A disposable sterile syringe

Abstract

The utility model discloses a kind of disposable sterile syringe, belong to syringe field, the upper end of injection liquid storage pipe is equipped with docking pipe, the inside of docking pipe is equipped with internal isolator, the upper end of internal isolator is connected with sealing washer, sealing of injection liquid storage pipe liquid outlet is realized by internal isolator, sealing washer.Sterile isolation mechanism design makes injection liquid storage pipe outlet sealed when not being used, prevent external bacteria or virus invasion, ensure that injection medicine is sterile, reduce injection infection risk, it is important to medical operation.Docking cover design realizes stable connection with injection liquid storage pipe, through inner hole and inner insertion needle structure, ensure that insertion needle and liquid storage bin accurately communicate, make medicine smoothly push into patient's body, reduce operation leakage risk, improve injection accuracy and safety.Inner insertion needle setting facilitates operator insertion needle, its tip bevel design expands liquid inlet, stably set in the inner hole of docking cover, prevent when operating to stab operator, ensure its safety.

Description

Technical Field

[0001] This utility model relates to the field of syringes, and in particular to a disposable sterile syringe. Background Technology

[0002] Disposable syringes, as medical consumables designed for single use, have a wide range of applications, covering multiple fields such as clinical medicine, preventive healthcare, and disease diagnosis, including but not limited to procedures such as vaccination, drug injection, and blood collection for testing. These syringes mainly consist of a syringe barrel, piston, needle, and needle hub; their manufacturing materials are typically medical-grade polypropylene (PP) to ensure biocompatibility and chemical stability. These materials not only have good transparency, allowing healthcare personnel to accurately observe the dosage, but also exhibit an excellent balance of rigidity and impact resistance, as well as superior low-temperature impact resistance, meeting the specific requirements for disposable syringe materials. During the manufacturing process, disposable syringes undergo rigorous sterilization treatments, such as ethylene oxide sterilization, to ensure the product's sterility. Furthermore, they are usually designed with aseptic individual packaging to prevent reuse, thereby effectively reducing the risk of cross-infection.

[0003] In the practical application of disposable syringes, special attention must be paid to the opening state of the syringe nozzle when the needle is not connected. If the opening is exposed to a non-sterile environment for an extended period, there is a risk of bacterial invasion, which may lead to drug contamination and consequently affect the patient's treatment outcome and safety.

[0004] Specifically, once a disposable syringe is opened, it is removed from the sterile environment provided by the packaging. If the syringe nozzle remains open and exposed to air for an extended period, especially in a non-sterile environment, airborne microorganisms may enter the syringe and contaminate the medication. This contamination can lead to adverse reactions in patients during injection, such as infection and fever, and in severe cases, may even be life-threatening.

[0005] Even in relatively clean treatment preparation rooms, the challenge of hand hygiene can increase the risk of syringe contamination due to the frequent handling of different medications and solutions by medical staff. If medical staff handle syringes without adequate hand hygiene, bacteria, viruses, and other microorganisms on their hands can enter the medication solution through the syringe opening. Utility Model Content

[0006] The main objective of this invention is to provide a disposable sterile syringe that can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A disposable sterile syringe includes an injection reservoir, a scale, a blocking ring, and an injection plunger. The scale is located on the side wall of the injection reservoir, the blocking ring is located at the lower end of the injection reservoir, and the injection plunger is inserted into the lower end opening of the injection reservoir. A reservoir is formed inside the injection reservoir, and the liquid in the reservoir is pushed by the piston at the inner end of the injection plunger.

[0009] The upper end of the injection reservoir tube is provided with a connecting pipe, and the inside of the connecting pipe is provided with an internal isolation component. The upper end of the internal isolation component is connected with a sealing gasket. The internal isolation component and the sealing gasket are used to seal the outlet of the injection reservoir tube, thereby achieving aseptic isolation operation at this location.

[0010] The upper end of the connecting tube is connected to a docking cover, and the docking cover has an inner hole. An inner needle is installed inside the inner hole. The outer end of the docking cover is connected to an outer needle through a connector. The inner needle passes through a sealing gasket to achieve communication between the needle and the liquid storage tank, which facilitates injection.

[0011] As an optional solution of this application, the injection reservoir tube, the blocking ring, the connecting tube and the internal isolation component are designed as an integrated unit. The internal isolation component includes an inner circular tube and a top isolation ring. The top isolation ring is located in the inner circular tube, and an installation chamber is formed between the top isolation ring and the connecting tube for storing the sealing gasket. The sealing gasket is connected to the internal isolation component and the connecting tube by extrusion through a metal ring.

[0012] As an optional solution of this application, the upper end of the sealing gasket is provided with a pin marking area, which is directly opposite the inner pin. The cross-section of the connecting tube is designed as a frustum, and the mating cover and inner hole are adapted to the connecting tube to realize the connection between the pin and the injection reservoir tube.

[0013] As an optional solution of this application, the inner pin and the outer pin are designed as a single unit, the tips of the inner pin and the outer pin are designed with bevels, the docking cover and the connector are designed as a single unit and are formed by injection molding, and the docking cover, the connector, the inner pin and the outer pin are fixed by heat fusion.

[0014] As an optional solution of this application, the inner needle is set in the inner hole to prevent puncture to the operator, and the cross-section of the docking cover is designed in the shape of a "T". The lower end face of the docking cover contacts the injection reservoir tube, so that the inner needle can be completely inserted into the inner round tube of the internal isolation component.

[0015] As an optional solution of this application, a sealing ring is provided at the contact end of the injection plunger and the injection reservoir tube to achieve a sterile seal at the tail end of the injection reservoir tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The aseptic isolation mechanism ensures that the outlet of the injection reservoir remains sealed when not in use, effectively preventing the intrusion of external bacteria or viruses and thus guaranteeing the sterility of the injected medication. This is crucial for medical procedures and can significantly reduce the risk of infection caused by injection.

[0018] The docking cover design not only ensures a secure connection with the injection reservoir but also guarantees accurate communication between the needle and the reservoir through its internal perforations and needle structure. This design allows the medication to be smoothly injected into the patient while reducing the risk of leakage during the procedure, thus improving the accuracy and safety of the injection.

[0019] The internal needle not only facilitates needle insertion for the operator, but also enlarges the liquid inlet through its beveled tip design. Furthermore, the internal needle is securely positioned within the inner hole of the docking cover, effectively preventing injury to the operator during operation and further ensuring operator safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is an exploded view of the overall structure of this utility model;

[0022] Figure 3 This is a cross-sectional view of the injection reservoir tube, needle, connector, and docking cover of this utility model;

[0023] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0024] In the diagram: 1. Injection reservoir tube; 2. Scale; 3. Retaining ring; 4. Injection plunger; 5. Reservoir; 6. Connecting tube; 7. Internal isolation component; 8. Sealing gasket; 9. Connecting cover; 10. Internal hole; 11. Internal pin; 12. Connector; 13. External pin. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figure 1 - Figure 4As shown, a disposable sterile syringe consists of several key components, including an injection reservoir 1, graduations 2, a retaining ring 3, and an injection plunger 4. The injection reservoir 1 has graduations 2 on its side wall for precise measurement and control of the injection dosage. The retaining ring 3 is located at the lower end of the injection reservoir 1 to ensure no liquid leakage occurs during use. The injection plunger 4 is inserted into the lower opening of the injection reservoir 1, allowing the operator to easily push the medication into the patient's body. The injection reservoir 1 forms a reservoir 5 inside; the piston at the inner end of the injection plunger 4 propels the liquid within the reservoir 5, ensuring smooth injection of the medication.

[0027] The upper end of the injection reservoir tube 1 is designed with a connecting tube 6, and the inside of the connecting tube 6 is equipped with an internal isolator 7. The upper end of the internal isolator 7 is connected to a sealing gasket 8. Through the cooperation of the internal isolator 7 and the sealing gasket 8, the outlet of the injection reservoir tube 1 can be sealed to ensure aseptic operation. The upper end of the connecting tube 6 is connected to a docking cover 9, and the docking cover 9 has an inner hole 10 inside, and an inner needle 11 is installed inside the inner hole 10. The outer end of the docking cover 9 is connected to an outer needle 13 through a connector 12. The inner needle 11 passes through the sealing gasket 8 to realize the communication between the needle and the reservoir 5, thereby facilitating the injection operation.

[0028] The injection reservoir 1, blocking ring 3, connecting tube 6, and internal isolator 7 are designed as a single unit. The internal isolator 7 includes an inner circular tube and a top isolator ring. The top isolator ring is located at the upper end of the inner circular tube, forming an installation chamber between the top isolator ring and the connecting tube 6 to store the sealing gasket 8. The sealing gasket 8 is connected to the internal isolator 7 and the connecting tube 6 by the compression of the metal ring. A pin marking area is provided at the upper end of the sealing gasket 8, which is directly opposite the inner pin 11, ensuring that the operator can accurately perform the pin insertion operation.

[0029] The cross-section of the connecting tube 6 is frustum-shaped, fitting the docking cover 9 and the inner hole 10 to achieve a smooth connection between the inner needle 11 and the injection reservoir tube 1. The inner needle 11 and the outer needle 13 are designed as a single piece, with their tips angled to reduce pain during injection. The docking cover 9 and the connector 12 are also designed as a single piece and are injection molded. The docking cover 9, connector 12, inner needle 11, and outer needle 13 are fixed together by heat fusion to ensure the stability and reliability of the overall structure.

[0030] An inner needle 11 is positioned within the inner hole 10 to prevent injury to the operator during operation. The docking cover 9 has a T-shaped cross-section, with its lower end contacting the injection reservoir tube 1, ensuring that the inner needle 11 can be fully inserted into the inner circular tube of the internal isolator 7, thereby achieving aseptic operation. A sealing ring is provided at the contact end between the injection plunger 4 and the injection reservoir tube 1, achieving an aseptic seal at the tail end of the injection reservoir tube 1, ensuring the safety and hygiene of the entire injection process.

[0031] A scale 2 is provided on the side wall of the injection reservoir 1 for measuring and controlling the injection dose. The sealing gasket 8 is installed on the upper end of the internal isolator 7, ensuring it is secure. The internal isolator 7 (including the sealing gasket 8) is inserted into the upper end of the injection reservoir 1. The connecting tube 6 is inserted into the upper end of the injection reservoir 1, ensuring it mates with the internal isolator 7. The mating cover 9 is connected to the upper end of the connecting tube 6, ensuring it mates and is secured.

[0032] Insert the inner needle 11 into the inner hole 10 of the docking cover 9, ensuring it is secure. Connect the outer needle 13 to the inner needle 11 via the connector 12, ensuring they are a single unit. Insert the injection plunger 4 into the lower opening of the injection reservoir 1, ensuring it can smoothly propel the drug.

[0033] A sealing ring is installed at the contact end between the injection plunger 4 and the injection reservoir 1 to ensure a sterile seal. The stability and reliability of the docking cover 9, connector 12, inner pin 11, and outer pin 13 are ensured by heat fusion or other fixing methods.

[0034] Ensure all syringe components are assembled correctly and aseptically. Insert the outer needle 13 into the drug container, and draw the drug into the injection reservoir 1 through the inner needle 11 and the inner hole 10. Observe the scale 2 to ensure the accurate dosage of the drawn drug.

[0035] Ensure the inner needle 11 of the docking cover 9 is fully inserted into the inner circular tube of the internal isolator 7 to prevent contamination. Slowly push the injection plunger 4 into the injection reservoir 1, propelling the medication through the inner needle 11 into the patient's body. Observe the patient's response to ensure the injection process proceeds smoothly. After injection, slowly withdraw the injection plunger 4 and the outer needle 13. Dispose of the used syringe in accordance with medical waste disposal regulations.

[0036] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A disposable sterile syringe, comprising an injection reservoir (1), a scale (2), a blocking ring (3), and an injection plunger (4), wherein the scale (2) is located on the side wall of the injection reservoir (1), the blocking ring (3) is located at the lower end of the injection reservoir (1), the injection plunger (4) is inserted into the lower end opening of the injection reservoir (1), a reservoir chamber (5) is formed inside the injection reservoir (1), and the liquid in the reservoir chamber (5) is propelled by the piston at the inner end of the injection plunger (4), characterized in that: The upper end of the injection reservoir tube (1) is provided with a connecting tube (6), and the inside of the connecting tube (6) is provided with an internal isolation component (7). The upper end of the internal isolation component (7) is connected with a sealing gasket (8). The internal isolation component (7) and the sealing gasket (8) are used to seal the outlet of the injection reservoir tube (1) and achieve aseptic isolation operation at this location. The upper end of the connecting tube (6) is connected to the docking cover (9), and the docking cover (9) has an inner hole (10) inside. The inner hole (10) is provided with an inner needle (11). The outer end of the docking cover (9) is connected to an outer needle (13) through a connector (12). The inner needle (11) passes through the sealing gasket (8) to achieve communication between the needle and the liquid storage tank (5) for convenient injection.

2. The disposable sterile syringe according to claim 1, characterized in that: The injection reservoir (1), the blocking ring (3), the connecting pipe (6) and the internal isolation component (7) are designed as a single unit. The internal isolation component (7) includes an inner round tube and a top isolation ring. The top isolation ring is located in the inner round tube. An installation chamber is formed between the top isolation ring and the connecting pipe (6) for storing the sealing gasket (8). The sealing gasket (8) is connected to the internal isolation component (7) and the connecting pipe (6) by extrusion through a metal ring.

3. A disposable sterile syringe according to claim 2, characterized in that: The upper end of the sealing gasket (8) is provided with a pin marking area, which is directly opposite the inner pin (11). The cross-section of the connecting tube (6) is a frustum-shaped design, and the connecting cover (9) and the inner hole (10) are adapted to the connecting tube (6) to realize the connection between the pin and the injection reservoir tube (1).

4. A disposable sterile syringe according to claim 3, characterized in that: The inner pin (11) and the outer pin (13) are designed as a single unit. The tips of the inner pin (11) and the outer pin (13) are designed with bevels. The docking cover (9) and the connector (12) are designed as a single unit and are formed by injection molding. The docking cover (9), the connector (12), the inner pin (11), and the outer pin (13) are fixed by heat fusion.

5. A disposable sterile syringe according to claim 4, characterized in that: The inner needle (11) is set inside the inner hole (10) to prevent the operator from being stabbed. The cross-section of the docking cover (9) is designed in the shape of a "T". The lower end face of the docking cover (9) contacts the injection reservoir tube (1) so that the inner needle (11) can be completely inserted into the inner round tube of the internal isolation component (7).

6. A disposable sterile syringe according to claim 5, characterized in that: The injection plunger (4) and the injection reservoir (1) are provided with a sealing ring at their contact ends, which achieves a sterile seal at the end of the injection reservoir (1).

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