A negative pressure drainage device integrating pressure regulation and real-time monitoring functions

Abstract

The utility model discloses a kind of negative pressure drainage devices of integrated pressure regulation and real-time monitoring function, including container, and container is provided with drainage pipeline and negative pressure pipeline;Negative pressure pipeline includes connecting pipe, and one end of connecting pipe is provided with pressure regulating valve, and the other end of pressure regulating valve is provided with filter box, and first nozzle and second nozzle are respectively provided on filter box, pressure gauge is provided on first nozzle, and second nozzle connects the negative pressure interface of container;Among them, first nozzle and second nozzle are connected by filter box inside, and pressure regulating valve is away from first nozzle and second nozzle.The utility model adopts the mode that filter box separates integrated pressure regulating valve and pressure gauge, by with side setting pressure gauge and container, reduce the pressure drop influence that filter box causes internal resistance change due to filtration time increase, to make pressure gauge accurately measure the negative pressure value in container, to improve the accuracy of pressure regulation and pressure monitoring after integrated pressure regulation and real-time monitoring function.

Description

Technical Field

[0001] This utility model relates to the field of medical drainage device technology, specifically to a negative pressure drainage device that integrates pressure regulation and real-time monitoring functions. Background Technology

[0002] Negative pressure wound therapy (NPWT) devices are medical instruments used to implement negative pressure wound therapy. They apply a pressure below atmospheric pressure to the wound surface to help remove exudate, promote blood circulation, stimulate granulation tissue growth, and accelerate wound healing. Traditional NPWT devices are typically mechanical, using pistons or one-way valves. However, these devices are difficult to precisely control and monitor during the drainage process, relying entirely on the operator's experience, resulting in generally poor drainage effectiveness.

[0003] Therefore, existing negative pressure drainage devices use a method where a pressure regulating valve and a pressure gauge are integrated and connected to a negative pressure source (in-hospital negative pressure system, negative pressure machine) for negative pressure drainage. Specifically, the pressure regulating valve and pressure gauge are directly connected, the pressure regulating valve is connected to the negative pressure source, the pressure gauge is connected to a filter, and the filter is connected to a container. The pressure regulating valve is operated by observing the pressure gauge to adjust the negative pressure of the drainage. Although this method can achieve pressure regulation and real-time monitoring, during use, as the amount of drainage material increases, its volatile or easily dispersed substances can easily clog the filter, leading to an increase in the filter's internal resistance. This causes a drop in the negative pressure inside the container. Since the pressure gauge and pressure regulating valve are isolated from the container by the filter, the pressure measured by the pressure gauge is the negative pressure from the pressure regulating valve to the filter section, making it difficult to accurately measure the negative pressure inside the container. This results in insufficient pressure monitoring accuracy for negative pressure drainage, and at the same time, the accuracy of pressure regulation is also affected.

[0004] Therefore, existing negative pressure drainage devices that directly connect the pressure regulating valve and the pressure gauge are difficult to accurately detect the negative pressure inside the container because the pressure gauge is blocked by the filter between the pressure gauge and the container. As the filter's internal resistance increases due to the accumulation of blockages, a pressure drop occurs, which affects the accuracy of pressure regulation and real-time monitoring during the negative pressure drainage process. Utility Model Content

[0005] The purpose of this invention is to provide a negative pressure drainage device that integrates pressure regulation and real-time monitoring functions, in order to solve the technical problem in the prior art where the pressure gauge is blocked by a filter between the pressure gauge and the container, resulting in increased internal resistance and pressure drop due to increased blockage of the filter, making it difficult for the pressure gauge to accurately detect the negative pressure inside the container, thus affecting the accuracy of pressure regulation and real-time monitoring during the negative pressure drainage process.

[0006] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:

[0007] A negative pressure drainage device integrating pressure regulation and real-time monitoring functions includes a container, wherein the container is connected to a drainage pipe and a negative pressure pipe through a drainage interface and a negative pressure interface provided thereon, respectively.

[0008] The negative pressure pipeline includes a connecting pipe, one end of which is equipped with a pressure regulating valve, and the other end of which is equipped with a filter box. The filter box is respectively equipped with a first nozzle and a second nozzle. The first nozzle is equipped with a pressure gauge, and the second nozzle is connected to the negative pressure interface of the container.

[0009] The first nozzle and the second nozzle are connected through the inside of the filter box, and the pressure regulating valve is located away from the first nozzle and the second nozzle.

[0010] When the other end of the connecting pipe is connected to a negative pressure system or a negative pressure machine, the negative pressure pipeline generates negative pressure in the container and the drainage pipeline. When the pressure regulating valve is adjusted, the pressure gauge detects and displays the negative pressure value in the container in real time.

[0011] As a preferred embodiment of this utility model, the filter box is provided with a third nozzle, the third nozzle is connected to the pressure regulating valve, and the third nozzle is far away from the first nozzle and the second nozzle;

[0012] The first nozzle and the second nozzle are close to each other.

[0013] As a preferred embodiment of the present invention, the filter box includes a cylindrical barrel, one end of which has a sealing cap, the third nozzle is disposed at the bottom of the cylindrical barrel, the second nozzle is disposed on the sealing cap, and the first nozzle is formed on the side wall of the cylindrical barrel and close to the sealing cap.

[0014] The cylindrical barrel is equipped with a filter element, the length of which is equal to the inner length of the cylindrical barrel, so that the filter element covers the connection between the cylindrical barrel and the first nozzle.

[0015] As a preferred embodiment of the present invention, the filter box includes a cylindrical barrel, one end of which has a sealing cap, the third nozzle is disposed at the bottom of the cylindrical barrel, the second nozzle is disposed on the sealing cap, and the first nozzle is formed on the side wall of the cylindrical barrel and close to the sealing cap.

[0016] The cylindrical barrel is equipped with a filter element, the length of which is less than the inner length of the cylindrical barrel, and it is tightly installed at the bottom of the cylindrical barrel to expose the communication port between the cylindrical barrel and the first nozzle.

[0017] As a preferred embodiment of this utility model, an elastic diaphragm is provided inside the first nozzle. The elastic diaphragm blocks the connection between the cylindrical barrel and the first nozzle. When the pressure inside the filter box changes, the elastic diaphragm deforms and changes the pressure inside the first nozzle.

[0018] The pressure gauge is used to monitor and display the pressure value inside the first nozzle.

[0019] As a preferred embodiment of this utility model, the other end of the connecting pipe is provided with a quick-connect fitting, and the connecting pipe can be detachably connected to a negative pressure system or a negative pressure machine through the quick-connect fitting.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] This utility model adopts a filter box to separate and integrate the pressure regulating valve and pressure gauge. By setting the pressure gauge and the container on the same side, the pressure drop caused by the change in internal resistance of the filter box due to the increase in filtration time is reduced. This allows the pressure gauge to accurately measure the negative pressure value in the container, thereby improving the accuracy of pressure regulation and pressure monitoring after integrating pressure regulation and real-time monitoring functions. Attached Figure Description

[0022] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of a negative pressure drainage device integrating pressure regulation and real-time monitoring functions is provided for embodiments of this utility model;

[0024] Figure 2 A schematic diagram of the filter box portion of the negative pressure drainage device with integrated pressure regulation and real-time monitoring functions is provided for Embodiment 1 of this utility model;

[0025] Figure 3 A schematic diagram of the filter box structure of the negative pressure drainage device with integrated pressure regulation and real-time monitoring functions provided in Embodiment 2 of this utility model;

[0026] Figure 4 A schematic diagram of the elastic diaphragm portion of the negative pressure drainage device that integrates pressure regulation and real-time monitoring functions, as shown in Embodiment 2 of this utility model.

[0027] The labels in the diagram represent the following:

[0028] 1-Container; 2-Negative pressure pipeline;

[0029] 11-Drainage pipe; 21-Connecting pipe; 22-Pressure regulating valve; 23-Filter box; 24-First nozzle; 25-Second nozzle; 26-Third nozzle;

[0030] 211-Quick connector; 231-Cylindrical barrel; 232-Sealing cap; 233-Filter element; 241-Pressure gauge; 242-Elastic diaphragm. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figure 1 As shown, this utility model provides a negative pressure drainage device that integrates pressure regulation and real-time monitoring functions, including a container 1. The container 1 is connected to a drainage pipe 11 and a negative pressure pipe 2 through a drainage interface and a negative pressure interface provided thereon, respectively.

[0033] The negative pressure pipeline 2 includes a connecting pipe 21. One end of the connecting pipe 21 is provided with a pressure regulating valve 22, and the other end of the pressure regulating valve 22 is provided with a filter box 23. The filter box 23 is provided with a first nozzle 24 and a second nozzle 25. The first nozzle 24 is provided with a pressure gauge 241, and the second nozzle 25 is connected to the negative pressure interface of the container 1.

[0034] The first nozzle 24 and the second nozzle 25 are connected through the inside of the filter box 23, and the pressure regulating valve 22 is away from the first nozzle 24 and the second nozzle 25.

[0035] When the other end of the connecting pipe 21 is connected to a negative pressure system or a negative pressure machine, the negative pressure pipeline 2 generates negative pressure in the container 1 and the drainage pipeline 11. When the pressure regulating valve 22 is adjusted, the pressure gauge 241 detects and displays the negative pressure value in the container 1 in real time.

[0036] The negative pressure drainage device in this embodiment mainly uses the filter box 23 to connect the first nozzle 24 and the second nozzle 25. After the connecting pipe 21 is connected to the negative pressure system or negative pressure machine to form negative pressure, the filter box 23 generates negative pressure, which in turn generates negative pressure in the second nozzle 25 and the container 1, as well as in the first nozzle 24. The first nozzle 24 and the second nozzle 25 are both connected to the filter box 23 and are separated from the pressure regulating valve 22, so that the pressure value detected by the pressure gauge 241 is closer to the negative pressure value in the container 1. Thus, while integrating the adjustable negative pressure function with the real-time monitoring function, the negative pressure value in the container 1 can be obtained more accurately for timely adjustment.

[0037] Compared to existing negative pressure drainage devices that directly integrate pressure gauges and pressure regulating valves, the negative pressure drainage device in this embodiment uses a filter box 23 to separate and integrate pressure regulating valve 22 and pressure gauge 241. The pressure gauge 241 and container 1 are connected on the same side using the first nozzle 24 and the second nozzle 25, while the pressure regulating valve 22 is separated from pressure gauge 241 and container 1 by the filter box 23 and located on opposite sides. This allows pressure gauge 241 and container 1 to be located at approximately equal negative pressure nodes, enabling pressure gauge 241 to more accurately detect the pressure inside container 1 and improve the monitoring accuracy after the integration of pressure regulation and real-time monitoring functions.

[0038] Specifically, as the amount of impurities in the filter box 23 increases with usage time, its internal resistance increases, causing a pressure drop at the end of the filter box 23 furthest from the connecting pipe 21, i.e., a pressure drop inside container 1. At this time, the pressure gauge 241, which is close to and connected to container 1, can promptly and accurately detect and display the negative pressure value inside container 1. Based on this, the operator can adjust the pressure regulating valve 22 in a timely manner according to the actual pressure value inside container 1, i.e., the pressure value displayed by the pressure gauge 241, to control the negative pressure and ensure the drainage effect.

[0039] Of course, as the accuracy of pressure gauge 241 in detecting the negative pressure value inside container 1 is improved, the accuracy of pressure regulating valve 22 in regulating the negative pressure is also improved. That is, the result of pressure regulating valve 22 in regulating the negative pressure value inside container 1 is the negative pressure value inside container 1.

[0040] The other end of the connecting pipe 21 is equipped with a quick-connect fitting 211, which allows the connecting pipe 21 to be detachably connected to a negative pressure system or negative pressure machine, such as the interface of a hospital negative pressure system or the interface of a negative pressure suction machine.

[0041] Based on the above embodiments, in order for the pressure gauge 241 to more accurately detect and display the negative pressure value inside the container 1, the detection end of the pressure gauge 241 needs to be close to the container 1 to reduce the influence of the internal resistance of the filter box 23. Therefore, as follows... Figure 1 As shown, a third nozzle 26 is provided on the filter box 23. The third nozzle 26 is connected to the pressure regulating valve 22, and the third nozzle 26 is far away from the first nozzle 24 and the second nozzle 25.

[0042] Among them, the first nozzle 24 and the second nozzle 25 are close to each other.

[0043] In this embodiment, by setting the positions of the first nozzle 24, the second nozzle 25, and the third nozzle 26, the connection path between the first nozzle 24 and the second nozzle 25 inside the filter box 23 is shortened, thereby reducing the resistance effect within the filter box 23. Conversely, by increasing the length of the connection path between the first nozzle 24, the second nozzle 25, and the third nozzle 26, the filtration effect of the filter box 23 is improved.

[0044] Of course, by integrating the pressure gauge 241 and the pressure regulating valve 22 into the filter cartridge 23, the filter cartridge 23 needs to be reusable to reduce operating costs and improve overall performance. To integrate the pressure gauge 241 and the pressure regulating valve 22 into the filter cartridge 23 and achieve more accurate pressure monitoring and regulation, the following two embodiments are provided.

[0045] Example 1:

[0046] like Figure 2 As shown, the filter box 23 includes a cylindrical barrel 231, one end of which has a sealing cap 232. A third nozzle 26 is disposed at the bottom of the cylindrical barrel 231, a second nozzle 25 is disposed on the sealing cap 232, and a first nozzle 24 is formed on the side wall of the cylindrical barrel 231 and close to the sealing cap 232.

[0047] A filter element 233 is provided in the cylindrical barrel 231. The length of the filter element 233 is equal to the inner length of the cylindrical barrel 231, so that the filter element 233 covers the communication port between the cylindrical barrel 231 and the first nozzle 24.

[0048] In this embodiment, the filter element 233 can be inserted into the cylindrical barrel 231 by opening the sealing cap 232. The filter element 233 covers the connection between the cylindrical barrel 231 and the first nozzle 24. When impurities are filtered through the filter element 233 and cause it to become clogged, its resistance increases, and the negative pressure at the sealing cap 232 decreases. Similarly, the negative pressure at the first nozzle 24, which is close to the sealing cap 232, also decreases. That is, the pressure gauge 241 can quickly respond to changes in negative pressure in the container 1, thereby achieving more accurate real-time monitoring.

[0049] Example 2:

[0050] like Figure 3 As shown, it is basically the same as in Embodiment 1, except that: a filter element 233 is provided in the cylindrical barrel 231. The length of the filter element 233 is less than the inner length of the cylindrical barrel 231, and it is installed tightly against the bottom of the cylindrical barrel 231 to expose the communication port between the cylindrical barrel 231 and the first nozzle 24.

[0051] In this embodiment, the length of the filter element 233 is less than the inner length of the cylindrical barrel 231, so that there is no filter element 233 blocking the connection between the cylindrical barrel 231 and the first nozzle 24, thereby further reducing the interference of the filter element 233 on the pressure measurement, enabling the pressure gauge 241 to detect the pressure inside the container 1 more accurately, that is, improving the accuracy of real-time monitoring and the accuracy of pressure adjustment.

[0052] Based on the above embodiment 2, since there is no filter element 233 blocking the connection between the cylindrical barrel 231 and the first nozzle 24, the detection end of the pressure gauge 241 is easily contaminated by the gas generated by the drainage substance and the tiny particles mixed in the gas, which causes the detection accuracy of the pressure gauge 241 to decay rapidly. Based on this, the following embodiment is provided.

[0053] like Figure 4 As shown, an elastic diaphragm 242 is provided inside the first nozzle 24. The elastic diaphragm 242 blocks the connection between the cylindrical barrel 231 and the first nozzle 24. When the pressure inside the filter box 23 changes, the elastic diaphragm 242 deforms and changes the pressure inside the first nozzle 24.

[0054] The pressure gauge 241 is used to monitor and display the pressure value inside the first nozzle 24.

[0055] In this embodiment, an elastic diaphragm 242 is provided at the connection between the cylindrical barrel 231 and the first nozzle 24, thereby sealing the first nozzle 24 and preventing the drainage material from contaminating the detection end of the pressure gauge 241. Furthermore, the elastic diaphragm 242 can deform according to the pressure difference between the first nozzle 24 and the cylindrical barrel 231, thereby changing the pressure inside the first nozzle 24. That is, even with isolation, the pressure gauge 241 can still monitor the pressure inside the container 1.

[0056] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A negative pressure wound therapy device integrating pressure regulation and real-time monitoring functions, characterized in that, Includes a container (1), which is connected to a drainage pipe (11) and a negative pressure pipe (2) through a drainage port and a negative pressure port provided thereon, respectively; The negative pressure pipeline (2) includes a connecting pipe (21), one end of which is provided with a pressure regulating valve (22), and the other end of which is provided with a filter box (23). The filter box (23) is provided with a first nozzle (24) and a second nozzle (25). The first nozzle (24) is provided with a pressure gauge (241), and the second nozzle (25) is connected to the negative pressure interface of the container (1). The first nozzle (24) and the second nozzle (25) are connected through the inside of the filter box (23), and the pressure regulating valve (22) is away from the first nozzle (24) and the second nozzle (25). When the other end of the connecting pipe (21) is connected to a negative pressure system or a negative pressure machine, the negative pressure pipeline (2) generates negative pressure in the container (1) and the drainage pipeline (11). When the pressure regulating valve (22) is adjusted, the pressure gauge (241) detects and displays the negative pressure value in the container (1) in real time.

2. The negative pressure drainage device integrating pressure regulation and real-time monitoring functions according to claim 1, characterized in that, The filter box (23) is provided with a third nozzle (26), the third nozzle (26) is connected to the pressure regulating valve (22), and the third nozzle (26) is far away from the first nozzle (24) and the second nozzle (25); The first nozzle (24) and the second nozzle (25) are close to each other.

3. The negative pressure drainage device integrating pressure regulation and real-time monitoring functions according to claim 2, characterized in that, The filter box (23) includes a cylindrical barrel (231), one end of which has a sealing cap (232). The third nozzle (26) is disposed at the bottom of the cylindrical barrel (231), the second nozzle (25) is disposed on the sealing cap (232), and the first nozzle (24) is formed on the side wall of the cylindrical barrel (231) and close to the sealing cap (232). A filter element (233) is provided in the cylindrical barrel (231), the length of which is equal to the inner length of the cylindrical barrel (231), so that the filter element (233) covers the communication port between the cylindrical barrel (231) and the first nozzle (24).

4. The negative pressure drainage device integrating pressure regulation and real-time monitoring functions according to claim 2, characterized in that, The filter box (23) includes a cylindrical barrel (231), one end of which has a sealing cap (232). The third nozzle (26) is disposed at the bottom of the cylindrical barrel (231), the second nozzle (25) is disposed on the sealing cap (232), and the first nozzle (24) is formed on the side wall of the cylindrical barrel (231) and close to the sealing cap (232). A filter element (233) is provided in the cylindrical barrel (231). The length of the filter element (233) is less than the inner length of the cylindrical barrel (231), and it is installed against the bottom of the cylindrical barrel (231) to expose the communication port between the cylindrical barrel (231) and the first nozzle (24).

5. A negative pressure drainage device integrating pressure regulation and real-time monitoring functions according to claim 4, characterized in that, An elastic diaphragm (242) is provided inside the first nozzle (24). The elastic diaphragm (242) blocks the communication port between the cylindrical barrel (231) and the first nozzle (24). When the pressure inside the filter box (23) changes, the elastic diaphragm (242) deforms and changes the pressure inside the first nozzle (24). The pressure gauge (241) is used to monitor and display the pressure value inside the first nozzle (24).

6. The negative pressure drainage device integrating pressure regulation and real-time monitoring functions according to claim 1, characterized in that, The other end of the connecting pipe (21) is provided with a quick-connect fitting (211), and the connecting pipe (21) is detachably connected to the negative pressure system or negative pressure machine through the quick-connect fitting (211).

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