Air exhaust one-way valve device of air exhaust type negative pressure drainage apparatus

Abstract

The utility model discloses an air exhaust one-way valve device of an air exhaust type negative pressure drainage apparatus, which is an assembly of the air exhaust type negative pressure drainage apparatus, the air exhaust type negative pressure drainage apparatus comprises a drainage bottle, and is characterized in that a one-way valve shell and a drainage bottle cap are integrally formed, the one-way valve shell is provided with an air exhaust hole which is positioned in an inner cavity of the drainage bottle body, and the drainage bottle cap is provided with an air outlet. A one-way sealing piece is arranged in the one-way valve shell; the sealing cover is used for isolating the injection molding opening of the one-way valve shell from the external space, and the isolation space of the sealing cover is directly or indirectly outwards connected with the negative pressure pump in a one-way mode. The utility model aims to provide a sustainable and convenient-to-use air exhaust one-way valve device which is simple and reasonable in structure, low in cost, high in air exhaust efficiency, free of abnormal liquid return of an air exhaust pipeline when placed at will, especially suitable for a negative pressure drainage instrument of a negative pressure source, and capable of overcoming the defects in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to an air extraction one-way valve device for an air extraction type negative pressure drainage device. Background Art

[0002] Negative pressure drainage devices are widely used in clinical practice to drain residual and exudative fluids from patients' wounds after surgery, which can promote the repair of patients' wound tissues. With the improvement of medical standards, there is an urgent clinical need for high negative pressure compensation type drainage devices. Due to the immaturity of existing technologies, the current structural designs are relatively complex, with high failure rates, low efficiency, many accessories, and difficult and inconvenient operations. In particular, the structure of the air extraction one-way valve device in negative pressure drainage devices is complex, has high usage condition requirements, a large initial air extraction waste cavity volume, low air extraction efficiency, abnormal liquid return in the air extraction pipeline in non-vertical positions, and high manufacturing costs, thus unable to be widely promoted. Summary of the Invention

[0003] The purpose of the utility model is to provide an air extraction one-way valve device that is simple and reasonable in structure, low in cost, high in air extraction efficiency, has no abnormal liquid return in the air extraction pipeline when placed arbitrarily, is particularly suitable for negative pressure source negative pressure drainage instruments, and can overcome the defects of existing technologies, and is sustainable and convenient to use.

[0004] To solve these problems in the existing technology, the technical solution provided by the utility model is: an air extraction one-way valve device for an air extraction type negative pressure drainage device, which is a component of the air extraction type negative pressure drainage device. The air extraction type negative pressure drainage device includes a drainage bottle. The one-way valve housing is integrally formed with the drainage bottle cap. The one-way valve housing is provided with an air extraction hole in the inner cavity of the drainage bottle, and a one-way seal is arranged inside the one-way valve housing. A sealing cover is provided to isolate the injection opening of the one-way valve housing from the external space. The isolated space of the sealing cover is directly or indirectly connected to the negative pressure pump unidirectionally.

[0005] Here, "connected to the negative pressure pump unidirectionally outward" means that the gas or liquid in the connected passage flows unidirectionally from the one-way valve to the negative pressure pump.

[0006] In a preferred implementation state, the air extraction type negative pressure drainage device is provided with a negative pressure pump, and the air extraction cylinder with an opening downward of the negative pressure pump is integrally manufactured with the one-way valve housing.

[0007] In a preferred implementation state, a spring is arranged above the one-way seal.

[0008] In a preferred implementation state, the one-way seal is a rubber pad or block with a head larger than the tail.

[0009] In a preferred implementation state, the drainage bottle is provided with a negative pressure regulating device.

[0010] In a preferred implementation state, the sealing cover is provided with a connector.

[0011] In a preferred implementation state, an air inlet hole is provided on the top wall of the air extraction cylinder, and the outer opening of the air inlet hole is located in the sealed space of the sealing cover.

[0012] Compared with the solutions in the prior art, the advantages of the present utility model are as follows:

[0013] The structure is simple and reasonable, the cost is low, the air extraction efficiency is high, the drainage container can be placed arbitrarily without abnormal liquid return in the air extraction pipeline, and it is particularly suitable for being configured in a disposable negative pressure drainage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 It is a partially enlarged view of Embodiment A of the present utility model;

[0017] Figure 3 It is a front view of the drainage bottle cap of an embodiment of the present utility model;

[0018] Figure 4 It is a three-dimensional view of the drainage bottle cap of an embodiment of the present utility model.

[0019] The digital markings in the figures are represented as:

[0020] 1. Negative pressure display device; 2. Drainage bottle cap; 3. Drainage bottle body; 4. Spring; 5. One-way valve housing; 6. Air inlet hole; 7. Sealing cover; 8. One-way seal; 9. Air extraction cylinder; 10. Inner cavity of the air extraction cylinder; 11. Air extraction hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further illustrates the above solutions with specific embodiments. It should be understood that these embodiments are used to illustrate the present utility model rather than to limit the scope of the present utility model. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional production. Embodiment 1

[0022] As Figure 1As shown in the figure, the present utility model provides an air extraction one-way valve device for an air extraction type negative pressure drainage device, which is a component of the air extraction type negative pressure drainage device. The air extraction type negative pressure drainage device includes a drainage bottle, and there is a one-way valve housing 5 on the drainage bottle cap 2; the one-way valve housing 5 has an injection port, and the one-way valve housing 5 is provided with an air extraction hole 11 located in the inner cavity of the drainage bottle body 3; a sealing cover 7 isolates the external space of the upper injection opening of the one-way valve housing 5; a one-way seal 8 is arranged in the inner cavity of the one-way valve housing 5, and the one-way seal 8 can closely adhere to the air extraction hole 11 to close the passage; the isolated space of the sealing cover 7 can be directly or indirectly connected to a negative pressure pump outward.

[0023] In this example, the inner cavity of the one-way valve housing 5 flows unidirectionally outward to the negative pressure pump, with a simple structure and can efficiently form an air extraction passage. Embodiment Two

[0024] As Figures 1 to 4 As shown in the figure, the present utility model provides an air extraction one-way valve device for an air extraction type negative pressure drainage device, which is a component of the air extraction type negative pressure drainage device. The air extraction type negative pressure drainage device includes a drainage bottle and a negative pressure pump. There is a one-way valve housing 5 on the drainage bottle cap 2 which is integrated with the air extraction cylinder 9 of the negative pressure pump and is placed on one side of the air extraction cylinder 9; the upper part of the one-way valve housing 5 is open, and the air extraction hole 11 arranged at the bottom of the one-way valve housing 5 is located in the inner cavity of the drainage bottle body 3; the drainage bottle cap 2 is provided with a sealing cover 7 that isolates the connection between the upper opening of the one-way valve housing 5 and the external space of the negative pressure drainage device; a one-way seal 8 is arranged in the inner cavity of the one-way valve housing 5, a spring 4 is arranged above the one-way seal 8, and the air extraction hole 11 is below; the inner cavity of the one-way valve housing 5 can be communicated with the air extraction cylinder 9 with an opening downward through the sealed space of the sealing cover 7.

[0025] In this example, the inner cavity 10 of the air extraction cylinder of the negative pressure pump has an opening downward and is internally provided with an air extraction plug.

[0026] The air extraction one-way valve device in this example has a simple structure. As a component, it can simplify the structure of the air extraction type negative pressure drainage device, greatly reduce the production process and manufacturing cost of the product, reduce the ineffective air extraction wall, improve the stability performance of the product at the same time, and solve the problem of abnormal backflow of the air extraction pipeline that may occur when the air extraction pipeline is placed arbitrarily in the drainage container when it is not necessary. Embodiment Three

[0027] As Figures 1 to 4As shown in the figure, the present utility model provides a gas extraction one-way valve device for a gas extraction type negative pressure drainage device, which is a component of the gas extraction type negative pressure drainage device. The gas extraction type negative pressure drainage device includes a drainage bottle and a negative pressure pump. There is a one-way valve housing 5 on the drainage bottle cap 2 which is integrated with the air extraction cylinder 9 of the negative pressure pump and is placed on one side of the air extraction cylinder 9. The upper part of the one-way valve housing 5 is open, and the air extraction hole 11 at the bottom of the one-way valve housing 5 is located in the inner cavity of the drainage bottle body 3. A sealing cover 7 is provided on the drainage bottle cap 2 to isolate the upper opening of the one-way valve housing 5 from the external space of the negative pressure drainage device. A one-way seal 8 is arranged in the inner cavity of the one-way valve housing 5. The opening of the one-way valve housing 5 and the air inlet hole 6 at the top of the air extraction cylinder 9 with the opening facing down are both located in the sealed space of the sealing cover 7. A spring 4 is arranged above the one-way seal 8, and an air extraction hole 11 is arranged below. The one-way seal 8 is a rubber pad or block with a head larger than the tail. The drainage bottle is provided with a negative pressure adjustment device.

[0028] In this example, the gas extraction type negative pressure drainage device can be configured with a negative pressure display device 1; the negative pressure pump can be a pressing type, or a single-hand clamping and pressurizing type, or a lifting type manual negative pressure pump.

[0029] The gas extraction one-way valve device in this example has a simple structure. As a component, it can simplify the structure of the gas extraction type negative pressure drainage device, greatly reduce the production process and manufacturing cost of the product, improve the stability and working efficiency of the product at the same time, and solve the problem of abnormal backflow of the gas extraction pipeline that may occur when the drainage container is not placed properly.

[0030] The above has introduced in detail a gas extraction one-way valve device for a gas extraction type negative pressure drainage device provided by the present utility model. The principle and implementation mode of the present utility model are expounded in this article. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A vacuum check valve device for a vacuum type negative pressure drainage device, which is a component of the vacuum type negative pressure drainage device, wherein the vacuum type negative pressure drainage device comprises a drainage bottle, and is characterized in that: The one-way valve housing and the drainage bottle cap are integrally formed, the one-way valve housing is provided with an exhaust hole located in the inner cavity of the drainage bottle body, the one-way valve housing is provided with a one-way seal, and a sealing cover is provided to isolate the injection-molded opening of the one-way valve housing from the external space, the sealing cover isolating the space to be directly or indirectly connected to the negative pressure pump in one direction.

2. The one-way valve device for vacuum type negative pressure drainage device according to claim 1, characterized in that: The vacuum type negative pressure drainage device is provided with a negative pressure pump, and the vacuum cylinder with a downward opening of the negative pressure pump and the one-way valve housing are manufactured as one piece.

3. The one-way valve device for vacuum type negative pressure drainage device according to claim 1, characterized in that: A spring is arranged above the one-way sealing component.

4. The one-way valve device for vacuum type negative pressure drainage device according to claim 1, characterized in that: The one-way seal is a rubber pad or block with a head portion larger than a tail portion.

5. The one-way valve device for vacuum type negative pressure drainage device according to claim 1, characterized in that: The drainage bottle is provided with a negative pressure regulating device.

6. The one-way valve device for vacuum type negative pressure drainage device according to claim 1, characterized in that: The sealing cover is provided with a joint.

7. The one-way valve device for vacuum type negative pressure drainage device according to claim 2, characterized in that: An air inlet hole is arranged on the top wall of the air extraction cylinder, and an outer opening of the air inlet hole is located in the closed space of the sealing cover.

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