Manual negative pressure pump for drainage

Abstract

The utility model discloses a manual negative pressure pump for drainage, which comprises an air exhaust cylinder, an air exhaust rod, an air exhaust plug and a reset spring, and is characterized in that the air exhaust plug is arranged at the upper part of a vertical pull rod, positioned in an inner cavity of the air exhaust cylinder, of the air exhaust rod, and the lower part of the vertical pull rod below the air exhaust cylinder extends outwards or outwards and then vertically; the extension tail end is expanded into a movable air exhaust handle, or the extension tail end is provided with the movable air exhaust handle; and the manual negative pressure pump is provided with a guide device for keeping the vertical pull rod to move vertically. The utility model aims to provide the manual negative pressure pump for drainage, which is simple and reasonable in structure and high in air exhaust efficiency, can be operated by different people in at least two operation modes, and can overcome the defects in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and particularly relates to a manual negative pressure pump for drainage. Background Art

[0002] The disposable negative pressure drainage device is widely used in clinical practice to drain the residual exudate from the patient's wound after surgery, so as to promote the repair of the patient's wound tissue. However, at present, the disposable negative pressure drainage device does not have an ideal manual negative pressure pump with a simple structure, convenient for female operation or self-operation by the patient, and capable of pumping medium and low negative pressure. Summary of the Invention

[0003] The purpose of the utility model is to provide a manual negative pressure pump for drainage, which has a simple and reasonable structure, high air extraction efficiency, at least two operation modes suitable for different groups of people to operate, and can overcome the defects of the prior art.

[0004] In order to solve these problems in the prior art, the technical solution provided by the utility model is: a manual negative pressure pump for drainage, including an air extraction cylinder, an air extraction rod, an air extraction plug, and a return spring. The air extraction rod is provided with an air extraction plug at the upper part of the vertical pull rod in the inner cavity of the air extraction cylinder. The lower part of the vertical pull rod below the air extraction cylinder extends outward or extends vertically outward again, and the extended end is expanded into a movable air extraction handle, or a movable air extraction handle is arranged at the extended end; the manual negative pressure pump is provided with a guiding device for keeping the vertical pull rod moving vertically.

[0005] In a preferred implementation state, the movable air extraction handle is a horizontal handle.

[0006] In a preferred implementation state, a fixed handle is arranged below the movable air extraction handle.

[0007] In a preferred implementation state, an air extraction joint is arranged on the upper wall or side wall of the air extraction cylinder, and a one-way valve is arranged inside the air extraction joint.

[0008] In a preferred implementation state, there is an air extraction hole on the upper wall or side wall of the air extraction cylinder. The peripheral space at the end opening of the air extraction hole is isolated by a sealing cover, and there is a one-way valve housing below the sealing cover.

[0009] In a preferred implementation state, a drainage bottle body and a bottle cap are assembled on one side of the manual negative pressure pump, and the bottle cap panel is integrally formed in the same plane as the top wall of the air extraction cylinder.

[0010] In a preferred implementation state, the movable air extraction handle is a clamping and / or pressing movable air extraction handle.

[0011] In a preferred implementation state, a guiding base is arranged below the air extraction cylinder.

[0012] In a preferred implementation state, the guiding device is a limiting guiding groove for accommodating and maintaining the linear movement of the vertical pull rod.

[0013] In a preferred implementation state, the return spring is located inside or outside the air extraction cylinder.

[0014] All the above spatial orientations are described based on the normal upright state of the product.

[0015] Compared with the solutions in the prior art, the advantages of the present utility model are as follows:

[0016] The present utility model is a manual negative pressure pump for drainage, which has a simple and reasonable structure, a small volume, a small ineffective cavity at the beginning of air extraction, a high air extraction efficiency, can realize at least two operation modes, is suitable for different people to operate, and can overcome the defects of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with 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 essence. 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 by the present utility model.

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of another embodiment of the present utility model;

[0020] Figure 3 For the present utility model Figure 2 A three-dimensional schematic diagram of the bottle body, air extraction cylinder, and guiding base of the embodiment;

[0021] Figure 4 For the present utility model Figure 2 A three-dimensional schematic diagram of the guiding base of the embodiment.

[0022] The numerical markings in the figures are represented as:

[0023] 1, check valve; 2, bottle body; 3, air extraction hole; 4, air extraction plug; 5, air extraction cylinder; 6, return spring; 7, movable air extraction handle; 8, air extraction rod; 9, limiting guiding groove; 10, fixed handle; 11, guiding base; 12, inner cavity of the air extraction cylinder; 13, bottle cap; 14, vertical gap; 15, sealing cap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The above solution will be further described below in conjunction 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

[0025] As Figure 1 shown, the present utility model provides a manual negative pressure pump for drainage. A manual negative pressure pump for drainage includes an air extraction cylinder 5, an air extraction rod 8, an air extraction plug 4, and a return spring 6. An air extraction plug 4 is fixed at the top of the vertical pull rod located in the inner cavity 12 of the air extraction cylinder. The lower part of the vertical pull rod below the air extraction cylinder 5 extends outward beyond the downward projection area of the air extraction cylinder 5, and the end expands into a horizontal movable air extraction handle 7; the manual negative pressure pump is provided with a guiding device for keeping the vertical pull rod moving vertically.

[0026] In this example, the movable air extraction handle 7 is pressed downward, and the force is transmitted to the vertical pull rod. The vertical movement of the vertical pull rod is maintained through the guiding device to realize the air extraction function.

[0027] This embodiment is simple and ingenious. It can pump air by pressing downward. The air extraction handle is placed outside the air extraction cylinder 5, and the height is shortened and the volume is reduced, which is convenient for transportation and patients to carry. In this example, a fixed handle 10 can also be provided below the movable air extraction handle 7 to realize single-handed clamping and squeezing air extraction, that is, it can simultaneously realize downward pressing and thumb and index finger clamping and squeezing air extraction operations, and it will reset automatically after releasing the hand. This example is particularly suitable for use with negative pressure drainage devices below -65 KPa. Embodiment 2

[0028] As Figures 2 to 4 shown, the present utility model provides a manual negative pressure pump for drainage. The manual negative pressure pump for drainage includes an air extraction cylinder 5, an air extraction rod 8, an air extraction plug 4, and a return spring 6. The air extraction rod 8 includes a vertical pull rod, a movable air extraction handle 7 and the connecting part between the two. An air extraction plug 4 is arranged on the upper part of the vertical pull rod located in the inner cavity 12 of the air extraction cylinder. The lower part of the vertical pull rod below the air extraction cylinder 5 extends outward and then vertically upward, and the extending end expands into a movable air extraction handle 7, or a movable air extraction handle 7 is installed at the extending end; a guiding device for keeping the vertical pull rod moving vertically is arranged below the air extraction cylinder 5; a fixed handle 10 is arranged below the movable air extraction handle 7; an air extraction joint is arranged on the upper wall or side wall of the air extraction cylinder 5, and a one-way valve 1 is arranged inside the air extraction joint; a drainage bottle body 2 is assembled on one side of the manual negative pressure pump, and the drainage bottle body 2 is communicated with the air extraction joint of the air extraction cylinder 5.

[0029] In this example, the guiding device can ensure that the vertical pull rod moves linearly downward along the guiding track. The movable air extraction handle 7 is pressed downward, and the force is transmitted to the vertical pull rod. The vertical movement of the vertical pull rod is maintained through the guiding device to easily realize air extraction.

[0030] This embodiment is simple and ingenious. It can be used to pump air by pressing downwards. The air extraction handle is placed outside the air extraction cylinder 5. The height is shortened and the volume is reduced, making it convenient for transportation and carrying around. A fixed handle 10 is provided below the movable air extraction handle 7 in this example, which can simultaneously achieve single-handed clamping and squeezing for air extraction, that is, it can both press downwards to extract air and use the thumb and index finger to clamp and squeeze for air extraction operation, and it will reset automatically when released. Embodiment Three

[0031] As Figures 2 to 4 shown, the present utility model provides a manual negative pressure pump for drainage, including an air extraction cylinder 5, an air extraction rod 8, an air extraction plug 4, and a return spring 6. The air extraction rod 8 is located at the top of the vertical pull rod in the inner cavity 12 of the air extraction cylinder, and an air extraction plug 4 is provided at the top. The lower part of the vertical pull rod below the air extraction cylinder 5 extends outwards and then upwards, and the extended end expands into a movable air extraction handle 7; the movable air extraction handle 7 is a horizontal handle; a fixed handle 10 is provided below the movable air extraction handle 7; there is an air extraction hole 3 on the top wall of the air extraction cylinder 5, and the peripheral space at the end opening of the air extraction hole 3 is isolated by a sealing cover 15. There is a one-way valve 1 housing directly below the sealing cover 15, and the opening of the one-way valve 1 housing faces the sealing cover 15; a drainage bottle body 2 with adjustable negative pressure is assembled on one side of the manual negative pressure pump. The drainage bottle body 2 is provided with a bottle cap 13 integrally formed with the air extraction cylinder 5 with the opening facing downwards; the movable air extraction handle 7 is a clamping and / or pressing movable air extraction handle; a guiding base 11 and a vertical gap 14 are provided below the air extraction cylinder 5. The guiding base 11 at the lower part is provided with a limiting guiding groove 9 for accommodating and maintaining the linear movement of the vertical pull rod and a placement for the return spring 6; the return spring 6 can be located inside or outside the air extraction cylinder 5.

[0032] The vertical gap 14 is located on one side of the guiding base 11 and is a reserved space for the up and down movement of the air extraction rod 8.

[0033] The bottle cap 13 provided on the drainage bottle body 2 in this example is integrally formed with the air extraction cylinder 5, and the air extraction pipeline and the one-way valve 1 are integrally designed, which can simplify the structure, improve production efficiency, reduce the initial ineffective space for air extraction of the air extraction cylinder 5, and improve the air extraction efficiency. The movable air extraction handle 7 on the side provides at least two operation methods, which can meet the needs of different users.

[0034] This embodiment is simple and ingenious. It can be used to pump air by pressing downwards. The air extraction handle is placed outside the air extraction cylinder 5. The height is shortened and the volume is reduced, making it convenient for transportation and carrying around, and it is very convenient to use.

[0035] The above has introduced in detail a manual negative pressure pump for drainage provided by the present utility model. The principle and implementation manner of the present utility model have been elaborated 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 manner 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 manual negative pressure pump for drainage, comprising a suction cylinder, a suction rod, a suction plug, and a return spring, characterized in that: The upper part of the vertical pull rod located in the inner cavity of the vacuum cylinder is provided with a vacuum plug, and the lower part of the vertical pull rod below the vacuum cylinder extends outward or vertically outward, and the extended end is expanded into a movable vacuum handle, or the extended end is provided with a movable vacuum handle; the manual negative pressure pump is provided with a guide device for maintaining the vertical movement of the vertical pull rod.

2. A manual negative pressure pump for drainage according to claim 1, characterized in that: The movable air extraction handle is a horizontal handle.

3. A manual negative pressure pump for drainage according to claim 1, characterized in that: A fixed handle is arranged below the movable air pumping handle.

4. A manual negative pressure pump for drainage according to claim 1, characterized in that: An air extraction joint is arranged on the upper wall or the side wall of the air extraction cylinder, and a one-way valve is built into the air extraction joint.

5. A manual negative pressure pump for drainage according to claim 1, characterized in that: An air extraction hole is arranged on the upper wall or the side wall of the air extraction cylinder, and the peripheral space of the opening at the end of the air extraction hole is isolated by a sealing cover, and a one-way valve housing is arranged below the sealing cover.

6. A manual negative pressure pump for drainage according to claim 1, characterized in that: A drainage bottle body and a bottle cap are mounted on one side of the manual negative pressure pump, and the bottle cap panel and the top wall of the air extraction cylinder are integrally formed on the same plane.

7. A manual negative pressure pump for drainage according to claim 1, characterized in that: The movable air extraction handle is a clamping or / and pressing movable air extraction handle.

8. A manual negative pressure pump for drainage according to claim 1, characterized in that: A guide base is arranged below the air extraction cylinder.

9. A manual negative pressure pump for drainage according to claim 1, characterized in that: The guide device is a limiting guide groove for accommodating and maintaining the linear motion of the vertical pull rod.

10. A manual negative pressure pump for drainage according to claim 1, characterized in that: The return spring is located inside or outside the air pumping cylinder.

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