A fully automatic intelligent chest negative pressure drainage device

Abstract

The utility model discloses a full -automatic intelligent thoracic cavity negative pressure drainage device relates to medical instrument technical field, full -automatic intelligent thoracic cavity negative pressure drainage device includes drainage device main part and negative pressure adjusting structure, wherein, full -automatic intelligent thoracic cavity negative pressure drainage device includes drainage device main part water seal bottle and negative pressure adjusting structure water seal bottle, wherein, the drainage device main part includes hydrops tank and water seal bottle, the hydrops tank installs water seal bottle in the side of first direction, the negative pressure adjusting structure includes negative pressure adjusting pipe, negative pressure pump and filter, negative pressure adjusting pipe one end is connected in water seal bottle, negative pressure pump is connected in the other end of negative pressure adjusting pipe, and the filter is installed on negative pressure adjusting pipe. Through built -in negative pressure pump realizes independent negative pressure generation, avoided power dependence and equipment handling difficult problem, compared with manual adjusting mode reduced operation complexity and human error possibility.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a fully automatic intelligent chest cavity negative pressure drainage device. Background Technology

[0002] The fully automatic intelligent chest cavity negative pressure drainage device is a medical device specifically designed for chest cavity drainage. It uses negative pressure suction to remove accumulated air and fluid (such as blood, pus, etc.) from the chest cavity, restoring the normal negative pressure environment of the chest cavity and promoting lung re-expansion. The device consists of three chambers: a water seal chamber that is filled with sterile water to form a one-way valve to prevent gas or liquid backflow; a drainage fluid collection chamber that stores the drained fluid and is marked with graduations for easy recording; and a negative pressure control chamber that adjusts the negative pressure.

[0003] Existing fully automatic intelligent chest negative pressure drainage devices rely on a negative pressure suction device for negative pressure generation. This device requires a power source, and subsequent measurement, recording, and calculation by medical staff takes considerable time, making it difficult to promptly ascertain the negative pressure within the patient's chest cavity. Furthermore, in urgent situations, calculations can easily lead to errors. Additionally, paper-based records are inconvenient for medical staff to review on-site, resulting in delayed information access, hindering timely diagnosis and treatment, and potentially worsening the patient's condition. Moreover, negative pressure suction devices are difficult to move over long distances within a hospital setting, are inconvenient to transport, and cannot be used in emergency situations. Utility Model Content

[0004] The main purpose of this invention is to propose a fully automatic intelligent chest cavity negative pressure drainage device, which aims to make it easier for medical staff to directly obtain information from the drainage device and reduce operational procedures.

[0005] To achieve the above objectives, the present invention proposes a fully automatic intelligent chest cavity negative pressure drainage device, comprising:

[0006] The drainage device body includes a fluid collection tank and a water-sealed bottle. The fluid collection tank is mounted on one side in a first direction, and the fluid collection tank is used to store the drained fluid. The water-sealed bottle is used to observe the pressure difference between the pleural cavity and atmospheric pressure.

[0007] The negative pressure regulating structure includes a negative pressure regulating pipe, a negative pressure pump, and a filter. One end of the negative pressure regulating pipe is connected to the water seal bottle, and the negative pressure pump is connected to the other end of the negative pressure regulating pipe. The negative pressure pump is used to regulate the negative pressure inside the water seal bottle, and the filter is installed on the negative pressure regulating pipe to filter liquid droplets in the gas drawn by the negative pressure pump.

[0008] Preferably, the liquid collection tank is provided with a drainage pipe, and the drainage pipe is provided with a one-way valve, which is used to restrict the backflow of liquid in the liquid collection tank into the drainage pipe.

[0009] Preferably, the negative pressure pump is provided with a mounting plate at the bottom, and a power supply device is mounted on the mounting plate, and the power supply device is electrically connected to the negative pressure pump.

[0010] Preferably, a first detection device is installed on the liquid collection tank to detect the liquid level in the liquid collection tank, and a second detection device is installed in the water seal bottle to detect the negative pressure in the water seal bottle.

[0011] Preferably, a display device is installed on the top of the water seal bottle, and the display device is electrically connected to the first detection device and the second detection device.

[0012] Preferably, the negative pressure pump is equipped with an alarm device, which is electrically connected to the display device to warn of excessively low or high negative pressure.

[0013] Preferably, a pressure relief valve is provided on the outside of the water seal bottle to release negative pressure.

[0014] Preferably, the water-sealed bottle is filled with physiological saline, and a conduit extending to the bottom of the bottle is provided inside the water-sealed bottle. The end of the conduit is lower than the surface of the physiological saline liquid, and the conduit is connected to the collection tank.

[0015] Preferably, the liquid collection tank and the water seal bottle are provided with a connecting structure, which is used to detachably fix the liquid collection tank and the water seal bottle.

[0016] Preferably, the connection structure includes:

[0017] A connector is installed on the water seal bottle and has a connecting groove.

[0018] A connector is installed in the liquid collection tank and inserted into the connecting groove;

[0019] A screw-in connector, passing through the connector and the plug-in connector and fastened by threads, is used to prevent the plug-in connector from disengaging from the connecting groove.

[0020] The technical solution provided by this utility model includes a negative pressure regulating structure comprising a negative pressure regulating pipe, a negative pressure pump, and a negative pressure regulating valve. One end of the negative pressure regulating pipe is connected to the pressure regulating box, and the negative pressure pump is connected to the other end of the pressure regulating box. The negative pressure pump regulates the negative pressure within the pressure regulating box. The negative pressure regulating valve is installed on the negative pressure regulating pipe to prevent excessive negative pressure. The built-in negative pressure pump enables autonomous negative pressure generation, avoiding power dependence and difficulties in equipment transportation. The addition of the negative pressure regulating valve makes pressure control more precise and reduces operational complexity and the possibility of human error compared to manual adjustment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A perspective view of an embodiment of the fully automatic intelligent chest cavity negative pressure drainage device provided by this utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the medium negative pressure adjustment structure;

[0024] Figure 3 for Figure 1 Cross-sectional view of the intermediate liquid collection tank and water seal bottle;

[0025] Figure 4 for Figure 1 Enlarged cross-sectional view of part A in the middle.

[0026] Explanation of icon numbers:

[0027] 1. Drainage device body; 101. Collection tank; 102. Water seal bottle; 2. Mounting plate; 3. Power supply device; 4. Negative pressure adjustment structure; 41. Negative pressure pump; 42. Negative pressure adjustment pipe; 43. Filter; 5. Display device; 6. First detection device; 7. Second detection device; 8. Conduit; 9. Connection structure; 901. Insert; 902. Connector; 903. Screw; 10. Check valve; 11. Drainage pipe; 12. Pressure relief valve.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] 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.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] Fully automatic intelligent chest vacuum drainage devices typically rely on external negative pressure suction devices to maintain working pressure. These devices require an external power source and are relatively large, leading to inconvenience in clinical use. For example, in emergency transport or situations with limited ward space, existing equipment is inefficient due to its difficulty in carrying and large footprint.

[0033] This invention provides a fully automatic intelligent chest cavity negative pressure drainage device. Figures 1 to 4 This is an embodiment of the fully automatic intelligent chest cavity negative pressure drainage device provided by this utility model.

[0034] Please refer to the following: Figures 1 to 3 The fully automatic intelligent thoracic negative pressure drainage device includes a drainage device body 1, a water-sealed bottle 102, and a negative pressure adjustment structure 4. The drainage device body 1 includes a fluid collection tank 101 and a water-sealed bottle 102. The fluid collection tank 101 is mounted on one side in a first direction, and the fluid collection tank 101 is used to store the drained fluid. The water-sealed bottle 102 is used to observe the pressure difference between the thoracic cavity and atmospheric pressure. The negative pressure adjustment structure 4 includes a negative pressure adjustment tube 42, a negative pressure pump 41, and a filter 43. One end of the negative pressure adjustment tube 42 is connected to the water-sealed bottle 102, and the negative pressure pump 41 is connected to the other end of the negative pressure adjustment tube 42. The negative pressure pump 41 is used to adjust the negative pressure inside the water-sealed bottle 102. The filter 43 is installed on the negative pressure adjustment tube 42 and is used to filter droplets in the gas drawn by the negative pressure pump 41.

[0035] The pleural effusion tank 101 is a container used to receive and temporarily store fluid drained from the pleural cavity. The tank has a pipe connecting it to the outside environment for absorbing the fluid. The tank can be made of transparent medical-grade plastic and graduated for easy observation of fluid level changes. The water-seal bottle 102 is a device that allows medical personnel to directly observe the pressure difference between the pleural cavity and atmospheric pressure. It can be filled with saline or sterile water to form a liquid seal, allowing unidirectional gas flow. The pleural effusion tank 101 and the water-seal bottle 102 are connected by a pipe. The pipe connecting to the water-seal bottle 102 needs to extend below the liquid level inside the bottle to form a liquid seal and prevent backflow of gas or liquid. The negative pressure regulating pipe 42 is the gas passage connecting the water-seal bottle 102 and the negative pressure pump 41. A flexible silicone hose can be used for this connection. The negative pressure pump 41 is the power element that generates negative pressure; a miniature oil-free diaphragm vacuum pump can be used. The filter 43 can be a dryer to remove liquid from the gas.

[0036] The pleural effusion tank 101 and the water-sealed bottle 102 are connected via a conduit 8. The pleural effusion tank 101 draws fluid drained from the pleural cavity through another conduit. The fluid entering the pleural effusion tank 101 is impeded by the water-sealed bottle 102 and remains within the pleural effusion tank 101. The water-sealed bottle 102 forms a closed-loop system with the negative pressure pump 41 via a negative pressure regulating pipe 42. When the negative pressure pump 41 operates, it draws air from the water-sealed bottle 102 to create a negative pressure environment. The filter 43 is responsible for cleaning up any liquid droplets carried by the gas flow in the conduit. The liquid seal layer inside the water-sealed bottle 102 continuously isolates the outside air, preventing backflow and the risk of infection.

[0037] Therefore, in the technical solution provided by this utility model, the negative pressure regulating structure 4 includes a negative pressure regulating pipe 42, a negative pressure pump 41, and a filter 43. One end of the negative pressure regulating pipe 42 is connected to the water seal bottle 102, and the negative pressure pump 41 is connected to the other end of the negative pressure regulating pipe 42. The negative pressure pump 41 is used to regulate the negative pressure in the water seal bottle 102. The filter 43 is installed on the negative pressure regulating pipe 42 and is used to filter the liquid droplets in the gas extracted by the negative pressure pump 41. The self-contained negative pressure pump 41 realizes autonomous negative pressure generation, avoiding power dependence and equipment transportation difficulties. The addition of the negative pressure regulating valve makes the pressure control more precise, and reduces the complexity of operation and the possibility of human error compared with the manual adjustment method.

[0038] To prevent the fluid in the effusion tank 101 from spraying onto the patient due to backflow during use, it is necessary to restrict the flow direction of the fluid. Specifically, in this embodiment of the present invention, the effusion tank 101 is provided with a drainage tube 11, and the drainage tube 11 is provided with a one-way valve 10. The one-way valve 10 is used to restrict the backflow of fluid in the effusion tank 101 into the drainage tube 11.

[0039] A one-way valve 10 refers to a valve body that allows gas or liquid to flow in one direction. Specifically, it can be implemented by using a duckbill valve or a spring-loaded one-way valve 10. By blocking the reverse flow path, it prevents liquid or gas from flowing back into the liquid collection tank 101 during the drainage process.

[0040] When the negative pressure pump 41 is running, the gas in the water seal bottle 102 is drawn out through the negative pressure regulating pipe 42. At this time, the one-way valve 10 is in the open state to ensure gas flow. When the negative pressure pump 41 stops working or external pressure fluctuations cause liquid or gas to flow backward, the valve core of the one-way valve 10 automatically closes due to the pressure difference, blocking the backflow path. Thus, the liquid in the collection tank 101 is restricted to a preset flow direction, preventing it from being sprayed backward onto the patient. This effectively prevents liquid or gas from flowing backward, avoids the risk of contamination caused by backflow, and ensures the safety of the drainage process and the continuity of equipment operation.

[0041] Furthermore, the negative pressure pump 41 is provided with a mounting plate 2 at its bottom, and a power supply device 3 is installed on the mounting plate 2, and the power supply device 3 is electrically connected to the negative pressure pump 41.

[0042] Mounting plate 2 refers to the supporting structure used to support the negative pressure pump 41 and the power supply device 3. It can be made of metal or high-strength plastic and is fixed to the bottom of the negative pressure pump 41 by bolts or clips, forming a stable mechanical connection and ensuring a compact spatial layout between the power supply device 3 and the negative pressure pump 41. Power supply device 3 refers to the energy storage unit that provides electrical energy to the negative pressure pump 41. It can be implemented using a rechargeable lithium battery pack or a dry cell battery pack and is connected to the power interface of the negative pressure pump 41 via wires, allowing the negative pressure pump 41 to operate independently without relying on an external power source.

[0043] The mounting plate 2 is designed as a flat plate structure that matches the shape of the bottom of the negative pressure pump 41. The power supply device 3 is fixed to the surface of the mounting plate 2 via a fixing slot or strap. When the negative pressure pump 41 is started, the power supply device 3 directly supplies electrical energy to it, driving the pump body to generate negative pressure within the water seal bottle 102. Since the power supply device 3 is integrated into the mounting plate 2, there is no need to connect an external power cord or place a separate power supply device, thus effectively controlling the size of the entire drainage device. This solves the problem of the large size and inconvenience of movement caused by the external power supply device in traditional drainage devices, allowing the negative pressure pump 41 to work independently without a fixed power supply environment. It is especially suitable for emergency transport or clinical scenarios with limited bed space, while also reducing the risk of failure due to tangled power cords or loose interfaces.

[0044] In one embodiment, a first detection device 6 is installed on the liquid collection tank 101 to detect the liquid level in the liquid collection tank 101, and a second detection device 7 is provided in the water seal bottle 102 to detect the negative pressure in the water seal bottle 102.

[0045] The first detection device 6 is used to monitor the liquid volume in the liquid accumulation tank 101 in real time. Specifically, it can be implemented using a non-contact capacitive sensor or a photoelectric sensor. It determines whether the liquid volume has reached a threshold by detecting changes in the liquid level. The second detection device 7 is used to monitor the pressure state inside the water seal bottle 102. Specifically, it can be implemented using a piezoresistive pressure sensor or a capacitive pressure sensor. It determines whether the negative pressure is within a preset range by collecting pressure data in real time.

[0046] The first detection device 6 is installed on the side wall or top of the effusion tank 101. When the liquid level exceeds a preset position, the sensor triggers a signal and transmits it to an external device. The second detection device 7 is integrated inside the water-sealed bottle 102. It senses changes in negative pressure inside the bottle through a pressure-sensitive element and feeds the data back to the control system. Thus, the liquid level in the effusion tank 101 and the pressure in the water-sealed bottle 102 can be monitored in real time, preventing drainage failure or patient discomfort due to overload or abnormal negative pressure. It can promptly warn of situations where the liquid level in the effusion tank 101 exceeds the limit or the negative pressure in the water-sealed bottle 102 deviates from the safe range, ensuring a stable and controllable drainage process. It also reduces the burden of frequent manual checks by medical staff, improving clinical efficiency and patient treatment safety.

[0047] Furthermore, a display device 5 is installed on the top of the water seal bottle 102, and the display device 5 is electrically connected to the first detection device 6 and the second detection device 7.

[0048] Display device 5 refers to a device used to visualize and provide feedback on detection data. Specifically, it can be implemented using an LCD screen or LED indicator lights. It displays real-time liquid level and negative pressure parameters. Display device 5 can connect to a wireless network, automatically uploading the displayed information to a computer for reception and storage by the medical office system. Display device 5 also has a USB port for storing all displayed information. During drainage operation, the liquid level sensor continuously monitors the liquid volume in the collection tank 101 and transmits it to display device 5 via electrical signals. The pressure sensor simultaneously collects negative pressure data in the water seal bottle 102 and transmits it to display device 5. Display device 5 integrates a data processing module to convert liquid level and pressure data into visual information, such as displaying real-time values ​​on a digital screen or indicating safe threshold ranges using different colored indicator lights. When the liquid level exceeds a preset height or the negative pressure exceeds a set range, display device 5 triggers an alarm module. Real-time synchronous display of collection volume and negative pressure parameters allows medical personnel to quickly grasp the equipment's operating status, promptly identify abnormal liquid levels or pressure imbalances, and avoid decreased drainage efficiency or safety risks due to monitoring delays. The transmission of test data via electrical signals reduces human error in readings and ensures the accuracy of clinical decisions.

[0049] Medical staff cannot view display device 5 at all times, therefore a warning structure is needed to remind them.

[0050] Specifically, in the technical solution of this utility model, an alarm device is provided on the negative pressure pump 41, and the alarm device is electrically connected to the display device 5 to warn of excessively low or high negative pressure.

[0051] The alarm device refers to a device that can trigger audible and visual alarms based on detection signals. Specifically, it can be implemented using a combination of a buzzer and an LED indicator. When the detected negative pressure value exceeds the preset range, it alerts medical staff to intervene in a timely manner through audible and visual signals. The display device 5 refers to a visual interface that can provide real-time feedback of detection data. Specifically, it can be implemented using an LCD screen to simultaneously display the liquid level in the collection tank 101 and the negative pressure value in the water seal bottle 102, providing a data basis for alarm triggering.

[0052] The alarm device is connected to the display device 5 via a circuit. When the second detection device 7 detects that the negative pressure value inside the water seal bottle 102 exceeds the preset upper or lower limit, it triggers a buzzer to sound an alarm and activates the flashing LED indicator. Medical staff can observe the real-time pressure data on the display device 5 and, in conjunction with the alarm signal, determine whether the negative pressure parameters of the water seal bottle 102 need to be adjusted. For example, if the pressure regulation of the water seal bottle 102 fails during the operation of the negative pressure pump 41, causing the negative pressure value to continuously rise, the alarm device can be activated immediately to prevent damage to the patient's pleural tissues due to abnormal pressure. Real-time monitoring of the negative pressure status of the water seal bottle 102 during drainage, and immediate triggering of the alarm when the pressure exceeds the safe threshold, effectively prevents complications such as intrapleural hemorrhage or worsening pneumothorax caused by uncontrolled negative pressure, ensuring the safety and reliability of the treatment process.

[0053] In one embodiment, a pressure relief valve 12 is provided on the outside of the water seal bottle 102 to release negative pressure.

[0054] The pressure relief valve 12 is an automatic or manual valve device, specifically implemented using a mechanical spring structure. When the negative pressure inside the water seal bottle 102 exceeds a set threshold, the spring compresses, causing the valve to open and releasing the pressure. Its function is to prevent damage to the patient's thoracic tissues due to excessive negative pressure. The water seal bottle 102 is a sealed cavity used to regulate the negative pressure of the drainage system. Specifically, it can be connected to a negative pressure pump 41 to achieve internal pressure changes, and its function is to maintain a stable negative pressure environment during drainage.

[0055] The pressure relief valve 12 is fixed to the side wall of the water-sealed bottle 102 by threads or clips, and internally contains a seal and a spring assembly. When the negative pressure inside the water-sealed bottle 102 exceeds a preset range, the pressure difference between the external atmospheric pressure and the internal pressure pushes the seal to move, and the spring compresses to open the valve passage, allowing external air to enter the chamber to balance the negative pressure. When the pressure returns to a safe range, the spring resets, causing the seal to close the passage. This process requires no manual intervention and can automatically complete the pressure regulation. It automatically identifies and eliminates excessively high negative pressure during drainage, preventing damage to intrathoracic tissues due to abnormal pressure, while reducing the workload of medical staff in manually adjusting the equipment and improving the safety of clinical operations.

[0056] In one embodiment, the water-sealed bottle 102 is filled with physiological saline, and a conduit 8 extending to the bottom of the bottle is provided inside the water-sealed bottle 102. The end of the conduit 8 is lower than the surface of the physiological saline liquid, and the conduit 8 is connected to the collection tank 101.

[0057] Physiological saline refers to a sterile salt solution with a certain concentration, specifically sodium chloride solution, which forms a liquid seal barrier by maintaining the liquid level. The catheter 8 refers to a hollow tube structure, which can be made of silicone or medical-grade plastic, extending to the bottom of the bottle to ensure unobstructed liquid drainage. The outlet of the catheter 8 being below the liquid surface means that the outlet position is located below the liquid surface, which can be achieved by adjusting the length of the catheter 8 or the liquid level height, forming a submerged outlet to prevent gas backflow.

[0058] The water-seal bottle 102 is pre-filled with physiological saline to a preset level. One end of the catheter 8 passes through the top of the water-seal bottle 102 and extends to the bottom, while the other end connects to the inlet of the pleural effusion tank 101. When pleural effusion enters the water-seal bottle 102 through the catheter 8, the liquid rises along the catheter 8 and flows out from the end. Because the end is submerged in physiological saline, gas cannot enter the pleural cavity retrogradely through the catheter 8, thus achieving unidirectional drainage. A closed channel is formed between the pleural effusion tank 101 and the water-seal bottle 102 through the catheter 8, and the liquid continuously flows into the pleural effusion tank 101 under negative pressure. This stabilizes the liquid seal effect within the water-seal bottle 102, preventing seal failure due to liquid shaking or tipping. Simultaneously, the connection between the catheter 8 and the pleural effusion tank 101 enables continuous drainage, reducing the frequency of manual adjustment of the fluid level by medical staff.

[0059] Please see Figure 4 In one embodiment, the liquid collection tank 101 and the water seal bottle 102 are provided with a connecting structure 9, which is used to detachably fix the liquid collection tank 101 and the water seal bottle 102.

[0060] Furthermore, the connection structure 9 includes a connector 902, a plug-in 901, and a screw connector 903. The connector 902 is installed on the water seal bottle 102 and has a connection groove. The plug-in 901 is installed on the liquid collection tank 101 and is plugged into the connection groove. The screw connector 903 passes through the connector 902 and the plug-in 901 and is fastened by threads to prevent the plug-in 901 from disengaging from the connection groove.

[0061] Connector 902 is the component that is fixedly connected to the water seal bottle 102. It can be implemented using a grooved metal or plastic snap-fit ​​structure, and its function is to provide positioning and limiting space for connector 901. Connector 901 is the component that is fixedly connected to the liquid collection tank 101. It can be implemented using a protrusion or pin structure, and its function is to achieve initial fixation through cooperation with the connecting groove. Threaded connector 903 is the fastening component used to reinforce the connection. It can be implemented using a combination of bolts and nuts, and its function is to prevent connector 901 from coming out of the connecting groove under stress through threaded locking.

[0062] Connector 902 is the component that is fixedly connected to the water seal bottle 102. It can be implemented using a grooved metal or plastic snap-fit ​​structure, and its function is to provide positioning and limiting space for connector 901. Connector 901 is the component that is fixedly connected to the liquid collection tank 101. It can be implemented using a protrusion or pin structure, and its function is to achieve initial fixation through cooperation with the connecting groove. Threaded connector 903 is the fastening component used to reinforce the connection. It can be implemented using a combination of bolts and nuts, and its function is to prevent connector 901 from coming out of the connecting groove under stress through threaded locking.

[0063] The cross-sectional shape of the connecting groove can be T-shaped, dovetail-shaped, or rectangular, and the shape of the protruding part of the plug-in 901 matches it; the diameter of the screw connector 903 can be set to - mm, and the thread type can be ordinary triangular thread or fine thread; the materials of the connector 902 and the plug-in 901 can be medical-grade stainless steel or polycarbonate, and the surface is treated with anti-corrosion. The detachable feature of the connecting structure 9 allows the collection tank 101 and the water seal bottle 102 to be transported separately, and also facilitates the cleaning or replacement of individual components. The threaded fastening method of the screw connector 903 avoids the defects of traditional snap-fit ​​structures that are prone to loosening, ensuring the reliability of the drainage device connection during clinical use.

[0064] To make it easier for medical staff or patients to pick up the entire drainage device, the negative pressure pump 41 can also be connected to the water seal bottle 102, that is, the mounting plate 2 can be connected to the water seal bottle 102. A connection structure 9 similar to that between the liquid collection tank 101 and the water seal bottle 102 can be set between the mounting plate 2 and the water seal bottle 102. If a disposable water seal bottle 102 is used, it can be glued together with strong adhesive or double-sided tape, so that the negative pressure pump 41 can be disassembled and reused separately in the future.

[0065] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A fully automatic intelligent chest cavity negative pressure drainage device, characterized in that, include: The drainage device body includes a fluid collection tank and a water-sealed bottle. The fluid collection tank is mounted on one side in a first direction, and the fluid collection tank is used to store the drained fluid. The water-sealed bottle is used to observe the pressure difference between the pleural cavity and atmospheric pressure. The negative pressure regulating structure includes a negative pressure regulating pipe, a negative pressure pump, and a filter. One end of the negative pressure regulating pipe is connected to the water seal bottle, and the negative pressure pump is connected to the other end of the negative pressure regulating pipe. The negative pressure pump is used to regulate the negative pressure inside the water seal bottle, and the filter is installed on the negative pressure regulating pipe to filter liquid droplets in the gas drawn by the negative pressure pump.

2. The fully automatic intelligent chest cavity negative pressure drainage device as described in claim 1, characterized in that, The liquid collection tank is equipped with a drainage pipe, and the drainage pipe is equipped with a one-way valve. The one-way valve is used to prevent the liquid in the liquid collection tank from flowing back into the drainage pipe.

3. The fully automatic intelligent chest cavity negative pressure drainage device as described in claim 1, characterized in that, The negative pressure pump is provided with a mounting plate at the bottom, and a power supply device is installed on the mounting plate and is electrically connected to the negative pressure pump.

4. The fully automatic intelligent chest cavity negative pressure drainage device as described in claim 1, characterized in that, The liquid collection tank is equipped with a first detection device for detecting the liquid level in the liquid collection tank, and the water seal bottle is equipped with a second detection device for detecting the negative pressure in the water seal bottle.

5. The fully automatic intelligent chest cavity negative pressure drainage device as described in claim 4, characterized in that, A display device is installed on the top of the water-sealed bottle, and the display device is electrically connected to the first detection device and the second detection device.

6. The fully automatic intelligent chest cavity negative pressure drainage device as described in claim 4, characterized in that, An alarm device is installed on the negative pressure pump, and the alarm device is electrically connected to the display device to warn of excessively low or high negative pressure.

7. The fully automatic intelligent chest cavity negative pressure drainage device as described in claim 1, characterized in that, A pressure relief valve is installed on the outside of the water seal bottle to release negative pressure.

8. The fully automatic intelligent chest cavity negative pressure drainage device as described in claim 1, characterized in that, The water-sealed bottle is filled with physiological saline, and a conduit extending to the bottom of the bottle is provided inside the water-sealed bottle. The end of the conduit is lower than the surface of the physiological saline liquid, and the conduit is connected to the collection tank.

9. The fully automatic intelligent chest cavity negative pressure drainage device as described in claim 1, characterized in that, The liquid collection tank and the water seal bottle are provided with a connecting structure, which is used to detachably fix the liquid collection tank and the water seal bottle.

10. The fully automatic intelligent chest cavity negative pressure drainage device as described in claim 9, characterized in that, The connection structure includes: A connector is installed on the water seal bottle and has a connecting groove. A connector is installed in the liquid collection tank and inserted into the connecting groove; A screw-in connector, passing through the connector and the plug-in connector and fastened by threads, is used to prevent the plug-in connector from disengaging from the connecting groove.

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