Drainage device for the thoracic cavity

Abstract

This application provides a chest drainage device that adds a respiratory component to an existing chest drainage device and sets alternating drainage and breathing modes. In drainage mode, drainage can proceed normally using the existing drainage component. In breathing mode, drainage can be paused, and the newly added respiratory component measures pleural pressure during normal breathing. This process does not require additional punctures or interruption of drainage, thus ensuring high safety. Furthermore, the acquired respiratory pleural pressure data is continuous, reflecting the chest cavity recovery status throughout the drainage process, and is more accurate than discrete data. Therefore, the error in determining patient recovery is smaller. In short, the chest drainage device provided by this application can obtain highly accurate respiratory pleural pressure in a low-risk manner.

Description

Technical Field

[0001] This application relates to the field of medical technology, and in particular to a chest drainage device. Background Technology

[0002] Chest drainage is an important medical procedure used to remove gas and fluid from the pleural cavity to restore its normal physiological function. When treating patients with chest drainage devices, it's necessary to measure the pleural pressure post-treatment to assess the patient's recovery. If recovery is poor, further drainage may be required. However, current chest drainage devices only monitor drainage volume and leakage. Measuring pleural pressure after treatment requires interrupting drainage and performing a separate puncture. Interrupting drainage increases the risk of iatrogenic pneumothorax, while a separate puncture increases the risk of infection. Furthermore, the pleural pressure data obtained post-treatment is discrete, leading to significant errors in assessing recovery status.

[0003] Therefore, current methods for measuring pleural pressure present high-risk and low-accuracy technical problems and need to be improved. Summary of the Invention

[0004] This application provides a chest drainage device to alleviate the technical problems of high risk and low accuracy in current pleural pressure measurement.

[0005] This application provides a chest drainage device, including:

[0006] Drainage bottle;

[0007] The main unit is connected to the drainage bottle;

[0008] The drainage component has a first end for accessing the pleural cavity, a second end for connecting to the main unit, and a third end for connecting to the drainage bottle. In drainage mode, the main unit controls the drainage component to drain pleural fluid into the drainage bottle. In breathing mode, the main unit controls the drainage component to pause drainage. The drainage mode and the breathing mode alternate.

[0009] The breathing assembly has a first end for insertion into the chest cavity and a second end for connection to the main unit.

[0010] In the breathing mode, the host controls the breathing assembly to measure the respiratory pleural pressure.

[0011] In one embodiment, the breathing assembly includes a breathing pressure tubing and a breathing pressure sensor. The first inlet end of the breathing pressure tubing is connected to the pleural cavity, and the first outlet end of the breathing pressure tubing is connected to the breathing pressure sensor. The breathing pressure sensor is connected to the host computer. In the breathing mode, the host computer controls the breathing pressure sensor to measure the respiratory pleural pressure through the breathing pressure tubing.

[0012] In one embodiment, the drainage assembly includes a main drainage line, a drainage pressure line, a first drainage pressure sensor, a second drainage pressure sensor, and a negative pressure pump. The second inlet end of the main drainage line and the third inlet end of the drainage pressure line are interconnected for access to the pleural cavity. The second outlet end of the main drainage line, the first drainage pressure sensor, and the negative pressure pump are all connected to the drainage bottle. The third outlet end of the drainage pressure line is connected to the second drainage pressure sensor. The first drainage pressure sensor, the second drainage pressure sensor, and the negative pressure pump are all connected to the host unit. In the drainage mode, the host unit controls the negative pressure pump to operate at a set negative pressure to drain pleural fluid into the drainage bottle, and controls the first drainage pressure sensor to measure the pressure of the drainage bottle, and controls the second drainage pressure sensor to measure the drainage pleural pressure.

[0013] In one embodiment, the drainage pressure line is provided with a one-way valve, which opens when the current pleural pressure is negative and closes when the current pleural pressure is positive. The respiratory pressure line is not provided with the one-way valve.

[0014] In one embodiment, the second drainage pressure sensor is a negative pressure sensor, and the respiratory pressure sensor is a positive and negative pressure sensor.

[0015] In one embodiment, the thoracic drainage device further includes a hollow connector, the connector including three first interfaces and at least one second interface, the three first interfaces being connected to the first inlet end, the second inlet end and the third inlet end respectively, and the second interface being used to access the thoracic cavity.

[0016] In one embodiment, the drainage assembly further includes an isolating switch disposed on the drainage path of the main drainage line. In the drainage mode, the host controls the isolating switch to open, so that a passage is formed between the drainage bottle and the breathing pressure line. In the breathing mode, the host controls the isolating switch to close, so that a passage is not formed between the drainage bottle and the breathing pressure line.

[0017] In one embodiment, the isolating switch is a solenoid valve.

[0018] In one embodiment, the host includes a circuit board for controlling the alternation of the drainage mode and the breathing mode according to mode switching parameters.

[0019] In one embodiment, the respiratory pressure sensor, the first drainage pressure sensor, the second drainage pressure sensor, the negative pressure pump, and the disconnect switch are all electrically connected to the circuit board.

[0020] Beneficial effects: This application provides a chest drainage device, including a drainage bottle, a main unit, a drainage component, and a breathing component. The main unit is connected to the drainage bottle. The first end of the drainage component is used to access the chest cavity, and the second and third ends are connected to the main unit and the drainage bottle, respectively. In drainage mode, the main unit controls the drainage component to drain chest cavity fluid into the drainage bottle. In breathing mode, the main unit controls the drainage component to pause drainage. The drainage mode and breathing mode alternate. The first end of the breathing component is used to access the chest cavity, and the second end is connected to the main unit. In breathing mode, the main unit controls the breathing component to measure respiratory pleural pressure. This application adds a respiratory component to an existing chest drainage device and sets alternating drainage and breathing modes. In drainage mode, drainage can proceed normally using the existing component. In breathing mode, drainage can be paused, and the newly added respiratory component measures pleural pressure during normal breathing. This process does not require additional punctures or interruption of drainage, thus ensuring high safety. Furthermore, the acquired respiratory pleural pressure data is continuous, reflecting the chest cavity's recovery status throughout the drainage process, and is more accurate than discrete data. Therefore, the error in determining patient recovery is minimal. In short, the chest drainage device provided by this application can obtain highly accurate respiratory pleural pressure in a low-risk manner. Attached Figure Description

[0021] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0022] Figure 1 A three-dimensional structural diagram of the thoracic drainage device provided in the embodiments of this application.

[0023] Figure 2 This is a three-dimensional structural diagram of a chest drainage device in the prior art.

[0024] Figure 3 for Figure 1 A cross-sectional view at point A in the middle.

[0025] Explanation of reference numerals in the attached figures:

[0026] Drainage bottle 100; main unit 200; drainage assembly 300; breathing assembly 400; breathing pressure tubing 401; breathing pressure sensor 402; first connecting tube 21; second connecting tube 22; main drainage tube 301; drainage pressure tubing 302; first drainage pressure sensor 303; second drainage pressure sensor 304; negative pressure pump 305; one-way valve 306; second inlet end 31; second outlet end 32; third inlet end 33; third outlet end 34; first inlet end 41; first outlet end 42; connector 500; first interface 51; second interface 52; sampling port 53; isolating switch 307; switch base 308. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0032] like Figure 1 The diagram shown is a three-dimensional structural schematic of the chest drainage device provided in an embodiment of this application. The chest drainage device includes a drainage bottle 100, a main unit 200, a drainage component 300, and a breathing component 400. The main unit 200 is connected to the drainage bottle 100. The first end of the drainage component 300 is used to access the chest cavity, the second end is connected to the main unit 200, and the third end is connected to the drainage bottle 100. In drainage mode, the main unit 200 controls the drainage component 300 to drain chest cavity fluid into the drainage bottle 100. In breathing mode, the main unit 200 controls the drainage component 300 to pause drainage. The drainage mode and breathing mode alternate. The first end of the breathing component 400 is used to access the chest cavity, and the second end is connected to the main unit 200. In breathing mode, the main unit 200 controls the breathing component 400 to measure respiratory pleural pressure.

[0033] The host unit 200 has control functions and can control related hardware to execute relevant programs according to user input commands to complete the drainage of the pleural cavity and monitor various data during the drainage process until the patient's indicators return to normal and drainage is stopped. The drainage bottle 100 is assembled with the host unit 200 and is used to collect pleural fluid. The pleural drainage device has a drainage mode and a breathing mode. During the period from the start of drainage to the cessation of drainage, the drainage mode and the breathing mode are alternated multiple times. The drainage mode is used to manually provide power to drain the pleural fluid from the patient's pleural cavity, so that the patient's pleural function gradually recovers. The breathing mode is used to monitor the pleural pressure of the patient after a period of drainage treatment, without the aid of external power from the device, relying only on the patient's own breathing. For ease of representation, the pleural pressure in this state in the following embodiments of this application will be referred to as respiratory pleural pressure.

[0034] Specifically, in drainage mode, the main unit 200 can control the drainage component 300 and other related components to work together to drain pleural fluid, allowing the fluid to flow from the first end of the drainage component 300 to the third end, and finally into the drainage bottle 100. As drainage proceeds, the patient's pleural function gradually recovers. In respiratory mode, the main unit 200 can control the drainage component 300 and other related components to pause drainage, ensuring that the respiratory component 400 is not disturbed by the drainage component 300, while simultaneously controlling the respiratory component 400 to measure the patient's respiratory pleural pressure.

[0035] like Figure 2 The diagram shows a three-dimensional structural representation of a conventional chest drainage device. The existing chest drainage device includes a drainage bottle 100, a main unit 200, and a drainage assembly 300. The first end of the drainage assembly 300 is connected to the patient's chest cavity, and the second and third ends are connected to the main unit 200 and the drainage bottle 100, respectively. Since this chest drainage device only has a drainage mode, to determine the patient's chest recovery after a period of drainage, the drainage must be interrupted and a separate puncture performed. However, interrupting drainage increases the risk of iatrogenic pneumothorax, and a separate puncture increases the risk of infection. Furthermore, the pleural pressure obtained after treatment is discrete data, making it difficult to accurately determine the patient's recovery based on this data, resulting in a large margin of error.

[0036] In this embodiment, by adding a respiratory component 400 to the existing chest drainage device and setting alternating drainage and breathing modes, drainage can be performed normally using the existing drainage component 300 in drainage mode. In breathing mode, drainage can be paused, and the newly added respiratory component 400 can be used to measure pleural pressure under normal breathing. Since the first ends of both the drainage component 300 and the respiratory component 400 are connected to the patient's chest cavity, obtaining respiratory pleural pressure only requires switching modes throughout the entire process from device startup to shutdown, without requiring additional puncture operations or interrupting drainage, thus ensuring high safety. Furthermore, because the drainage and breathing modes alternate, the obtained respiratory pleural pressure is continuous data, reflecting the chest cavity recovery status throughout the drainage process. This is more accurate than discrete data, resulting in less error in determining whether the patient has recovered. In other words, the chest drainage device provided in this application can obtain highly accurate respiratory pleural pressure in a low-risk manner.

[0037] In one embodiment, the breathing assembly 400 includes a breathing pressure line 401 and a breathing pressure sensor 402. The first inlet end 41 of the breathing pressure line 401 is used to access the pleural cavity, and the first outlet end 42 of the breathing pressure line 401 is connected to the breathing pressure sensor 402. The breathing pressure sensor 402 is connected to the host 200. In the breathing mode, the host 200 controls the breathing pressure sensor 402 to measure the respiratory pleural pressure through the breathing pressure line 401.

[0038] Both the first inlet end 41 of the respiratory pressure tubing 401 and the first end of the drainage assembly 300 are connected to the pleural cavity. The first outlet end 42 can be connected to the respiratory pressure sensor 402 via the first connecting tube 21. The respiratory pressure sensor 402 is installed in the host unit 200 and electrically connected to the host unit 200. In respiratory mode, the host unit 200 controls the respiratory pressure sensor 402 to measure the respiratory pleural pressure through the respiratory pressure tubing 401. In drainage mode, the host unit 200 controls the respiratory pressure sensor 402 to pause measurement. Because the respiratory pressure tubing 401 leads directly to the pleural cavity, the respiratory pressure sensor 402 can measure a relatively accurate respiratory pleural pressure.

[0039] In one embodiment, the drainage assembly 300 includes a main drainage pipe 301, a drainage pressure pipe 302, a first drainage pressure sensor 303, a second drainage pressure sensor 304, and a negative pressure pump 305. The second inlet end 31 of the main drainage pipe 301 and the third inlet end 33 of the drainage pressure pipe 302 are interconnected for access to the pleural cavity. The second outlet end 32 of the main drainage pipe 301, the first drainage pressure sensor 303, and the negative pressure pump 305 are all connected to the drainage bottle 100. The third outlet end 34 of the force line 302 is connected to the second drainage pressure sensor 304. The first drainage pressure sensor 303, the second drainage pressure sensor 304 and the negative pressure pump 305 are all connected to the main unit 200. In the drainage mode, the main unit 200 controls the negative pressure pump 305 to operate at a set negative pressure so that the pleural fluid is drained into the drainage bottle 100. The main unit 200 controls the first drainage pressure sensor 303 to measure the pressure of the drainage bottle and controls the second drainage pressure sensor 304 to measure the drainage pleural pressure.

[0040] The first end of the drainage assembly 300 includes a second inlet end 31 of the main drainage pipe 301 and a third inlet end 33 of the drainage pressure pipe 302, which are interconnected and connected to the patient's pleural cavity. The second end of the drainage assembly 300 includes a third outlet end 34 of the drainage pressure pipe 302. A second drainage pressure sensor 304 is disposed in the host 200 and electrically connected to the host 200. The third outlet end 34 of the drainage pressure pipe 302 can be connected to the second drainage pressure sensor 304 through a second connecting pipe 22. The third end of the drainage assembly 300 includes the second outlet end 34 of the main drainage pipe 301. The second outlet end 34 of the main drainage pipe 301, the first drainage pressure sensor 303, and the negative pressure pump 305 are all connected to the drainage bottle 100 and electrically connected to the host 200. In drainage mode, the main unit 200 controls the negative pressure pump 305 to operate at a set negative pressure, so that the pressure inside the drainage bottle 100 is lower than the pleural cavity pressure. Pleural fluid flows into the drainage bottle 100 through the drainage main pipe 301 under this pressure difference. Simultaneously, the main unit 200 controls the first drainage pressure sensor 303 to measure the pressure in the drainage bottle, and the second drainage pressure sensor 304 measures the patient's pleural pressure during drainage through the drainage pressure tubing 302. For ease of representation, the pleural pressure in this state will be referred to as the drainage pleural pressure in the following embodiments. The drainage pleural pressure can be used to reflect whether the patient's pleural pressure has reached the aforementioned set negative pressure during drainage.

[0041] With the above structure, in drainage mode, both the pressure of the drainage bottle and the pressure of the drainage pleura can be monitored in real time to determine whether the patient's pressure during the drainage process meets expectations, and to provide a reference for calculating relevant pleural data such as leakage volume during the drainage process.

[0042] like Figure 3 As shown, Figure 1Please also refer to the cross-sectional diagram at point A. Figure 1 and Figure 3 In one embodiment, a one-way valve 306 is provided inside the drainage pressure line 302. When the current pleural pressure is negative, the one-way valve 306 is open, and when the current pleural pressure is positive, the one-way valve 306 is closed. No one-way valve 306 is provided inside the respiratory pressure line 401.

[0043] In existing chest drainage equipment, in addition to measuring the drainage pleural pressure, the drainage pressure line 302 also needs to be connected to the vent valve (not shown in the figure) inside the main unit 200. To ensure safety, a one-way valve 306 needs to be installed inside the drainage pressure line 302. In other words, the one-way valve 306 here is an indispensable component.

[0044] Normally, when the pleural pressure is negative, the one-way valve 306 is open. At this time, a passage is formed between the drainage pressure tubing 302, the main drainage tubing 301, and the pleural cavity. Because the pressure inside the drainage bottle 100 is lower than the pressure inside the drainage pressure tubing 302, pleural fluid will not enter the drainage pressure tubing 302 when the one-way valve 306 is open. The second drainage pressure sensor 304 can measure the patient's drainage pleural pressure through the drainage pressure tubing 302, and the measured drainage pleural pressure is always negative. However, if the pleural pressure is abnormally positive, the one-way valve 306 will close. At this time, a passage is not formed between the drainage pressure tubing 302 and the main drainage tubing 301. Fluid in the main drainage tubing 301 and the drainage bottle 100 will be blocked by the one-way valve 306 and cannot enter the drainage pressure tubing 302, thus ensuring the safety of the drainage pressure tubing 302 and its connected components. Therefore, with the above structure, the second drainage pressure sensor 304 can only measure negative pleural pressure, but cannot measure positive pleural pressure.

[0045] As can be seen from the above, due to the presence of the one-way valve 306, the original drainage pressure line 302 and the second drainage pressure sensor 304 in the equipment can only measure negative pressure. However, respiratory pleural pressure can be both positive and negative. If a breathing mode is added to the original equipment, the original drainage pressure line 302 and the second drainage pressure sensor 304 can only measure negative respiratory pleural pressure and cannot obtain positive respiratory pleural pressure. This will make the measured respiratory pleural pressure inaccurate and incomplete.

[0046] Therefore, in this embodiment, without modifying the original drainage component 300, by adding a respiratory pressure line 401 and a respiratory pressure sensor 402 to the existing chest drainage device, and without installing a one-way valve 306 inside the respiratory pressure line 401, the respiratory pressure sensor 402 can measure both positive and negative pleural pressure, thus obtaining accurate and complete respiratory pleural pressure data. Furthermore, since this solution does not require significant modifications to the existing chest drainage device structure, it is low-cost and highly practical.

[0047] In one embodiment, the second drainage pressure sensor 304 is a negative pressure sensor, and the respiratory pressure sensor 402 is a positive and negative pressure sensor. In the prior art, the second drainage pressure sensor 304 of a chest drainage device can only measure negative pressure, so its type is only a negative pressure sensor. However, the respiratory pressure sensor 402 in this embodiment needs to measure both positive and negative pressure, therefore its type needs to be set as a positive and negative pressure sensor to meet clinical needs.

[0048] In one embodiment, the chest drainage device further includes a hollow connector 500, which includes three first interfaces 51 and at least one second interface 52. The three first interfaces 51 are respectively connected to a second inlet end 31, a third inlet end 33 and a first inlet end 41, and the second interface 52 is used to access the chest cavity.

[0049] Because connector 500 is hollow, the three tubes can be connected inside connector 500 through three first ports 51, and then connected to the pleural cavity through the same second port 52. Connector 500 may or may not have a sampling port 53, depending on the specific needs. Since connector 500 can connect three tubes to the pleural cavity simultaneously through a single puncture point, no additional puncture point is needed when measuring respiratory pleural pressure, thus reducing the risk of infection and improving safety. It should be noted that... Figure 1 The structure of the connector 500 is only one schematic diagram. The connector 500 can also be other models. This application does not limit the model of the connector 500, as long as it can simultaneously connect three tubes to the thoracic cavity.

[0050] In one embodiment, the drainage assembly 300 further includes an isolating switch 307, which is disposed on the drainage path of the main drainage pipeline 301. In the drainage mode, the host 200 controls the isolating switch 307 to open so that a passage is formed between the drainage bottle 100 and the breathing pressure pipeline 401. In the breathing mode, the host 200 controls the isolating switch 307 to close so that a passage is not formed between the drainage bottle 100 and the breathing pressure pipeline 401.

[0051] Since both the main drainage line 301 and the respiratory pressure line 401 are connected to the pleural cavity, and the main drainage line 301 is also connected to the drainage bottle 100, a pathway is formed between the drainage bottle 100, the main drainage line 301, and the respiratory pressure line 401. In respiratory mode, although drainage assembly 300 pauses drainage, this pathway will interfere with the measurement of respiratory pleural pressure due to the gas inside the drainage bottle 100 and the main drainage line 301, leading to inaccurate measurement results.

[0052] In this embodiment, by setting an isolating switch 307 on the drainage path of the main drainage pipe 301, when entering the drainage mode, the isolating switch 307 is open, maintaining the aforementioned pathway and not affecting the normal drainage operation of the drainage component 300. When entering the breathing mode, the isolating switch 307 is closed, cutting off the aforementioned pathway and eliminating the aforementioned interference, making the respiratory pleural pressure measured by the respiratory pressure sensor 402 more accurate. Without affecting the normal drainage function, the isolating switch 307 can be positioned as close as possible to the second inlet end 31 of the main drainage pipe 301 to minimize the impact of the main drainage pipe 301 on the respiratory pleural pressure.

[0053] In one embodiment, the disconnect switch 307 is a solenoid valve. The disconnect switch 307 is installed on the drainage path of the main drainage pipeline 301 via a switch base 308. The solenoid valve can receive electrical signals from the host 200 and automatically realize the function of opening and closing without manual opening and closing.

[0054] In one embodiment, the host includes a circuit board for controlling the alternation of drainage mode and breathing mode according to mode switching parameters. The mode switching parameters include the entry order and duration of each mode, which need to be preset and stored in the host 200. The default entry order is drainage mode followed by breathing mode, with subsequent alternations between the two modes. The duration of each mode is set as needed, typically longer for drainage mode than breathing mode; for example, the first duration of drainage mode is 5 minutes, and the second duration of breathing mode is 30 seconds. This ensures drainage efficiency while obtaining sufficient respiratory and pleural pressure data for reference. After the chest drainage device starts operating, the circuit board of the host 200 first acquires the mode switching parameters, then determines the first mode to enter (drainage mode, lasting a first duration) and the next mode to enter (breathing mode, lasting a second duration). After determining this information, the host controls the chest drainage device to alternate between drainage and breathing modes.

[0055] Using the above method, after setting the mode switching parameters, the circuit board can control the chest drainage device to automatically complete each mode entry and mode switching operation. The two modes can switch automatically and orderly without manual intervention, which is highly efficient.

[0056] In one embodiment, the respiratory pressure sensor 402, the first drainage pressure sensor 303, the second drainage pressure sensor 304, the negative pressure pump 305, and the isolating switch 307 are all electrically connected to the circuit board. The host 200 provides control signals to each component through the circuit board, enabling each component to automatically work or pause work in the corresponding mode without manual intervention, thus achieving high efficiency.

[0057] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0058] The above provides a detailed description of a chest drainage device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A chest drainage apparatus, characterized in that, The chest drainage device comprises: a drainage bottle; a host connected with the drainage bottle; a drainage assembly, a first end of which is used for accessing the chest cavity, a second end of which is connected with the host, and a third end of which is connected with the drainage bottle, in a drainage mode, the host controls the drainage assembly to drain the chest cavity liquid into the drainage bottle, in a breathing mode, the host controls the drainage assembly to suspend the drainage, and the drainage mode and the breathing mode are alternated; a breathing assembly, a first end of which is used for accessing the chest cavity, and a second end of which is connected with the host, in the breathing mode, the host controls the breathing assembly to measure the respiratory pleural pressure; wherein the breathing assembly comprises a breathing pressure pipeline and a breathing pressure sensor, a first inlet end of the breathing pressure pipeline is used for accessing the chest cavity, a first outlet end of the breathing pressure pipeline is connected with the breathing pressure sensor, and the breathing pressure sensor is connected with the host; in the breathing mode, the host controls the breathing pressure sensor to measure the respiratory pleural pressure through the breathing pressure pipeline; the drainage assembly comprises a drainage main pipeline, a drainage pressure pipeline, a first drainage pressure sensor, a second drainage pressure sensor and a negative pressure pump, a second inlet end of the drainage main pipeline and a third inlet end of the drainage pressure pipeline are mutually penetrated and used for accessing the chest cavity, a second outlet end of the drainage main pipeline, the first drainage pressure sensor and the negative pressure pump are all connected with the drainage bottle, a third outlet end of the drainage pressure pipeline is connected with the second drainage pressure sensor, and the first drainage pressure sensor, the second drainage pressure sensor and the negative pressure pump are all connected with the host; in the drainage mode, the host controls the negative pressure pump to operate at a set negative pressure, so as to make the chest cavity liquid drain into the drainage bottle, controls the first drainage pressure sensor to measure the drainage bottle pressure, and controls the second drainage pressure sensor to measure the drainage pleural pressure; the chest drainage device further comprises a hollow connector, the connector comprises three first interfaces and at least one second interface, the three first interfaces are respectively connected with the first inlet end, the second inlet end and the third inlet end, and the second interface is used for accessing the chest cavity.

2. The chest drainage apparatus of claim 1, wherein, a one-way valve is arranged inside the drainage pressure pipeline, the one-way valve is opened when the current pleural pressure is negative pressure, and the one-way valve is closed when the current pleural pressure is positive pressure, and the breathing pressure pipeline is not provided with the one-way valve.

3. The chest drainage apparatus of claim 2, wherein, the second drainage pressure sensor is a negative pressure sensor, and the breathing pressure sensor is a positive and negative pressure sensor.

4. The chest drainage apparatus of claim 2, wherein, the drainage assembly further comprises an isolation switch, the isolation switch is arranged on a drainage path of the drainage main pipeline, in the drainage mode, the host controls the isolation switch to be opened, so as to form a passage between the drainage bottle and the breathing pressure pipeline, and in the breathing mode, the host controls the isolation switch to be closed, so as to not form a passage between the drainage bottle and the breathing pressure pipeline.

5. The chest drainage apparatus of claim 4, wherein, the isolation switch is an electromagnetic valve.

6. The chest drainage apparatus of claim 4, wherein, The host comprises a circuit board, which is used for controlling the drainage mode and the breathing mode to alternate according to a mode switching parameter.

7. The chest drainage apparatus of claim 6, wherein, The breathing pressure sensor, the first drainage pressure sensor, the second drainage pressure sensor, the negative pressure pump and the isolation switch are electrically connected with the circuit board.

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