Portable waterless dry-sealing chest drainage device capable of observing air leakage

Abstract

The utility model relates to a portable waterless dry-seal chest drainage device capable of observing air leakage, which comprises a bottle body, a sampling joint, a drainage joint and a suction joint, the suction joint is communicated with an inner cavity to form an exhaust passage, and a one-way ventilation dry-seal valve is arranged in the exhaust passage; the upper end of the dry sealing valve is connected with a transparent observation tube, the transparent observation tube is communicated with the suction joint and the dry sealing valve, a floating ball is arranged in the transparent observation tube, and the floating ball is configured to block the transparent observation tube without external force; one side wall of the bottle body is a transparent wall which can expose the states of the transparent observation tube and the floating ball in the transparent observation tube; the bottle body is further provided with a pressure release valve and a negative pressure valve used for adjusting or maintaining the negative pressure value in the inner cavity. According to the portable waterless dry-seal chest drainage device capable of observing air leakage, the dry-seal valve is combined with the transparent observation tube capable of observing air leakage, so that multiple functions that water seal liquid is not needed, water seal failure is avoided, and the state of the device is monitored in real time are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical suction instruments, in particular to a portable waterless dry-sealed chest drainage device capable of observing air leakage. Background Art

[0002] In the existing technology, closed chest drainage is an indispensable and important part of the treatment of thoracic surgery and diseases such as chest trauma. Its main function is to discharge air, fluid and blood accumulated in the chest cavity, restore negative pressure in the chest cavity, promote lung re-expansion, prevent and treat infection, and accelerate patient recovery.

[0003] Traditional closed chest drainage devices rely primarily on water-sealed bottles for drainage. The principle is that the water column in the water-sealed bottle forms a one-way valve, allowing gas and fluid in the chest cavity to escape while preventing outside air from entering. However, the water-sealed bottle must be filled with water-sealing fluid before use. If the drainage bottle is tipped over, the water seal fails, allowing outside air to pass directly into the patient's chest cavity, causing discomfort at best and the risk of pneumothorax at worst. The device is also complex to operate, limiting clinical use and making it inconvenient and inefficient.

[0004] To overcome the shortcomings of water-seal bottles, some dry chest drainage devices have been developed in recent years. These devices utilize mechanical one-way valves or membrane valves in place of water-seal fluid, thus avoiding the risk of water-seal failure. However, existing dry drainage devices also have some shortcomings. For example, existing devices typically only utilize a dry-seal valve to achieve one-way exhaust during gas-liquid drainage, preventing outside air from entering the chest cavity and causing pneumothorax. They lack the ability to monitor air leaks in real time and cannot intuitively indicate the device's tightness and patency. This makes it difficult for medical staff to accurately determine the device's tightness and patency, as well as whether the patient's chest cavity is leaking, increasing potential safety risks.

[0005] In summary, the existing waterless dry-seal chest drainage devices still need to be improved in terms of functionality, cost, and ease of use to better meet clinical needs. Summary of the Invention

[0006] In order to solve the above problems, the utility model provides a portable waterless dry-seal chest drainage device with observable air leakage, which can directly observe the position change of the float through the observation window to judge the airtightness and patency of the device, thereby knowing whether the patient's chest cavity is leaking.

[0007] In order to achieve the above-mentioned purpose, the utility model is a portable waterless dry-sealed chest drainage device with observable air leakage, comprising a bottle body with an inner cavity, a sampling joint provided at the bottom of the bottle body and connected to the inner cavity, and a drainage joint and a suction joint provided at the top of the bottle body and connected to the inner cavity, the suction joint being connected to the inner cavity to form an exhaust channel, and a one-way ventilated dry-sealed valve being provided in the exhaust channel; a transparent observation tube being connected to the upper end of the dry-sealed valve, the transparent observation tube being connected to the suction joint and the dry-sealed valve, a float being provided in the transparent observation tube, and the float being configured to block the transparent observation tube in the absence of external force; one side wall of the bottle body is a transparent wall, and the transparent wall can reveal the state of the transparent observation tube and the float therein; the bottle body is also provided with a pressure relief valve and a negative pressure valve for adjusting or maintaining the negative pressure value in the inner cavity.

[0008] Furthermore, it also includes a partition, which is arranged in the exhaust channel and divides the exhaust channel into a first air channel and a second air channel up and down, and the second air channel is connected to the first air channel through the dry seal valve; the pressure relief valve and the negative pressure valve are both connected to the first air channel, and two air vents with different heights and staggered distribution are provided on the bottom wall of the second air channel.

[0009] Furthermore, a hemispherical containing bucket is provided at the connection between the dry seal valve and the transparent observation tube, the float is arranged in the hemispherical containing bucket, and there is a movable gap between the float, the hemispherical containing bucket and the transparent observation tube, and a small hole is opened at the bottom of the hemispherical containing bucket and connected to the dry seal valve.

[0010] Furthermore, the air-permeable tube is a tapered tube that is larger at the top and smaller at the bottom and has a sealed lower end. The side wall of the tapered tube is provided with at least two openings communicating with the tube cavity around the circumference.

[0011] Furthermore, the bottle body is integrally formed by injection molding.

[0012] Furthermore, the drainage joint is connected to a platinum silicone tube, and one end of the platinum silicone tube away from the drainage joint is connected to a quick-release joint.

[0013] Furthermore, a negative pressure status indicator is provided in the inner cavity, which is a flexible circular pad that can be movably attached to or away from the transparent wall. The flexible circular pad is arranged in a circular mounting seat arranged on the transparent wall. The middle part of the flexible circular pad facing the transparent wall is an elastic indicating surface and an indicating mark is provided on it. The circular mounting seat is provided with an opening connected to the inner cavity.

[0014] Furthermore, an automatic high-negative-pressure release valve matched with a negative-pressure status indicator is arranged at the same height on the side wall of the bottle body facing the transparent wall. The automatic high-negative-pressure release valve includes a valve body arranged on the side wall of the bottle body and a spring and a valve plate arranged in the valve body. One end of the valve body is connected to an opening, and the other end is opened to connect to the air duct outside. An annular boss protruding in a circle and matching with the valve plate is arranged on the side wall of the bottle body facing the transparent wall. The valve plate is a silicone gasket, and the spring tends to push the silicone gasket to make it close to the annular boss to close the air duct connecting the valve body to the outside world.

[0015] Furthermore, the sampling connector is arranged on a side wall of the bottle body facing the transparent wall, and the side wall is provided with an inwardly concave recess and a liquid discharge port. The sampling connector is a Luer connector arranged in the recess, and a one-way valve is provided in the Luer connector.

[0016] Furthermore, the top of the bottle body is provided with a plurality of strap holes for threading straps and / or hook holes for threading hooks.

[0017] The portable waterless dry-seal chest drainage device with observable air leakage designed by the present invention realizes multiple functions such as no need for water-sealing fluid, avoiding water seal failure, and real-time monitoring of the device status by combining a dry-seal valve with a transparent observation tube for observing air leakage. Specifically, the design of the transparent observation tube and the float gives the device the ability to monitor its own status in real time. Medical staff can directly observe the position changes of the float through the observation window to judge the airtightness and patency of the device, as well as whether the patient's chest cavity is leaking. This helps medical staff to quickly judge the quality of the operation and the patient's postoperative recovery. In addition, the device of the present invention is small in size, light in weight, and easy to operate, which is convenient for patients to carry and for early out-of-bed activities, which is beneficial to postoperative recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of a portable waterless dry-seal chest drainage device with observable air leakage provided in an embodiment of the present application;

[0019] Figure 2 This is a three-dimensional exploded view of a portable waterless dry-seal chest drainage device with observable air leakage provided in an embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the planar structure in the inner cavity of the bottle body provided by an embodiment of the present application;

[0021] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle;

[0022] Figure 5 yes Figure 3 Cross-sectional view at the middle BB.

[0023] Among them: bottle body 10, sampling connector 11, drainage connector 12, suction connector 13, transparent wall 14, partition 15, recessed portion 16, belt hole 17, hook hole 18, exhaust channel 20, first air channel 21, second air channel 22, air permeable tube 23, dry seal valve 30, transparent observation tube 40, float 50, pressure relief valve 60, negative pressure valve 70, negative pressure status indicator 80, circular mounting seat 81, automatic high negative pressure release valve 90, valve body 91, valve plate 92, annular boss 93. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0025] Example 1

[0026] like Figures 1 to 5 As shown, the portable waterless dry-seal chest drainage device capable of observing air leakage described in this embodiment includes:

[0027] Bottle body 10: Bottle body 10 has an inner cavity for containing pleural drainage fluid. In this embodiment, bottle body 10 is made of a transparent material, such as medical-grade ABS plastic, and manufactured using one-piece injection molding technology. The transparent bottle body 10 allows medical staff to easily observe the amount, color, and properties of the drainage fluid, allowing them to promptly monitor changes in the patient's condition. Furthermore, ABS material offers excellent corrosion and impact resistance, extending the device's service life and reducing maintenance costs.

[0028] Sampling connector 11: Located at the bottom of the bottle body 10, it is connected to the inner cavity and is used to extract drainage fluid for testing and analysis. In this embodiment, the sampling connector 11 can adopt a standard interface such as a Luer connector to facilitate connection to sampling tools such as syringes.

[0029] Drainage connector 12: Located at the top of the bottle body 10, it is connected to the inner cavity and is used to connect a chest drainage tube to drain the accumulated air, fluid, and blood in the chest cavity into the bottle body 10. In this embodiment, the drainage connector 12 can be a Luer connector or other interface suitable for connecting a drainage tube.

[0030] Suction connector 13: located at the top of the bottle body 10, connected to the inner cavity, used to connect to a negative pressure source such as a medical suction device to perform negative pressure suction on the chest cavity to promote lung re-expansion.

[0031] In addition, the suction connector 13 is connected to the inner cavity to form an exhaust channel 20. A one-way ventilated dry seal valve 30 is provided in the exhaust channel 20, which allows gas to be discharged from the chest cavity in one direction, preventing external air from entering the chest cavity and ensuring the safety of drainage. The upper end of the dry seal valve 30 is connected to a transparent observation tube 40, which connects the suction connector 13 and the dry seal valve 30. A float 50 is provided in the transparent observation tube 40, and the float 50 is configured to block the transparent observation tube 40 in the absence of external force. One side wall of the bottle body 10 is a transparent wall 14 (generally the front of the bottle body 10). The transparent wall 14 can reveal the status of the transparent observation tube 40 and the float 50 therein. The bottle body 10 is also provided with a pressure relief valve 60 and a negative pressure valve 70 for adjusting or maintaining the negative pressure value in the inner cavity.

[0032] In practice, a dry seal valve 30 is used to connect the suction connector 13 and the inner cavity of the bottle body 10, forming an exhaust channel 20 for gas discharge. The core function of the dry seal valve 30 is to ensure the one-way exhaust of gas and prevent the backflow of external air into the chest cavity. That is, because there is no need to add water seal liquid like traditional water seal bottles, this device completely avoids the risk of water seal failure caused by the water seal bottle tipping or water seal liquid evaporation, significantly improving the safety of drainage. At the same time, to facilitate medical personnel to monitor the working status of the device in real time, a transparent observation tube 40 is connected to the upper end of the dry seal valve 30. A float 50 is placed in the tube. Under normal circumstances, that is, when the device is in a sealed state, the float 50 will fall to the bottom of the transparent observation tube 40 due to its own gravity, blocking the observation tube 40. When the suction connector 13 is connected to a medical suction device to perform negative pressure suction on the chest cavity, the gas in the chest cavity will be discharged along the exhaust channel 20 and flow through the transparent observation tube 40. At this time, the airflow will push the float 50 upward, releasing the blockage of the transparent observation tube 40.

[0033] This allows medical staff to visually observe the position changes of the float 50 through the transparent wall 14 of the bottle 10, providing real-time information on the device's operating status. If the float 50 is floating upward, it indicates the device is unobstructed and gas is being discharged; if the float 50 falls back to the bottom, it indicates the device is sealed and gas discharge has ceased. Furthermore, the speed and amplitude of the float 50's movement can reflect changes in the negative pressure in the chest cavity, helping medical staff better understand the patient's condition. In this embodiment, to enhance visibility, the float 50 can be a more conspicuous color, such as red, for easier observation by medical staff.

[0034] In this embodiment, a pressure relief valve 60 and a negative pressure valve 70 are provided on the bottle body 10. The pressure relief valve 60 is used to exhaust air and reduce the pressure when the air pressure in the bottle body 10 is too high, that is, the pressure reduction treatment can further improve the safety of the drainage device; and the negative pressure valve 70 can allow the outside atmosphere to enter the negative pressure valve 70 to balance the pressure when the bottle body 10 is connected to the suction device for drainage, and maintain the drainage device at a preset suction pressure, that is, the negative pressure valve 70 automatically compensates for slight changes in the pressure of the negative pressure source, accelerates the drainage efficiency, and ensures continuous and thorough drainage, that is, when the output pressure of the negative pressure source is greater than the pressure threshold set to be maintained by the negative pressure valve 70, no matter how the output pressure of the negative pressure source is adjusted, the pressure in the bottle body 10 will no longer change, thereby ensuring safety of use.

[0035] In some embodiments, as Figure 2 、 Figure 3 As shown, the device also includes a partition 15, which is disposed within the exhaust passage 20 and divides the exhaust passage 20 into a first airway 21 and a second airway 22. The second airway 22 is connected to the first airway 21 via the dry seal valve 30. The pressure relief valve 60 and the negative pressure valve 70 are both connected to the first airway 21. Two vent tubes 23 of different heights and staggered arrangement are provided on the bottom wall of the second airway 22. This ensures that at least one vent tube 23 remains above the drainage fluid level even if the bottle body 10 tilts or even inverts, maintaining the patency of the second airway 22 and allowing gas to be discharged smoothly. Furthermore, the partition 15 divides the exhaust passage 20 into two sections. Even if a small amount of drainage fluid enters the second airway 22, it will not directly affect the normal operation of the dry seal valve 30 and the first airway 21, further preventing the drainage fluid from being aspirated into the chest cavity and further ensuring patient safety. Furthermore, the presence of the partition 15 can enhance the structural strength of the exhaust channel 20 and even the bottle body 10, making it more stable and less prone to deformation or damage, thereby improving the reliability of the device.

[0036] In some embodiments, as Figure 3 、 Figure 4 As shown, a hemispherical receiving hopper (not shown) is provided at the connection between the dry seal valve 30 and the transparent observation tube 40. The float 50 is disposed within the hemispherical receiving hopper, with clearance between the float 50, the hemispherical receiving hopper, and the transparent observation tube 40. A small hole is provided at the bottom of the hemispherical receiving hopper, which communicates with the dry seal valve 30. This hemispherical receiving hopper provides support for the float 50, and the clearance between the float 50, the hemispherical receiving hopper, and the transparent observation tube 40 prevents the float 50 from becoming stuck, ensuring unobstructed access to the transparent observation tube 40 and enabling medical personnel to clearly observe the movement of the float 50.

[0037] In some embodiments, as Figure 3As shown, the vent tube 23 is a tapered tube with a larger top and smaller bottom, and a sealed lower end. The tube's sidewall is provided with at least two openings around its circumference, connecting the tube lumen. This tapered structure, combined with the sealed bottom design, prevents drainage fluid from completely submerging the vent tube 23 even if the bottle is tilted or even inverted, while the openings ensure unimpeded ventilation.

[0038] In some embodiments, the drainage connector 12 is connected to a platinum silicone tube (not shown), and the end of the platinum silicone tube facing away from the drainage connector is connected to a quick-release connector (not shown). In this embodiment, the platinum silicone tube has a smooth inner wall, which can reduce the flow resistance of the drainage fluid, improve drainage efficiency, avoid pipeline blockage, and ensure the patency of drainage. The quick-release connector can be a locking type quick connector. When in use, it can be separated by simultaneously pressing the connector switch and plugging and unplugging the connector, which can effectively avoid the possibility of leakage due to accidental contact and facilitate connection to different devices.

[0039] In another example, a hemostatic clamp (not shown) is also provided on the platinum silicone tube to facilitate manual operation by medical staff, thereby avoiding the inconvenience of using hemostatic forceps in clinical practice.

[0040] In some embodiments, as Figure 4 、 Figure 5 As shown, a negative pressure status indicator 80 is provided in the inner cavity. The negative pressure status indicator 80 is a flexible circular pad that can be flexibly attached to or away from the transparent wall 14. The flexible circular pad is mounted in a circular mounting seat 81 disposed on the transparent wall 14. The middle portion of the flexible circular pad facing the transparent wall 14 is an elastic indicating surface with an indicator mark provided thereon. The circular mounting seat 81 is provided with an opening that connects to the inner cavity. In a specific embodiment, the flexible circular pad uses the marked side as the elastic indicating surface. When the pressure in the inner cavity of the bottle body 10 changes, the elastic indicating surface will align closer to the transparent wall 14 or rebound away from the transparent wall 14. When the bottle body 10 is in a vacuum state, the flexible circular pad is in close contact with the transparent wall 14 in the circular mounting seat, displaying a visible indicator mark. When the bottle body 10 is not in a vacuum state, the flexible circular pad moves away from the transparent wall 14 to the other side. In other words, by observing the faintly visible indicator mark on the transparent wall 14, it is possible to determine whether the bottle cavity is in negative pressure, thereby indicating whether the dry seal drainage device is in normal use.

[0041] In some embodiments, as Figure 4 、 Figure 5As shown, an automatic high-negative-pressure release valve 90 matched with the negative-pressure status indicator 80 is arranged at the same height on the side wall of the bottle body 10 facing the transparent wall 14. The automatic high-negative-pressure release valve 90 includes a valve body 91 provided on the side wall of the bottle body 10 and a spring and a valve plate 92 provided in the valve body 91. One end of the valve body 91 is connected to an opening, and the other end is opened to connect to the air passage outside. An annular boss 93 protruding in a circle and matching with the valve plate 92 is provided on the side wall of the bottle body 10 facing the transparent wall 14. The valve plate 92 is a silicone gasket. The spring tends to push the silicone gasket to make it close to the annular boss 93 to close the air passage connecting the valve body 91 to the outside. In this way, when the negative pressure in the bottle body 10 exceeds the preset value, the elastic force of the spring will be overcome, the silicone valve plate 92 will be sucked open by the negative pressure, and will lose contact with the annular boss 93. The valve body 91 will open, and the outside gas will enter the bottle body 10 through the airway, reducing the negative pressure in the bottle body and preventing excessive negative pressure from causing damage to the patient. This is set at the same level as the negative pressure status indicator 80. The two work together to monitor the negative pressure status in the bottle body in real time and automatically release the negative pressure when the negative pressure is too high, realizing automatic control without manual intervention.

[0042] In some embodiments, as Figure 1 、 Figure 2 As shown, the sampling connector 11 is disposed on a side wall of the bottle body 10 that faces the transparent wall 14. This side wall is provided with an inwardly concave recess 16 and a liquid discharge port (not shown). The sampling connector 11 is a Luer connector disposed within the recess 16 and has a one-way valve disposed therein. Positioning the sampling connector 11 on the side wall of the bottle body 10 facilitates sampling operations for medical personnel, eliminating the need to tilt or invert the entire device, reducing operational difficulty and preventing drainage fluid from overflowing and contaminating. Furthermore, positioning the sampling connector 11 within the recess 16 effectively protects the sampling connector from external impact or damage, extending its service life. The one-way valve prevents drainage fluid from flowing back into the bottle body 10, ensuring sampling accuracy, while also preventing outside air from entering the bottle body 10 and contaminating the drainage fluid. Furthermore, the provision of the liquid discharge port allows for manual opening and discharge when excessive drainage fluid accumulates within the bottle body 10, thereby extending the lifespan of the entire drainage device.

[0043] In some embodiments, as Figure 1 As shown, the top of the bottle body 10 is provided with a plurality of strap holes 17 for inserting a strap and / or hook holes 18 for inserting a hook. In practice, the strap holes 17 can be inserted into the strap holes to secure the device to the patient, making it easier for the patient to carry and move around. For example, the device can be secured around the waist or shoulder to prevent it from shaking or falling. The hook holes 18 can be used to hang the device at a bedside or on an IV stand, facilitating operation and observation by medical staff.

[0044] The portable waterless dry-seal chest drainage device with observable air leakage provided in this embodiment realizes multiple functions such as no need for water-sealing fluid, avoiding water seal failure, and real-time monitoring of the device status by combining a dry-seal valve with a transparent observation tube for observing air leakage. Specifically, the design of the transparent observation tube and the float gives the device the ability to monitor its own status in real time. Medical staff can directly observe the position changes of the float through the observation window to judge the airtightness and patency of the device, as well as whether the patient's chest cavity is leaking. This helps medical staff to quickly judge the quality of the operation and the patient's postoperative recovery. In addition, the utility model device is small in size, light in weight, and easy to operate, which is convenient for patients to carry and perform early activities out of bed, which is beneficial to postoperative recovery.

[0045] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0046] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A portable, waterless, dry-sealed chest drainage device capable of observing air leakage, comprising a bottle body having an inner cavity, a sampling connector disposed at the bottom of the bottle body and communicating with the inner cavity, and a drainage connector and a suction connector disposed at the top of the bottle body and communicating with the inner cavity, characterized in that: The suction joint is connected to the inner cavity to form an exhaust channel, and a one-way ventilation dry seal valve is provided in the exhaust channel; the upper end of the dry seal valve is connected to a transparent observation tube, and the transparent observation tube is connected to the suction joint and the dry seal valve, and a float is provided in the transparent observation tube, and the float is configured to seal the transparent observation tube in the absence of external force; one side wall of the bottle body is a transparent wall, and the transparent wall can reveal the status of the transparent observation tube and the float therein; the bottle body is also provided with a pressure relief valve and a negative pressure valve for adjusting or maintaining the negative pressure value in the inner cavity.

2. The portable waterless dry-sealed chest drainage device with observable air leakage according to claim 1, characterized in that: It also includes a partition, which is arranged in the exhaust channel and divides the exhaust channel into a first air channel and a second air channel up and down. The second air channel is connected to the first air channel through the dry seal valve; the pressure relief valve and the negative pressure valve are both connected to the first air channel, and two air vents with different heights and staggered distribution are provided on the bottom wall of the second air channel.

3. The portable waterless dry-sealed chest drainage device with observable air leakage according to claim 2, characterized in that: A hemispherical receiving bucket is provided at the connection between the dry seal valve and the transparent observation tube. The float is arranged in the hemispherical receiving bucket, and there is a movable gap between the float, the hemispherical receiving bucket and the transparent observation tube. A small hole is provided at the bottom of the hemispherical receiving bucket and is connected to the dry seal valve.

4. The portable waterless dry-sealed chest drainage device with observable air leakage according to claim 2, characterized in that: The air-permeable tube is a tapered tube that is larger at the top and smaller at the bottom and has a sealed lower end. The side wall of the tapered tube is provided with at least two openings communicating with the tube cavity around the circumference.

5. The portable waterless dry-sealed chest drainage device with observable air leakage according to claim 1, characterized in that: The bottle body is integrally formed by injection molding.

6. The portable waterless dry-sealed chest drainage device capable of observing air leakage according to claim 1, characterized in that: The drainage joint is connected to a platinum silicone tube, and one end of the platinum silicone tube away from the drainage joint is connected to a quick-release joint.

7. The portable, waterless, dry-sealed chest drainage device capable of observing air leakage according to any one of claims 1 to 6, characterized in that: A negative pressure status indicator is provided in the inner cavity. The negative pressure status indicator is a flexible circular pad that can movably fit into or away from the transparent wall. The flexible circular pad is arranged in a circular mounting seat provided on the transparent wall. The middle part of the flexible circular pad facing the transparent wall is an elastic indicating surface with an indicating mark provided thereon. The circular mounting seat is provided with an opening connected to the inner cavity.

8. The portable waterless dry-sealed chest drainage device capable of observing air leakage according to claim 7, characterized in that: An automatic high-negative-pressure release valve, which is matched with a negative-pressure status indicator, is arranged at the same height on the side wall of the bottle body facing the transparent wall. The automatic high-negative-pressure release valve includes a valve body arranged on the side wall of the bottle body and a spring and a valve plate arranged in the valve body. One end of the valve body is connected to an opening, and the other end is opened to connect to the air duct of the outside world. An annular boss protruding in a circle and matching with the valve plate is arranged on the side wall of the bottle body facing the transparent wall. The valve plate is a silicone gasket, and the spring tends to push the silicone gasket to make it close to the annular boss to close the air duct connecting the valve body to the outside world.

9. The portable waterless dry-sealed chest drainage device capable of observing air leakage according to claim 1, characterized in that: The sampling connector is arranged on a side wall of the bottle body facing the transparent wall. The side wall is provided with an inwardly concave recess and a liquid discharge port. The sampling connector is a Luer connector arranged in the recess, and a one-way valve is arranged in the Luer connector.

10. The portable waterless dry-sealed chest drainage device capable of observing air leakage according to claim 1, characterized in that: The top of the bottle body is provided with a plurality of strap holes for passing straps and / or hook holes for passing hooks.

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