Disposable rubber plug type multichannel active opening on-off valve

Abstract

The invention discloses a disposable rubber plug type multichannel active opening and closing valve which comprises a valve body, an outer connector, a female Luer connector, a valve rod, a rubber plug, an opening and closing table, a liquid passing table and a liquid passing groove. The valve body is provided with a main channel, the outer connector is provided with a branch channel and communicated with the main channel, and the female Luer connector is fixed to the outer connector in a sealed mode. When the valve rod is pushed, the rubber plug is compressed, the opening-closing table is separated from the inner end face of the female Luer taper, and liquid sequentially passes through the liquid passing groove and the branch channel to flow into the main channel through the female Luer taper. The valve rod rebounds by means of the elastic restoring force of the rubber plug, and the opening-closing table is tightly sealed to block circulation. By optimizing the structural design, active opening and closing and precise control are achieved, sealing is reliable, liquid residues are few, the multi-channel injection requirement is met, installation is convenient and fast, the medical safety standard is met, and the device is suitable for medical injection and infusion scenes.

Description

Technical Field

[0001] This invention belongs to the field of medical valve technology, and particularly relates to a disposable rubber plug type multi-channel active opening and closing valve. Background Technology

[0002] In medical injection and infusion fields, multi-channel on / off valves are often used to selectively open and close fluids and facilitate their combined delivery to meet the needs of precise injection or mixing of multiple fluids. Existing multi-channel on / off valves mostly employ mechanical valve structures, whose sealing performance is easily affected by component wear, leading to fluid leakage after prolonged use, resulting in drug loss or contamination. Furthermore, some valves rely on manual tightening or snap-lock closure, which is cumbersome and makes it difficult to achieve active and rapid on / off control. Especially when frequent channel switching is required, operational delays can negatively impact treatment efficiency.

[0003] Furthermore, traditional valves often use threaded connections or adhesive seals at their joints. Threaded connections are prone to leakage due to incomplete sealing, while adhesives may introduce harmful substances that contaminate the medication, failing to meet medical safety standards. Additionally, the internal flow channels of existing valves often have dead zones, resulting in large amounts of residual liquid. This not only wastes the medication but also poses a risk of cross-contamination due to the deterioration of the residual liquid, making it difficult to meet the safety, convenience, and low-waste requirements of disposable medical devices. Summary of the Invention

[0004] The purpose of this invention is to provide a disposable rubber plug type multi-channel active opening and closing valve to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a disposable rubber plug type multi-channel active opening and closing valve, comprising a valve body, wherein a main channel for liquid passage is formed inside the valve body, and at least one external connector is provided on the valve body, wherein a branch channel is formed inside the external connector, and the branch channel communicates with the main channel; further comprising a female Luer connector that is inserted and adapted to fit inside the external connector, wherein the inner wall of the external connector is sealed and fixed to the outer wall of the female Luer connector; a valve stem disposed inside the female Luer connector and movable along its axial direction; an opening and closing platform disposed inside the female Luer connector and located between the valve stem and the external connector; and a valve stem that is connected to the main channel. A rubber plug is embedded in the valve stem and fixedly connected to it. A liquid-passing platform is set inside the outer connector. At least one liquid-passing groove is opened on the liquid-passing platform, and the liquid-passing groove communicates with the sub-channel. When the valve stem is pushed, the rubber plug is compressed, causing the opening and closing platform to disengage from the inner end face of the female Luer connector. Liquid enters from the female Luer connector, passes sequentially between the female Luer connector and the valve stem, between the rubber plug and the female Luer connector, and then passes through the liquid-passing groove into the sub-channel and then into the main channel. After the valve stem rebounds, the opening and closing platform is pressed tightly against the inner end face of the female Luer connector, and the valve port closes to block the flow of liquid.

[0006] In a further embodiment of the present invention, the inner wall of the outer connector and the outer wall of the female Luer connector are sealed and fixed by ultrasonic welding.

[0007] In a further embodiment of the present invention, the female Luer connector is provided with a boss located inside the welding position to prevent overflow during welding.

[0008] In a further embodiment of the present invention, the liquid-passing tank is arranged in a circular array along the center of the liquid-passing platform.

[0009] In a further embodiment of the present invention, the rubber stopper is an elastic rubber stopper.

[0010] In a further embodiment of the present invention, the valve body is provided with at least one external connector, and each external connector is provided with a female Luer connector, valve stem, opening and closing platform, rubber plug, liquid passage platform and liquid passage groove.

[0011] In a further embodiment of the present invention, when the valve stem rebounds, the rebound is achieved by the elastic restoring force of the rubber plug.

[0012] In a further embodiment of the present invention, the opening and closing platform is an annular opening and closing platform, which is annularly sealed with the inner end face of the female Luer connector.

[0013] In a further embodiment of the present invention, the female Luer connector is used to connect with an external connector device, and the on / off control of liquid injection is achieved by pushing the valve stem.

[0014] In a further embodiment of the present invention, the rubber stopper is made of medical-grade elastic rubber material, which has both sealing and elastic rebound functions, and the liquid flow rate is controlled by the distance the valve stem is pushed.

[0015] The beneficial effects of this invention are: Active opening and closing and precise control: The valve port can be actively opened and closed by the axially movable valve stem in combination with the elastic restoring force of the rubber stopper. There is no need for manual tightening or buckling. Pushing the valve stem opens the channel and it automatically springs back to close after being released. The operation is convenient and the response is fast, which can meet the needs of rapid injection or channel switching. The liquid flow rate can be controlled by the distance the valve stem is pushed.

[0016] Excellent sealing performance: The external connector and the female Luer connector are fixedly connected by a seal. Combined with the tight fit between the opening and closing platform and the inner end face of the female Luer connector, a multi-seal structure is formed, which effectively avoids liquid leakage and reduces the risk of liquid loss and contamination. At the same time, the rubber stopper is embedded and fixed to the valve stem, which further enhances the sealing reliability of the internal flow channel.

[0017] Reduced liquid residue and loss: The liquid flow path (between the female Luer connector and the valve stem, between the rubber stopper and the female Luer connector, through the liquid trough to the branch channel and then to the main channel) is designed to be simple and smooth with no obvious dead corners, which can minimize liquid residue; together with the tight closure of the valve port, it further reduces the loss of drug during the injection process and improves the liquid utilization rate.

[0018] Compatibility and safety: It adopts a Luer connector structure, which can be efficiently adapted to external connector devices to meet the needs of multi-channel connection; the overall structure is suitable for single-use scenarios, avoiding the risk of cross-contamination caused by reuse, and the connection of each component is stable and meets medical safety standards.

[0019] Multi-channel integration advantages: Multiple external connectors can be installed on the valve body, each with an independent opening and closing structure, enabling separate control and combined delivery of multiple liquids. This is suitable for complex injection scenarios and enhances the integration and multi-functionality of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention; Figure 2 yes Figure 1 Explosion structure diagram Figure 1 ; Figure 3 yes Figure 1 Explosion structure diagram Figure 2 ; Figure 4 This is a schematic diagram of the overall structure of another embodiment of the present invention; Figure 5 This is a schematic diagram of the overall structure of another embodiment of the present invention. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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 use of 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 and are not limited in number; for example, a 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.

[0024] 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.

[0025] 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.

[0026] This embodiment provides a disposable rubber plug type multi-channel active opening and closing valve, including a valve body 1, the valve body 1 having a main channel 12 for liquid passage formed inside, the valve body 1 having at least one external connector 2, the external connector 2 having a branch channel 10 inside, the branch channel 10 communicating with the main channel 12; it also includes a female Luer connector 3 that is inserted and adapted to the external connector 2, the inner wall of the external connector 2 being sealed and fixed with the outer wall of the female Luer connector 3; a valve stem 4 disposed inside the female Luer connector 3 and movable along its axial direction; and an opening and closing platform 6 disposed inside the female Luer connector 3 and located between the valve stem 4 and the external connector 2, embedded with the valve stem 4. A fixed rubber stopper 5 is disposed within a liquid-passing platform 9 in the external connector 2. At least one liquid-passing groove 11 is formed on the liquid-passing platform 9, and the liquid-passing groove 11 communicates with the branch channel 10. When the valve stem 4 is pushed, the rubber stopper 5 is compressed, causing the opening / closing platform 6 to disengage from the inner end face of the female Luer connector 3. Liquid enters from the female Luer connector 3, passes sequentially between the female Luer connector 3 and the valve stem 4, and between the rubber stopper 5 and the female Luer connector 3, then passes through the liquid-passing groove 11 into the branch channel 10 and finally into the main channel 12. After the valve stem 4 rebounds, the opening / closing platform 6 presses tightly against the inner end face of the female Luer connector 3, and the valve closes, blocking liquid flow. This invention has three embodiments, the main difference being the number and placement of the external connectors 2, while the operating principle remains the same: the liquid flow rate is controlled by the distance the valve stem 4 is pushed.

[0027] In this embodiment, the inner wall of the outer connector 2 and the outer wall of the female Luer connector 3 are further sealed and fixed by ultrasonic welding. Using ultrasonic welding, the localized high temperature generated by high-frequency vibration can quickly fuse the connection between the outer connector 2 and the female Luer connector 3, forming a tight and stable sealing structure. Compared with traditional threaded connections or adhesive seals, this not only eliminates the cumbersome threading operation and avoids the potential for loose sealing in threaded connections, but also eliminates the risk of harmful substance contamination from adhesives, ensuring the sealing performance and medical safety of the connection. Furthermore, the welding process is highly efficient and fast, which helps improve production efficiency.

[0028] In this embodiment, the female Luer connector 3 is further provided with a boss 7 located inside the welding position 8 to prevent overflow during welding. During ultrasonic welding, the contact area between the outer connector 2 and the female Luer connector 3 will generate molten material at high temperature, i.e., overflow. The boss 7, located inside the welding position 8, can effectively block this overflow, preventing it from entering the internal cavity of the female Luer connector 3, avoiding contamination of the internal flow channel or affecting the normal movement of components such as the valve stem 4 and the rubber plug 5, ensuring the cleanliness and operational reliability of the valve, and reducing the product defect rate caused by overflow.

[0029] In this embodiment, the liquid-passing troughs 11 are further arranged in a circular array along the center of the liquid-passing platform 9. This arrangement of the liquid-passing troughs 11 along the center of the liquid-passing platform 9 allows for a more uniform distribution of liquid as it passes through the platform 9, avoiding problems such as excessively high local flow rates or pressures caused by uneven distribution of the troughs 11. It also reduces liquid stagnation and residue at the platform 9. Furthermore, the uniformly distributed troughs 11 improve liquid flow efficiency, ensuring that liquid can smoothly enter the branch channel 10 from the troughs 11 and then flow into the main channel 12, meeting the needs of multi-channel liquid confluence and transportation.

[0030] In this embodiment, the rubber stopper 5 is further described as an elastic rubber stopper. The elastic rubber stopper 5 has good elastic deformation capability. When the valve stem 4 is pushed, the rubber stopper 5 can be smoothly compressed, providing sufficient space for the axial movement of the valve stem 4, allowing the opening and closing platform 6 to smoothly disengage from the inner end face of the female Luer connector 3, thus opening the valve port. When the valve stem 4 rebounds, the elastic rubber stopper 5 can push the valve stem 4 back to its original position using its own elastic restoring force, ensuring that the opening and closing platform 6 tightly fits the inner end face of the female Luer connector 3, achieving reliable closure of the valve port. Simultaneously, the elastic rubber stopper 5 can also form a good seal with the inner wall of the female Luer connector 3, preventing liquid leakage between the rubber stopper 5 and the female Luer connector 3 during flow.

[0031] In this embodiment, the valve body 1 is further provided with multiple external connectors 2, each of which is equipped with a female Luer connector 3, a valve stem 4, an opening / closing platform 6, a rubber stopper 5, a liquid passage platform 9, and a liquid passage groove 11. The valve body 1 has multiple external connectors 2, and each external connector 2 is equipped with a complete set of components including a female Luer connector 3, a valve stem 4, an opening / closing platform 6, a rubber stopper 5, a liquid passage platform 9, and a liquid passage groove 11, forming multiple independent channel control units. This structural design allows the valve to connect to multiple external connector devices simultaneously, enabling the separate delivery and control of multiple groups of liquids, meeting the needs of multi-channel pipelines in the medical field. By operating the valve stems 4 of different channels, the flow of each group of liquids can be flexibly controlled, achieving selective injection or mixing of liquids.

[0032] In this embodiment, the valve stem 4 rebounds via the elastic restoring force of the rubber plug 5. The rubber plug 5 is embedded and fixedly connected to the valve stem 4. When the valve stem 4 is pushed, the rubber plug 5 is compressed and stores elastic potential energy. When the external force applied to the valve stem 4 is removed, the rubber plug 5 releases the stored elastic potential energy, generating an elastic restoring force that pushes the valve stem 4 to move in the opposite direction along the axial direction, achieving automatic rebound. This method of using the elastic restoring force of the rubber plug 5 to achieve the rebound of the valve stem 4 eliminates the need for additional elastic components such as springs, simplifying the internal structure of the valve, reducing the number of parts, lowering assembly difficulty and production costs, and avoiding rebound failures caused by the failure of additional elastic components, thus improving the operational reliability of the valve.

[0033] In this embodiment, the opening and closing platform 6 is further described as an annular platform, which annularly seals with the inner end face of the female Luer connector 3. The annular opening and closing platform 6 and the inner end face of the female Luer connector 3 form an annular sealing contact area. Compared to a non-annular sealing structure, the annular sealing fit significantly increases the sealing area, improves sealing reliability, and effectively prevents liquid leakage between the opening and closing platform 6 and the inner end face of the female Luer connector 3 when the valve is closed. Simultaneously, the annular structure ensures more uniform sealing contact, avoiding the problem of localized incomplete sealing, and ensuring that the valve can be completely closed after the valve stem 4 rebounds, blocking liquid flow and guaranteeing the sealing performance of the opening and closing valve.

[0034] In this embodiment, the female Luer connector 3 is further used to connect with external connector devices, and the on / off control of liquid injection is achieved by pushing the valve stem 4. The female Luer connector 3 adopts a standardized Luer interface design, which can achieve quick and tight connection with various specifications of external connector devices (such as syringes, infusion tubes, etc.), ensuring the universality and reliability of the connection. When liquid injection is required, by applying an axial thrust to the valve stem 4, the rubber stopper 5 is compressed, the opening and closing platform 6 is disengaged from the inner end face of the female Luer connector 3, the valve port opens, and the liquid enters the opening and closing valve from the external connector device through the female Luer connector 3; when injection is stopped, the thrust on the valve stem 4 is released, the valve stem 4 rebounds under the elastic restoring force of the rubber stopper 5, the opening and closing platform 6 is pressed tightly against the inner end face of the female Luer connector 3, the valve port closes, and liquid injection stops, thereby achieving convenient control of the on / off of liquid injection.

[0035] In this embodiment, the rubber stopper 5 is further made of medical-grade elastic rubber, which combines sealing and elastic rebound functions. Medical-grade elastic rubber has good biocompatibility and safety, will not contaminate the liquid medication, and will not chemically react with the liquid medication, meeting the medical safety standards for medical devices. At the same time, this material has excellent elasticity and sealing properties. When used as the rubber stopper 5, it can generate sufficient elastic recovery force after compression to allow the valve stem 4 to rebound, and it can also tightly fit the inner wall of the female Luer connector 3 and the outer wall of the valve stem 4, forming a reliable seal to prevent liquid leakage. This integration of sealing and elastic rebound functions ensures the normal operation and safe use of the valve.

[0036] In this embodiment, an installation process for the on / off valve is also provided: First, the valve body 1 is smoothly placed into a dedicated fixture. The fixture positions and fixes the valve body 1 to prevent displacement or shaking during subsequent installation, ensuring installation accuracy. Next, the valve stem 4 is placed inside the female Luer connector 3 according to a preset direction and position, allowing the valve stem 4 to move freely axially within the female Luer connector 3. A suitable gap must be maintained between the valve stem 4 and the inner wall of the female Luer connector 3 to meet the needs of liquid flow and valve stem 4 movement. Then, an appropriate amount of silicone oil is evenly applied to the surface of the rubber stopper 5. The purpose of applying silicone oil is to reduce friction between the rubber stopper 5 and the valve stem 4 and the female Luer connector 3, facilitating subsequent assembly operations. Silicone oil also enhances the sealing performance of the rubber stopper 5. The silicone oil-coated rubber stopper 5 is placed into the valve stem 4, aligning the rubber stopper 5 with the valve stem 4 at the designated embedding position. Gently apply pressure to firmly embed and fix the rubber stopper 5 and valve stem 4 together. After assembling the rubber stopper 5 and valve stem 4, align the female Luer connector 3 (which already contains the valve stem 4 and rubber stopper 5) with the external connector 2 on the valve body 1, and slowly insert it into the external connector 2 to ensure proper mating between the female Luer connector 3 and the external connector 2. Throughout the installation process, gently press to keep the rubber stopper 5 and valve stem 4 in a fixed, embedded position. This fixing method effectively prevents the rubber stopper 5 from shifting during subsequent welding processes, ensuring accurate relative positioning between the rubber stopper 5, valve stem 4, and female Luer connector 3. This reduces welding defects caused by rubber stopper 5 shifting and improves product yield. The on / off valve assembled using the above installation process effectively improves infusion efficiency, reduces drug loss during delivery, increases drug utilization, and well meets the needs of multi-channel tubing during infusion, providing convenient and reliable equipment support for medical infusion operations.

[0037] 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 disposable rubber-plug type multi-channel active opening and closing valve, characterized in that, The system includes a valve body (1) with a main channel (12) for liquid passage inside. The valve body (1) has at least one external connector (2) with a branch channel (10) inside, which communicates with the main channel (12). It also includes a female Luer connector (3) that is fitted into the external connector (2), with the inner wall of the external connector (2) and the outer wall of the female Luer connector (3) sealed together. A valve stem (4) is disposed inside the female Luer connector (3) and can move axially therein. An opening / closing platform (6) is disposed inside the female Luer connector (3) and located between the valve stem (4) and the external connector (2). A rubber plug (5) is embedded and fixedly connected to the valve stem (4). The liquid-passing platform (9) inside the external connector (2) is provided with at least one liquid-passing groove (11), which is connected to the sub-channel (10). When the valve rod (4) is pushed, the rubber plug (5) is compressed, causing the opening and closing platform (6) to disengage from the inner end face of the female Luer connector (3). Liquid enters from the female Luer connector (3), passes between the female Luer connector (3) and the valve rod (4) in sequence, between the rubber plug (5) and the female Luer connector (3), and then passes through the liquid-passing groove (11) into the sub-channel (10) and then into the main channel (12). After the valve rod (4) rebounds, the opening and closing platform (6) is pressed against the inner end face of the female Luer connector (3), and the valve port is closed to block the flow of liquid.

2. The disposable rubber plug type multi-channel active opening and closing valve according to claim 1, characterized in that, The inner wall of the outer connector (2) and the outer wall of the female Luer connector (3) are sealed and fixed by ultrasonic welding.

3. The disposable rubber plug type multi-channel active opening and closing valve according to claim 2, characterized in that, The female Luer connector (3) is provided with a boss (7) located inside the welding position (8) to prevent overflow during welding.

4. The disposable rubber plug type multi-channel active opening and closing valve according to claim 1, characterized in that, The liquid transfer tank (11) is arranged in a circular array along the center of the liquid transfer platform (9).

5. The disposable rubber plug type multi-channel active opening and closing valve according to claim 1, characterized in that, The rubber stopper (5) is an elastic rubber stopper.

6. The disposable rubber plug type multi-channel active opening and closing valve according to claim 1, characterized in that, The valve body (1) is provided with at least one external connector (2), and each external connector (2) is provided with a female Luer connector (3), valve stem (4), opening and closing platform (6), rubber plug (5), liquid passage platform (9) and liquid passage groove (11).

7. The disposable rubber plug type multi-channel active opening and closing valve according to claim 1, characterized in that, When the valve stem (4) rebounds, it does so through the elastic restoring force of the rubber plug (5).

8. The disposable rubber plug type multi-channel active opening and closing valve according to claim 1, characterized in that, The opening and closing platform (6) is an annular opening and closing platform, which is in annular sealing fit with the inner end face of the female Luer connector (3).

9. The disposable rubber plug type multi-channel active opening and closing valve according to claim 1, characterized in that, The female Luer connector (3) is used to connect with external connector devices. The liquid injection is controlled by pushing the valve stem (4). The liquid flow rate is controlled by the distance the valve stem (4) is pushed.

10. The disposable rubber plug type multi-channel active opening and closing valve according to claim 1, characterized in that, The rubber stopper (5) is made of medical elastic rubber material, which has both sealing and elastic rebound functions.

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