Water-free and water-seal dual-purpose chest drainage device

Abstract

The utility model relates to a water-free water seal dual-purpose chest drainage device which comprises a bottle body, and the interior of the bottle body is divided into an indicating cavity, a pressure regulating cavity and at least one hydrops cavity which are communicated with one another through partition plates. According to the water-seal-free dual-purpose chest drainage device, safe and effective drainage in a water-seal-free state is achieved, the potential risk of pneumothorax caused by water seal liquid loss or backflow in a traditional water seal drainage device is fundamentally solved, the safety of the drainage process is greatly improved, and meanwhile the drainage effect is improved. The device also considers that part of clinical medical staff are still habitual to traditional water seal drainage operation, has a flexible mode switching function, can be conveniently converted into a water seal mode for use, is clear and visible in water column fluctuation, is completely unchanged in other operation procedures, is perfectly compatible with the existing clinical operation habits, and is suitable for popularization and application. Therefore, clinical requirements of different medical staff can be better met, and the medical care device has wider applicability and popularization value.

Description

Technical Field

[0001] This utility model relates to the technical field of chest drainage devices, and in particular to a waterless and water-seal dual-purpose chest drainage device. Background Technology

[0002] Closed thoracic drainage is an indispensable and important technique in the treatment of thoracic diseases and is widely used in clinical practice. The core principle of this technique is to establish a closed drainage system that effectively drains effusion and pneumothorax from the pleural cavity while preventing outside air from entering. In this way, the negative pressure within the pleural cavity is restored, thereby promoting lung re-expansion and restoring the patient's normal respiratory function.

[0003] To achieve closed chest drainage, specialized drainage devices are required clinically. Currently, common chest drainage devices are mainly divided into two categories: traditional water-seal drainage bottles and the dry-seal drainage bottles developed in recent years. Although both types of devices play important roles in their respective applications, they have significant limitations, particularly in terms of versatility. Traditional water-seal drainage bottles utilize a water column to form a one-way valve, resulting in a simple structure and low cost, but they suffer from problems such as water seal fluid loss during pouring, cumbersome operation, and inaccurate negative pressure control. Dry-seal drainage bottles, on the other hand, replace the water seal with a mechanical valve or membrane structure, avoiding the risk of water seal fluid loss, but they may have shortcomings in areas such as leak observation and negative pressure adjustment.

[0004] More importantly, the water-seal and dry-seal drainage bottles currently used in clinical practice are typically independently designed products, lacking interoperability. This means that if a patient initially uses a water-seal drainage bottle but needs to switch to a dry-seal bottle due to changes in their condition, treatment requirements, or other reasons, the entire drainage device must be replaced, and vice versa. This lack of interoperability not only increases the complexity of clinical procedures and prolongs replacement time but also significantly increases medical costs. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a waterless and water-seal dual-purpose thoracic drainage device that combines the safety and convenience of a waterless system with the intuitive compatibility of a water seal, offering a safer, more efficient, and flexible drainage solution for clinical use.

[0006] To achieve the above objectives, the present invention provides a waterless and water-seal dual-purpose chest drainage device, comprising:

[0007] The bottle body has an indicator chamber, a pressure regulating chamber, and at least one interconnected liquid accumulation chamber formed by a partition; the liquid accumulation chamber and the pressure regulating chamber are located on the left and right sides of the indicator chamber, and the indicator chamber is connected to the liquid accumulation chamber and the pressure regulating chamber through different channels;

[0008] A drainage port is located at the top of the bottle and communicates with the liquid accumulation chamber;

[0009] A suction port is provided at the top of the bottle and communicates with the pressure regulating chamber. The suction port is provided with a mounting base for installing a dry seal valve or a negative pressure suction connector.

[0010] A water seal leakage indicator is installed in the channel between the indicator chamber and the pressure regulating chamber for monitoring gas leakage in the patient's pleural cavity;

[0011] A negative pressure indicator is installed on the bottle body and connected to the pressure regulating chamber to indicate the magnitude of the negative pressure inside the bottle body.

[0012] A negative pressure regulating valve is installed on the bottle body and connected to the pressure regulating chamber, used to regulate the negative pressure value inside the bottle body;

[0013] The channel between the liquid accumulation chamber and the indicator chamber is adjacent to the top wall of the bottle body, and the channel between the indicator chamber and the pressure regulating chamber is adjacent to the bottom wall of the bottle body; the indicator chamber is provided with a floating element for observing the fluctuation of the water column in the indicator chamber; at least a part of the bottle body is made of transparent material to allow observation of the liquid accumulation chamber, the water seal leakage indicator device, the indicator chamber and the floating element.

[0014] Preferably, the water seal leakage indicator includes an inclined plate, which is inclinedly disposed in the pressure regulating chamber towards the bottom wall of the bottle on the side opposite to the indicator chamber, and the inclined plate separates the pressure regulating chamber to form a first chamber that connects the liquid accumulation chamber and the indicator chamber; the inclined plate has a plurality of first air holes arranged along the inclined direction of the inclined plate, and the first chamber is connected to the pressure regulating chamber through the first air holes; wherein, when a negative pressure suction connector is installed on the mounting base, the height of the indicator liquid injected into the indicator chamber at least submerges the first air hole on the inclined plate closest to the indicator chamber.

[0015] Preferably, the lower side of the inclined plate has a plurality of gradually expanding holes that correspond one-to-one with the first air holes, and the diameter of the gradually expanding holes increases toward the bottom wall of the bottle along the inclination direction of the inclined plate.

[0016] Preferably, the pressure regulating chamber is divided by a partition to form a second chamber for accommodating the negative pressure indicator and the negative pressure regulating valve; wherein, the negative pressure indicator is a red, retractable corrugated membrane structure, which has a second vent that communicates with the external environment.

[0017] Preferably, a downwardly oriented tapered tube is provided inside the pressure regulating chamber, the tapered tube separates the pressure regulating chamber to form a third chamber, and the inner diameter of the tapered tube decreases along its own inclination direction; the pressure regulating chamber is connected to the third chamber through the tapered tube, and the suction port is connected to the third chamber.

[0018] Preferably, the bottle body is divided by a partition to form a buffer cavity, the liquid accumulation cavity is connected to the indicator cavity through the buffer cavity, and the volume of the buffer cavity is greater than the volume of the indicator liquid injected into the indicator cavity.

[0019] Preferably, a horizontally arranged connecting pipe is provided in the channel between the liquid accumulation chamber and the indicator chamber, and the liquid accumulation chamber is connected to the buffer chamber through the connecting pipe; a flow-blocking valve is provided between the buffer chamber and the indicator chamber.

[0020] Preferably, it also includes a drain port, which is disposed on the bottle body and communicates with the liquid accumulation chamber, and the drainage interface, suction interface and drain port are all connected to an anti-torsion corrugated tube, the free end of which is connected to a quick-release connector.

[0021] Preferably, it also includes a manual negative pressure release valve, which is installed on the bottle body and used to release the positive pressure inside the bottle.

[0022] Preferably, it further includes:

[0023] A handle is provided on the top of the bottle body, and the surface of the handle is recessed to form a receiving cavity, and a hanging rope is provided in the receiving cavity to be wrapped around the handle;

[0024] A support plate is rotatably mounted on the bottom of the bottle body and has a hidden position and a supporting position. In the hidden position, the support plate can rotate to the bottom of the bottle body and overlap with the bottom wall of the bottle body; in the supporting position, the support plate is used to support the bottle body.

[0025] This invention presents a novel waterless and water-seal dual-purpose thoracic drainage device that innovatively achieves safe and effective drainage without a water seal, completely eliminating the potential risk of pneumothorax caused by water seal fluid loss or backflow in traditional water-seal drainage devices. The device not only allows for direct observation of the patient's pleural cavity recovery trend but also features simple and quick operation, significantly improving the efficiency of clinical application and facilitating rapid patient recovery. Furthermore, for clinicians still accustomed to using water seals, the device can be converted to water seal operation with clear water column fluctuations, while other operations remain completely unchanged, better meeting clinical needs.

[0026] This utility model designs a waterless and water-seal dual-purpose chest drainage device. To ensure absolute safety during use, the dry-seal valve inside the drainage device can be installed / removed before delivery. Customers can achieve safe and effective drainage in both waterless and water-seal states, fundamentally solving the potential risk of pneumothorax caused by water seal fluid loss or backflow in traditional water-seal drainage devices, greatly improving the safety of the drainage process. At the same time, the device also takes into account that some clinical medical staff are still accustomed to traditional water-seal drainage operations. It has a flexible mode switching function, which can be easily switched to water-seal mode, and the water column fluctuation is clearly visible. Other operating procedures remain completely unchanged, perfectly compatible with existing clinical operating habits, thus better meeting the clinical needs of different medical staff, and has wider applicability and promotional value. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the waterless water seal dual-purpose chest drainage device provided in the embodiments of this application.

[0028] Figure 2 yes Figure 1 A three-dimensional exploded view.

[0029] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0030] Figure 4 This is a schematic plan view of the structure of the waterless water seal dual-purpose chest drainage device provided in the embodiments of this application.

[0031] Figure 5 This is a schematic diagram of the structure of the waterless water seal dual-purpose chest drainage device provided in the embodiments of this application from another perspective.

[0032] Figure 6 This is a schematic diagram of the inclined plate structure provided in the embodiment of this application.

[0033] Figure 7 This is a schematic diagram of the mounting base assembly provided in the embodiments of this application.

[0034] The components include: bottle body 10, transparent wall 10a, indicator chamber 11, pressure regulating chamber 12, second chamber 121, third chamber 122, injection port 123, liquid accumulation chamber 13, first component trough 13a, second component trough 13b, third component trough 13c, conical tube 14, buffer chamber 15, connecting pipe 16, flow control valve 17, liquid discharge port 18, handle 19, hanging rope 191, support plate 192, drainage interface 20, suction interface 30, mounting base 31, dry seal valve 32, negative pressure suction connector 33, water seal leakage indicator device 40, inclined plate 41, first chamber 42, first air hole 43, gradually expanding hole 44, negative pressure indicator 50, second air hole 51, negative pressure regulating valve 60, floating component 70, anti-torsion bellows 80, manual negative pressure release valve 90, and positive pressure release valve 100. Detailed Implementation

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] like Figures 1 to 7 As shown in this embodiment, the waterless water-seal dual-purpose chest drainage device is mainly used in clinical chest drainage. It aims to solve the problems of tipping risk, cumbersome operation, and inaccurate negative pressure control of traditional water-seal drainage bottles, while also taking into account the usage needs of different clinical scenarios.

[0037] The device mainly includes core components such as bottle body 10, inlet port 20, suction port 30, water seal leakage indicator 40, negative pressure indicator 50, negative pressure regulating valve 60, and floating component 70.

[0038] Specifically, the bottle body 10 is a completely sealed structure with an internal partition (not shown in the figure) dividing it into an independent indicating chamber 11, a pressure regulating chamber 12, and at least one interconnected liquid accumulation chamber 13. The liquid accumulation chamber 13 and the pressure regulating chamber 12 are located on opposite sides of the indicating chamber 11. Different channels are provided between the indicating chamber 11 and the liquid accumulation chamber 13 and pressure regulating chamber 12. These channels guide the flow of gas and liquid between the different chambers, thereby enabling functions such as drainage, liquid level observation, and gas leak monitoring.

[0039] A drainage port 20 is located at the top of the bottle body 10 and communicates with the effusion chamber 13; a suction port 30 is located at the top of the bottle body 10 and communicates with the pressure regulating chamber 12. The suction port 30 has a mounting base 31 inside for installing a dry-seal valve 32 or a negative pressure suction connector 33. In specific implementation, the drainage port 20 is used to connect to a chest drainage tube to guide effusion or pneumothorax in the pleural cavity into the effusion chamber 13, while the suction port 30 is used to connect to a negative pressure suction source or the external atmospheric environment. Inside the suction port 30, a mounting base 31 is provided, such as... Figure 7 As shown, the mounting base 31 is used to install the dry seal valve 32 or the negative pressure suction connector 33, so that medical staff can flexibly switch between the waterless dry seal mode and the water seal mode according to actual needs, thereby better meeting different clinical application scenarios.

[0040] In one specific embodiment, to ensure absolute safety during use, the dry-seal valve 32 inside the drainage device is assembled or disassembled before delivery, and a negative pressure suction connector 33 is provided. In this way, customers can choose between anhydrous dry-seal or water-seal devices for safe and effective drainage operations according to their needs. This flexible factory configuration allows for the production of both anhydrous dry-seal and water-seal devices by assembling or disassembling the dry-seal valve 32 during manufacturing, without requiring the design of new structures. This significantly reduces production costs, improves production efficiency, and ensures consistent assembly quality of the dry-seal valve 32.

[0041] A water-seal leakage indicator 40 is disposed in the channel between the indicator chamber 11 and the pressure regulating chamber 12, and is used to monitor gas leakage in the patient's pleural cavity. The indicator chamber 11 is equipped with a floating element 70 for observing the fluctuation of the water column within the chamber. The water-seal leakage indicator 40 is used to monitor gas leakage in the patient's pleural cavity and serves as a measurement channel for the water-seal liquid column in water-seal mode. The specific structure and working principle of the water-seal leakage indicator 40 will be described in detail later.

[0042] A negative pressure indicator 50, installed in the bottle body 10 and connected to the pressure regulating chamber 12, is used to indicate the magnitude of the negative pressure inside the bottle body 10. A negative pressure regulating valve 60, installed in the bottle body 10 and connected to the pressure regulating chamber 12, is used to regulate the negative pressure value inside the bottle body 10. In this embodiment, the negative pressure regulating valve 60 indicates -40 to 0 cmH2O. Its working mechanism is to control the flow rate of external air into the bottle body 10, thereby balancing the fixed negative pressure source and ensuring that the remaining negative pressure is retained inside the bottle body 10, achieving precise negative pressure control.

[0043] Specifically, the channel between the liquid accumulation chamber 13 and the indicator chamber 11 is adjacent to the top wall of the bottle body 10, and the channel between the indicator chamber 11 and the pressure regulating chamber 12 is adjacent to the bottom wall of the bottle body 10. This structural design allows, on the one hand, the liquid entering from the drainage port 20 to directly enter the liquid accumulation chamber 13, and the gas within it to more easily escape upwards into the indicator chamber 11, thereby improving the efficiency of gas-liquid separation and effectively avoiding interference to liquid column observation caused by liquid entering the indicator chamber 11 in water seal mode, making leak detection and water column fluctuation observation clearer and more accurate. On the other hand, the channel between the indicator chamber 11 and the pressure regulating chamber 12 is close to the bottom, allowing the water seal leak indicator device 40 to form a relatively stable water seal environment in water seal mode, ensuring the reliability of the water seal effect.

[0044] At least a portion of the bottle body 10 is made of transparent material to allow observation of the effusion chamber 13, the water seal leakage indicator 40, the indicator chamber 11, and the floating component 70. In a specific implementation, a transparent wall 10a is laser-welded to one side of the bottle body 10, and the surface of the transparent wall 10a can be printed. After printing, only the scale line window of the effusion chamber 13, the water column fluctuation window of the indicator chamber 11, the leakage indicator window of the water seal leakage indicator 40, and the negative pressure indicator window of the negative pressure indicator 50 are retained; the remaining portion is covered by printing. This ensures transparent observation while preventing the drainage material from appearing unpleasant or oppressive. Furthermore, in another example, the printing on the surface of the transparent wall 10a can be customized according to the target population. For example, cartoon character printing can be customized for pediatric patients, thereby increasing their cooperation and acceptance of the drainage treatment process. Moreover, the printed surface of the transparent wall 10a can also record relevant information such as patient name, bed number, date, and drainage scale using an oil-based pen, facilitating clinical management.

[0045] In some embodiments, such as Figure 4As shown, the liquid accumulation chamber 13 has three component channels: a first component channel 13a, a second component channel 13b, and a third component channel 13c. These three component channels are interconnected in the region adjacent to the top wall of the bottle body 10, thereby allowing the drainage liquid to be evenly distributed throughout the liquid accumulation chamber 13. In this embodiment, the maximum capacity of the entire effusion cavity 13 is 2100 ml, while the effective capacity is 2000 ml. The first component trough 13a is located directly below the drainage port 20 and is mainly used to collect the initial drainage fluid. It has high measurement accuracy. The scale of the first component trough 13a is marked with a minimum interval of 1 ml and a number every 5 ml. Its volume is 200 ml. This high-precision scale allows medical staff to accurately measure small amounts of drainage fluid, thereby enabling more precise evaluation of the drainage effect. The second component trough 13b and the third component trough 13c are mainly used to collect larger volumes of drainage fluid. Their scale is marked with a minimum interval of 10 ml and a number every 50 ml. This ensures sufficient measurement accuracy while also taking into account the measurement efficiency for large amounts of drainage fluid, thus meeting the drainage needs at different stages. This provides clinical medical staff with accurate and convenient drainage fluid volume measurement, thereby better evaluating the effect of thoracic drainage and the patient's recovery status.

[0046] In some embodiments, such as Figure 2 , Figure 4 , Figure 6 As shown, the water seal leakage indicator 40 includes an inclined plate 41. The inclined plate 41 is inclined towards the bottom wall of the bottle body 10 and is disposed in the pressure regulating chamber 12 on the side opposite to the indicator chamber 11. The inclined plate 41 separates the pressure regulating chamber 12 to form a first chamber 42 that connects the liquid accumulation chamber 13 and the indicator chamber 11. The inclined plate 41 has a plurality of first air holes 43 arranged along the inclined direction of the inclined plate 41. The first chamber 42 is connected to the pressure regulating chamber 12 through the first air holes 43. When the negative pressure suction connector 33 is installed on the mounting base 31, the height of the indicator liquid injected into the indicator chamber 11 is at least submerged in the first air hole 43 on the inclined plate 41 closest to the indicator chamber 11.

[0047] Specifically, when switching to water seal mode, the dry seal valve 32 can be removed from the device before delivery. Ensure the negative pressure suction effect is maintained in water seal mode. When installing the negative pressure suction connector 33, its bottom channel extends to the base port of the mounting base 31 where the dry seal valve 32 is installed. This allows medical personnel to add indicator fluid (generally about 45ml) into the indicator chamber 11 through the negative pressure suction connector 33. The height of the indicator fluid must at least submerge the first air hole 43 closest to the indicator chamber 11 on the inclined plate 41, thus forming a reliable water seal and ensuring the normal functioning of the one-way valve. In water seal mode, when gas leakage occurs in the patient's pleural cavity, the degree of leakage will be visually indicated by the bubbling phenomenon in the indicator fluid. That is, the more severe the gas leakage in the patient's pleural cavity, the more obvious the bubbling phenomenon will be, and it will gradually spread distally from the first air hole 43 on the inclined plate 41. This clearly visible bubbling phenomenon allows medical staff to quickly and accurately determine the patient's air leakage, enabling timely treatment intervention. Simultaneously, in water-seal mode, the first vent 43 is always sealed by the indicator liquid column under normal or negative pressure conditions. This means that gas will only overcome the resistance of the liquid column and be discharged through the first vent 43 when the pressure inside the patient's pleural cavity is too high. Therefore, under normal or negative pressure conditions, the first vent 43 remains closed, effectively preventing outside air from entering the pleural cavity and avoiding risks such as reflux or pneumothorax, ensuring the safety and reliability of the drainage process.

[0048] Furthermore, to improve the visibility of the water column fluctuations and facilitate observation and judgment by medical staff, in this embodiment, the floating component 70 is typically made of a lightweight, brightly colored material, such as a small red plastic ball. This design allows the floating component 70 to float very clearly within the liquid column in the indicator cavity 11, making even minute water column fluctuations readily observable. Under normal circumstances, a patient's breathing causes pressure changes within the pleural cavity, resulting in corresponding fluctuations in the water column within the indicator cavity 11. By observing the fluctuations of the floating component 70, medical staff can visually determine whether the pressure changes within the patient's pleural cavity are synchronized with breathing, thereby indirectly assessing the patient's respiratory function and promptly detecting respiratory abnormalities. In this case, the floating component 70 assists medical staff in observing the overall fluctuations of the water column and makes it easier to distinguish between normal water column fluctuations caused by breathing and bubbles caused by air leakage. This allows medical staff to accurately determine whether negative pressure has been established in the patient's pleural cavity and to promptly perform appropriate diagnosis and treatment, thus ensuring the safety of the drainage process. In another example, the surface of the floating part 70, i.e. the plastic ball, is coated with a layer of easily soluble colored dye. When a water-sealing liquid is added, the water-sealing liquid is dissolved and stained by the colored dye, making it easier to observe. For example, the indicator liquid used in the indicator chamber 11 is stained with blue physiological saline. The blue indicator liquid contrasts sharply with the white or other light-colored background, making the water column fluctuations and leaking air bubbles more clearly visible, thereby reducing the difficulty of observation and improving the accuracy of observation.

[0049] In another example, the bottle body 10 is also provided with a liquid injection port 123 that communicates with the pressure regulating chamber 12. This liquid injection port 123 can be used as a channel to directly add indicator liquid in the waterless mode. In addition, in the water seal mode, water seal liquid can be directly injected through the suction port 30.

[0050] In some embodiments, such as Figure 4 , Figure 6 As shown, the lower side of the inclined plate 41 has several gradually expanding holes 44 corresponding one-to-one with the first air vents 43. The diameter of the gradually expanding holes 44 increases gradually towards the bottom wall of the bottle body 10 along the inclination direction of the inclined plate 41. Thus, the entrance of the gradually expanding holes 44, that is, the side away from the first air vent 43, is relatively wide. Taking the application of scales 1 to 5 as an example, when the pleural cavity leakage is severe, bubbles will emerge from the farthest end 5, and when the pleural cavity leakage is slight, bubbles will emerge from the nearest end 1, thereby informing medical staff of the patient's condition and recovery status.

[0051] In some embodiments, such as Figure 4 As shown, the pressure regulating chamber 12 is divided by a partition to form a second chamber 121 that accommodates the negative pressure indicator 50 and the negative pressure regulating valve 60; wherein, the negative pressure indicator 50 is a red, retractable corrugated membrane structure, which has a second vent 51 that communicates with the external environment.

[0052] In this way, the pressure regulating chamber 12 is divided into an independent second chamber 121 by the partition, which effectively isolates the negative pressure indicator 50 and the negative pressure regulating valve 60 from other gases and liquids in the pressure regulating chamber 12, so as to effectively prevent drainage fluid or other impurities from entering, thereby providing good protection for these key components and extending their service life. The negative pressure indicator 50 adopts a red retractable corrugated membrane structure, which gives it good sensitivity and visualization effect. Specifically, when there is negative pressure in the pressure regulating chamber 12, external air will enter through the second air hole 51 on the corrugated membrane structure to balance the pressure inside and outside the corrugated tube. This pressure balancing process will cause the corrugated tube to deform, specifically by elongation or contraction. The degree of deformation can intuitively reflect the magnitude of negative pressure in the pressure regulating chamber 12, thereby providing medical staff with an accurate negative pressure reference. In addition, to further improve the visualization of negative pressure indication, scale lines indicating the deformation position of the corrugated membrane can be printed on the transparent wall 10a. These scale lines can clearly indicate the degree of deformation of the corrugated membrane under different negative pressure values, enabling medical staff to read the negative pressure in the pressure regulating chamber 12 more intuitively and accurately, which is convenient for clinical operation and disease monitoring.

[0053] In some embodiments, such as Figure 3 , Figure 4As shown, a downwardly oriented tapered tube 14 is provided inside the pressure regulating chamber 12. The tapered tube 14 separates the pressure regulating chamber 12 to form a third chamber 122, and the inner diameter of the tapered tube 14 decreases along its own inclination direction. The pressure regulating chamber 12 is connected to the third chamber 122 through the tapered tube 14, and the suction port 30 is connected to the third chamber 122.

[0054] With this anti-backflow structure design, when the device is tilted at any angle, the pressure regulating chamber 12 is connected to the third chamber 122 through the cone tube 14, and the cone tube 14 is tilted downwards, making it difficult for the indicator liquid injected into the pressure regulating chamber 12 to flow out. This design effectively utilizes gravity, causing the liquid to tend to remain in the lower part of the cone tube 14 instead of overflowing directly from the suction port 30. At the same time, even in extreme cases where a small amount of indicator liquid flows back into the third chamber 122, the structure design of the cone tube 14, whose inner diameter decreases along its tilt direction, ensures that the indicator liquid can quickly flow back to the pressure regulating chamber 12 after the device is restored to an upright position, so as to quickly restore the normal state of the system, reduce the impact on the drainage effect, and also serve as an anti-backflow design.

[0055] In some embodiments, such as Figure 3 , Figure 4 As shown, the bottle body 10 is divided by a partition to form a buffer chamber 15. The liquid accumulation chamber 13 is connected to the indicator chamber 11 through the buffer chamber 15. The volume of the buffer chamber 15 is larger than the volume of the indicator liquid injected into the indicator chamber 11. In this embodiment, the main function of the buffer chamber 15 is to provide additional space for the indicator liquid that may flow back. That is, when the water column in the indicator chamber 11 fluctuates too much, or when the device is accidentally tilted, the excess indicator liquid will first enter the buffer chamber 15 instead of flowing back directly to the liquid accumulation chamber 13, thereby avoiding the indicator liquid directly impacting the liquid accumulation chamber and affecting the metering accuracy and stability of the liquid accumulation chamber.

[0056] In some embodiments, such as Figure 4 As shown, a horizontally arranged connecting pipe 16 is provided in the channel between the liquid accumulation chamber 13 and the indicator chamber 11, and the liquid accumulation chamber 13 is connected to the buffer chamber 15 through the connecting pipe 16; a flow-blocking valve 17 is provided between the buffer chamber 15 and the indicator chamber 11.

[0057] In practice, a certain distance is maintained between the outer wall of the connecting pipe 16 and the top wall of the bottle 10. This design ensures smooth airflow without affecting normal drainage and gas exchange. It also utilizes the horizontal setting of the connecting pipe 16 and the distance from the top wall to create a buffer, thereby preventing the accumulated liquid from quickly entering the buffer chamber 15 when the device is tilted, reducing the risk of mixing between the accumulated liquid and the indicator liquid. At the same time, a flow-blocking valve 17 is provided between the buffer chamber 15 and the indicator chamber 11. This flow-blocking valve can limit the indicator liquid from entering the buffer chamber 15 from the indicator chamber 11 under extreme conditions, thereby further preventing the possibility of backflowing indicator liquid contaminating the liquid accumulation chamber 13.

[0058] In some embodiments, such as Figure 4 , Figure 5 As shown, it also includes a drain port 18, which is disposed on the bottle body 10 and communicates with the liquid accumulation chamber 13. The drainage port 20, the suction port 30 and the drain port 18 are all connected to an anti-torsion corrugated tube 80, and the free end of the anti-torsion corrugated tube 80 is connected to a quick-release connector.

[0059] In practice, the drain port 18 uses a Luer connector to drain the drainage fluid from the effluent chamber 13 or to sample the drainage fluid. This facilitates the use of syringes and other equipment by medical personnel to extract the fluid. When necessary, the Luer connector can also be used to connect to the drainage pipeline for continuous drainage. The anti-twist corrugated pipe 80 effectively prevents pipeline twisting, ensuring smooth flow of gas and liquid. The quick-release connector enables rapid connection and disconnection, improving operational efficiency. Furthermore, the quick-release connector has anti-misoperation and anti-accidental contact measures; it can only be separated by simultaneously pressing the switch and inserting / removing it. This combined design makes fluid drainage and pipeline connection more convenient, safe, and efficient.

[0060] In some embodiments, such as Figure 3 , Figure 4 As shown, the device also includes a manual negative pressure release valve 90, which is installed on the bottle body 10 and used to release the positive pressure inside the bottle body 10. In this embodiment, the manual negative pressure release valve 90 consists of a spring, a silicone gasket, and a button. In actual use, when excessive positive pressure accumulates inside the device due to unexpected conditions (such as drainage tube blockage, patient coughing, etc.) and the patient experiences discomfort, medical staff can quickly release the excess pressure inside the device by manually pressing the button, thereby preventing complications such as tension pneumothorax caused by excessive positive pressure, ensuring patient safety, and reducing the operational difficulty for medical staff.

[0061] In some embodiments, such as Figure 1 , Figure 5 As shown, it also includes:

[0062] A handle 19 is located at the top of the bottle body 10, and the surface of the handle 19 is recessed to form a receiving cavity. A hanging rope 191 is arranged around the handle 19 within the receiving cavity. The handle 19 at the top of the bottle body 10 makes it easy for medical staff or patients to grasp when they need to move the device, thus facilitating carrying and rapid transfer, and improving the flexibility of movement. The hanging rope 191 arranged within the receiving cavity of the handle 19 allows the device to be easily suspended from hospital beds, IV stands, etc., thereby saving space, ensuring that the device is in an upright position, and ensuring a smooth drainage process.

[0063] A support plate 192 is rotatably mounted on the bottom of the bottle body 10 and has a concealed position and a supported position. In the concealed position, the support plate 192 can rotate to the bottom of the bottle body 10 and overlap with the bottom wall of the bottle body 10; in the supported position, the support plate 192 is used to support the bottle body 10. The rotatable support plate 192 can switch between the concealed position and the supported position, making it easy for the device to maintain stability in different states. When needed, the support plate 192 can be rotated to the supported position, so that the device can be stably placed on the ground, bedside table or other stable surface, increasing the flexibility and applicability of the device and avoiding the risk of liquid spillage caused by the device tipping over; when it is necessary to hang, the support plate 192 can be rotated to the concealed position, overlapping with the bottom wall of the bottle body 10, so that the support plate 192 does not obstruct the use of the hanging rope 191 and can maintain the overall simplicity of the device.

[0064] In some embodiments, such as Figure 3 and Figure 4 As shown, a positive pressure release valve 100 is also provided on the top wall of the bottle body 10. Specifically, the positive pressure release valve 100 includes a hemispherical cup-shaped air guide groove and a lightweight float ball disposed in the air guide groove. Its function is to be a device that, when excessive and unexpected positive pressure accumulates in the bottle body 10, the lightweight float ball can be lifted up to automatically release the positive pressure in the bottle body 10 to reduce patient discomfort. The structure is simple and practical.

[0065] The waterless and water-seal dual-purpose thoracic drainage device provided in this embodiment innovatively achieves safe and effective drainage without a water seal, completely eliminating the potential risk of pneumothorax caused by water seal fluid loss or backflow in traditional water-seal drainage devices. This device not only allows for direct observation of the patient's pleural cavity recovery trend but also features simple and quick operation, significantly improving the efficiency of clinical application and facilitating rapid patient recovery. Furthermore, for clinicians still accustomed to using water seals, this device can also be converted to water seal use, with clear water column fluctuations and no other operational changes, better meeting clinical needs.

[0066] The waterless and water-seal dual-purpose chest drainage device provided in this embodiment ensures absolute safety during use. Before delivery, the dry-seal valve inside the device can be installed or removed, allowing customers to achieve safe and effective drainage in both waterless and water-seal states. This fundamentally solves the potential risk of pneumothorax caused by water seal fluid loss or backflow in traditional water-seal drainage devices, greatly improving the safety of the drainage process. Furthermore, considering that some clinical medical staff are still accustomed to traditional water-seal drainage operations, the device features a flexible mode-switching function, allowing for easy conversion to water-seal mode with clearly visible water column fluctuations. Other operating procedures remain completely unchanged, perfectly compatible with existing clinical operating habits, thus better meeting the clinical needs of different medical staff and possessing wider applicability and promotional value.

[0067] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0068] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water-sealless and airtight dual chest drainage device, characterized in that, The application relates to a bottle for monitoring the leakage of chest cavity gas of a patient, comprising: a bottle body, which is internally divided into an indicating cavity, a pressure regulating cavity and at least one liquid accumulation cavity in communication with each other by a partition plate; the liquid accumulation cavity and the pressure regulating cavity are located on the left and right sides of the indicating cavity, and the indicating cavity is in communication with the liquid accumulation cavity and the pressure regulating cavity through different channels; a drainage interface is arranged on the top of the bottle body and is in communication with the liquid accumulation cavity; an aspiration interface is arranged on the top of the bottle body and is in communication with the pressure regulating cavity, and the aspiration interface is internally provided with a mounting seat for mounting a dry seal valve or a negative pressure suction connector; a water seal gas leakage indicating device is arranged at the channel between the indicating cavity and the pressure regulating cavity and is used for monitoring the leakage of chest cavity gas of a patient; a negative pressure indicator is mounted on the bottle body and is in communication with the pressure regulating cavity and is used for indicating the negative pressure value in the bottle body; a negative pressure regulating valve is mounted on the bottle body and is in communication with the pressure regulating cavity and is used for regulating the negative pressure value in the bottle body; wherein the channel between the liquid accumulation cavity and the indicating cavity is adjacent to the top wall of the bottle body, the channel between the indicating cavity and the pressure regulating cavity is adjacent to the bottom wall of the bottle body, the indicating cavity is internally provided with a floating member for observing the fluctuation of the water column in the indicating cavity, and at least a part of the bottle body is made of transparent material to allow the observation of the liquid accumulation cavity, the water seal gas leakage indicating device, the indicating cavity and the floating member.

2. The anhydrous water sealed dual chest drainage device of claim 1, wherein, The water seal gas leakage indicating device comprises an inclined plate, the inclined plate is arranged in the pressure regulating cavity and is inclined to the bottom wall of the bottle body away from the indicating cavity, and the inclined plate divides the pressure regulating cavity into a first cavity in communication with the liquid accumulation cavity and the indicating cavity; a plurality of first air holes are arranged on the inclined plate along the inclined direction of the inclined plate, the first cavity is in communication with the pressure regulating cavity through the first air holes, and when the negative pressure suction connector is mounted on the mounting seat, the height of the indicating liquid injected into the indicating cavity at least submerges the first air hole closest to the indicating cavity on the inclined plate.

3. The anhydrous water sealed dual chest drainage device of claim 2, wherein, A plurality of gradually expanding holes corresponding to the first air holes are arranged on the lower side of the inclined plate, and the hole diameter of the gradually expanding holes presents an increasing trend along the inclined direction of the inclined plate towards the bottom wall of the bottle body.

4. The anhydrous water sealed dual chest drainage device of claim 1, wherein, The pressure regulating cavity is divided into a second cavity accommodating the negative pressure indicator and the negative pressure regulating valve by a partition plate, and the negative pressure indicator is a red and retractable bellows type membrane structure which has a second air hole in communication with the external environment.

5. The anhydrous water sealed dual chest drainage device of claim 4, wherein, A conical pipe is arranged in the pressure regulating cavity and is arranged in a downward inclined manner, the conical pipe divides the pressure regulating cavity into a third cavity, and the inner diameter of the conical pipe presents a decreasing trend along the inclined direction of the conical pipe; the pressure regulating cavity is in communication with the third cavity through the conical pipe, and the aspiration interface is in communication with the third cavity.

6. The anhydrous water sealed dual chest drainage device of claim 2, wherein, The bottle body is divided into a buffer cavity by a partition plate, the liquid accumulation cavity is in communication with the indicating cavity through the buffer cavity, and the volume of the buffer cavity is greater than the volume of the indicating liquid injected into the indicating cavity.

7. The anhydrous water sealed dual chest drainage device of claim 6, wherein, A horizontally arranged communication pipe is arranged in the channel between the liquid accumulation cavity and the indicating cavity, the liquid accumulation cavity is in communication with the buffer cavity through the communication pipe, and a flow resistance valve is arranged between the buffer cavity and the indicating cavity.

8. The anhydrous water sealed dual chest drainage device of claim 1, wherein, The bottle further comprises a liquid outlet arranged on the bottle body and communicated with the liquid collection cavity, and the drainage interface, the suction interface and the liquid outlet are all connected with anti-twist corrugated pipes, free ends of the anti-twist corrugated pipes are connected with quick release joints.

9. The anhydrous water sealed dual chest drainage device of claim 1, wherein, The bottle further comprises a manual negative pressure release valve installed on the bottle body and used for releasing the positive pressure in the bottle body.

10. The anhydrous water sealed dual chest drainage device of claim 1, wherein, The bottle further comprises: A handle arranged on the top of the bottle body, and a containing cavity is formed in the surface of the handle, a hanging rope is arranged in the containing cavity and wound around the handle; A support plate rotatably installed on the bottom of the bottle body and having a hidden position and a support position, in the hidden position, the support plate can be rotated to the bottom of the bottle body and overlapped with the bottom wall of the bottle body; In the support position, the support plate is used to support the bottle body.

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