Multi-way valve structure suitable for micro-liquid medicine delivery and micro-liquid medicine delivery system thereof

Abstract

The utility model relates to a kind of multi-way valve structure suitable for trace liquid medicine delivery and its trace liquid medicine delivery system, including valve body and valve core. Valve body is provided with several circumferential interfaces, valve core is rotatably installed in valve body, valve core is provided with selection interface, by rotating valve core, the communication or cut-off of the central interface of valve body and circumferential interface is realized, control liquid medicine delivery passage. The inner diameter of all interfaces of multi-way valve is adapted to trace liquid medicine delivery pipeline, to avoid the problem of reducing diameter. The utility model also provides a kind of trace liquid medicine delivery system, including above-mentioned multi-way valve structure and related container and power execution device.

Description

Technical Field

[0001] This utility model relates to a multi-way valve structure, specifically to a multi-way valve structure suitable for micro-volume drug delivery and its micro-volume drug delivery system. Background Technology

[0002] In the field of liquid drug delivery, especially in the delivery of micro-volume liquid drugs, traditional pipeline switching typically employs a combination of multiple three-way valves. However, this combination method presents several problems: First, the combination of multiple three-way valves increases the number of interfaces, thereby increasing the risk of pipeline leakage; second, the complex pipeline layout makes the control logic more cumbersome, increasing system complexity and failure rate; furthermore, the combination of multiple three-way valves occupies a large space, reducing the space utilization rate of the equipment; finally, the existing three-way valves have a large inner diameter, which leads to diameter change issues when connecting with micro-volume liquid drug delivery pipelines, easily causing turbulence and affecting the delivery accuracy of the liquid drug.

[0003] Therefore, existing drug delivery systems have significant shortcomings in terms of accuracy, reliability, and space utilization in delivering small amounts of drug, and urgently need improvement. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a multi-way valve structure and a micro-drug delivery system suitable for micro-volume drug delivery.

[0005] To achieve the above-mentioned objectives, this utility model adopts the following technical solution: A multi-way valve structure suitable for micro-volume drug delivery includes:

[0006] Valve body and valve core;

[0007] The valve body has several circumferential interfaces. The valve core is rotatably installed inside the valve body. The valve core has a selection interface. By rotating the valve core, the selection interface can be made to correspond with any one of the circumferential interfaces of the valve body, so as to realize the connection between the center interface of the valve body and the corresponding circumferential interface.

[0008] Furthermore, when the circumferential selection interface is misaligned with all circumferential interfaces of the valve body, all channels are cut off.

[0009] Furthermore, the inner diameter of each port of the multi-port valve is adapted to the diameter of the micro-drug delivery pipeline to avoid diameter change problems during connection.

[0010] Furthermore, the valve core is controlled to rotate via a handle or drive mechanism, which includes a stepper motor or a servo motor, to achieve precise angular positioning.

[0011] Furthermore, the flow path between the circumferential interface and the central interface of the valve body is a straight-through structure to reduce the dead volume inside the valve body.

[0012] Furthermore, the number of circumferential interfaces is ≥4, and they are evenly distributed on the circumferential plane of the valve body.

[0013] Furthermore, there are four circumferential interfaces, which are evenly distributed on the circumferential plane of the valve body, and the interval angle between adjacent circumferential interfaces is 90°.

[0014] Furthermore, the multi-way valve structure is made of corrosion-resistant medical-grade polymer or metal, making it suitable for the delivery of radioactive drugs or high-precision micro-volume drugs.

[0015] A micro-volume drug delivery system includes a multi-way valve structure as described above, and a drug container, an intermediate container, a medium container, a target container, and a power actuator connected to the multi-way valve structure. The power actuator is used to control the delivery direction of the drug.

[0016] Furthermore, according to the aforementioned micro-volume drug delivery system, the power actuator is a pump body, which controls the intake and delivery of the drug solution through forward and reverse rotation.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Simplified structure: The combination of multiple three-way valves in traditional technology results in many interfaces and complex pipelines. However, this utility model achieves multi-channel switching of one valve by rotating the valve core, which reduces the number of interfaces, reduces the risk of pipeline leakage, simplifies the control logic, makes the equipment structure more compact, and improves space utilization.

[0019] 2. Improved Delivery Accuracy: Existing three-way valves have a large inner diameter, which leads to diameter changes when connected to micro-volume drug delivery pipelines, easily causing turbulence and affecting the delivery accuracy. This utility model's multi-way valve interfaces are all adapted to the micro-volume drug delivery pipelines, avoiding the diameter change problem, achieving piston-type delivery, reducing drug residue, and significantly improving delivery accuracy.

[0020] 3. Wide applicability: The multi-port valve structure of this utility model is suitable for various equipment that requires high-precision micro-volume drug delivery, especially medical equipment such as nuclear drug dispensing and injection machines. It meets the core consumable needs of sample testing and subsequent products and has broad application prospects. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the multi-way valve structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the selective connection of pipelines according to this utility model;

[0023] Figure 3 This is a schematic diagram of the valve body structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the valve core structure of this utility model;

[0025] Figure 5 This is a schematic diagram illustrating the turbulence phenomenon present in existing technologies;

[0026] Figure 6 This is a schematic diagram of the piston-type liquid medicine delivery system of this utility model;

[0027] Figure 7 This is a schematic diagram of the micro-volume drug delivery system of this utility model.

[0028] In the diagram, 1. Valve body; 2. Valve core; 3. Power actuator; 4. Intermediate container; 5. Target container; 11. Central interface; 12. First interface; 13. Second interface; 14. Third interface; 15. Fourth interface; 16. Valve body; 17. Valve body cavity; 21. Valve core body; 22. Handle; 23. Selection interface; 24. Central docking interface. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0030] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., 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 utility model and simplifying the description, and 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. Therefore, the above terms should not be construed as limitations on this utility model.

[0031] Example 1

[0032] like Figure 1-2As shown, this multi-way valve structure suitable for micro-volume drug delivery includes a valve body 1 and a valve core 2. The valve core 2 is rotatably installed inside the valve body 1. The valve body 1 has several circumferential interfaces (the number of interfaces is unlimited). When the valve core 2 is rotated until the selection interface 23 of the valve core 2 corresponds to a certain interface distributed on the circumference of the valve body, the central interface 11 can be selectively connected to any branch interface on the circumferential plane, realizing the drug delivery under this passage. The direction of drug delivery is determined according to the requirements. When the circumferential selection interface 23 of the valve core is misaligned with all the circumferential interfaces of the valve body 1, all channels can be cut off.

[0033] In this embodiment, as Figure 3 As shown, the valve body 1 consists of a valve body 16, a valve center interface 11 located below the body, and circumferential interfaces distributed on the valve body 16, including a first interface 12, a second interface 13, a third interface 14, and a fourth interface 15, with an angle of 90° between adjacent circumferential interfaces. The number and spacing of the circumferential interfaces are determined by actual requirements, with a maximum of 1 circumferential interface. The valve body 16 contains a valve body cavity 17.

[0034] In this embodiment, as Figure 4 As shown, the valve core 2 consists of a valve core body 21, a handle 22, a circumferential selection interface 23, and a center docking interface 24. Preferably, a drive mechanism can also be used to control the rotation of the handle 22 or the valve core body 21. The drive mechanism includes a stepper motor or a servo motor to achieve precise angle positioning.

[0035] like Figure 5 As shown, because the inner diameter of pipes used for micro-volume drug delivery is generally small, when connecting to a common three-way valve, the connection sequence is to connect the pipe to the connector, and then tighten the connector onto the three-way valve. This causes a diameter change problem during drug delivery. Turbulence occurs where the pipe diameter increases, resulting in more drug residue after being propelled by the delivery medium, which affects the delivery accuracy. The delivery medium is usually saline solution. Figure 6 As shown, after adopting the multi-way valve structure of this utility model, the connector pipeline of this multi-way valve can be fully adapted to thin pipes without any diameter change problem. The liquid medicine is conveyed by piston under the pushing medium, which reduces the liquid medicine residue and improves the conveying accuracy.

[0036] Example 2

[0037] Based on the same concept, such as Figure 7 As shown, this embodiment provides a micro-volume drug delivery system, including a multi-way valve structure as in Embodiment 1, and a drug container, an intermediate container 4, a medium container, a target container 5, and a power actuator 3 connected to the multi-way valve structure. The power actuator 3 is used for the delivery direction of the drug. The drug container and the medium container are not shown in the figure. The drug container is connected to the first interface 12, and the medium container is connected to the second interface 13.

[0038] In this embodiment, for example, the first interface 12 is the inlet end of the liquid medicine, the second interface 13 is the inlet end of the push medium, the fourth interface 15 is the outlet end of the liquid medicine, 3 is the power actuator (such as a pump body), 4 is the intermediate container, and 5 is the target container.

[0039] The specific process is as follows:

[0040] ① Rotate the valve core 2 to rotate the circumferential selection interface 23 to the first interface 12. At this time, the first interface 12 is connected to the center interface 11 and the other interfaces are cut off. Under the power of the power actuator 3, a small amount of medicine enters the valve core 2.

[0041] ② Rotate the valve core 2 and rotate the circumferential selection interface 23 to the second interface 13. At this time, the second interface 13 is connected to the center interface 11 and the other interfaces are cut off. Under the power of the power actuator 3, the push medium pushes the liquid medicine in the valve core 2 into the intermediate container 4.

[0042] ③ Rotate the valve core 2 to rotate the circumferential selection interface 23 to the fourth interface 15. At this time, the fourth interface 15 is connected to the center interface 11, and the other interfaces are cut off. The power actuator 3 reverses, and the liquid medicine in the intermediate container 4 enters the target container 5 through the pipeline.

[0043] The parts of this utility model not described in detail are existing technologies, therefore, this utility model does not describe them in detail.

[0044] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0045] Although this document uses a considerable amount of technical terminology, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0046] This utility model is not limited to the above-described preferred embodiment. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to this utility model falls within the protection scope of this utility model.

Claims

1. A multi-port valve structure suitable for the delivery of micro-volume pharmaceutical solutions, characterized in that, include: Valve body and valve core; The valve body is provided with several circumferential interfaces. The valve core is rotatably installed inside the valve body. The valve core is provided with a selection interface. By rotating the valve core, the selection interface is made to correspond with any one of the circumferential interfaces of the valve body, so as to realize the connection between the center interface of the valve body and the corresponding circumferential interface.

2. The multi-port valve structure for micro-volume drug delivery according to claim 1, characterized in that, When the selected interface is misaligned with all circumferential interfaces of the valve body, all channels are cut off.

3. The multi-port valve structure for micro-volume drug delivery according to claim 1, characterized in that, The inner diameter of all ports of the multi-way valve is compatible with the diameter of the micro-drug delivery pipeline.

4. The multi-port valve structure for micro-volume drug delivery according to claim 1, characterized in that, The valve core is controlled to rotate by a handle or a drive mechanism, which includes a stepper motor or a servo motor to achieve precise angle positioning.

5. The multi-port valve structure for micro-volume drug delivery according to claim 1, characterized in that, The flow path between the circumferential interface and the central interface of the valve body is a straight-through structure to reduce the dead volume inside the valve body.

6. The multi-port valve structure for micro-volume drug delivery according to any one of claims 1-5, characterized in that, The number of circumferential interfaces is ≥4, and they are evenly distributed on the circumferential plane of the valve body.

7. The multi-port valve structure for micro-volume drug delivery according to any one of claims 1-5, characterized in that, The number of circumferential interfaces is four, which are evenly distributed on the circumferential plane of the valve body, and the interval angle between adjacent circumferential interfaces is 90°.

8. The multi-port valve structure for micro-volume drug delivery according to any one of claims 1-5, characterized in that, The multi-way valve structure is made of corrosion-resistant medical-grade polymer or metal, and is suitable for the delivery of radioactive drugs or high-precision micro-volume drugs.

9. A micro-volume drug delivery system, characterized in that, It includes a multi-way valve structure as described in any one of claims 1-8, and a liquid medicine container, an intermediate container, a medium container, a target container, and a power actuator connected to the multi-way valve structure, wherein the power actuator is used to control the delivery direction of the liquid medicine.

10. A micro-volume drug delivery system according to claim 9, characterized in that, The power actuator is a pump body, which controls the intake and delivery of the liquid medicine by forward and reverse rotation.

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