Negative pressure drainage device

Abstract

The utility model relates to the technical field of medical instruments, and provides a negative pressure drainage device which is mainly used for drainage of stomach contents and comprises a container body, a reset spring and a drain valve, the container body is provided with an exhaust port and a drainage tube, and the container body collects liquid discharged from a drainage part from the drainage tube through negative pressure; the reset spring is arranged in the container body, one end of the reset spring is connected with the top of the container body, the other end of the reset spring is connected with the bottom of the container body, and the reset spring drives the container body to reset after the container body is compressed; the drain valve is arranged at the bottom of the container body and used for draining liquid in the container body. Liquid in the container main body can be quickly emptied through the drain valve, so that inconvenience caused by frequent replacement of the drainage container is greatly reduced, the medical cost is reduced, the economic burden of a patient is relieved, meanwhile, the workload of medical staff is also remarkably reduced, and the working efficiency is improved. In addition, the drainage device can accurately meter the drained liquid.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a negative pressure drainage device. Background Art

[0002] The contents of this section merely provide background information related to the present invention and may not constitute prior art.

[0003] Negative pressure drainage devices play a vital role in the medical field, especially when dealing with gastrointestinal diseases related to excessive gastric contents. This drainage device for handling gastric contents is specially designed for gastric drainage. By connecting a gastric tube, it can perform effective drainage operations when the patient's intragastric pressure is too high or too much content accumulates, thereby achieving the purpose of gastrointestinal decompression. The contents drained from the stomach through the negative pressure drainage device are mostly in the form of chyle, which reflects the products of the digestive process in the stomach and possible pathological changes. The observation and analysis of these drainage materials provide valuable reference information for doctors to judge the condition and formulate treatment plans.

[0004] In an emergency, if a patient accidentally ingests a toxic substance (such as pesticides), once discovered and sent to the hospital, in addition to immediate gastric lavage, using a negative pressure drainage device to completely expel the toxic substances and contents remaining in the stomach is a key measure to save lives and reduce the absorption of toxic substances. In addition, for patients whose gastric contents or food residues stimulate the pancreas to secrete excessive pancreatic juice, thereby exacerbating pancreatitis symptoms or intestinal obstruction, timely drainage of gastric contents can significantly reduce the risk of these complications and prevent the condition from worsening. For example, for patients undergoing cardiopulmonary resuscitation or requiring a ventilator, gastric contents will also be drained before treatment to prevent gastric contents from refluxing into the trachea and causing suffocation.

[0005] During actual treatment, negative pressure drainage of gastric contents often produces a large amount of fluid. Existing drainage devices often cause the container to fill up quickly, requiring frequent container changes. This not only increases the workload of medical staff but can also increase the risk of infection for patients due to improper operation. Furthermore, frequent replacement of drainage containers increases medical costs. Summary of the Invention

[0006] In view of this, the purpose of this application is to provide a negative pressure drainage device that can avoid or reduce the replacement of containers in the negative pressure drainage device, reduce patient costs, and reduce the workload of medical staff.

[0007] The purpose of this application is achieved through the following technical solutions:

[0008] A negative pressure drainage device, comprising:

[0009] A container body, wherein the container body is provided with an exhaust port and a drainage tube, and the exhaust port is provided with a plug capable of opening or closing the exhaust port; the container body collects liquid discharged from the drainage portion through the drainage tube under negative pressure;

[0010] a return spring, the return spring being disposed in the container body, one end of the return spring being connected to the top of the container body, the other end of the return spring being connected to the bottom of the container body, and the return spring driving the container body to return to its original position after the container body is compressed;

[0011] A drain valve is provided at the bottom of the container body for discharging the liquid in the container body.

[0012] In some possible embodiments, the negative pressure drainage device further includes:

[0013] a carrier, the carrier being detachably mounted on the bottom of the container body, the carrier being provided with a flow sensor, a microcontroller, and a power supply, the carrier also being provided with a liquid channel and a receiving cavity for accommodating the flow sensor, the microcontroller, and the power supply, one end of the liquid channel being in communication with the container body, and the other end of the liquid channel being in communication with the drain valve; the flow sensor being disposed on the liquid channel and capable of measuring the flow of liquid flowing through the liquid channel; the microcontroller being electrically connected to the flow sensor to obtain a flow signal measured by the flow sensor;

[0014] a display screen, the display screen being provided on a side wall of the carrier and being electrically connected to the microcontroller to display volume data of the drainage liquid;

[0015] The power source is a rechargeable lithium battery, and is electrically connected to the flow sensor, the microcontroller and the display screen respectively.

[0016] In some possible embodiments, the bottom surface of the carrier is sunken to form a placement groove for placing the drain valve;

[0017] A buckle is provided in the placement groove to fix the drain valve.

[0018] In some possible embodiments, the carrier is cylindrical to fit the container body.

[0019] In some possible embodiments, the liquid channel is arranged radially along the carrier, and an outlet of the liquid channel is inclined downward toward the bottom of the carrier.

[0020] In some possible embodiments, the liquid discharge port of the container body is located at the center of the bottom of the container body, the bottom of the container body is funnel-shaped, and the liquid discharge port at the center is lower than the height of the edge of the bottom of the container body.

[0021] In some possible embodiments, the placement groove is located below the liquid channel.

[0022] In some possible embodiments, the height of the placement groove is equal to the height of the liquid channel.

[0023] In some possible embodiments, an opening is provided at one end of the placement groove away from the liquid channel.

[0024] In some possible embodiments, a threaded hole is provided on the top of the carrier, an external thread is provided on the side wall of the drain port at the bottom of the container body, the carrier is threadedly connected to the container body, and a sealing gasket is provided in the threaded hole of the carrier.

[0025] The technical solutions of the embodiments of the present application have at least the following advantages and beneficial effects:

[0026] The negative pressure drainage device disclosed in this application can quickly empty the liquid in the container body through the drain valve, significantly reducing the inconvenience caused by frequent replacement of drainage containers, lowering medical costs, alleviating the financial burden on patients, and significantly reducing the workload of medical staff. Furthermore, the present invention can accurately measure the drained liquid. Furthermore, a recessed groove is formed on the bottom surface of the carrier body to accommodate the drain valve. This arrangement prevents accidental damage to the drain valve when pressing the drainage container. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a negative pressure drainage device provided in Example 1 of the present utility model;

[0028] Figure 2 A schematic structural diagram of another negative pressure drainage device provided in Example 2 of the present utility model;

[0029] Figure 3 for Figure 2 sectional view of

[0030] Figure 4 for Figure 3 Schematic diagram of the structure of the middle carrier;

[0031] Figure 5 A schematic diagram of the storage of the drain valve provided in the second embodiment of the present invention;

[0032] Figure 6 for Figure 2 Cross-sectional view when the middle drain port is not located at the center of the bottom of the container body;

[0033] Figure 7 for Figure 6 Schematic diagram of the structure of the middle carrier;

[0034] Figure 8 for Figure 6 Schematic diagram of the storage of the middle drain valve;

[0035] Figure 9 for Figure 8 Schematic diagram of the structure of the middle opening.

[0036] Figure numerals: 1. Container body; 2. Exhaust port; 3. Drainage tube; 4. Drain valve; 5. Carrier; 51. Display screen; 52. Flow sensor; 53. Liquid channel; 54. Microcontroller; 55. Power supply; 56. Placement slot; 561. Buckle; 562. Opening; 57. Threaded hole; 6. Return spring; 7. Cover plug. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific implementation methods. The same figure marks in the accompanying drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the described embodiments of this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present application may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0039] As described in the background of this application, existing drainage devices often cause the container to fill up quickly during negative pressure drainage, requiring frequent container replacement and making it difficult to measure the drainage volume. To address this issue, the present invention provides the following embodiments.

[0040] Example 1

[0041] like Figure 1 As shown, the embodiment of the present application provides a negative pressure drainage device, including a container body 1, which is made of transparent or translucent medical silicone material and has a certain capacity to safely collect and store liquid discharged from the patient's body, such as chyle liquid, pus, blood or secretions after digestion and decomposition of food accumulated in the stomach. The structure of the container body 1 can be in various forms, which can be Figure 1 The bellows may also be a cylindrical tube or a rectangular tube, etc. In this embodiment 1, the structure of the container body 1 is preferably a bellows structure.

[0042] The container body 1 is provided with an exhaust port 2 and a drainage tube 3. A return spring 6 is disposed within the container body 1, with its ends connected to the upper and lower ends of the container body 1, respectively. A cover 7 is provided at the exhaust port 2, which can be placed over the exhaust port 2 to open or close the exhaust port 2. The container body 1 is used as follows: the cover 7 at the exhaust port 2 is opened, and the container body 1 is manually compressed. During the compression of the container body 1, a roller switch mounted on the drainage tube 3 is pushed to close the drainage tube 3, preventing air in the container body 1 from entering the patient's drainage area through the drainage tube 3. During the compression of the container body 1, the air in the container body 1 is discharged through the exhaust port 2. During the compression of the container body 1, the return spring 6 within the container body 1 acquires a certain elastic force. Once the bellows-shaped container body 1 is compressed into place, the cover 7 is snapped onto the exhaust port 2, completely sealing and blocking the exhaust port 2. The elastic force is then gradually released, causing return spring 6 to reset container body 1 and create negative pressure, drawing fluid from the patient's drainage area through drainage tube 3. After the fluid enters container body 1, it gradually fills container body 1. In this first embodiment, the end of drainage tube 3, distal to container body 11, is connected to a gastric tube, draining the patient's stomach contents.

[0043] Because the stomach typically has a large volume, the amount of liquid that needs to be drained from the stomach is typically large. In the prior art, when the container body 1 is full, it is necessary to replace the container body, which is both troublesome and time-consuming, and increases costs. Therefore, this embodiment provides a drain valve 4 at the bottom of the container body 1. Once the container body 1 is full, the drain valve 4 can be opened directly to drain the drainage liquid from the container body 1. The drained liquid can then be poured into a measuring cup to measure the volume of the drained liquid, thereby reducing or eliminating the need to replace the container body 1. This reduces the inconvenience and cost associated with frequent replacement of drainage containers, alleviating the financial burden on patients and reducing the workload of medical staff. Furthermore, it facilitates the measurement of the volume of drained liquid.

[0044] Example 2

[0045] Reference Figures 2 to 5 The structure shown in this embodiment is Figure 1 In addition to the first embodiment, a carrier 5 and a flow sensor 52, a microcontroller 54, a display screen 51, and a power supply 55 are provided within the carrier 5. The carrier 5 is detachably attached to the bottom of the container body 1 and is used to support the container body 1 and accommodate the aforementioned components. The power supply 55 supplies power to the flow sensor 52, the microcontroller 54, and the display screen 51. The power supply 55 is preferably a rechargeable lithium battery.

[0046] A liquid channel 53 is defined within the carrier 5 to connect the container body 1 and the drain valve 4 for draining the liquid from the container body 1. The flow sensor 52 is a micro flow sensor, such as a Hall effect liquid flow sensor, that measures the flow of liquid through the liquid channel 53.

[0047] The microcontroller 54 can be an STM32 series microcontroller, or other types of microcontrollers. Its function is to convert the flow signal of the flow sensor 52, calculate the volume of liquid flowing out within a certain period of time, and display the volume value on the display screen 51.

[0048] It should be noted that by measuring the volume of discharged liquid, one can intuitively understand the working efficiency of the negative pressure drainage device and determine whether it effectively discharges gastric contents, exudate, blood or tissue fluid from the patient's body.

[0049] Therefore, the second embodiment uses a flow sensor 52 to obtain the flow rate and calculates the flow rate within a certain period of time based on the microcontroller 24, so that medical staff do not need to measure the discharged liquid multiple times with a measuring cup as in the first embodiment. They only need to observe the data on the display screen 51 to know the volume of the drainage liquid, thereby reducing the workload of medical staff.

[0050] like Figure 3 and Figure 4 As shown, the bottom surface of the carrier 5 is sunken to form a placement groove 56 for placing the drain valve 4. Figure 1 The drain valve 4 is directly exposed to the outside. In this embodiment, a placement groove 56 is provided to accommodate the drain valve 4. Figure 5 Since the drainage container needs to be manually pressed on the container body 1 when in use, and manual pressing may unconsciously apply pressure to the drain valve 4, which may damage the pressure switch. Therefore, the placement groove 56 of the second embodiment can effectively avoid this problem.

[0051] At the same time, since the placement groove 56 is located at the bottom of the negative pressure drainage device, the drain valve 4 in the placement groove 56 cannot be fixed under the action of gravity, so a buckle 561 is set in the placement groove 56 to fix the drain valve 4.

[0052] like Figure 5 As shown, since the bottom of the container body 1 in this embodiment is circular, the carrier 5 is set to be cylindrical to fit the container body 1, aiming to improve the practicality and ease of operation of the negative pressure drainage device.

[0053] like Figure 4As shown, the liquid channel 53 is arranged radially along the carrier 5, thereby improving the space utilization of the carrier 5, enhancing the work efficiency of medical staff and the patient care experience. Specifically, by arranging the liquid channel 53 radially along the carrier 5, the spatial redundancy problem that may be caused by the axial layout is avoided. In the axial layout, to ensure smooth liquid flow and accurate monitoring of the flow sensor 52, the carrier 5 has to increase its thickness to accommodate these components. This undoubtedly increases the size and weight of the device, limiting its flexibility and portability in clinical operations, and placing unnecessary operational burdens on medical staff.

[0054] In contrast, the radial layout significantly reduces the overall thickness of the carrier 5, making the entire device more compact and lightweight, making it easier for medical staff to hold and operate. Furthermore, to ensure smooth liquid flow and ease of cleaning and maintenance, the liquid channel 53 maintains a roughly radial orientation while its outlet slopes moderately downward toward the bottom of the carrier 5, effectively promoting the natural drainage of residual liquid.

[0055] like Figure 3 As shown, in order to achieve more detailed and accurate measurement of the patient's discharged liquid, this embodiment adopts a method of precisely positioning the discharge port at the center of the bottom of the container body 1 and designing the container bottom into a funnel-shaped structure. This not only optimizes the flow path of the liquid, but also improves the accuracy and efficiency of measurement. Specifically, the funnel-shaped bottom design can guide the liquid naturally and smoothly from the high-level area of ​​the container to the discharge port in the center, effectively avoiding the stagnation and accumulation of liquid at the edges or corners of the container, thereby significantly reducing the amount of residual liquid inside the container.

[0056] After the discharge port is set at the center of the bottom of the container body 1, due to the volume interference of the flow sensor 52 and the discharge valve 4 itself, as shown in FIG. Figure 4 As shown, the placement groove 56 cannot be set at the same height as the liquid channel 53, so the placement groove 56 is set below the liquid channel 53 for storage.

[0057] If the drain port is not located at the bottom center of the container body 1, the height of the placement groove 56 can be set to be equal to the height of the liquid channel 53. Figure 6 and Figure 7 As shown, at this time, the placement groove 56 and the liquid channel 53 are located on the same straight line, which reduces the thickness of the carrier 5, reduces the impact on medical staff when using the negative pressure drainage device, and improves convenience.

[0058] like Figure 8 and Figure 9As shown, during surgery, once the container body 1 is full, the liquid needs to be emptied quickly, so convenient access to the drain valve 4 is particularly important. To optimize the operating process and improve the work efficiency and operating comfort of medical staff, this embodiment adds a spacious opening 562 at the end of the placement groove 56 away from the liquid channel 53. This opening 562 is designed to allow fingers to smoothly and unobstructedly enter the groove and easily pull out / disengage the drain valve 4.

[0059] Specifically, medical personnel only need to insert their fingers into the opening to directly touch the pipe portion of the drain valve 4. With a slight pull or click of the finger, the drain valve 4 can be smoothly pushed out from the buckle 561 along the direction of the pipe and extended out of the placement slot 56. The entire process does not require the use of additional tools, achieving "one-click" quick access, simplifying the replacement or maintenance process of the drain valve 4, reducing operation time, and also reducing the risk of contamination caused by frequent disassembly.

[0060] like Figure 4 As shown, a threaded hole 57 is provided on the top of the carrier 5, and an external thread is provided on the side wall of the discharge port at the bottom of the container body 1. The carrier 5 and the container body 1 are connected by threads. In order to increase the sealing of the threaded connection between the two, a sealing gasket is also provided in the threaded hole 57 of the carrier 5.

[0061] The carrier 5 is threadedly connected to the container body 1, which is convenient for installation and disassembly. Medical staff can easily replace or clean the container body 1 as needed, which improves the flexibility of operation and the convenience of maintenance.

[0062] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A negative pressure drainage device, characterized in that: include: A container body, wherein the container body is provided with an exhaust port and a drainage tube, and the exhaust port is provided with a plug capable of opening or closing the exhaust port; the container body collects liquid discharged from the drainage portion through the drainage tube under negative pressure; a return spring, the return spring being disposed in the container body, one end of the return spring being connected to the top of the container body, the other end of the return spring being connected to the bottom of the container body, and the return spring driving the container body to return to its original position after the container body is compressed; A drain valve is provided at the bottom of the container body for discharging the liquid in the container body.

2. The negative pressure drainage device according to claim 1, characterized in that: The negative pressure drainage device further comprises: a carrier, the carrier being detachably mounted on the bottom of the container body, the carrier being provided with a flow sensor, a microcontroller, and a power supply, the carrier being provided with a liquid channel and a receiving cavity for accommodating the flow sensor, the microcontroller, and the power supply, the carrier being provided with one end of the liquid channel being in communication with the container body, and the other end of the liquid channel being in communication with the drain valve; the flow sensor being disposed on the liquid channel and capable of measuring the flow of liquid flowing through the liquid channel; the microcontroller being electrically connected to the flow sensor to obtain a flow signal measured by the flow sensor; a display screen, the display screen being provided on a side wall of the carrier and being electrically connected to the microcontroller to display volume data of the drainage liquid; The power supply is electrically connected to the flow sensor, the microcontroller and the display screen respectively.

3. The negative pressure drainage device according to claim 2, characterized in that: The bottom surface of the carrier is sunken to form a placement groove for placing the drain valve; A buckle is provided in the placement groove to fix the drain valve.

4. The negative pressure drainage device according to claim 3, characterized in that: The supporting body is cylindrical so as to fit the container body.

5. The negative pressure drainage device according to claim 4, characterized in that: The liquid channel is arranged along the radial direction of the carrier, and the outlet of the liquid channel is inclined downward toward the bottom of the carrier.

6. The negative pressure drainage device according to any one of claims 3 to 5, characterized in that: The liquid discharge port of the container body is located at the center of the bottom of the container body. The bottom of the container body is funnel-shaped, and the liquid discharge port at the center is lower than the height of the edge of the bottom of the container body.

7. The negative pressure drainage device according to claim 6, characterized in that: The placement groove is located below the liquid channel.

8. The negative pressure drainage device according to any one of claims 3 to 5, characterized in that: The height of the placement groove is equal to the height of the liquid channel.

9. The negative pressure drainage device according to claim 8, characterized in that: An opening is provided at one end of the placement groove away from the liquid channel.

10. The negative pressure drainage device according to claim 2, characterized in that: A threaded hole is provided on the top of the carrier, and an external thread is provided on the side wall of the liquid discharge port at the bottom of the container body. The carrier is threadedly connected to the container body, and a sealing gasket is provided in the threaded hole of the carrier.

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