Infusion anti-siphon valve

Abstract

The utility model discloses an infusion anti-siphon valve which comprises a first connector pipe, a control panel and a second connector pipe. The lower end of the first connector pipe is connected with the upper end of the second connector pipe, and a control panel is arranged between the first connector pipe and the second connector pipe. The first joint pipe is of a hollow structure, a flow limiting plate is arranged in the lower end of the first joint pipe, and at least one flow direction channel is formed in the flow limiting plate; the lower end face of the flow limiting plate is provided with a flow control boss extending downwards at the position of the non-flow-direction channel. When liquid supplies liquid flowing pressure to the control panel, pressure is applied to the end face provided with the flow control through hole, so that the flow control protrusion does not block the flow control through hole any more, and the liquid flows into the second connector pipe. However, when the liquid flows back, the pressure of the liquid only enables the flow control boss to be tightly pressed with the flow control through hole, so that the risk of back flow is effectively prevented. The design is low in cost, high in safety and wide in application range.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an anti-siphon valve for infusion. Background Art

[0002] There is no effective control valve in the current infusion pipeline to prevent the backflow of infusion. If the infused blood flows back, if the symptoms are serious, it may cause anemia or infection, which may pose a certain risk to the infusion. Utility Model Content

[0003] The utility model aims to provide an infusion anti-siphon valve which can be used in an infusion pipeline and effectively solves the hidden danger of infusion backflow.

[0004] The utility model solves the technical problem by adopting the following technical scheme: an infusion anti-siphon valve, comprising a first joint pipe, a control plate and a second joint pipe; the lower end of the first joint pipe is connected to the upper end of the second joint pipe, and a control plate is arranged between the first joint pipe and the second joint pipe; the first joint pipe is an internal hollow structure, and a flow limiting plate is arranged inside the lower end thereof, and at least one flow channel is opened on the flow limiting plate;

[0005] The lower end surface of the flow limiting plate is provided with a flow control boss extending downward at a position not flowing toward the channel;

[0006] A flow control hole is provided at a position corresponding to the flow control boss on the control plate;

[0007] The flow control boss can fall into the flow control hole and block the flow control hole;

[0008] The flow control hole is in hollow communication with the interior of the second joint pipe.

[0009] Preferably, the flow control boss is located in the middle of the flow limiting plate, and a plurality of circular arrays of flow channels are opened on the flow limiting plate at the periphery of the flow boss.

[0010] Preferably, a first connecting platform is provided on the periphery of the lower end of the first connecting pipe, and a first connecting ring plate is extended downward from the periphery of the first connecting platform; a second connecting platform is provided on the periphery of the upper end of the second connecting pipe, and a second connecting ring groove is recessed downward from the periphery of the second connecting platform, and the first connecting ring plate is clamped or threadedly connected in the second connecting ring groove.

[0011] Preferably, a collecting groove is provided in the middle of the second connecting platform, and the middle of the collecting groove is connected with the pipeline of the second joint pipe; the groove wall extending upward from the outer periphery of the collecting groove is formed with a step wall;

[0012] A control support ring extends downward from the circumferential lower end of the control plate, and the control support ring is clamped on the step wall of the collecting tank.

[0013] Preferably, a funnel-shaped control flow groove is recessed on the upper end surface of the control plate, and a funnel-shaped control flow hole is opened in the middle of the control flow groove; a convex loop is arranged on the upper end surface of the control plate outside the control flow groove.

[0014] Preferably, the upper end surface of the circumference of the control plate is on the same level as the upper end surface of the circumference of the groove wall of the collecting groove;

[0015] A connecting support ring extends downward from the lower end surface of the first connecting platform and abuts against the upper end surface of the circumference of the control plate and the upper end surface of the groove wall of the collecting groove.

[0016] The utility model has the following beneficial effects: a flow control hole is provided at a position corresponding to the flow control boss of the control panel; the flow control boss can fall into the flow control hole and block the flow control hole; in the initial state, the liquid flows from the first joint pipe into the flow channel and flows into the flow control hole through the flow channel. When the liquid applies flow pressure to the control panel, it applies pressure to the end face provided with the flow control hole, so that the flow control boss no longer blocks the flow control hole, and the liquid flows into the second joint pipe; but when the liquid flows back, the pressure of the liquid will only press the flow control boss more tightly with the flow control hole, so as to effectively prevent the risk of backflow. This design has low cost, high safety and wide application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the infusion anti-siphon valve;

[0018] Figure 2 It is a cross-sectional view of an infusion anti-siphon valve;

[0019] Figure 3 A structural cross-sectional view of the control panel connected to the second joint pipe;

[0020] Figure 4 Schematic diagram of the first joint pipe structure

[0021] The markings in the figure are as follows: 1-first connecting pipe; 2-control plate; 3-second connecting pipe; 4-flow limiting plate; 5-flow channel; 6-flow control boss; 7-flow control hole; 8-first connecting platform; 9-first connecting ring plate; 10-second connecting platform; 11-second connecting ring groove; 12-collecting groove; 13-step wall; 14-control support ring; 15-control flow groove; 16-connection support ring. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the embodiments and drawings.

[0023] Example 1

[0024] The present embodiment provides an infusion anti-siphon valve, comprising a first joint pipe 1, a control panel 2 and a second joint pipe 3; the lower end of the first joint pipe 1 is connected to the upper end of the second joint pipe 3, and a control panel 2 is provided between the first joint pipe 1 and the second joint pipe 3; the first joint pipe 1 is a hollow pipe structure, and a flow limiting plate 4 is provided inside the lower end thereof, and at least one flow channel 5 is opened on the flow limiting plate 4;

[0025] The lower end surface of the flow limiting plate 4 is provided with a flow control boss 6 extending downward at a position not flowing toward the channel;

[0026] The control plate 2 is provided with a flow control hole 7 at a position corresponding to the flow control boss 6;

[0027] The flow control boss 6 falls into the flow control hole 7 in a natural state, and blocks the flow control hole 7;

[0028] The flow control hole 7 is communicated with the hollow pipe inside the second joint pipe 3 .

[0029] When the infusion anti-siphon valve of this scheme is used on the infusion pipeline, the liquid flows downward from the first connector tube 1 and flows into the control panel 2 through the flow channel. Here, the control panel 2 can be provided with a receiving platform at a relative position, and a flow control hole 7 is provided on the receiving platform. In the initial state, the flow control boss is blocked at the flow control hole, and the upper end surface of the control panel is depressed downward by the pressure of the liquid, thereby driving the flow control hole to be depressed downward, so that the flow control boss no longer blocks the flow control hole, so that the liquid flows into the second connector pipeline; however, when the liquid flows back, the pressure of the liquid will only press the flow control boss more tightly with the flow control hole, so as to effectively prevent the risk of backflow. This design has low cost, high safety and wide application. It effectively solves the hidden danger of infusion backflow.

[0030] In a preferred further implementation of this embodiment, the flow control boss 6 is located in the middle of the flow limiting plate 4, and a plurality of flow channels 5 are arranged in a circumferential array on the flow limiting plate outside the flow control boss 6. A plurality of flow channels 5 are provided, and the liquid flows to the control plate 2 from the plurality of flow channels at the same time, so that the flow rate is large, and the control through hole force is given from the circumference at the same time, and the process force is more sufficient.

[0031] In a preferred further implementation of this embodiment, a first connection platform 8 is provided at the periphery of the lower end of the first joint pipe 1, and a first connection ring plate 9 is provided on the periphery of the first connection platform 8 extending downward; a second connection platform 10 is provided at the periphery of the upper end of the second joint pipe 3, and a second connection ring groove 11 is provided on the periphery of the second connection platform 10, and the first connection ring plate 9 is clamped or threadedly connected in the second connection ring groove 11. This arrangement allows the first joint pipe and the second joint pipe to be effectively replaced.

[0032] In a further preferred implementation of this embodiment, a collecting groove 12 is provided in the middle of the second connecting platform 10, and the middle of the collecting groove 12 is connected with the pipeline of the second connecting pipe 3; the groove wall extending upward from the outer circumference of the collecting groove 12 is formed with a step wall 13; the lower end of the circumference of the control plate 2 is extended downward with a control support ring 14, and the control support ring 14 is clamped on the step wall 13 of the collecting groove. Such a collecting groove can collect liquid more effectively, and the liquid gives pressure. The setting of the support ring allows the second connecting pipe and the control plate to directly form a "cavity", and the liquid flows into this cavity from the upper end face of the control plate pressed by the first connecting pipe, so that the liquid has a buffer cavity when it flows downward. If liquid backflow occurs, it also effectively provides a buffer zone for the liquid.

[0033] In a preferred further implementation of this embodiment, the upper end surface of the control plate 2 is provided with a funnel-shaped control flow groove 15, and the middle of the control flow groove 15 is provided with a funnel-shaped control flow hole 7; and a convex loop is provided on the upper end surface of the non-control flow groove of the control plate. This design is to better coordinate the smooth flow direction of the liquid and the resistance to reverse flow.

[0034] In a further preferred implementation of this embodiment, the upper end surface of the circumference of the control panel 2 is on the same horizontal plane as the upper end surface of the outer wall of the collecting tank 12; a connecting support ring 16 extends downward from the lower end surface of the first connecting platform 8, abutting against the upper end surface of the circumference of the control panel 2 and the upper end surface of the outer wall of the collecting tank 12. The provision of the connecting support ring 16 greatly facilitates the replacement of the first joint pipe and the second joint pipe, and facilitates the operation without damaging the first joint pipe or the second joint pipe.

[0035] The order of the above embodiments is only for the convenience of description and does not represent the advantages or disadvantages of the embodiments.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An infusion anti-siphon valve, characterized in that: The invention comprises a first joint pipe, a control plate and a second joint pipe; the lower end of the first joint pipe is connected to the upper end of the second joint pipe, and a control plate is arranged between the first joint pipe and the second joint pipe; the first joint pipe is a hollow pipe structure, and a flow limiting plate is arranged inside the lower end thereof, and at least one flow channel is opened on the flow limiting plate; The lower end surface of the flow limiting plate is provided with a flow control boss extending downward at a position not flowing toward the channel; A flow control hole is provided at a position of the control plate corresponding to the flow control boss; The flow control boss can fall into the flow control hole and block the flow control hole; The flow control hole is communicated with the hollow pipe inside the second joint pipe.

2. The anti-siphon valve for infusion according to claim 1, characterized in that: The flow control boss is located in the middle of the flow limiting plate, and a plurality of flow direction channels are arranged in a circular array on the flow limiting plate at the periphery of the flow boss.

3. The anti-siphon valve for infusion according to claim 1, characterized in that: A first connecting platform is arranged on the periphery of the lower end of the first connecting pipe, and a first connecting ring plate is extended downwardly from the periphery of the first connecting platform; a second connecting platform is arranged on the periphery of the upper end of the second connecting pipe, and a second connecting ring groove is recessed downwardly from the periphery of the second connecting platform, and the first connecting ring plate is clamped or threadedly connected in the second connecting ring groove.

4. The anti-siphon valve for infusion according to claim 3, characterized in that: A collecting groove is provided in the middle of the second connecting platform, and the middle of the collecting groove is connected with the pipeline of the second joint pipe; the groove wall extending upward from the outer periphery of the collecting groove is formed with a step wall; A control support ring extends downward from the circumferential lower end of the control plate, and the control support ring is clamped on the step wall of the collecting groove.

5. The anti-siphon valve for infusion according to claim 4, characterized in that: The upper end surface of the control plate is concavely provided with a funnel-shaped control flow groove, and a funnel-shaped control flow hole is opened in the middle of the control flow groove; a convex loop is arranged on the upper end surface of the non-control flow groove of the control plate.

6. The method according to claim 5, characterized in that: The upper end surface of the circumference of the control plate is on the same level as the upper end surface of the trough wall of the collecting trough; A connecting support ring extends downward from the lower end surface of the first connecting platform and abuts against the upper end surface of the circumference of the control plate and the upper end surface of the groove wall of the collecting groove.

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