open the package, attach the syringe to the needle, and use it immediately, without prior sterilization. Disposable sterile syringes typically consist of a graduated barrel, a plunger, and an attached piston.

[0003] In existing syringes, the piston is usually made of rubber material and fits tightly against the wall of the syringe barrel to ensure that the liquid medicine can be discharged smoothly. However, in actual use, when the push rod is pushed, the tightness between the piston and the inner wall of the syringe barrel may decrease, resulting in a gap between the two. In addition, there is usually a lack of additional sealing structure between the push rod and the syringe barrel, which may allow air to enter the interior of the syringe barrel and affect the sterile environment.

[0004] Based on this, in order to solve the technical defects mentioned above, a disposable sealing ring type sterile syringe is now proposed. Utility Model Content

[0005] In order to overcome the disadvantages of low sealing performance and air ingress of existing syringes, the technical problem to be solved is to provide a disposable sealing ring type sterile syringe.

[0006] The technical solution is: a disposable sealing ring type sterile syringe, including a syringe barrel, a needle, a push block, a push rod, a piston, a sealing ring, a connecting block, a sealing plate and a scale line. The needle is inserted into the left end of the syringe barrel, and the right end of the syringe barrel is connected to the connecting block. The push rod is slidably connected to the connecting block. The push rod is located inside the syringe barrel, the left end of the push rod is connected to the piston, and the left side of the piston is connected to the sealing ring. The piston and the sealing ring are both slidably connected to the inside of the syringe barrel, the left side of the connecting block is connected to the sealing plate, the push rod passes through the sealing plate and fits tightly with the sealing plate, the right end of the push rod is connected to the push block, and the top of the syringe barrel is provided with a scale line.

[0007] Furthermore, it also includes a protective cap, which is sleeved on the needle.

[0008] Furthermore, a fixing block is included, and the right side of the syringe barrel is connected to the fixing block.

[0009] Furthermore, a first anti-slip groove is provided on the front and rear sides of the fixed block, and a second anti-slip groove for increasing friction is provided on the right side wall of the push block.

[0010] Furthermore, an indicator frame is included, the push block is connected to the indicator frame, and the indicator frame is located above the scale line.

[0011] The beneficial effects are as follows: 1. By arranging a sealing ring between the piston and the syringe barrel, a close fit between the piston and the inner wall of the syringe barrel can be ensured, effectively preventing the backflow of the liquid medicine during pushing or aspirating. The addition of the sealing sheet further enhances the sealing between the push rod and the connecting block, ensuring that external air does not enter the syringe barrel, thereby maintaining the sterility of the syringe;

[0012] 2. The setting of the fixed block not only makes it easier for users to hold the disposable sterile syringe firmly, but also adds a first anti-slip groove to increase the friction between the hand and the disposable sterile syringe, making the operation more stable and reliable;

[0013] 3. The indicator frame matches the scale lines on the syringe barrel, so the user can quickly and accurately read the volume of the liquid medicine when aspirating or injecting the liquid medicine, which provides convenience for accurate drug administration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 It is a partial cross-sectional view of the present utility model.

[0016] Figure 3 This is a schematic diagram of the first partial three-dimensional structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the second partial three-dimensional structure of the utility model.

[0018] The names and serial numbers of the parts in the figure are: 1_Syringe barrel, 2_Needle, 3_Protective cap, 4_Fixed block, 5_First anti-slip groove, 6_Push block, 7_Second anti-slip groove, 8_Push rod, 9_Piston, 10_Sealing ring, 11_Connecting block, 12_Sealing sheet, 13_Scale line, 14_Indicator frame. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings.

[0020] Example: Disposable sealing ring type sterile syringe, such as Figures 1-4As shown, it includes a syringe barrel 1, a needle 2, a protective cap 3, a fixed block 4, a push block 6, a push rod 8, a piston 9, a sealing ring 10, a connecting block 11, a sealing sheet 12, a scale line 13 and an indicator frame 14. The left end of the syringe barrel 1 is plugged with the needle 2, and the protective cap 3 for protection and dustproof is sleeved on the needle 2. The right side of the syringe barrel 1 is connected to the fixed block 4, which is convenient for the user to hold a disposable sterile syringe. The right end of the syringe barrel 1 is connected to the connecting block 11, and the connecting block 11 is slidably connected to the push rod 8. The push rod 8 is located inside the syringe barrel 1, and the left end of the push rod 8 is connected to the piston 9. A sealing ring 10 is connected to the left side of the plug 9. The piston 9 and the sealing ring 10 are both slidably connected to the inside of the syringe barrel 1. A sealing plate 12 is connected to the left side of the connecting block 11. The push rod 8 passes through the sealing plate 12 and fits tightly with the sealing plate 12. The right end of the push rod 8 is connected to the push block 6. A first anti-slip groove 5 is provided on the front and back sides of the fixed block 4 to increase the friction between the hand and the fixed block 4. A second anti-slip groove 7 for increasing friction is provided on the right side wall of the push block 6. A scale line 13 is provided on the top of the syringe barrel 1, and an indicator frame 14 is connected to the push block 6. The indicator frame 14 is located above the scale line 13.

[0021] When using the device, first remove the protective cap 3 on the needle 2, then hold the fixed block 4 with one hand and pinch the push block 6 with the other hand. The first anti-slip groove 5 and the second anti-slip groove 7 play an anti-slip role. Then the needle 2 can be inserted into the medicine bottle, and the push block 6 can be pulled to drive the piston 9 to move, and the medicine liquid can be pumped into the syringe barrel 1. The sealing ring 10 can ensure the sealing between the piston 9 and the inner wall of the syringe barrel 1, and the sealing piece 12 can ensure the sealing between the push rod 8 and the connecting block 11 to ensure that there is no air leakage or backflow of the medicine liquid. The medicine liquid can be pumped and injected by pushing or pulling the push block 6. When the push block 6 moves, the indicator frame 14 is also driven to move. The indicator frame 14 moves along the scale line 13. The amount of the medicine liquid can be known by checking the position of the indicator frame 14 pointing to the scale line 13, which is convenient for accurately controlling the injection of the medicine liquid. The setting of the fixed block 4 is convenient for the user to hold the disposable sterile syringe tightly. After use, the disposable sterile syringe can be placed in a special collection box for unified disposal.

[0022] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A disposable sealing ring sterile syringe, characterized in that: The invention comprises a syringe barrel (1), a needle (2), a push block (6), a push rod (8), a piston (9), a sealing ring (10), a connecting block (11), a sealing sheet (12) and a scale line (13). The left end of the syringe barrel (1) is plugged with the needle (2), the right end of the syringe barrel (1) is connected with the connecting block (11), the connecting block (11) is slidably connected with the push rod (8), the push rod (8) is located inside the syringe barrel (1), the left end of the push rod (8) is connected with the piston (9), the left side of the piston (9) is connected with the sealing ring (10), the piston (9) and the sealing ring (10) are both slidably connected to the inside of the syringe barrel (1), the left side of the connecting block (11) is connected with the sealing sheet (12), the push rod (8) passes through the sealing sheet (12) and is tightly fitted with the sealing sheet (12), the right end of the push rod (8) is connected with the push block (6), and the top of the syringe barrel (1) is provided with a scale line (13).

2. The disposable sealing ring type sterile syringe according to claim 1, characterized in that: The needle (2) is also provided with a protective cap (3). The protective cap (3) is sleeved on the needle (2).

3. The disposable sealing ring type sterile syringe according to claim 2, characterized in that: It also includes a fixing block (4), and the right side of the syringe barrel (1) is connected to the fixing block (4).

4. The disposable sealing ring type sterile syringe according to claim 3, characterized in that: The front and rear sides of the fixed block (4) are provided with first anti-slip grooves (5), and the right side wall of the push block (6) is provided with a second anti-slip groove (7) for increasing friction.

5. The disposable sealing ring type sterile syringe according to claim 4, characterized in that: The push block (6) is also provided with an indicator frame (14), which is connected to the indicator frame (14) and is located above the scale line (13).

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