Medical on-off valve

Abstract

The utility model discloses a medical opening and closing valve, which belongs to the field of medical tools, and comprises a nut and a female Luer taper, the nut is connected with the female Luer taper in a clamping manner, an opening plug is slidably connected in the female Luer taper, one end of the nut far away from the female Luer taper is fixedly connected with a pipeline, and the pipeline is connected with the nut. A triangular block is fixedly connected to the end, located in the nut, of the pipeline, a valve plate is arranged in the female Luer connector, and the valve plate is located on the front side of the triangular block; the end of the external male Luer taper abuts against the opening plug in the female Luer taper, the end of the opening plug moves to abut against the valve block, the middle position of the valve block abuts against the triangular block in the nut to be stressed and deformed, and the valve block is deformed into a V shape from a sheet shape, so that a channel is formed between the interior of the female Luer taper and a pipeline in the nut to be in a two-way opening state; at the moment, medicine can be conveniently added into the infusion pipeline, or liquid can be conveniently input into and output from the infusion pipeline, so that the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical tools, in particular to a medical opening and closing valve. Background Art

[0002] Medical on-off valves are suitable for various infusion scenarios. They are usually in a closed state to protect the liquid in the infusion line from external contamination. Then, when combined with connectors with standard parts, they can be in an open state to realize the drug adding function.

[0003] However, the existing on-off valve can only perform one-way input but not output after being opened, which reduces the convenience and function of use. Utility Model Content

[0004] In order to overcome the above technical problems, the purpose of the utility model is to provide a medical on-off valve to solve the problem in the prior art that the existing on-off valve can only perform one-way input but not output after opening, which reduces the convenience and functionality of use.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A medical opening and closing valve comprises a nut and a female Luer connector, wherein the nut is connected to the female Luer connector by snap-fitting, an opening plug is slidably connected inside the female Luer connector, one end of the nut away from the female Luer connector is fixedly connected to a pipeline, one end of the pipeline located inside the nut is fixedly connected to a triangular block, a valve plate is arranged inside the female Luer connector, and the valve plate is located on the front side of the triangular block.

[0007] As a further solution of the utility model: a circumferential array of protrusions is fixedly connected to the inner wall of the nut.

[0008] As a further solution of the utility model: a stop rod is fixedly connected in the middle of the female Luer connector, and the stop rod cooperates with the open plug to limit the position.

[0009] As a further solution of the utility model: a circumferential array of limit blocks is fixedly connected to the inner wall of the female Luer connector, and the valve plate is located inside the circumferential array of limit blocks.

[0010] As a further solution of the utility model: an inner thread sleeve is fixedly connected to a side of the nut away from the female Luer connector, the inner thread sleeve is sleeved on the outside of the pipeline, and a protective cap is clamped on the outer wall of the inner thread sleeve.

[0011] As a further solution of the utility model: a threaded block is fixedly connected to the outer wall of one end of the female Luer connector away from the nut, a locking cover is threadedly connected to the threaded block, and the locking cover is sleeved on the outside of the female Luer connector.

[0012] Beneficial effects of the utility model:

[0013] In the utility model, the end of the male Luer connector is abutted against the opening plug inside the female Luer connector to push the opening plug to move, and the end of the opening plug moves to abut against the valve plate, and the middle position of the valve plate is abutted against the triangular block inside the nut and deformed from a sheet shape to a V shape, so that a passage is formed between the pipeline inside the female Luer connector and the pipeline inside the nut in a two-way open state. At this time, it is convenient to add medicine to the infusion pipeline, or input and output liquids into and out of the infusion pipeline. During input, the liquid path in the infusion pipeline can be pressurized to accelerate the flow of the liquid path, and during output, negative pressure can be formed in the infusion pipeline to reduce the infusion speed and improve the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is an explosion schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the explosion cross-section structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the nut structure in the utility model;

[0020] Figure 6 It is a structural schematic diagram of a female Luer connector in the utility model.

[0021] In the figure: 1. nut; 101. pipe; 102. triangular block; 103. protrusion; 104. inner thread sleeve; 2. female Luer connector; 201. stop rod; 202. limit block; 203. threaded block; 3. opening plug; 4. valve plate; 5. protective cap; 6. locking cover. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-Figure 6As shown, a medical opening and closing valve comprises a nut 1 and a female Luer connector 2, wherein the nut 1 is connected to the female Luer connector 2 by snap-fitting, an opening plug 3 is slidably connected inside the female Luer connector 2, one end of the nut 1 away from the female Luer connector 2 is fixedly connected to a pipe 101, one end of the pipe 101 located inside the nut 1 is fixedly connected to a triangular block 102, a valve sheet 4 is arranged inside the female Luer connector 2, the valve sheet 4 is located in front of the triangular block 102, and the material of the valve sheet 4 is medical silicone, and at the same time, the female Luer connector 2 mentioned above is a 6:100 standard part, and the male Luer connector used therewith is also a 6:100 standard part.

[0024] like Figure 1 and, Figure 2 and Figure 5 As shown, the inner wall of the nut 1 is fixedly connected with a circular array of protrusions 103. Through the arrangement of the protrusions 103, when the valve plate 4 is deformed, the outer edge of the valve plate 4 abuts against the protrusions 103 instead of the inner wall of the nut 1, so that the medicine liquid can flow through the gaps between the multiple groups of protrusions 103, thereby improving the efficiency of the medicine liquid input and output.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, a stop rod 201 is fixedly connected in the middle of the female Luer connector 2, and the stop rod 201 cooperates with the opening plug 3 to limit the position. The opening plug 3 is tubular and has a groove running through both sides at one end. The groove position of the opening plug 3 is inserted into the outer wall of the stop rod 201 for limiting, so as to prevent the opening plug 3 from excessively squeezing the valve plate 4 and causing excessive deformation, thereby improving the stability of the connection between the female Luer connector 2 and the nut 1.

[0026] like Figure 2 and Figure 6 As shown, the inner wall of the female Luer connector 2 is fixedly connected with a circumferential array of limit blocks 202, and the valve plate 4 is located inside the circumferential array of limit blocks 202. The position of the valve plate 4 is limited by the circumferential array of limit blocks 202 to prevent the valve plate 4 from being displaced inside the female Luer connector 2. Therefore, when the opening plug 3 pushes the valve plate 4 to abut against the triangular block 102, the center position of the valve plate 4 can be guaranteed to abut against the triangular block 102, thereby improving the stability of the valve plate 4 being deformed into a V-shape under force.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, the side of the nut 1 away from the female Luer connector 2 is fixedly connected with an inner thread sleeve 104, the inner thread sleeve 104 is sleeved on the outside of the pipe 101, and a protective cap 5 is clamped on the outer wall of the inner thread sleeve 104. The protective cap 5 protects the pipe 101 on the side wall of the nut 1 to prevent the pipe 101 from being contaminated by the outside when not in use.

[0028] like Figure 1 , Figure 2 and Figure 6 As shown, the outer wall of one end of the female Luer connector 2 away from the nut 1 is fixedly connected with a threaded block 203, and a locking cover 6 is threadedly connected to the threaded block 203. The locking cover 6 is sleeved on the outer side of the female Luer connector 2. The outer end of the female Luer connector 2 is protected by the locking cover 6 to prevent the female Luer connector 2 from being contaminated by the outside when not in use.

[0029] The working principle of the utility model is as follows: when the user uses it, the pipe 101 of the nut 1 is connected to the infusion pipeline. When it needs to be opened for use, the male Luer connector is inserted into the inner wall of the female Luer connector 2, and then the end of the male Luer connector is against the opening plug 3 inside the female Luer connector 2, pushing the opening plug 3 to move, and the end of the opening plug 3 moves to against the valve plate 4. The middle position of the valve plate 4 is against the triangular block 102 inside the nut 1 and deforms from a sheet shape to a V shape, so that a passage is formed between the inside of the female Luer connector 2 and the pipe 101 inside the nut 1 in a two-way open state. At this time, the male Luer connector can be used to add medicine to the inside of the infusion pipeline through the female Luer connector 2 and the pipe 101, or liquid can be input and output from the inside of the infusion pipeline. During input, the liquid path in the infusion pipeline can be pressurized to accelerate the flow of the liquid path, and during output, negative pressure can be formed in the infusion pipeline to reduce the infusion speed and improve the convenience of use.

[0030] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A medical on-off valve, comprising a nut (1) and a female Luer connector (2), characterized in that: The nut (1) is connected to the female Luer connector (2) by snap-fitting, an opening plug (3) is slidably connected inside the female Luer connector (2), one end of the nut (1) away from the female Luer connector (2) is fixedly connected to a pipe (101), one end of the pipe (101) located inside the nut (1) is fixedly connected to a triangular block (102), a valve plate (4) is arranged inside the female Luer connector (2), and the valve plate (4) is located on the front side of the triangular block (102).

2. A medical on-off valve according to claim 1, characterized in that: The inner wall of the nut (1) is fixedly connected with a circumferential array of protrusions (103).

3. A medical on-off valve according to claim 1, characterized in that: A stop rod (201) is fixedly connected in the middle of the female Luer connector (2), and the stop rod (201) cooperates with the opening plug (3) to limit the position.

4. A medical on-off valve according to claim 1, characterized in that: The inner wall of the female Luer connector (2) is fixedly connected to a circumferential array of limit blocks (202), and the valve plate (4) is located inside the circumferential array of limit blocks (202).

5. A medical on-off valve according to claim 1, characterized in that: An inner thread sleeve (104) is fixedly connected to a side of the nut (1) away from the female Luer connector (2); the inner thread sleeve (104) is sleeved on the outside of the pipe (101); and a protective cap (5) is clamped on the outer wall of the inner thread sleeve (104).

6. A medical on-off valve according to claim 1, characterized in that: A threaded block (203) is fixedly connected to the outer wall of one end of the female Luer connector (2) away from the nut (1), and a locking cover (6) is threadedly connected to the threaded block (203), and the locking cover (6) is sleeved on the outer side of the female Luer connector (2).

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