Negative pressure display device for preset high negative pressure drainage bottle

Abstract

The utility model discloses a negative pressure display device of a preset high negative pressure drainage bottle. A negative pressure display device arranged on the preset high negative pressure drainage bottle comprises a negative pressure display shell with a vent hole in the bottom wall, a negative pressure display rod, a piston seat at the tail end of the negative pressure display rod and a negative pressure display piston on the piston seat. The spring is arranged below the piston; and the sealing ring protrudes upwards around a vent hole in the bottom wall of the inner cavity of the negative pressure display shell. The utility model aims to provide the preset high negative pressure drainage bottle negative pressure display device which is simple and reasonable in structure, does not increase the cost, does not leak air and is convenient to store and transport.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a negative pressure display device for a preset high negative pressure drainage bottle. Background Art

[0002] Preset high negative pressure is widely used in clinical practice, among which the negative pressure display using a piston is used due to its simple structure. However, we have found in clinical practice that air leakage along the piston contact surface may cause product failure during storage and transportation. Summary of the invention

[0003] The utility model aims to provide a negative pressure display device for a pre-set high negative pressure drainage bottle which has a simple and reasonable structure, does not increase the cost, does not leak, and is convenient for storage and transportation.

[0004] In order to solve these problems in the prior art, the technical solution provided by the utility model is: a negative pressure display device for a preset high negative pressure drainage bottle, the negative pressure display device configured with the preset high negative pressure drainage bottle includes a negative pressure display shell with a vent hole on the bottom wall, a negative pressure display rod, a piston seat at the end of the negative pressure display rod and a negative pressure display piston on the piston seat, a spring under the piston, and a sealing ring protruding upward around the vent hole on the bottom wall of the inner cavity of the negative pressure display shell.

[0005] In a preferred implementation state, after the preset negative pressure suction bottle is preset with high negative pressure, the bottom surface of the piston is downwardly pressed against the upper end of the piston sealing ring to close the passage from the inner cavity of the negative pressure bottle body to the inner cavity of the negative pressure display housing.

[0006] Compared with the solutions in the prior art, the advantages of the present invention are:

[0007] The negative pressure display device of the preset high negative pressure drainage bottle has a sealing ring, so after the high negative pressure is preset, the entrance from the inner cavity of the negative pressure bottle body to the inner cavity of the negative pressure display shell can be closed. Therefore, during storage and transportation, the inner cavity of the negative pressure bottle body passes through the negative pressure display device and leads to the outside world through two sealing devices with different principles, which significantly reduces the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0009] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0010] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model under a preset high negative pressure state.

[0011] The numbers in the figure indicate:

[0012] 1. Negative pressure display rod; 2. Piston; 3. Spring; 4. Sealing ring; 5. Negative pressure display housing; 6. Negative pressure bottle body. DETAILED DESCRIPTION

[0013] The above scheme is further described below in conjunction with specific embodiments. It should be understood that these embodiments are used to illustrate the present invention and are not used to limit the scope of the present invention. The implementation conditions used in the embodiments can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional production. Example

[0014] like Figure 1 , 2 As shown, the utility model provides a preset high negative pressure drainage bottle negative pressure display device, the preset high negative pressure drainage bottle comprises a negative pressure bottle body 6 and a cover body, the cover body is provided with a negative pressure display device, the negative pressure display device comprises a negative pressure display shell 5 with a vent hole on the bottom wall, a negative pressure display rod 1 in the inner cavity of the negative pressure display shell 5, a piston seat at the end of the negative pressure display rod 1 and a negative pressure display piston 2 on the piston seat, a spring 3 under the piston 2 and a sealing ring 4 protruding upward around the vent hole on the bottom wall of the inner cavity of the negative pressure display shell 5.

[0015] The sealing ring 4 may surround the vertical spring 3 or be located inside the spring 3 .

[0016] After the high negative pressure drainage bottle is preset with high negative pressure, for example, when the negative pressure is less than -75Kpa, the bottom surface of the piston 2 compresses the spring 3 downward and closes the upper end of the sealing ring 4 to close the passage from the inner cavity of the negative pressure bottle body 6 to the inner cavity of the negative pressure display shell 5. Combined with the sealing effect of the piston 2 and the negative pressure display shell 5, the possibility of leakage of the high negative pressure drainage bottle through the negative pressure display device is completely avoided.

[0017] The above is a detailed introduction to a pre-set high-negative pressure drainage bottle negative pressure display device provided by the utility model. The principle and implementation method of the utility model are explained in this article. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A negative pressure display device for a preset high negative pressure drainage bottle, characterized in that: The negative pressure display device configured with the preset high negative pressure drainage bottle includes a negative pressure display shell with a vent hole on the bottom wall, a negative pressure display rod, a piston seat at the end of the negative pressure display rod and a negative pressure display piston on the piston seat, a spring under the piston, and a sealing ring protruding upward around the vent hole on the bottom wall of the inner cavity of the negative pressure display shell.

2. A negative pressure display device for a preset high negative pressure drainage bottle according to claim 1, characterized in that: After the preset high negative pressure induction bottle is preset with high negative pressure, the bottom surface of the piston is downwardly pressed against the upper end of the sealing ring to close the passage from the inner cavity of the negative pressure bottle body to the inner cavity of the negative pressure display housing.

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