Medical on-off valve

Abstract

This utility model belongs to the field of on / off valve technology, and particularly relates to a medical on / off valve, including a syringe, a protective shell, a needle, a needle handle, and a rubber stopper. The rubber stopper is fixedly installed on the needle handle and slidably installed inside the syringe. One end of the syringe is fixedly installed with the protective shell and the needle, with the needle located inside the protective shell. It also includes a female Luer connector, one end of which is sleeved on the needle and located inside the protective shell. A tilting block is symmetrically fixedly installed at one end of the female Luer connector, located inside the protective shell. When the entire device is not in use, the compression elasticity of the silicone rubber stopper seals the contact end face of the female Luer connector, achieving reverse pressure without leakage. The opening plunger structure ensures the infusion channel through a cross groove, while a gear-shaped channel is formed on the surface of the opening plunger. The silicone rubber stopper has strong elasticity; when squeezed and contracted, it will rebound to its original shape, ensuring the silicone rubber stopper can flatten. The compression deformation of the silicone rubber stopper achieves a sealing effect.

Description

Technical Field

[0001] This utility model belongs to the field of on / off valve technology, and particularly relates to medical on / off valves. Background Technology

[0002] Medical on / off valves (also known as medical gas on / off valves or gas regulating valves) are a crucial component of medical equipment, primarily used to control and manage airflow in gas systems. They are commonly used in hospital gas delivery systems for the delivery of medical gases such as oxygen, air, nitrogen, and nitrous oxide.

[0003] Because medical on / off valves are involved in life support and safety, their design and quality are usually subject to strict requirements:

[0004] Material requirements: Non-toxic, non-polluting, corrosion-resistant and biocompatible materials should be used.

[0005] Sealing requirements: The valve should have good sealing performance to prevent gas leakage.

[0006] Reliability: The design must take into account stability and durability during long-term use.

[0007] Compliance with standards: Complies with relevant national and international safety standards for medical gas systems (such as ISO, EN, GB, etc.).

[0008] In general, medical on / off valves play a vital role in gas supply systems in hospitals and other medical facilities, ensuring the safety, stability, and controllability of gas supply.

[0009] The main drawbacks of current medical on / off valves include wear on the sealing surface, susceptibility to vibration, narrow adjustment range, relatively low reliability, and inconvenience in use and maintenance. Specifically:

[0010] Sealing surface wear: Medical on / off valves require frequent opening and closing during operation, which can cause wear to the sealing surface, making replacement impossible. After prolonged operation, wear on the sealing surface may lead to leakage problems, affecting valve performance.

[0011] Susceptible to vibration: Medical on / off valves are quite sensitive to vibration. In environments with high vibration, the valve may open and close frequently due to vibration, leading to accelerated wear of the sealing surface and potentially causing malfunctions. Therefore, we propose the medical on / off valve. Utility Model Content

[0012] The purpose of this invention is to provide a medical on / off valve to solve the problems mentioned in the background art.

[0013] In view of this, the present invention provides a medical on / off valve, comprising a syringe, a protective shell, a needle, a needle handle, and a rubber stopper. The rubber stopper is fixedly installed on the needle handle and slidably installed inside the syringe. A protective shell and a needle are fixedly installed at one end of the syringe, with the needle located inside the protective shell. The device also includes:

[0014] A female Luer connector, one end of which is fitted onto the needle and located inside the protective shell, and an inclined block is symmetrically fixedly installed at one end of the female Luer connector and inside the protective shell, and a circular groove is opened at the other end of the female Luer connector;

[0015] An opening plunger is inserted and installed in a circular groove, and a cross groove is provided at one end of the opening plunger near the circular groove. Several grooves are provided on the circumferential wall of the opening plunger away from the cross groove.

[0016] A silicone rubber stopper, one end of which is inserted into the opening plunger;

[0017] A male Luer connector, wherein the male Luer connector is threaded onto the other end of the female Luer connector, and a silicone plug is located inside the male Luer connector.

[0018] In this technical solution, when the entire device is not in use, the compression elasticity of the silicone plug seals the contact end face of the female Luer connector, achieving reverse pressure without leakage.

[0019] When in use, the syringe, consisting of a syringe barrel, protective shell, needle, needle handle, and rubber stopper, is screwed in through a standard Luer thread. The plunger is opened and moved vertically to compress the silicone rubber stopper, forming a channel to ensure infusion.

[0020] In the above technical solution, the syringe, protective shell and needle are integrally formed, and the protective shell is provided with threads.

[0021] In this technical solution, the structure of the syringe, protective shell and needle is ensured to be stable. When the protective shell is threaded, the female Luer connector can be screwed into the protective shell with two inclined blocks, ensuring the structural stability of the female Luer connector and the protective shell. One end of the needle can be inserted into the female Luer connector and pressed against the opening plunger.

[0022] In the above technical solution, the female Luer connector and the two inclined blocks are integrally formed, and the inner wall of the circular groove is fixedly installed with a number of semi-cylinders arranged in a ring at equal intervals.

[0023] In this technical solution, the structure of the female Luer connector and the two tilting blocks is ensured to be stable, making it easy to install the female Luer connector inside or remove it from the protective shell. This solves the problem that medical valves need to be opened and closed frequently during operation, which can cause wear to the silicone plug and make it impossible to replace.

[0024] In the above technical solution, furthermore, the circumferential walls of the grooves and the opening plunger form a channel with a gear-like structure.

[0025] In this technical solution, the opening plunger structure ensures the infusion channel through the cross groove, while the contact opening plunger surface forms a gear-shaped channel.

[0026] In the above technical solution, the silicone plug has an inner groove at one end near the male Luer connector, and the cross-section of the concave position on the circumferential wall of the other end of the silicone plug has a V-shaped structure.

[0027] In this technical solution, the silicone stopper has strong elasticity. When the silicone stopper is squeezed and contracted, it will rebound and return to its original shape, ensuring that the silicone stopper can flatten. The compression deformation of the silicone stopper achieves a sealing effect.

[0028] In the above technical solution, furthermore, a plurality of triangular blocks are formed on the inner wall of the male Luer connector and on the side near the silicone plug, and the plurality of triangular blocks are arranged in a ring with equal spacing.

[0029] In this technical solution, the air inlet slot, which is composed of several triangular blocks, ensures that air can enter smoothly during the pressing process.

[0030] The beneficial effects of this utility model are:

[0031] 1. When the entire device is not in use, the compression elasticity of the silicone rubber stopper seals the contact end face of the female Luer connector, achieving reverse pressure without leakage. When in use, the syringe consisting of a syringe barrel, protective shell, needle, needle handle and rubber stopper is screwed in through the standard Luer thread. The vertical movement of the plunger compresses the silicone rubber stopper to form a channel to ensure infusion.

[0032] 2. This medical on / off valve ensures that the opening plunger structure guarantees the infusion channel through the cross groove, while the contact opening plunger surface forms a gear-shaped channel.

[0033] 3. The silicone stopper of this medical valve has strong elasticity. When the silicone stopper is squeezed and contracted, it will rebound and return to its original shape, ensuring that the silicone stopper can flatten. The compression deformation of the silicone stopper achieves a sealing effect when opening. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0035] Figure 2 This is a detailed internal structural diagram of the syringe in this utility model;

[0036] Figure 3 This is a schematic diagram of the structure of the local explosion in this utility model;

[0037] Figure 4 This is a schematic diagram of the partial explosion structure in this utility model;

[0038] Figure 5 This is a cross-sectional view of the Luer connector in this utility model;

[0039] Figure 6 This is a schematic diagram of the structure of the opening plunger in this utility model;

[0040] Figure 7 This is a schematic diagram of the structure of the female Luer connector in this utility model;

[0041] Figure 8 This is a schematic diagram of the silicone rubber stopper in this utility model.

[0042] The markings in the diagram are as follows:

[0043] 1. Syringe; 11. Protective shell; 12. Needle; 2. Needle handle; 21. Rubber stopper; 3. Female Luer connector; 31. Inclined block; 32. Circular groove; 4. Opening plunger; 41. Cross groove; 42. Groove; 5. Silicone stopper; 6. Male Luer connector. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0045] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0046] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0047] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0048] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof 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. Without further limitations, 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 that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples. Example 1:

[0049] Please see Figure 1-8 As shown in the figure, this embodiment provides a medical on / off valve, including a syringe 1, a protective shell 11, a needle 12, a needle handle 2, and a rubber stopper 21. The rubber stopper 21 is fixedly installed on the needle handle 2 and slidably installed inside the syringe 1. One end of the syringe 1 is fixedly installed with the protective shell 11 and the needle 12, and the needle 12 is located inside the protective shell 11. The device also includes:

[0050] The female Luer connector 3 has one end sleeved on the needle 12 and located inside the protective shell 11. An inclined block 31 is symmetrically fixedly installed at one end of the female Luer connector 3 and inside the protective shell 11. A circular groove 32 is opened at the other end of the female Luer connector 3.

[0051] Opening plunger 4 is inserted into the circular groove 32, and a cross groove 41 is provided at one end of the opening plunger 4 near the circular groove 32. Several grooves 42 are provided on the circumferential wall of the opening plunger 4 away from the cross groove 41.

[0052] Silicone plug 5, one end of which is inserted into the opening plunger 4;

[0053] Male Luer connector 6 is threaded onto the other end of female Luer connector 3, and silicone plug 5 is located inside male Luer connector 6.

[0054] When the entire device is not in use, the compression spring force of the silicone plug 5 seals the contact end face of the female Luer connector 3, achieving reverse pressure without leakage.

[0055] When in use, the syringe, consisting of syringe 1, protective shell 11, needle 12, needle handle 2 and rubber stopper 21, is screwed in through a standard Luer thread. This opens the plunger 4 and moves it vertically to compress the silicone rubber stopper 5, forming a channel to ensure infusion. Example 2:

[0056] This embodiment provides a medical on / off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the syringe 1, the protective shell 11 and the needle 12 are integrally formed, and the protective shell 11 is provided with threads.

[0057] In this process, the structure of the syringe 1, protective shell 11 and needle 12 is ensured to be stable. When the protective shell 11 is threaded, the female Luer connector 3 is ensured to carry the two inclined blocks 31 and be screwed into the protective shell 11, thus ensuring the structural stability of the female Luer connector 3 and the protective shell 11. One end of the needle 12 can be inserted into the female Luer connector 3 and pressed against the opening plunger 4. Example 3:

[0058] This embodiment provides a medical on / off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the female Luer connector 3 and the two inclined blocks 31 are integrally formed structures, and a number of semi-cylinders arranged in an annular and equally spaced pattern are fixedly installed on the inner wall of the circular groove 32.

[0059] Among them, ensuring the structural stability of the female Luer connector 3 and the two inclined blocks 31 makes it easy to install the female Luer connector 3 inside or remove it from the protective shell 11. This solves the problem that the medical on / off valve needs to be frequently opened and closed during operation, which would cause some wear to the silicone plug 5 and make it impossible to replace it. Example 4:

[0060] This embodiment provides a medical on / off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features: a plurality of grooves 42 and the circumferential wall of the opening plunger 4 form a channel with a gear-shaped structure.

[0061] Among them, the structure of the opening plunger 4 ensures the infusion channel through the cross groove 41, and at the same time, the surface of the contact opening plunger 4 forms a gear-shaped channel. Example 5:

[0062] This embodiment provides a medical on / off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the silicone plug 5 has an inner groove at one end near the male Luer connector 6, and the cross-section of the concave position on the circumferential wall of the other end of the silicone plug 5 has a V-shaped structure.

[0063] Among them, the silicone stopper 5 has strong elasticity. When the silicone stopper 5 is squeezed and contracted, it will rebound and return to its original shape, ensuring that the silicone stopper 5 can flatten. The silicone stopper 5 is compressed and deformed to achieve a sealing effect. Example 6:

[0064] This embodiment provides a medical on / off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features: a plurality of triangular blocks are provided on the inner wall of the male Luer connector 6 and on the side near the silicone plug 5, and the plurality of triangular blocks are arranged in a ring with equal spacing.

[0065] The air intake slot, composed of several triangular blocks, ensures that air can enter smoothly during the pressing process.

[0066] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A medical on / off valve, comprising a syringe (1), a protective shell (11), a needle (12), a needle handle (2), and a rubber stopper (21), wherein the rubber stopper (21) is fixedly mounted on the needle handle (2) and slidably mounted inside the syringe (1), wherein the protective shell (11) and the needle (12) are fixedly mounted on one end of the syringe (1), and the needle (12) is located inside the protective shell (11), characterized in that, Also includes: A female Luer connector (3) is fitted onto a needle (12) and located inside a protective shell (11). An inclined block (31) is symmetrically fixedly installed at one end of the female Luer connector (3) and inside the protective shell (11). A circular groove (32) is opened at the other end of the female Luer connector (3). Opening plunger (4), the opening plunger (4) is inserted into the circular groove (32), and a cross groove (41) is opened at one end of the opening plunger (4) near the circular groove (32), and several grooves (42) are opened on the circumferential wall of the opening plunger (4) away from the cross groove (41). A silicone rubber stopper (5), one end of which is inserted into the opening plunger (4); Male Luer connector (6) is threaded onto the other end of female Luer connector (3), and silicone plug (5) is located inside male Luer connector (6).

2. The medical on / off valve according to claim 1, characterized in that, The syringe (1), protective shell (11) and needle (12) are integrally formed, and the protective shell (11) is provided with threads.

3. The medical on / off valve according to claim 1, characterized in that, The female Luer connector (3) and the two inclined blocks (31) are integrally formed, and the inner wall of the circular groove (32) is fixedly installed with a number of semi-cylinders arranged in a ring at equal intervals.

4. The medical on / off valve according to claim 1, characterized in that, The circumferential walls of several grooves (42) and the opening plunger (4) form a channel with a gear-like structure.

5. The medical on / off valve according to claim 1, characterized in that, The silicone plug (5) has an inner groove at one end near the male Luer connector (6), and the cross-section at the concave position on the circumferential wall of the other end of the silicone plug (5) has a V-shaped structure.

6. The medical on / off valve according to claim 1, characterized in that, The inner wall of the male Luer connector (6) and the side near the silicone plug (5) are provided with a number of triangular blocks, and the number of triangular blocks are arranged in a ring with equal spacing.

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