Anti-reflux universal valve

Abstract

The utility model discloses an anti-reverse-flow type universal valve which comprises a valve body, a piston and a one-way valve, an upper cover is arranged at the top of the valve body, a first Luer interface, a second Luer interface and a third Luer interface are arranged on the side wall of the valve body, the second Luer interface is connected with the one-way valve, the top of the piston extends out of the upper cover, and the third Luer interface is connected with the one-way valve. According to the utility model, the plugging groove in the base is communicated with the cavity of the valve body, the one-way valve is arranged, so that liquid can be prevented from flowing back, the upper valve core and the lower valve core are matched with the valve body, the sealing performance is good, and the piston can move up and down along the valve body through the arrangement of the piston bottom plate. The blocking groove can be blocked from the cavity of the valve body, the piston is pressed down, the third Luer interface in the blocking groove is communicated with the cavity of the valve body, a channel is formed, liquid can be infused or extracted, and operation is simpler, more convenient and safer.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a backflow prevention type universal valve. Background Art

[0002] In the various treatment plans for different patients in the hospital, it is generally necessary to establish a connecting pathway. At this time, tees or connectors are often used for connection. The pipelines can be arranged reasonably, and the direction of infusion can be changed to achieve the treatment effect of multi-channel infusion or pressure detection.

[0003] The present application designs an anti-backflow type Wantongda, which adopts automatic check valve technology. By lightly pressing the white button, liquid can be infused or withdrawn. The button adopts a simple streamlined design and abandons the traditional three-way steering handle, making the operation easier and safer. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above-mentioned and / or existing problems in the use of the anti-backflow type universal valve, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an anti-backflow type universal valve, which is connected with the chamber of the valve body through the sealing groove in the base. The setting of the one-way valve can prevent liquid from flowing back. The upper valve core and the lower valve core cooperate with the valve body to achieve good sealing. The sealing groove and the chamber of the valve body can be blocked by the setting of the piston bottom plate. When the piston is pressed, the third Luer interface in the sealing groove is connected with the chamber of the valve body to form a passage, so that liquid can be infused or extracted, and the operation is simpler and safer.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A backflow prevention universal valve, comprising:

[0009] A valve body, wherein an upper cover is arranged on the top of the valve body, a first Luer interface, a second Luer interface and a third Luer interface are arranged on the side wall of the valve body, and the second Luer interface is connected to a one-way valve;

[0010] The piston has a top extending out of the upper cover, and a piston bottom plate which moves up and down along the valve body is arranged at the bottom of the piston.

[0011] As a preferred solution of the anti-backflow type universal valve described in the utility model, the first Luer interface is connected to a lock nut, and the inlet of the lock nut is covered with a first protective cap.

[0012] As a preferred solution of the anti-backflow type universal valve described in the utility model, a base is provided at the bottom of the valve body, a sealing groove connected to the valve body chamber is provided inside the base, and the third Luer interface is connected to the sealing groove.

[0013] As a preferred solution of the anti-backflow type universal valve described in the utility model, the side wall of the piston is provided with an upper groove and a lower groove, and the upper valve core and the lower valve core are respectively provided inside the upper groove and the lower groove.

[0014] As a preferred solution of the anti-backflow type universal valve described in the utility model, the outer periphery of the outlet of the one-way valve is covered with a second protective cap, and the outer periphery of the third Luer interface is covered with a third protective cap.

[0015] Compared with the prior art, the utility model has the following beneficial effects: this anti-backflow type universal valve is connected with the chamber of the valve body through the blocking groove in the base, and the setting of the one-way valve can prevent liquid from flowing back. The upper valve core and the lower valve core cooperate with the valve body to achieve good sealing performance. The blocking groove and the chamber of the valve body can be blocked by the setting of the piston bottom plate. When the piston is pressed, the third Luer interface in the blocking groove is connected with the chamber of the valve body to form a passage, so that liquid can be infused or extracted, and the operation is simpler and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of an anti-backflow type universal valve of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of a backflow prevention type universal valve of the utility model;

[0019] Figure 3 The utility model is a schematic diagram of the structure of the piston part of an anti-backflow type universal valve.

[0020] 100, valve body; 101, first Luer interface; 102, second Luer interface; 103, third Luer interface; 110, base; 120, upper cover; 130, lock nut; 131, first protective cap; 140, third protective cap; 200, piston; 210, upper valve core; 220, lower valve core; 230, piston bottom plate; 300, one-way valve; 310, second protective cap. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged at a general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The utility model provides an anti-backflow type universal valve, which is connected with the cavity of the valve body through a blocking groove in a base, and the one-way valve is arranged to prevent liquid from flowing back. The upper valve core and the lower valve core cooperate with the valve body to have good sealing performance. The blocking groove and the cavity of the valve body can be blocked by the arrangement of a piston bottom plate. When the piston is pressed, the third Luer interface in the blocking groove is connected with the cavity of the valve body to form a passage, so that liquid can be infused or extracted, and the operation is simpler and safer.

[0025] Figure 1-Figure 3 The structure diagram of an anti-backflow universal valve of the utility model is shown in FIG. Figure 1-Figure 3 In this embodiment, a backflow prevention type universal valve is provided, and its main body includes a valve body 100, a piston 200 and a one-way valve 300.

[0026] The valve body 100 is connected to the chamber of the valve body 100 through the blocking groove in the base 110. The setting of the one-way valve 300 can prevent liquid backflow. Specifically, the top of the valve body 100 is provided with an upper cover 120, and the side wall of the valve body 100 is provided with a first Luer interface 101, a second Luer interface 102 and a third Luer interface 103. The second Luer interface 102 is connected to the one-way valve 300. In this embodiment, the first Luer interface 101 is connected to a lock nut 130, and the inlet of the lock nut 130 is sleeved with a first protective cap 131. The bottom of the valve body 100 is provided with a base 110, and the inside of the base 110 is provided with a blocking groove communicating with the chamber of the valve body 100. The third Luer interface 103 is communicated with the blocking groove, and the outer periphery of the outlet of the one-way valve 300 is sleeved with a second protective cap 310, and the outer periphery of the third Luer interface 103 is sleeved with a third protective cap 140;

[0027] The piston 200 cooperates with the valve body 100 through the upper valve core 210 and the lower valve core 220, and has good sealing performance. Through the setting of the piston bottom plate 230, the sealing groove and the chamber of the valve body 100 can be blocked. When the piston 200 is pressed down, the third Luer interface 103 in the sealing groove is connected with the chamber of the valve body 100 to form a passage, so that liquid can be infused or extracted, and the operation is simpler and safer. Specifically, the top of the piston 200 extends out of the upper cover 120, and the bottom of the piston 200 is provided with a piston bottom plate 230 that moves up and down along the valve body 100. In this embodiment, the side wall of the piston 200 is provided with an upper groove and a lower groove, and the upper valve core 210 and the lower valve core 220 are respectively provided inside the upper groove and the lower groove.

[0028] Combination Figure 1-Figure 3 The anti-backflow type universal valve of this embodiment has the following specific usage process: the sealing groove in the base 110 is connected with the chamber of the valve body 100, and the setting of the one-way valve 300 can prevent the liquid from flowing back. The upper valve core 210 and the lower valve core 220 cooperate with the valve body 100, and the sealing performance is good. The sealing groove and the chamber of the valve body 100 can be blocked by the setting of the piston bottom plate 230. When the piston 200 is pressed, the third Luer interface 103 in the sealing groove is connected with the chamber of the valve body 100 to form a passage, so that liquid can be infused or extracted, and the operation is simpler and safer.

[0029] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A backflow prevention universal valve, characterized in that: include: A valve body (100), wherein an upper cover (120) is arranged on the top of the valve body (100), and a first Luer interface (101), a second Luer interface (102) and a third Luer interface (103) are arranged on the side wall of the valve body (100), and the second Luer interface (102) is connected to a one-way valve (300); A piston (200), wherein the top of the piston (200) extends out of the upper cover (120), and the bottom of the piston (200) is provided with a piston bottom plate (230) that moves up and down along the valve body (100).

2. The anti-backflow type universal valve according to claim 1, characterized in that: The first Luer interface (101) is connected to a lock nut (130), and the inlet of the lock nut (130) is covered with a first protective cap (131).

3. The anti-backflow type universal valve according to claim 2, characterized in that: The bottom of the valve body (100) is provided with a base (110), the interior of the base (110) is provided with a blocking groove which is in communication with the chamber of the valve body (100), and the third Luer interface (103) is in communication with the blocking groove.

4. The anti-backflow type universal valve according to claim 3, characterized in that: An upper groove and a lower groove are provided on the side wall of the piston (200), and an upper valve core (210) and a lower valve core (220) are provided inside the upper groove and the lower groove, respectively.

5. The anti-backflow type universal valve according to claim 4, characterized in that: The outer periphery of the outlet of the one-way valve (300) is covered with a second protective cap (310), and the outer periphery of the third Luer interface (103) is covered with a third protective cap (140).

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