Backflow prevention negative pressure drainage device
By installing stop valves I and II and a buffer balloon in the negative pressure drainage device, the problems of low drainage efficiency, unstable negative pressure, and backflow infection in traditional drainage devices are solved, achieving a stable drainage process and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional drainage devices suffer from low drainage efficiency, inaccurate negative pressure control, potential tissue damage, and increased risk of infection due to backflow of drainage material.
A negative pressure drainage device for preventing backflow was designed, comprising a stop valve I and a stop valve II to prevent liquid backflow. It is combined with a buffer storage balloon and a micro air pump to maintain stable negative pressure. The stop valve I prevents the liquid in the negative pressure balloon from flowing back through the drainage tube, and the stop valve II prevents the liquid in the drainage bag from flowing back into the negative pressure balloon. The negative pressure is balanced by the buffer storage balloon.
It achieves stable negative pressure during the drainage process, prevents backflow of drainage material, reduces the risk of infection, avoids tissue damage, and improves drainage efficiency and safety.
Smart Images
Figure CN224008787U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of medical apparatus and instruments, concretely relates to a negative pressure drainage device of anti -back flow. BACKGROUND
[0002] In the medical field, drainage technology is one of the important means of postoperative care, wound treatment and infection control. The traditional drainage device mainly drains the body fluid, gas or secretion in the body through gravity drainage or simple negative pressure suction to promote wound healing and prevent infection. However, gravity drainage or simple negative pressure suction has certain shortcomings in practical application.
[0003] Gravity drainage relies on the natural flow of liquid gravity, and the drainage efficiency is low. Simple negative pressure suction generally produces negative pressure to suck liquid or gas by manually squeezing the negative pressure ball. However, this method is not accurate in negative pressure control, and the overall extraction process is uneven. The extraction speed is fast in the initial stage of high negative pressure, which may cause tissue damage. In the later stage, insufficient negative pressure may lead to incomplete drainage. In addition, the traditional negative pressure drainage method generally lacks effective anti-backflow mechanism, and the drainage material may flow back to the wound, increasing the risk of infection. SUMMARY
[0004] The utility model solves the problem of providing a negative pressure drainage device of anti-back flow to improve the problems in the prior art.
[0005] The technical scheme provided by the utility model to solve the above problems is: a negative pressure drainage device of anti-back flow, comprising a negative pressure ball, one end of the negative pressure ball is connected with a drainage tube, a liquid stop valve I is arranged at the connection between the negative pressure ball and the drainage tube, the liquid stop valve I is used to prevent the liquid in the negative pressure ball from flowing back through the drainage tube, a liquid discharge port is arranged at the other end of the negative pressure ball, the liquid discharge port is used to discharge the liquid in the negative pressure ball, a catheter is connected to the liquid discharge port, one end of the catheter away from the negative pressure ball is connected with a drainage bag, the drainage bag is used to collect the liquid in the negative pressure ball, a liquid stop valve II is arranged on the liquid discharge port, the liquid stop valve II is used to prevent the liquid in the drainage bag from flowing back to the negative pressure ball.
[0006] A negative pressure air pipe is arranged on one side of the negative pressure ball close to the liquid discharge port, a buffer gas storage ball is communicated on the negative pressure air pipe, the buffer gas storage ball is used to balance the negative pressure of the negative pressure ball, a micro air pump is communicated on the buffer gas storage ball, and the micro air pump is used to generate negative pressure.
[0007] A one-way valve I is installed on the negative pressure air pipe, and the one-way valve I is used to prevent the gas-liquid in the negative pressure ball from flowing back to the buffer gas storage ball.
[0008] The buffer gas storage ball and the negative pressure air pipe are detachably connected.
[0009] The micro air pump is provided with a one-way valve II for preventing gas-liquid backflow in the buffer gas storage ball to the micro air pump.
[0010] The drainage tube is cross-shaped at the end away from the negative pressure ball.
[0011] Compared with the prior art, the utility model has the advantages that: the utility model discloses a liquid stop valve I and a liquid stop valve II, the liquid stop valve I is used for preventing liquid in the negative pressure ball 1 from backflowing through the drainage tube, and the liquid stop valve II is used for preventing liquid in the drainage bag from backflowing to the negative pressure ball, thereby effectively preventing the backflow of drainage to the wound and causing infection; secondly, the utility model discloses a buffer gas storage ball for balancing the negative pressure of the negative pressure ball, so that the negative pressure of the negative pressure ball is balanced all the time when the micro air pump is extracted, the buffer gas storage ball can absorb pressure fluctuation, the negative pressure is stable during the drainage process, and the extraction force is not too large due to the unbalanced negative pressure, thereby causing tissue damage. BRIEF DESCRIPTION OF DRAWINGS
[0012] The accompanying drawings, which are included to provide a further understanding of the utility model, form a part of the utility model and help explain the utility model, and do not constitute improper limitations on the utility model.
[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.
[0014] Figure 2 It is the three-dimensional structure schematic diagram of the drainage tube of the utility model.
[0015] Fig. 1 is a negative pressure ball; 2 is a drainage tube; 3 is a liquid outlet; 4 is a catheter; 5 is a drainage bag; 6 is a liquid stop valve I; 7 is a liquid stop valve II; 8 is a negative pressure air pipe; 9 is a buffer gas storage ball; 10 is a micro air pump; 11 is a one-way valve I; 12 is a one-way valve II. DETAILED DESCRIPTION
[0016] The embodiment of the utility model will be described in detail below by combining with the drawings and the embodiment, so that the realization process of how to apply technical means to solve technical problems and achieve technical effects of the utility model can be fully understood and implemented.
[0017] In the description of the utility model, it is necessary to explain that, for the direction words, such as the term "center", "transverse", "vertical", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of narrating the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the utility model.
[0018] In addition, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more features, and in the description of the utility model, the meaning of "several" is two or more than two, unless otherwise explicitly specified and limited.
[0019] In the utility model, unless otherwise explicitly specified and limited, the terms "assembly", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, and can also be detachably connected or integrally connected. It can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, and it can be connected internally between two elements. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0020] It should be understood that when used in the specification and the appended claims, the terms "include" and "contain" indicate the existence of the described features, whole, steps, operations, elements and / or components, but do not exclude the existence or addition of one or more other features, whole, steps, operations, elements, components and / or sets thereof.
[0021] It should also be understood that the terms used in the description of the utility model embodiments herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model embodiments. As used in the description of the utility model embodiments and the appended claims, unless the context clearly indicates otherwise, the singular form "a", "an" and "the" is intended to include the plural form.
[0022] The specific embodiments of the utility model are as follows Figure 2As shown, a backflow prevention negative pressure drainage device, including a negative pressure ball 1, the lower end of the negative pressure ball 1 is connected with a drainage tube 2, the end of the drainage tube 2 away from the negative pressure ball 1 is cross-shaped, facilitating the effusion in the patient's body to enter the negative pressure ball 1, the connection between the negative pressure ball 1 and the drainage tube 2 is provided with a liquid stop valve I 6, the liquid stop valve I 6 is used for preventing the liquid in the negative pressure ball 1 from flowing back through the drainage tube 2, the upper end of the negative pressure ball 1 is provided with a liquid outlet 3, the liquid outlet 3 is used for discharging the liquid in the negative pressure ball 1, the liquid outlet 3 is connected with a catheter 4, the end of the catheter 4 away from the negative pressure ball 1 is connected with a drainage bag 5, the drainage bag 5 is used for collecting the liquid in the negative pressure ball 1, the liquid outlet 3 is provided with a liquid stop valve II 7, the liquid stop valve II 7 is used for preventing the liquid in the drainage bag 5 from flowing back to the negative pressure ball 1.
[0023] The side of the negative pressure ball 1 close to the liquid outlet 3 is provided with a negative pressure air pipe 8, the negative pressure air pipe 8 is communicated with a buffer gas storage ball 9, the buffer gas storage ball 9 is used for balancing the negative pressure of the negative pressure ball 1, the buffer gas storage ball 9 is communicated with a micro air pump 10, the micro air pump 10 is used for generating negative pressure, a certain amount of negative pressure can be stored through the buffer gas storage ball 9, so as to reduce the frequent starting of the micro air pump 10 and prolong the service life of the micro air pump 10.
[0024] The negative pressure air pipe 8 is installed with a one-way valve I 11, when the micro air pump 10 is not in the extraction state, the one-way valve I is in the closed state, used for preventing the gas-liquid in the negative pressure ball 1 from flowing back to the buffer gas storage ball 9, the buffer gas storage ball 9 is detachably connected with the negative pressure air pipe 8, the micro air pump 10 is provided with a one-way valve II 12, the buffer gas storage ball 9 is detachably connected with the micro air pump 10, the one-way valve II 12 is used for preventing the gas-liquid in the buffer gas storage ball 9 from flowing back to the micro air pump 10.
[0025] The above only describes the best embodiment of the utility model, but cannot be understood as the limitation of claims. The utility model is not only limited to the above embodiments, and the specific structure allows changes. Any changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.
Claims
1. A negative pressure drainage device for preventing backflow, comprising a negative pressure ball (1), one end of which is connected to a drainage tube (2), characterized in that, A stop valve I (6) is provided at the connection between the negative pressure ball (1) and the drainage tube (2). The stop valve I (6) is used to prevent the liquid in the negative pressure ball (1) from flowing back through the drainage tube (2). A drain port (3) is provided at the other end of the negative pressure ball (1). The drain port (3) is used to discharge the liquid in the negative pressure ball (1). A conduit (4) is connected to the drain port (3). A drainage bag (5) is connected to the end of the conduit (4) away from the negative pressure ball (1). The drainage bag (5) is used to collect the liquid in the negative pressure ball (1). A stop valve II (7) is provided on the drain port (3). The stop valve II (7) is used to prevent the liquid in the drainage bag (5) from flowing back into the negative pressure ball (1).
2. The backflow prevention negative pressure drainage device according to claim 1, characterized in that, The negative pressure ball (1) is provided with a negative pressure air pipe (8) on the side near the drain port (3). A buffer storage ball (9) is connected to the negative pressure air pipe (8). The buffer storage ball (9) is used to balance the negative pressure on the negative pressure ball (1). A micro air pump (10) is connected to the buffer storage ball (9). The micro air pump (10) is used to generate negative pressure.
3. The backflow prevention negative pressure drainage device according to claim 2, characterized in that, A one-way valve I (11) is installed on the negative pressure air pipe (8). The one-way valve I (11) is used to prevent the gas and liquid in the negative pressure ball (1) from flowing back to the buffer storage ball (9).
4. The backflow prevention negative pressure drainage device according to claim 3, characterized in that, The buffer storage balloon (9) and the negative pressure air pipe (8) are detachably connected.
5. The backflow prevention negative pressure drainage device according to claim 4, characterized in that, The micro air pump (10) is equipped with a one-way valve II (12), which is used to prevent the gas and liquid in the buffer storage balloon (9) from flowing back to the micro air pump (10).
6. The backflow prevention negative pressure drainage device according to claim 1, characterized in that, The end of the drainage tube (2) away from the negative pressure ball (1) is cross-shaped.