A liquid-air chest suction device and its application control method

Abstract

This application discloses a pneumothorax suction device and its application control method, including an air suction tube, a liquid suction tube, a first negative pressure component, and a second negative pressure component, as well as a sealing component. The air suction tube is slidably connected to the sealing component. The air inlet of the air suction tube has an air inlet and a micro-inflatable bag is fixedly connected thereto. The air outlet of the air suction tube is connected to the first negative pressure component. The liquid inlet of the liquid suction tube has a liquid suction inlet, and the liquid outlet is connected to the second negative pressure component. The liquid suction tube is parallel to the air suction tube and is fitted with a counterweight tube, which is slidably connected to the sealing component. This application can improve the problem of inaccurate drainage in existing single-tube drainage methods.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a pneumothorax suction device and its application control method. Background Technology

[0002] Pneumothorax, also known as hydrothorax, refers to the simultaneous accumulation of fluid and air in the pleural cavity. Clinically, treatment for pneumothorax involves closed chest drainage to remove both fluid and air. During clinical practice, the amount of fluid and air removed must be carefully controlled to prevent complications such as lung re-expansion edema, mediastinal shift, and cardiovascular complications. However, current clinical treatment methods typically involve inserting a suction tube (as described in Chinese invention patent application number CN201420801375.3) into the pleural cavity for drainage, which cannot guarantee the accuracy of the drainage. Summary of the Invention

[0003] The main objective of this application is to provide a pneumothorax suction device and its application control method to improve the problem of inaccurate drainage in existing single-tube drainage methods.

[0004] To achieve the above objectives, this application provides the following technology: a pneumothorax suction device, comprising an air suction tube, a liquid suction tube, a first negative pressure component, and a second negative pressure component, and further comprising a sealing component. The air suction tube is slidably connected to the sealing component. The air inlet end of the air suction tube has an air inlet and is fixedly connected to a micro airbag. The air outlet end of the air suction tube is connected to the first negative pressure component. The liquid inlet end of the liquid suction tube has a liquid suction inlet and the liquid outlet end is connected to the second negative pressure component. The liquid suction tube is parallel to the air suction tube and is fitted with a counterweight tube. The counterweight tube is slidably connected to the sealing component.

[0005] Furthermore, the air inlet is opened through the radial sidewall of the air inlet tube, and the micro airbag has an air inlet connected to the air inlet along the radial direction of the air inlet tube.

[0006] Furthermore, the micro-airbag covers the axial end side of the air inlet end of the inhalation tube.

[0007] Furthermore, the suction port is opened through the radial sidewall of the suction tube, and a blocking plate is fixedly connected to the axial end of the suction tube inlet. The counterweight tube abuts against the blocking plate and can form a seal on the suction port.

[0008] Furthermore, an ear plate is fixedly connected to the end of the counterweight tube away from the blocking plate, and the ear plate is threadedly connected to a screw that abuts against the sealing assembly.

[0009] Furthermore, a buffer layer is fixedly connected to the side of the plug plate opposite to the suction tube.

[0010] Furthermore, the sealing assembly includes a sealing block, an inner airbag, and an outer airbag. The inner airbag and the outer airbag are spaced apart and both are connected to the outside of the sealing block. The inner airbag is closer to the air inlet end of the inhalation tube than the outer airbag.

[0011] Furthermore, it also includes an inflation / deflation assembly, which includes a four-way valve, three flexible hoses, and three rigid pipes. The inlet end of the four-way valve is used to connect to the air compressor. One end of each of the three flexible hoses is connected to one of the three outlet ends of the four-way valve, and the other end is connected to one end of each of the rigid pipes. The other end of one of the rigid pipes is connected to the micro airbag, and the other two rigid pipes are connected to the inner airbag and the outer airbag, respectively.

[0012] Furthermore, the external airbag is fixedly connected to a fixing ring, which is threadedly connected to the sealing block.

[0013] Furthermore, the outer surface of the sealing block has an arc-shaped structure.

[0014] On the other hand, this application provides an application control method for a pneumothorax suction device, comprising the following steps:

[0015] S1. During treatment, the sealing component is installed on the incision to seal it;

[0016] S2. The first negative pressure component creates negative pressure on the suction tube, gradually drawing gas out from the suction port.

[0017] S3. The second negative pressure component creates negative pressure on the suction tube, gradually drawing the liquid out from the suction port until the gas and liquid are completely removed.

[0018] Compared with the prior art, this application can bring the following technical effects: the suction tube and the liquid suction tube of the present invention are in a separate state, and negative pressure can be formed by the first negative pressure component and the second negative pressure component respectively, thereby controlling the suction tube and the liquid suction tube respectively, thereby improving the problem of inaccurate drainage in the existing single tube drainage method. In addition, throughout the process, the micro airbag floats on the gas, which can prevent liquid from entering the suction tube, and the liquid suction port is buried in the liquid, which can prevent gas from entering the liquid suction tube. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is the invention Figure 1 The structural diagram of the left side;

[0022] Figure 3 This is the invention Figure 2 A magnified view of a portion of the image;

[0023] Figure 4 This is the invention Figure 3 A magnified view of a portion of the image;

[0024] Figure 5 This is the invention Figure 1 The structural diagram of the right side;

[0025] Figure 6 This is the invention Figure 5 A magnified view of a portion of the image;

[0026] Figure 7 This is a flowchart of the application steps of the present invention.

[0027] In the diagram: 1. Sealing assembly; 11. Sealing block; 12. Inner airbag; 13. Outer airbag; 131. Fixing ring; 2. Inhalation tube; 21. Inhalation port; 22. Miniature airbag; 221. Air inlet; 23. Embedded groove; 24. Limiting nut; 3. First negative pressure assembly; 31. Air guide tube; 311. Pressure gauge; 312. First control valve; 32. First negative pressure regulating bottle; 321. Air transfer chamber; 322. First negative pressure regulating chamber. 323. Adaptor pipe; 33. First negative pressure connection pipe; 4. Suction pipe; 41. Suction port; 42. Counterweight pipe; 421. Ear plate; 422. Screw; 43. Blocking plate; 44. Buffer layer; 5. Second negative pressure assembly; 51. Liquid guide pipe; 511. Flow meter; 512. One-way valve; 52. Second negative pressure regulating bottle; 53. Second negative pressure connection pipe; 6. Gas filling and releasing assembly; 61. Four-way valve; 62. Flexible hose; 63. Rigid pipe. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] In addition, the term "multiple" should mean two or more.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] like Figures 1-6 A pneumothorax suction device includes an air inlet tube 2, a liquid inlet tube 4, a first negative pressure component 3, and a second negative pressure component 5, and also includes a sealing component 1. The air inlet tube 2 is slidably connected to the sealing component 1. The air inlet end of the air inlet tube 2 has an air inlet 21 and is fixedly connected to a micro airbag 22. The air outlet end of the air inlet tube 2 is connected to the first negative pressure component 3. The liquid inlet end of the liquid inlet tube 4 has a liquid inlet 41 and the liquid outlet end is connected to the second negative pressure component 5. The liquid inlet tube 4 is parallel to the air inlet tube 2 and is fitted with a counterweight tube 42. The counterweight tube 42 is slidably connected to the sealing component 1.

[0035] During treatment, the sealing component 1 is installed at the incision to seal it. At this time, the air inlet of the inhalation tube 2 and the air inlet of the suction tube 4 are both located inside the pleural cavity. The inhalation tube 2 floats at the top of the pleural cavity due to the buoyancy of the gas in its micro-inflator 22, while the suction tube 4 slides down to the bottom of the pleural cavity under the gravity of its counterweight tube 42 and enters the fluid in the pleural cavity. When suction treatment is performed, the first negative pressure component 3 creates negative pressure on the inhalation tube 2, gradually drawing gas out from the inhalation port 21. As the gas descends, the inhalation tube 2 slides relative to the sealing component 1, and the micro-inflator 22 always floats above the gas inhalation tube. On the body surface, the second negative pressure component 5 creates negative pressure on the suction tube 4, gradually drawing the liquid out from the suction port 41 until the gas and liquid are completely drawn out. During the entire operation, the suction tube 2 and the suction tube 4 are in a separate state, and negative pressure can be formed by the first negative pressure component 3 and the second negative pressure component 5 respectively, controlling the suction tube 2 and the suction tube 4 respectively, thereby improving the problem of inaccurate drainage in the existing single-tube drainage method. In addition, during the entire process, the micro airbag 22 floats on the gas, which can prevent the liquid from entering the suction tube 2, and the suction port 41 is buried in the liquid, which can prevent the gas from entering the suction tube 4.

[0036] Among them, the micro-airbag 22 can be made of biocompatible silicone, with an inflation volume of 0.5-1mL, a diameter of about 1cm, and a density of <0.5g / cm³ after inflation. 3 It automatically floats to the top of the chest cavity using buoyancy.

[0037] The first negative pressure assembly 3 includes an air inlet pipe 31 connected to the air outlet of the suction pipe 2 and a first negative pressure regulating bottle 32 connected to the air outlet of the air inlet pipe 31. A partition is provided in the middle of the first negative pressure regulating bottle 32, dividing it into a gas conversion chamber 321 and a first negative pressure adjustment chamber 322. The gas conversion chamber 321 and the first negative pressure adjustment chamber 322 are connected by a transfer pipe 323. The first negative pressure adjustment chamber 322 is also connected to a negative pressure device (such as an electric pump) via a first negative pressure connecting pipe 33. A liquid (such as water) is provided in the first negative pressure adjustment chamber 322, and one end of the transfer pipe 323 extends below the liquid surface. The air inlet pipe 31 extends into the gas conversion chamber 321.

[0038] Initial state and gas entry: When it is necessary to expel gas from the pleural cavity during surgery, the gas in the pleural cavity flows out through the suction tube 2. Since the suction tube 2 is connected to the pleural cavity, the gas in the pleural cavity will flow into the suction tube 2 under the action of pressure difference, and then enter the air guide tube 31 of the first negative pressure component 3. The air inlet end of the air guide tube 31 is connected to the air outlet end of the suction tube 2, thus ensuring that the gas can smoothly enter the first negative pressure component 3.

[0039] Gas flow in the gas transfer chamber: Gas entering the gas guide tube 31 is discharged from its outlet and enters the gas transfer chamber 321. The gas transfer chamber 321 is a space formed by a partition separating the first negative pressure regulating bottle 32, where gas temporarily stays and transitions.

[0040] Gas enters the first negative pressure regulating chamber through a transfer pipe: the gas transfer chamber 321 and the first negative pressure regulating chamber 322 are connected by a transfer pipe 323, one end of which extends below the liquid surface in the first negative pressure regulating chamber 322. When the gas pressure in the gas transfer chamber 321 reaches a certain level, the gas will enter the first negative pressure regulating chamber 322 through the transfer pipe 323. Since one end of the transfer pipe 323 is below the liquid surface, the gas will pass through the liquid in the form of bubbles when it enters. This can filter and buffer the gas to a certain extent, preventing the gas from directly and rapidly impacting the negative pressure equipment, and can also initially separate some impurities or small liquid particles from the gas.

[0041] Connection between the first negative pressure regulating chamber and the negative pressure device, and gas discharge: The first negative pressure regulating chamber 322 is connected to the negative pressure device (such as an electric pump) via the first negative pressure connecting pipe 33. When the negative pressure device is working, a negative pressure environment is formed in the first negative pressure regulating chamber 322. Under the action of negative pressure, the gas entering the first negative pressure regulating chamber 322 through the transfer pipe 323 is continuously drawn in and discharged by the negative pressure device through the first negative pressure connecting pipe 33. At the same time, since there is liquid in the first negative pressure regulating chamber 322, the liquid can also play a certain sealing role during the gas discharge process, preventing outside air from flowing back into the system, ensuring the stability of the negative pressure state of the system, so that the gas in the pleural cavity can be continuously and stably discharged from the body through the inhalation tube 2 and the first negative pressure component 3, achieving the purpose of treating pneumothorax.

[0042] The air tube 31 is equipped with a pressure gauge 311 and a first control valve 312. The pressure gauge 311 allows for real-time monitoring of the air pressure within the air tube 31, facilitating understanding of intrathoracic pressure changes, aiding in assessing the progression of pneumothorax, timely detection of abnormalities, and ensuring surgical safety and effectiveness. The first control valve 312 controls the flow of gas within the air tube 31, opening and closing the tube, and adjusting the gas flow rate. It allows for flexible adjustment of the exhaust speed according to the needs of different stages of surgery, and also regulates the negative pressure system to adapt to the gas discharge situation within the thoracic cavity.

[0043] The second negative pressure assembly 5 includes a liquid guide tube 51 and a second negative pressure regulating bottle 52. The inlet end of the liquid guide tube 51 is connected to the outlet end of the suction tube 4, and the outlet end extends below the liquid level stored in the second negative pressure regulating bottle 52. A second negative pressure connecting pipe 53 is also vertically connected to the opening of the second negative pressure regulating bottle 52, and the second negative pressure connecting pipe 53 is connected to a negative pressure device (such as an electric pump). A flow meter 511 and a one-way valve 512 are also installed on the liquid guide tube 51.

[0044] The inlet end of the liquid guide tube 51 is connected to the outlet end of the suction tube 4. After the suction tube 4 draws liquid from the pleural cavity, the liquid is transported to the second negative pressure regulating bottle 52 through the liquid guide tube 51. The outlet end of the liquid guide tube 51 extends below the liquid surface stored in the second negative pressure regulating bottle 52. The liquid in the second negative pressure regulating bottle 52 can buffer and stabilize the incoming liquid, preventing the liquid from directly impacting the bottle wall or causing large fluctuations. It can also prevent gas from entering the negative pressure equipment to a certain extent. The second negative pressure regulating bottle 52, as a container for storing liquid, can temporarily store the liquid drawn from the pleural cavity, facilitating subsequent processing and observation. The second negative pressure connecting tube 53 is vertically connected to the bottle opening of the second negative pressure regulating bottle 52 and connected to the negative pressure equipment. When the negative pressure equipment is working, a negative pressure environment is formed inside the second negative pressure regulating bottle 52. This negative pressure environment is the driving force that propels the liquid from the pleural cavity through the suction tube 4 and the liquid guide tube 51 into the second negative pressure regulating bottle 52, ensuring that the liquid can be continuously and stably drawn out.

[0045] A flow meter 511 is installed on the drainage tube 51 to measure the flow rate of fluid passing through the tube 51 in real time. Doctors can use the flow meter readings to understand the rate and total amount of fluid being aspirated from the pleural cavity, helping to assess the extent of pleural effusion and adjust treatment plans accordingly. A one-way valve 512 prevents backflow of fluid within the drainage tube 51.

[0046] As parallel solutions to the above schemes, both the first negative pressure component 3 and the second negative pressure component 5 can use traditional closed chest drainage bottles for drainage.

[0047] like Figures 1-4 The air inlet 21 is opened through the radial side wall of the air inlet tube 2, and the micro airbag 22 is provided with an air inlet 221 that communicates with the air inlet 21 along the radial direction of the air inlet tube 2.

[0048] During the inhalation process, the air inlet 221 opens to the side and connects to the air inlet 21, forming a lateral air intake path, which can ensure that the gas enters the air intake tube 2 smoothly.

[0049] like Figures 3-4 The micro-airbag 22 covers the axial end of the inhalation tube 2. In extreme cases, even if the inhalation tube 2 comes into contact with intrathoracic fluid, the micro-airbag 22 will be in contact with the fluid, and the fluid will be prevented from entering the inhalation tube 2 due to the lateral opening of the inhalation port 221.

[0050] Based on the above embodiment, a first receiving groove is provided on the side wall of the inhalation tube 2 to fix the micro airbag 22, and the micro airbag 22 can retract into the first receiving groove when it deflates.

[0051] like Figures 5-6 The suction port 41 is opened through the radial side wall of the suction tube 4, and a blockage plate 43 is fixedly connected to the axial end of the suction tube 4. The counterweight tube 42 abuts against the blockage plate 43 and can form a seal on the suction port 41.

[0052] When the suction tube 4 is inserted into the pleural cavity and passes through the gas layer and enters the liquid layer, the counterweight tube 42 abuts against the blocking plate 43 and forms a seal on the suction port 41 to prevent gas from entering the suction port 41. When the suction port 41 enters the liquid layer under the action of the counterweight tube 42, a force is applied to the counterweight tube 42 to make it slide relative to the suction tube 4, thereby opening the suction port 41.

[0053] The counterweight tube 42 can be made of medical-grade stainless steel, weighing approximately 2-3g, with a density >1.2g / cm³. 3 Gravity is used to guide the suction tube 4 down to the bottom of the pleural cavity.

[0054] like Figures 5-6 The end of the counterweight tube 42 away from the blocking plate 43 is fixedly connected to an ear plate 421, and the ear plate 421 is threadedly connected to a screw 422 that abuts against the sealing assembly 1.

[0055] After the counterweight tube 42 slides relative to the suction tube 4 and the suction port 41 is opened, a force can be applied to the screw 422, causing the screw 422 to rotate and abut against the sealing assembly 1, so as to lift the counterweight tube 42, keep the suction port 41 open, and allow the liquid to continuously enter the suction tube 4.

[0056] like Figures 5-6 A buffer layer 44 is fixedly connected to the side of the blocking plate 43 away from the suction tube 4.

[0057] When the counterweight tube 42 and the suction tube 4 move to the bottom of the thoracic cavity simultaneously under the gravity of the counterweight tube 42, the buffer layer 44 comes into contact with the bottom of the thoracic cavity to form a buffer effect, so as to prevent damage to human tissues, such as lung lobes.

[0058] The buffer layer 44 can be made of medical rubber or medical silicone to avoid scratching the pleura or lung tissue.

[0059] like Figures 1-6 The sealing assembly 1 includes a sealing block 11, an inner airbag 12 and an outer airbag 13. The inner airbag 12 and the outer airbag 13 are spaced apart and are both connected to the outside of the sealing block 11. The inner airbag 12 is closer to the air inlet end of the air inlet tube 2 than the outer airbag 13.

[0060] When the sealing component 1 is installed on the incision to seal the incision, the sealing block 11 abuts against the side of the incision, the inner airbag 12 abuts against the inside of the incision, and the outer airbag 13 abuts against the outside of the incision, forming an inner and outer seal to prevent outside air from entering the chest cavity through the incision under the negative pressure of the chest cavity.

[0061] The sealing block 11 can be made of materials such as medical rubber or medical silicone.

[0062] like Figures 1-6 The pneumothorax suction device of the present invention further includes an inflation / deflation assembly 6, which includes a four-way valve 61, three flexible hoses 62 and three rigid tubes 63. The air inlet of the four-way valve 61 is used to connect to an air compressor. One end of each of the three flexible hoses 62 is connected to the three air outlets of the four-way valve 61, and the other end is connected to one end of each rigid tube 63. The other end of one rigid tube 63 is connected to a micro airbag 22, and the other ends of the other two rigid tubes 63 are connected to an inner airbag 12 and an outer airbag 13, respectively.

[0063] When the sealing assembly 1 is installed on the cut to seal the cut, the inner airbag 12, the outer airbag 13 and the miniature airbag 22 are inflated sequentially by the air compressor and the four-way valve 61 to achieve the sealing of the cut.

[0064] As a specific embodiment of the present invention, an embedding groove 23 is provided on the side wall of the inhalation tube 2. The embedding groove 23 is an arc-shaped groove and is adapted to one of the rigid tubes 63 to install one of the rigid tubes 63, so that when the inhalation tube 2 slides, it can drive one of the rigid tubes 63 to slide at the same time.

[0065] The rigid tube 63 connected to the inner airbag 12 has an "L" shape and is embedded in the sealing block 11.

[0066] Based on the above embodiment, the inhalation tube 2 is threadedly connected to a limiting nut 24 so that when the inhalation tube 2 slides inward to the top of the thoracic cavity and the required gas output has been achieved, the position of the inhalation tube 2 can be limited by tightening the limiting nut 24 so that the limiting nut 24 abuts against the sealing block 11.

[0067] like Figures 1-3 The outer airbag 13 is fixedly connected to a retaining ring 131, which is threaded to the sealing block 11. This allows the distance between the inner airbag 12 and the outer airbag 13 to be adjusted by rotation, ensuring a smooth seal of the incision.

[0068] Specifically, an annular groove is provided on the outer side of the sealing block 11 to facilitate threaded installation of the fixing ring 131. During the installation of the sealing block 11, the mating hose 62 and rigid tube 63 can be separated first, installed in place, and then connected together. In actual use, the inner airbag 12 can be inflated first, followed by the outer airbag 13 to seal the cut, and then the micro airbag 22 can be inflated.

[0069] Based on the above embodiment, a second receiving groove is provided on the side wall of the sealing block 11 for the installation of the inner airbag 12 and the outer airbag 13, so that when the inner airbag 12 and the outer airbag 13 are deflated, they can retract into the corresponding second receiving groove.

[0070] like Figures 1-3 The outer surface of the sealing block 11 is an arc-shaped structure. This allows for surface contact with the cut through the arc-shaped structure, reducing irritation to the cut.

[0071] like Figure 7 As shown, an application control method for a pneumothorax suction device includes the following steps:

[0072] S1. During treatment, the sealing component 1 is installed on the incision to seal the incision;

[0073] S2. The first negative pressure component 3 creates a negative pressure on the suction pipe 2, gradually drawing the gas out from the suction port 21.

[0074] S3. The second negative pressure component 5 creates a negative pressure on the suction tube 4, gradually drawing the liquid out from the suction port 41 until the gas and liquid are completely drawn out.

[0075] For a detailed understanding of the specific implementation and principles of each of the above steps, please refer to the description of the device described above.

[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pneumothorax suction device, comprising an air suction tube (2), a liquid suction tube (4), a first negative pressure assembly (3), and a second negative pressure assembly (5), characterized in that, It also includes a sealing assembly (1), the suction tube (2) is slidably connected to the sealing assembly (1), the air inlet end of the suction tube (2) is provided with a suction port (21) and is fixedly connected with a micro airbag (22), the air outlet end of the suction tube (2) is connected to the first negative pressure assembly (3), the liquid inlet end of the liquid suction tube (4) is provided with a liquid suction port (41) and the liquid outlet end is connected to the second negative pressure assembly (5), the liquid suction tube (4) is parallel to the suction tube (2) and is fitted with a counterweight tube (42), the counterweight tube (42) is slidably connected to the sealing assembly (1); The suction port (41) is opened through the radial side wall of the suction tube (4), and a blockage plate (43) is fixedly connected to the axial end of the suction tube (4). The counterweight tube (42) abuts against the blockage plate (43) and can form a seal on the suction port (41). The end of the counterweight tube (42) away from the blocking plate (43) is fixedly connected to an ear plate (421), and the ear plate (421) is threadedly connected to a screw (422) that abuts against the sealing assembly (1). A buffer layer (44) is fixedly connected to the side of the plug (43) away from the suction tube (4).

2. The pneumothorax suction device as described in claim 1, characterized in that, The air inlet (21) is opened through the radial side wall of the air inlet tube (2), and the micro airbag (22) is provided with an air inlet (221) communicating with the air inlet (21) along the radial direction of the air inlet tube (2).

3. The pneumothorax suction device as described in claim 2, characterized in that, The micro airbag (22) covers the axial end of the air intake end of the air inlet tube (2).

4. The pneumothorax suction device as described in claim 1, characterized in that, The sealing assembly (1) includes a sealing block (11), an inner airbag (12) and an outer airbag (13). The inner airbag (12) and the outer airbag (13) are spaced apart and connected to the outside of the sealing block (11). The inner airbag (12) is closer to the air inlet end of the inhalation tube (2) than the outer airbag (13).

5. The pneumothorax suction device as described in claim 4, characterized in that, It also includes an inflation / deflation assembly (6), which includes a four-way valve (61), three hoses (62) and three rigid pipes (63). The inlet end of the four-way valve (61) is used to connect to the air compressor. One end of each of the three hoses (62) is connected to the three outlet ends of the four-way valve (61), and the other end is connected to one end of each of the rigid pipes (63). The other end of one of the rigid pipes (63) is connected to the micro airbag (22), and the other ends of the other two rigid pipes (63) are connected to the inner airbag (12) and the outer airbag (13) respectively.

6. The pneumothorax suction device as described in claim 5, characterized in that, The external airbag (13) is fixedly connected to a fixing ring (131), which is threaded to the sealing block (11). The outer surface of the sealing block (11) is an arc surface structure.

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