Anti-stabbing syringe

Abstract

The utility model relates to the technical field of medical instruments, in particular to an anti-stabbing syringe which comprises a needle head and a needle cylinder, and the needle head is installed inside the needle cylinder. The needle cylinder comprises an outer cylinder body and an inner cylinder body, and the outer cylinder body and the inner cylinder body are both of a hollow structure. One end of the outer cylinder is fixedly connected with a convex edge A, the other end of the outer cylinder is fixedly connected with a sleeve seat, and the sleeve seat is fixedly connected with a protective sleeve; the inner cylinder is inserted into the outer cylinder, a piston core rod is connected to the interior of the inner cylinder, a convex edge B is fixedly connected to one end of the inner cylinder, and the convex edge B corresponds to the convex edge A in position. By means of the innovative structure of the inner barrel body and the outer barrel body, complete hiding of the needle head in the non-use state is achieved, after injection is completed, the convex edge A and the convex edge B are separated, the needle head can be driven by the spring to automatically retract into the protection sleeve, the risk that the needle head punctures personnel can be greatly reduced, and the safety of the injection is improved. And higher-level safety guarantee is provided for medical staff and patients.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a stab-proof syringe. Background Art

[0002] At present, a syringe is a medical device mainly used for injecting liquid drugs or other substances into body tissues or extracting body fluids, and is widely used in medical treatment, scientific research and other fields.

[0003] At present, in the non-use state of traditional syringes, the needle is often directly exposed, increasing the risk of accidental needle stick injuries to medical staff during operation, transfer or disposal of used syringes. Moreover, in many existing syringe designs, the needle needs to be manually retracted or covered with a protective cap after use. This process is not only cumbersome but also easily overlooked in an emergency or busy medical environment, increasing the risk of needle stick injuries.

[0004] Therefore, a stab-proof syringe is needed to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a stab-proof syringe. Through the innovative structure of the inner and outer cylinders, the utility model realizes the complete concealment of the needle in the non-use state, fundamentally eliminating the safety hazards caused by needle exposure. After the injection is completed and the convex edge A is separated from the convex edge B, the spring can drive the needle to automatically retract into the protective sleeve, which can greatly reduce the risk of needle stabbing people and provide a higher level of safety protection for medical staff and patients.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a stab-proof syringe, including a needle and a syringe barrel, and the needle is installed inside the syringe barrel;

[0007] The syringe barrel includes an outer cylinder and an inner cylinder, and both the outer cylinder and the inner cylinder are hollow structures;

[0008] One end of the outer cylinder is fixedly connected with a convex edge A, the other end of the outer cylinder is fixedly connected with a sleeve seat, and a protective sleeve is fixedly connected to the sleeve seat;

[0009] The inner cylinder is inserted inside the outer cylinder, a piston core rod is connected inside the inner cylinder, one end of the inner cylinder is fixedly connected with a convex edge B, the position of the convex edge B corresponds to the position of the convex edge A, a needle seat is integrally connected to the other end of the inner cylinder, and a needle is fixedly connected to the needle seat;

[0010] A spring is sleeved outside the needle seat, one end of the spring is connected to the inner cylinder, and the other end of the spring is connected to the outer cylinder.

[0011] Further, the convex edge A and the convex edge B are magnetic sheets with opposite magnetic poles.

[0012] Further, a limiting ring is fixedly connected to the inner wall of the outer cylinder body, and a clamping ring is fixedly connected to the inner cylinder body. Both the limiting ring and the clamping ring are made of rubber rings.

[0013] Further, the protective sleeve is a polypropylene hollow tube.

[0014] The advantages of the present utility model are as follows: The present utility model provides a stab-proof syringe, which has the following technical effects:

[0015] 1. In the present utility model, the convex edge A and the convex edge B are designed as magnetic sheets with opposite magnetic poles. When the distance between the convex edge A and the convex edge B is less than 1 cm, they will automatically adsorb, mainly to provide a stable locking state when the needle tip extends and is ready to be used. Such a design helps to ensure that the needle tip can be stably maintained in the extended position during use, increasing the stability of injection.

[0016] 2. Through the innovative structure of the inner and outer cylinder bodies, the present utility model realizes the complete internal storage of the needle tip in the non-use state, fundamentally eliminating the safety hazards caused by the exposure of the needle tip. A spring is sleeved outside the needle seat of the present utility model. One end of the spring is connected to the inner cylinder body, and the other end of the spring is connected to the outer cylinder body. After the injection is completed and the convex edge A and the convex edge B are separated, the needle tip can be automatically retracted into the protective sleeve by the spring, which can greatly reduce the risk of the needle tip stabbing people and provide a higher level of safety protection for medical staff and patients.

[0017] 3. The protective sleeve in the present utility model is selected as a polypropylene hollow tube. The material of the protective sleeve is firm and has a certain elasticity, which can effectively wrap and protect the internally stored needle tip, forming a firm physical barrier to prevent the needle tip from penetrating the outer layer and causing harm, improving the stab-proof performance of the syringe.

[0018] In summary, through the above innovative structure, the stab-proof syringe significantly reduces the common needle stick injury risk in the medical environment, which is of great significance for improving the medical safety standard and protecting the health of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a structural schematic diagram of the present utility model;

[0021] Figure 2 This is a schematic diagram of the usage state of the present utility model;

[0022] Wherein:

[0023] 1. Outer cylinder; 101. Flange A; 102. Sleeve seat;

[0024] 103. Protective sleeve; 104. Limit ring; 2. Inner cylinder;

[0025] 201. Flange B; 202. Snap ring; 203. Needle seat;

[0026] 204. Spring; 205. Needle; 3. Piston core rod. Specific embodiments

[0027] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] Figure 1 This is a schematic diagram of the structure of the present utility model, Figure 2 This is a schematic diagram of the usage state of the present utility model, as Figure 1 And Figure 2A stab-resistant syringe as shown, comprising a needle 205 and a syringe barrel. The needle 205 is installed inside the syringe barrel. The syringe barrel includes an outer barrel 1 and an inner barrel 2. Both the outer barrel 1 and the inner barrel 2 are hollow structures. In this utility model, the outer barrel 1 constitutes the outer shell of the syringe, providing protection and a movement track for the inner barrel 2 and the needle 205. At one end of the outer barrel 1 in this utility model, a convex edge A101 is fixedly connected. At the other end of the outer barrel 1, a sleeve base 102 is fixedly connected. A protective sleeve 103 is fixedly connected to the sleeve base 102. The sleeve base 102 serves as the installation base for the protective sleeve 103, providing a safe storage space for the needle 205. The protective sleeve 103 is a polypropylene hollow tube, which can effectively wrap and protect the hidden needle 205. In the non-use state, the protective sleeve 103 completely covers the needle 205, forming a physical barrier that can prevent the needle 205 from penetrating even under external pressure, greatly reducing the risk of stabbing.

[0031] In this utility model, the inner barrel 2 is inserted inside the outer barrel 1. A piston core rod 3 is connected inside the inner barrel 2. The inner barrel 2 in this utility model is a hollow structure for accommodating the piston core rod 3. The piston core rod 3 is installed inside the inner barrel 2 and can be pushed or pulled manually to achieve the extraction and injection of the liquid medicine.

[0032] The utility model fixedly connects a convex edge B201 at one end of the inner cylinder body 2, and the position of the convex edge B201 corresponds to the position of the convex edge A101. During use, the convex edge A101 can form magnetic attraction with the convex edge B201 of the inner cylinder body 2 to ensure the stable locking of the needle head 205 during use. At the same time, it is also convenient to easily recycle the needle head 205 through magnetic separation after use. The convex edge A101 and the convex edge B201 are two magnetic sheets with opposite magnetic poles. When the distance between the convex edge A101 and the convex edge B201 is less than 1 cm, the convex edge A101 and the convex edge B201 can automatically adsorb. The utility model integrally connects a needle seat 203 at the other end of the inner cylinder body 2, and a needle head 205 is fixedly connected to the needle seat 203. The needle seat 203 in the utility model serves as a bridge connecting the needle head 205 and the inner cylinder body 2. The needle seat 203 ensures the stable fixation of the needle head 205. At the same time, with the integral design with the inner cylinder body 2, the entire needle head 205 assembly can automatically retract into the protective sleeve 103 under the action of the spring 204. The utility model sleeved with a spring 204 outside the needle seat 203, one end of the spring 204 is connected with the inner cylinder body 2, and the other end of the spring 204 is connected with the outer cylinder body 1. After the injection is completed, when the convex edge A101 is separated from the convex edge B201, the spring 204 automatically pulls the inner cylinder body 2 together with the needle head 205 inward until it completely retracts into the protective sleeve 103. The design of the spring 204 improves the operation efficiency after injection, reduces the steps of manually retracting the needle head 205, and at the same time ensures that the needle head 205 is quickly and safely hidden to avoid accidental injury. The utility model fixedly connects a limit ring 104 on the inner wall of the outer cylinder body 1, and a clamping ring 202 is fixedly connected to the inner cylinder body 2. The inner diameter of the limit ring 104 is the same as the outer diameter of the clamping ring 202. Both the limit ring 104 and the clamping ring 202 are made of rubber rings. The limit ring 104 and the clamping ring 202 are used to limit the moving range of the inner cylinder body 2 in the outer cylinder body 1 to ensure the stability during the injection process and prevent excessive movement.

[0033] The using process of the utility model is as follows:

[0034] 1. Preparation stage

[0035] Check the syringe: First, check whether the syringe is intact, confirm that the protective sleeve 103 completely covers the needle head 205, and the convex edge A101 and the convex edge B201 are in an un-adsorbed state. Ensure that the piston core rod 3 can slide smoothly and the spring 204 is in the natural state before compression.

[0036] Drug loading: Remove the protective sleeve 103 to expose the needle head 205. Measure the required liquid medicine according to the doctor's advice. Create negative pressure by pulling out the piston core rod 3, or directly invert the liquid medicine bottle to make the liquid medicine flow into the inner cylinder body 2. After adjusting to the required dose, gently push the piston core rod 3 to expel air bubbles.

[0037] 2. Lock the needle head 205 and prepare for injection

[0038] Magnetic locking: Gently push the inner cylinder 2 into the outer cylinder 1, making the convex edge B201 gradually approach the convex edge A101. When the distance between the two convex edges is less than 1 cm, they will automatically attract and form a stable locking state.

[0039] 3. Injection operation

[0040] Injecting the medicine solution: After the needle 205 is stably locked, align the needle 205 with the target injection site, and then slowly push the piston core rod 3. The medicine solution will be injected into the patient's body through the needle 205. During this process, the limiting ring 104 and the clamping ring 202 work together to limit the excessive movement of the inner cylinder 2 and ensure a smooth and precise injection process.

[0041] 4. Completing the injection and retrieving the needle

[0042] Releasing the magnetic locking: After the injection is completed, pull the convex edge B201 outwards to weaken and separate the magnetic attraction between the convex edge A101 and the convex edge B201. At this time, under the push of the spring 204, the inner cylinder 2 together with the needle 205 will automatically retract quickly and safely into the inner part of the outer cylinder 1 until it is completely covered by the protective sleeve 103. This design greatly reduces the risk of the operator being stabbed when handling the used needle 205.

[0043] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stab-proof syringe, comprising a needle (205) and a syringe, wherein the needle (205) is installed inside the syringe; Features: The syringe comprises an outer cylinder (1) and an inner cylinder (2), and both the outer cylinder (1) and the inner cylinder (2) are hollow structures; A convex edge A (101) is fixedly connected to one end of the outer cylinder (1), a sleeve seat (102) is fixedly connected to the other end of the outer cylinder (1), and a protective sleeve (103) is fixedly connected to the sleeve seat (102); The inner cylinder (2) is inserted into the outer cylinder (1), a piston core rod (3) is connected to the inner cylinder (2), a convex edge B (201) is fixedly connected to one end of the inner cylinder (2), the position of the convex edge B (201) corresponds to the position of the convex edge A (101), a needle seat (203) is integrally connected to the other end of the inner cylinder (2), and a needle head (205) is fixedly connected to the needle seat (203); The needle seat (203) is provided with a spring (204) on its outer sleeve, one end of the spring (204) is connected to the inner cylinder (2), and the other end of the spring (204) is connected to the outer cylinder (1).

2. The stab-proof syringe according to claim 1, characterized in that: The convex edge A (101) and the convex edge B (201) are two magnetic sheets with opposite magnetic poles.

3. The stab-proof syringe according to claim 1, characterized in that: A limit ring (104) is fixedly connected to the inner wall of the outer cylinder (1), and a clamping ring (202) is fixedly connected to the inner cylinder (2); both the limit ring (104) and the clamping ring (202) are rubber rings.

4. The stab-proof syringe according to claim 1, characterized in that: The protective sleeve (103) is a polypropylene hollow tube.

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