Compensation type adjustable negative pressure drainage system

Abstract

The utility model discloses a compensation type adjustable negative pressure drainage system which comprises a negative pressure bottle body and a negative pressure source, a negative pressure bottle cap right above the negative pressure bottle body is provided with a one-way valve shell formed by sinking towards an inner cavity of the negative pressure bottle body, an inner cavity of the one-way valve shell is provided with a one-way sealing piece, and the bottom wall of the one-way valve shell is provided with an open hole; the negative pressure source comprises an air suction barrel, and a negative pressure bottle cap panel above the negative pressure bottle body extends towards one side to form the top wall of the air suction barrel of the negative pressure source; an air exhaust hole is formed in the air exhaust cylinder; the peripheral space of the upper opening of the one-way valve shell is sealed by a sealing cover, and the space sealed by the sealing cover is a one-way sealed air exhaust passage outwards far away from the inner cavity of the negative pressure bottle body; and the negative pressure source is provided with a movable air exhaust handle. The utility model aims to provide a portable disposable negative pressure compensation and whole-course negative pressure accurate output drainage system which is simplified in structure, low in cost, high in air exhaust efficiency, free to place, diversified in air exhaust operation, especially suitable for negative pressure compensation of patients or female operators, small and convenient.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a compensation type adjustable negative pressure drainage system. Background Art

[0002] The negative pressure drainage system is a medical device widely used in clinical practice for draining residual and exudative fluids from the wounds of various postoperative patients, and can effectively promote the repair of wound tissues.

[0003] For current adjustable negative pressure drainers, through long-term research and observation, we have found that such products have complex structures, large initial ineffective space volumes during air extraction, low air extraction efficiency, large sizes of negative pressure pumps occupying a large amount of space, inconvenient and laborious air extraction (especially for patients themselves or female operators), inconvenient to carry, and abnormal backflow of the air extraction pipeline when placed horizontally or upside down. Summary of the Invention

[0004] The purpose of the utility model is to provide a drainage system with a simplified structure, low cost, high air extraction efficiency, can be placed arbitrarily, diverse air extraction operations, especially suitable for negative pressure compensation by patients themselves or female operators, small and convenient, portable, disposable, and accurate output of full-course negative pressure.

[0005] To solve these problems in the prior art, the technical solution provided by the utility model is: a compensation type adjustable negative pressure drainage system, including a negative pressure bottle body and a negative pressure source. There is a one-way valve housing formed by the depression of the negative pressure bottle cap directly above the negative pressure bottle body. There is a one-way seal in the inner cavity of the one-way valve housing, and an opening is provided on the bottom wall of the one-way valve housing; the negative pressure source includes an air extraction cylinder, and the panel of the negative pressure bottle cap above the negative pressure bottle body extends to one side to form the top wall of the air extraction cylinder of the negative pressure source; the air extraction cylinder is provided with an air extraction hole; the outer space of the upper opening of the one-way valve housing is sealed by a sealing cover, and the space sealed by the sealing cover is a one-way closed air extraction passage away from the inner cavity of the negative pressure bottle body; the negative pressure source is provided with a movable air extraction handle, and a vertical air extraction pull rod that moves synchronously with the movable air extraction handle is arranged inside the air extraction cylinder, and an air extraction plug is arranged on the upper part of the air extraction pull rod.

[0006] In a preferred implementation state, the movable air extraction handle is located on one side of the air extraction cylinder, and a fixed air extraction handle is arranged below the movable air extraction handle.

[0007] In a preferred implementation state, the negative pressure bottle cap on one side of the air extraction cylinder is provided with a side edge that can be adhesively sealed with the opening edge of the negative pressure bottle body.

[0008] In a preferred implementation state, a pressure regulating device is further provided. A one-way device is arranged in the drainage chamber outside the pressure regulating chamber below the pressure regulating piston in the pressure regulating device.

[0009] In a preferred implementation state, the air extraction hole is located on the top wall or the side wall of the air extraction cylinder, and the side wall air extraction hole leads to the inner cavity of the one-way valve housing through a passage inside the negative pressure bottle cap.

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

[0011] In a preferred implementation state, a cross plate for placing a liquid discharge pipeline is arranged below the negative pressure bottle body.

[0012] In a preferred implementation state, a liquid discharge port is arranged on the bottom wall of the negative pressure bottle body, a liquid discharge pipe is connected to the liquid discharge port, and a liquid discharge switch is arranged on the liquid discharge pipe; the bottom wall of the negative pressure bottle body is placed on a guiding base, a storage compartment for horizontally storing the liquid discharge pipe or / and the liquid discharge switch is arranged on the guiding base, and a return spring is supported or placed on the guiding base.

[0013] In a preferred implementation state, a limiting guiding groove for the downward linear movement of the air extraction pull rod is arranged below the air extraction cylinder.

[0014] In a preferred implementation state, a limiting guiding mechanism for the connection part of the air extraction pull rod and the movable air extraction handle is arranged on one side below the air extraction cylinder.

[0015] All the above spatial orientations are described based on the normal upright state of the product.

[0016] Compared with the solutions in the prior art, the advantages of the present utility model are as follows:

[0017] 1. The structure is simple, the production process and cost are greatly reduced, and it is more suitable as a disposable product;

[0018] 2. It can be placed randomly without the occurrence of problems such as the backflow of the air extraction pipeline and other issues;

[0019] 3. The proportion of the effective air extraction cavity is increased, which can improve the air extraction efficiency and increase the limit value of the air extraction negative pressure;

[0020] 4. There are at least two air extraction operation methods, which are particularly suitable for patients themselves or female operators to perform negative pressure compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The structures, proportions, sizes, etc. illustrated 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 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 covered by the technical content disclosed in the present utility model.

[0022] Figure 1 Structural schematic diagram (front view) of an embodiment of the present utility model;

[0023] Figure 2 Top view of an embodiment of the present utility model;

[0024] Figure 3 Half-sectional view of an embodiment of the present utility model;

[0025] Figure 4 Partial enlarged view of Embodiment A of the present utility model;

[0026] Figure 5 Half-sectional view of an embodiment of the present utility model;

[0027] Figure 6 Stereogram of an embodiment of the present utility model;

[0028] Figure 7 Stereogram of the negative pressure bottle cap, negative pressure bottle body, and guiding base in an embodiment of the present utility model;

[0029] Figure 8 Stereogram of the guiding base in an embodiment of the present utility model.

[0030] The digital markings shown in the figure represent:

[0031] 1, negative pressure indicator; 2, sealing cover; 3, negative pressure bottle cap; 4, movable air extraction handle; 5, fixed air extraction handle; 6, guiding base; 7, guiding groove; 8, negative pressure bottle body; 9, air extraction transmission seat; 10, air extraction plug; 11, pressing plate; 12, limiting plate; 13, air extraction cylinder; 14, return spring; 15, liquid discharge switch; 16, liquid discharge pipe; 17, air extraction hole; 18, sealing member; 19, one-way valve housing; 20, spring; 21, pressure regulating device; 22, one-way device; 23, drainage chamber. Detailed implementation manners

[0032] 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.

[0033] Embodiment 1

[0034] As Figure 1-4As shown in the figure, the present utility model provides a compensating adjustable negative pressure drainage system, which includes a negative pressure bottle body 8 and a negative pressure source. Above the negative pressure bottle body 8, the negative pressure bottle cap 3 has a one-way valve housing 19 that is recessed into the inner cavity of the negative pressure bottle body 8. The inner cavity of the one-way valve housing 19 accommodates a one-way seal 18, and the bottom wall of the one-way valve housing 19 is provided with an opening leading to the inner cavity of the negative pressure bottle body 8. The negative pressure source includes a syringe 13, and the panel of the negative pressure bottle cap 3 above the negative pressure bottle body 8 extends to one side to form the top wall of the syringe 13. The syringe 13 is provided with an air extraction hole 17. The outer space around the upper opening of the one-way valve housing 19 is sealed by a sealing cover 2, and the sealed space formed by the sealing cover 2 forms a one-way closed air extraction passage from the inner cavity of the one-way valve housing 19 to the air extraction inner cavity of the syringe 13. The negative pressure source is provided with a movable air extraction handle 4. Inside the syringe 13, there is a vertical air extraction pull rod that moves synchronously with the movable air extraction handle 4, and the top of the air extraction pull rod is provided with an air extraction plug 10.

[0035] During air extraction in this example, negative pressure is generated in the syringe 13, and the gas in the inner cavity of the negative pressure bottle body 8 is extracted through the sealed space of the sealing cover 2. Since the negative pressure bottle cap 3, the one-way valve housing 19, and the syringe 13 are integrally formed, the structure can be simplified, the cost can be reduced, and the air extraction efficiency can be improved. Moreover, the blind end of the syringe 13 is at the top and the opening is at the bottom, which is convenient for operation and easy to exert force. At the same time, since the sealed space formed by the sealing cover 2 forms a one-way closed passage from the inner cavity of the one-way valve housing 19 to the air extraction inner cavity of the syringe 13 instead of an air extraction pipeline, the ineffective cavity of the syringe 13 is significantly reduced, so the air extraction efficiency is high, the ultimate air extraction is achieved, and the negative pressure value is high.

[0036] Embodiment Two

[0037] As Figure 1-8As shown in the figure, a compensated adjustable negative pressure drainage system includes a negative pressure bottle body 8 and a manual negative pressure source, which are located on both sides respectively; the upper wall of the negative pressure bottle cap 3 and the upper wall of the air extraction cylinder 13 are integrally injection molded on the same plane. There is a one-way valve housing 19 formed by recessing towards the negative pressure bottle body 8 on the upper wall of the negative pressure bottle cap 3 above the negative pressure bottle body 8. There is a hole at the bottom of the one-way valve housing 19 leading to the inner cavity of the negative pressure bottle body 8. A one-way seal 18 is arranged in the cavity of the one-way valve housing 19, and a spring 20 is arranged above the seal 18; an air extraction hole 17 is arranged on the upper wall of the air extraction cylinder 13; a sealing groove or convex edge that can be adhesively sealed with the sealing cover 2 is arranged in a circle around the opening of the one-way valve housing 19 and the periphery of the air extraction hole 17; on the negative pressure bottle cap 3 above the negative pressure bottle body 8 on one side of the air extraction cylinder 13, there is a side edge that can be adhesively sealed with the upper opening of the negative pressure bottle body 8; the air extraction cylinder 13 is matched with a U-shaped air extraction driving seat 9. The inner side of the air extraction driving seat 9 is a vertical air extraction pull rod located directly below the upper wall of the air extraction cylinder 13. A pressing plate 11, an air extraction plug 10, and a limiting plate 12 are arranged in sequence at the top of the air extraction pull rod. The air extraction plug 10 is restricted to move between the two. On the other side of the air extraction driving seat 9, there is a movable air extraction handle 4 outside the air extraction cylinder 13. The end of the vertical rod below the movable air extraction handle 4 is connected to the lower end of the air extraction pull rod through a connecting part; a limiting and guiding groove 7 for the up-and-down linear reciprocating movement of the air extraction pull rod is arranged directly below the air extraction cylinder 13.

[0038] Press down the movable air extraction handle 4, and the force acts on the air extraction pull rod through the connecting part at the end of the vertical rod below the movable air extraction handle 4. The movement direction of the air extraction pull rod is restricted by the limiting and guiding groove 7, realizing a vertical continuous reciprocating air extraction action, that is, realizing a continuous pressing air extraction operation.

[0039] The limiting and guiding mechanism can also be arranged on one side below the air extraction cylinder 13, that is, arranged on the connecting part between the air extraction pull rod and the movable air extraction handle 4 or the vertical rod below the movable air extraction handle 4, and the effect is similar to that of the guiding groove 7.

[0040] In this example, the U-shaped air extraction driving seat 9 can also be an L-shaped air extraction driving seat, and the actual effect is similar.

[0041] In this example, a negative pressure indicator 1 can be configured to display the negative pressure level in the inner cavity of the negative pressure bottle body 8, and / or a pressure regulating device 21 can be configured to set the output negative pressure. A drainage liquid one-way device 22 can be arranged in the drainage chamber 23 leading to the outside below the pressure regulating piston in the pressure regulating device 21, which can prevent the possible backflow when there is no negative pressure in the drainage bottle.

[0042] In this example, the bottom wall of the negative pressure bottle body 8 can be provided with a liquid discharge port, the liquid discharge port is connected with a liquid discharge pipe 16, and a liquid discharge switch 15 is arranged on the liquid discharge pipe 16; the negative pressure bottle body 8 is placed on the guiding base 6, the guiding base 6 is provided with a storage compartment for horizontally storing and placing the liquid discharge pipe 16 or / and the liquid discharge switch 15, or a horizontal plate for placing the liquid discharge pipeline is arranged below the negative pressure bottle body 8; a reset spring 14 is supported or placed on the guiding base 6.

[0043] The sealed space of the sealing cover 2 can also only seal the opening of the one-way valve housing 19. The side wall of the air extraction cylinder 13 is provided with an air extraction hole 17, which leads to the inner cavity of the one-way valve housing 19 through the passage in the negative pressure bottle cap 3, and its technical effect is similar.

[0044] The air extraction cylinder 13 and the negative pressure bottle body 8 are independent of each other. The bottle cap, the one-way valve housing 19 and the air extraction cylinder 13 are integrally formed. The three form a one-way passage from the negative pressure bottle body 8 to the air extraction cylinder 13 through the sealed space of the sealing cover 2, without the need for a special connecting pipeline, which simplifies the structure, reduces the cost, reduces the space of the one-way connecting pipeline, significantly reduces the initial air extraction cavity, and significantly improves the air extraction efficiency and air extraction vacuum degree.

[0045] The opening at the bottom of the cavity of the one-way valve housing 19 is located in the inner cavity of the negative pressure bottle body 8. A sealing member 18 is arranged at the bottom of the inner cavity of the one-way valve housing 19. A spring 20 acts on the upper part of the sealing member 18 to make the sealing member closely adhere to the opening at the bottom of the cavity of the one-way valve housing 19 to close the one-way passage. Since the air extraction plug 10 is a one-way air extraction plug, the space behind the sealing member 18 leading to the air extraction cylinder 13 is at the same air pressure as the outside after the air extraction is reset. Even if the negative pressure bottle body 8 is placed horizontally and the liquid in the inner cavity submerges the opening at the bottom of the one-way valve housing 19, the liquid in the negative pressure bottle body 8 will not flow back into the cavity of the one-way valve housing 19 and the air extraction cylinder 13 after the negative pressure in the negative pressure bottle body 8 disappears.

[0046] The movable air extraction handle 4 is located on one side of the air extraction cylinder 13, or a fixed air extraction handle 5 is arranged below the movable air extraction handle 4 at the same time. In this way, the product volume can be reduced for easy carrying, and at least two air extraction operation modes can be realized, that is, single-hand pressing or single-hand clamping and squeezing air extraction operations, which are particularly suitable for patients themselves or female operators to perform negative pressure compensation.

[0047] The above has introduced in detail a compensation type adjustable negative pressure drainage system provided by the present utility model. The principle and implementation manner of the present utility model are 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 compensating adjustable negative pressure drainage system, comprising a negative pressure bottle and a negative pressure source, characterized in that: The negative pressure bottle cap just above the negative pressure bottle body is provided with a one-way valve shell which is recessed into the inner cavity of the negative pressure bottle body, the inner cavity of the one-way valve shell is provided with a one-way sealing member, and the bottom wall of the one-way valve shell is provided with an opening; the negative pressure source includes a vacuum cylinder, and the negative pressure bottle cap panel above the negative pressure bottle body extends to one side to form the top wall of the vacuum cylinder of the negative pressure source; the vacuum cylinder is provided with a vacuum hole; the peripheral space of the upper opening of the one-way valve shell is closed by a sealing cover, and the space closed by the sealing cover is a one-way closed vacuum passage outwardly away from the inner cavity of the negative pressure bottle body; the negative pressure source is provided with a movable vacuum handle, and the vacuum cylinder is provided with a vertical vacuum pull rod which moves synchronously with the movable vacuum handle, and a vacuum plug is provided on the upper part of the vacuum pull rod.

2. A compensating adjustable negative pressure drainage system according to claim 1, characterized in that: The movable suction handle is located at one side of the vacuum cylinder, and a fixed suction handle is arranged below the movable suction handle.

3. The compensatory adjustable negative pressure drainage system according to claim 1, characterized in that: The negative pressure bottle cap on one side of the vacuum cylinder is provided with a side edge which can be bonded and sealed with the opening edge of the negative pressure bottle body.

4. The compensatory adjustable negative pressure drainage system according to claim 1, characterized in that: A pressure regulating device is also provided, and a one-way device is provided in a drainage chamber from a pressure regulating chamber below a pressure regulating piston in the pressure regulating device to the outside.

5. The compensatory adjustable negative pressure drainage system according to claim 1, characterized in that: The air extraction hole is located on the top wall or the side wall of the air extraction cylinder, and the air extraction hole on the side wall leads to the inner cavity of the one-way valve housing through a passage in the negative pressure bottle cap.

6. The compensatory adjustable negative pressure drainage system according to claim 1, characterized in that: The movable air extraction handle is a clamping, squeezing or / and pressing movable air extraction handle.

7. The compensatory adjustable negative pressure drainage system according to claim 1, characterized in that: A horizontal plate for placing a liquid discharge pipeline is arranged below the negative pressure bottle body.

8. The compensatory adjustable negative pressure drainage system according to claim 1, characterized in that: The bottom wall of the negative pressure bottle body is provided with a discharge port, the discharge port is connected to a discharge pipe, and the discharge pipe is provided with a discharge switch; the bottom wall of the negative pressure bottle body is placed on a guide base, the guide base is provided with a storage cabinet that can horizontally store the discharge pipe and / or the discharge switch, and a reset spring is supported or placed on the guide base.

9. The compensatory adjustable negative pressure drainage system according to claim 1, characterized in that: A limiting guide groove for the downward linear movement of the air extraction rod is arranged below the air extraction cylinder.

10. The compensatory adjustable negative pressure drainage system according to claim 1, characterized in that: A limiting guide mechanism is arranged at one side below the vacuum cylinder at the connection portion between the vacuum pull rod and the movable vacuum handle.

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