Anti-streaming three-cavity closed drainage bottle

Abstract

The invention provides an anti-streaming three-cavity closed drainage bottle. The anti-streaming three-cavity closed drainage bottle comprises a three-cavity drainage bottle body, a closed shell, a pipette, a first control switch and a second control switch. During use, the three-cavity drainage bottle is firstly installed, then the closed shell is installed above the drainage bottle, the second control switch is connected with the suction opening, the liquid suction pipe is installed in the liquid adding opening, one end of the liquid suction pipe is communicated with the liquid collecting opening, the other end of the liquid suction pipe is flush with the zero water level, and negative pressure equipment is communicated with the negative pressure connector. At the beginning, the first control switch is closed, and the second control switch is opened; when liquid mixing occurs, the first control switch is turned on, the second control switch is turned off, and the liquid is sucked into the working cavity by the liquid suction pipe under the action of negative pressure; after suction is completed, the first control switch is closed, the second control switch is opened, and liquid in the working cavity flows into the pressure regulating bottle. According to the drainage bottle, redundant liquid in the water-sealed bottle can be discharged, so that the replacement frequency of the drainage bottle is reduced, and the medical cost of a patient is reduced; the device can be directly transformed from an existing drainage bottle and is suitable for popularization and application.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an anti-cross-flow three-chamber closed drainage bottle. Background Art

[0002] Closed chest drainage is to place one end of the drainage tube into the chest cavity and connect the other end to a water seal bottle at a lower position to discharge gas or collect fluid in the chest cavity, so that the lung tissue can reopen and restore function.

[0003] Three-chamber drainage bottles are often used for closed chest drainage, which can be used to drain pleural effusion and to discharge gas. The three-chamber drainage bottle generally includes an effusion collection bottle 01, a water seal bottle 02 and a pressure regulating bottle 03, which are arranged in sequence. The effusion collection bottle 01 is used to collect effusion; the water seal bottle 02 is used to isolate the gas in the chest cavity from the atmosphere to avoid the formation of open pneumothorax; the pressure regulating bottle 03 is used to control the size of the negative pressure attraction. When installing the three-chamber drainage bottle, it is necessary to add normal saline to the water seal bottle 02 and the pressure regulating bottle 03 respectively. Specifically, use a funnel to add normal saline from the water seal bottle filling port 021 until the liquid level is flush with the 0 water level line, at which time the water seal tube 022 is submerged in the water seal bottle liquid level 002 by about 1-2 cm; use a funnel to add normal saline from the pressure regulating bottle suction port 031 until the liquid level is flush with the 12 water level line, at which time the pressure regulating tube 032 is submerged in the pressure regulating bottle liquid level 003 by about 11 cm.

[0004] The inventors have found in their daily work that some patients may cough violently due to severe pneumothorax, which may cause violent fluctuations in the liquid level in the pressure regulating bottle 03 (in severe cases, the liquid in the pressure regulating bottle may even overflow through the pressure regulating tube 032). At the same time, when the patient coughs or changes body position, the drainage bottle may shake through the connecting pipes, bed, etc. In the above process, liquid cross-flow (or cross-flow) often occurs between the pressure regulating bottle 03 and the water seal bottle 02, that is, the liquid in the pressure regulating bottle 03 often enters the water seal bottle 02 from the connecting port 023 between the pressure regulating bottle 03 and the water seal bottle 02, causing the liquid level in the pressure regulating bottle 003 to drop compared to the normal water level, while the liquid level in the water seal bottle 002 to rise compared to the normal water level (such as Figure 3As shown). At this time, the actual negative pressure in the patient's chest cavity decreases, making it difficult to discharge the gas in the chest cavity. The drop in the pressure regulating bottle liquid level 003 can be solved by timely adding liquid to the pressure regulating bottle 03, but there is no corresponding solution in clinical practice for the water seal bottle liquid level 002 exceeding the normal water level line. At present, the entire three-chamber drainage bottle is directly replaced after the water seal bottle 02 liquid level is found to have risen. Since the above-mentioned problems often occur multiple times in the same patient, the three-chamber drainage bottle needs to be replaced frequently. On the one hand, frequent replacement of the three-chamber drainage bottle will increase the patient's medical expenses, especially when the drainage bottle itself is expensive, it will increase the patient's economic burden; on the other hand, too frequent replacement of the three-chamber drainage bottle may affect the continuity and stability of the treatment. At the same time, frequent replacement of the three-chamber drainage bottle may increase the risk of accidental tube removal and introduction of external bacteria, thereby adversely affecting the patient's recovery.

[0005] Therefore, it is necessary to provide a device that can safely discharge the liquid exceeding the normal water level line from the water seal bottle in time when the liquid level in the water seal bottle exceeds the normal water level line. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the technical defect that when cross-flow occurs between the pressure regulating bottle and the water seal bottle, the three-chamber drainage bottle can only be replaced, thereby increasing the patient's medical expenses and increasing the patient's economic burden; at the same time, frequent replacement of the three-chamber drainage bottle will affect the continuity and stability of treatment, and increase the risks of accidental tube disengagement and introduction of external bacteria, so as to provide a three-chamber closed drainage bottle with anti-cross-flow function, which can safely discharge the liquid exceeding the normal water level line from the water seal bottle in time when the liquid level in the water seal bottle exceeds the normal water level line.

[0007] To this end, the present invention provides an anti-cross-flow three-chamber closed drainage bottle, comprising: The three-chamber drainage bottle includes a fluid collection bottle, a water seal bottle and a pressure regulating bottle which are arranged in sequence; A closed shell is arranged above the three-chamber drainage bottle, has a working chamber inside, a liquid discharge port is arranged at the bottom, a liquid collection port is arranged in the middle, and a negative pressure interface suitable for communicating with a negative pressure device is arranged above the liquid collection port; the liquid discharge port, the liquid collection port and the negative pressure interface are respectively communicated with the working chamber; A liquid pipette is detachably and sealedly mounted in the liquid filling port of the water seal bottle through a mounting structure, one end of which is connected to the liquid collecting port and the other end is flush with the zero water level line in the water seal bottle; A first control switch, used to control the passage between the liquid collecting port and the liquid pipette to connect or disconnect them; The second control switch is installed on the liquid discharge port and is detachably connected to the suction port of the pressure regulating bottle, and is used to control the passage between the liquid discharge port and the suction port to connect or disconnect them.

[0008] Furthermore, the liquid discharge port is arranged at an end of the bottom of the closed shell 1 away from the liquid collection port.

[0009] Furthermore, the bottom of the sealed shell is approximately in the shape of a funnel, and the drain port is located at the lowest point of the funnel-shaped structure.

[0010] Furthermore, it also includes: The baffle is fixedly arranged on the side wall of the closed shell between the liquid collecting port and the liquid discharging port and is arranged opposite to the liquid collecting port. There is a gap between the bottom of the baffle and the bottom of the closed shell.

[0011] Furthermore, the mounting structure comprises: The sealing plug is detachably and sealingly installed in the liquid adding port. The sealing plug has a through hole in the middle, and the liquid pipette is sealingly inserted in the through hole.

[0012] Furthermore, a first pipe joint is provided on the second control switch.

[0013] Furthermore, a second pipe joint is provided on the negative pressure interface.

[0014] Furthermore, the first pipe joint and the second pipe joint are both pagoda-type pipe joints.

[0015] Furthermore, the first control switch is a hydraulic valve, and the hydraulic valve is installed in series between the liquid suction pipe and the liquid collection port.

[0016] The present invention also provides a closed chest drainage device, comprising a three-chamber drainage bottle and the anti-cross-flow three-chamber closed drainage bottle as described in any one of the above items; The three-chamber drainage bottle comprises a fluid collection bottle, a water seal bottle and a pressure regulating bottle which are arranged in sequence; The sealed shell of the anti-cross-flow three-chamber closed drainage bottle is arranged above the three-chamber drainage bottle, and the second control switch of the anti-cross-flow three-chamber closed drainage bottle is connected to the suction port of the pressure regulating bottle; the suction tube of the anti-cross-flow three-chamber closed drainage bottle is sealed and installed in the liquid filling port of the water seal bottle through the installation structure, one end is connected with the liquid collecting port of the anti-cross-flow three-chamber closed drainage bottle, and the other end extends into the interior of the water seal bottle, and the end is flush with the 0 water level line in the water seal bottle.

[0017] The technical solution provided by the present invention has the following advantages: The anti-cross-flow three-chamber closed drainage bottle of the present invention comprises a three-chamber drainage bottle, a sealed shell, a pipette, a first control switch and a second control switch; the three-chamber drainage bottle comprises a fluid collection bottle, a water seal bottle and a pressure regulating bottle which are arranged in sequence; the sealed shell is arranged above the three-chamber drainage bottle, has a working chamber inside, a liquid discharge port is arranged at the bottom, a liquid collection port is arranged in the middle, and a negative pressure interface suitable for connecting with a negative pressure device is arranged above the liquid collection port; the liquid discharge port, the liquid collection port and the negative pressure interface are respectively connected to the working chamber; the pipette is detachably sealed and installed in the liquid filling port of the water seal bottle through an installation structure, one end of the pipette is connected to the liquid collection port, and the other end is flush with the 0 water level line in the water seal bottle; the first control switch is used to control the passage between the liquid collection port and the pipette to connect or disconnect them; the second control switch is installed on the liquid discharge port and is detachably connected to the suction port of the pressure regulating bottle, and is used to control the passage between the liquid discharge port and the suction port to connect or disconnect them.

[0018] When the present invention is used, the three-chamber drainage bottle is first installed according to normal steps, including connecting the pipelines between the effusion collection bottle, the water seal bottle, and the pressure regulating bottle, and injecting physiological saline into the water seal bottle and the pressure regulating bottle. After the installation is completed, the closed shell is placed above the three-chamber drainage bottle, the second control switch is connected to the suction port of the pressure regulating bottle, the pipette is sealed and installed in the liquid adding port of the water seal bottle, one end of the pipette is sealed and connected to the liquid collecting port, and the other end is flush with the 0 water level line in the water seal bottle, and the negative pressure device is connected to the negative pressure interface; in the initial state, the first control switch is made to close the passage between the pipette and the liquid collecting port, and the second control switch is made to open the passage between the discharge port and the suction port; in the process of using the negative pressure device to perform chest drainage on the patient, when the medical staff or the patient's family finds that the liquid level of the water seal bottle is higher than the normal water level line (the liquid level of the water seal bottle has submerged the other end of the pipette The first control switch opens the passage between the pipette and the liquid collecting port, and the second control switch closes the passage between the discharge port and the suction port. Under the negative pressure inside the sealed shell, the pipette absorbs the liquid that has submerged the other end into the pipette and discharges it into the working chamber of the sealed shell through the liquid collecting port. When the liquid level in the water seal bottle drops until the other end of the pipette is exposed again, the pipette no longer absorbs liquid. At this time, the medical staff can operate the control switch to close the passage between the pipette and the liquid collecting port, and the second control switch to open the passage between the discharge port and the suction port (or the negative pressure device can be closed at the same time). At this time, the liquid inside the working chamber flows into the pressure regulating bottle from the inside of the sealed shell through the discharge port, the second control switch, and the suction port of the pressure regulating bottle under the action of gravity.

[0019] The anti-cross-flow three-chamber closed drainage bottle of the present invention can discharge the excess liquid above the 0 water level line in the water seal bottle in time when cross-flow occurs between the pressure regulating bottle and the water seal bottle, thereby reducing the replacement frequency of the three-chamber drainage bottle, thereby reducing the risk of accidental tube disengagement and introduction of external bacteria due to frequent replacement of the drainage bottle, and reducing the patient's medical costs; at the same time, when discharging the excess liquid in the water seal bottle, the part of the excess liquid can be re-injected into the pressure regulating bottle through a closed pipeline, thereby reducing the chance of contact between the liquid inside the three-chamber drainage bottle and the outside world, and avoiding contamination of the inside of the three-chamber drainage bottle; and the anti-cross-flow three-chamber closed drainage bottle of the present invention can be obtained by simply modifying the existing three-chamber drainage bottle, thereby reducing the use cost, increasing the scope of application, and being suitable for clinical promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the prior art or the specific implementation manner of the present invention, the drawings used in the description of the prior art or the specific implementation manner are briefly introduced below.

[0021] Figure 1 It is a schematic diagram of the overall structure of the anti-cross-flow three-chamber closed drainage bottle of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure after the three-chamber drainage bottle is removed.

[0023] Figure 3 It is a schematic diagram of the liquid cross-talk phenomenon between the pressure regulating bottle and the water seal bottle in the prior art.

[0024] Attached figures: 002, liquid level of water seal bottle; 003, liquid level of pressure regulating bottle; 01, accumulated liquid collecting bottle; 02, water seal bottle; 021, liquid adding port; 022, water seal tube; 023, connecting port; 03, pressure regulating bottle; 031, suction port; 032, pressure regulating tube; 1, closed shell; 100, working chamber; 11, liquid discharge port; 12, liquid collecting port; 13, negative pressure interface; 14, baffle; 140, gap; 15, first pipe joint; 16, second pipe joint; 2, liquid suction tube; 3, control switch; 4, sealing plug; 41, through hole; 5, second control switch. DETAILED DESCRIPTION

[0025] In order to make those skilled in the art better understand the present solution, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the claims and description of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not limited to those steps or units clearly listed, but may also include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

[0028] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0029] This embodiment provides a three-chamber closed drainage bottle to prevent cross-flow. Figure 1As shown, it includes a three-chamber drainage bottle, a closed shell 1, a liquid suction tube 2 and a control switch 3; the three-chamber drainage bottle includes a fluid collection bottle 01, a water seal bottle 02 and a pressure regulating bottle 03 arranged in sequence; the closed shell 1 is arranged above the three-chamber drainage bottle, has a working chamber 100 inside, a liquid discharge port 11 is arranged at the bottom, a liquid collection port 12 is arranged in the middle, and a negative pressure interface 13 suitable for connecting with a negative pressure device is arranged above the liquid collection port 12; the liquid discharge port 11, the liquid collection port 12 and the negative pressure interface 13 are respectively connected to the working chamber 100; the liquid suction tube 2 It is detachably sealed and installed in the liquid filling port 021 of the water seal bottle 02 through the installation structure, one end is connected to the liquid collecting port 12, and the other end is flush with the 0 water level line in the water seal bottle 02; the first control switch 3 is used to control the passage between the liquid collecting port 12 and the liquid suction tube 2 to achieve connection or disconnection; the second control switch 5 is installed on the liquid discharge port 11 and is detachably connected to the suction port 031 of the pressure regulating bottle 03, and is used to control the passage between the liquid discharge port 11 and the suction port 031 to achieve connection or disconnection.

[0030] In this embodiment, the three-chamber drainage bottle is a product in the prior art and can be purchased directly from the market; the sealed shell 1 and the pipette 2 can both be made of medical-grade transparent plastic material, and the transparent material can facilitate medical staff to observe the conditions inside the sealed shell 1 and the pipette 2; the first control switch 3 can be a vascular clamp, a flow regulator, or a hydraulic valve installed in series between the pipette 2 and the liquid collecting port 12; the second control switch 5 can be a hydraulic valve installed on the discharge port 11. The above-mentioned vascular clamp, flow regulator, and hydraulic valve can all be purchased from existing products on the market, and this application will not go into details. When in use, first install the three-chamber drainage bottle according to normal steps, including connecting the pipelines between the effusion collection bottle 01, the water seal bottle 02, and the pressure regulating bottle 03, and injecting physiological saline into the water seal bottle 02 and the pressure regulating bottle 03. After the installation is completed, place the closed shell 1 above the three-chamber drainage bottle, connect the second control switch 5 to the suction port 031 of the pressure regulating bottle 03, seal the pipette 2 in the liquid filling port 021 of the water seal bottle 02, seal one end of the pipette 2 with the liquid collection port 12, and seal the other end. The end is flush with the 0 water level line in the water seal bottle 02, and the negative pressure device is connected to the negative pressure interface 13; in the initial state, the first control switch 3 is made to close the passage between the suction tube 2 and the liquid collecting port 12, and the second control switch 5 is made to open the passage between the discharge port 11 and the suction port 031; in the process of using the negative pressure device to drain the patient's chest cavity, when the medical staff or the patient's family finds that the liquid level of the water seal bottle 002 is higher than the normal water level line (the liquid level of the water seal bottle 002 has submerged the other end of the suction tube 2 ), indicating that liquid cross-talk may have occurred. At this time, the medical staff or the patient's family can operate the first control switch 3 to open the passage between the pipette 2 and the liquid collecting port 12, and operate the second control switch 5 to close the passage between the discharge port 11 and the suction port 031; under the action of the negative pressure inside the closed shell 1, the pipette 2 will absorb the liquid that has submerged its other end into the pipette and discharge it into the working chamber 100 of the closed shell 1 through the liquid collecting port 12; when the liquid level 002 of the water seal bottle drops until the other end of the pipette 2 is exposed again, the pipette 2 no longer absorbs liquid. At this time, the medical staff can operate the control switch 3 to close the passage between the pipette 2 and the liquid collecting port 12, and operate the second control switch 5 to open the passage between the discharge port 11 and the suction port 031 (or the negative pressure device can be closed at the same time); at this time, the liquid inside the working chamber 100 flows into the pressure regulating bottle 03 from the inside of the closed shell 1 through the discharge port 11, the second control switch 5, and the suction port 031 of the pressure regulating bottle 03 under the action of gravity.

[0031] The anti-cross-flow three-chamber closed drainage bottle of the present invention can discharge the excess liquid above the 0 water level line in the water seal bottle 02 in time when cross-flow occurs between the pressure regulating bottle 03 and the water seal bottle 02, thereby reducing the replacement frequency of the three-chamber drainage bottle, thereby reducing the risk of accidental tube disengagement and introduction of external bacteria due to frequent replacement of the drainage bottle, and reducing the patient's medical costs; at the same time, when discharging the excess liquid in the water seal bottle 02, this part of the excess liquid can be re-injected into the pressure regulating bottle 03 through a closed pipeline, thereby reducing the chance of contact between the liquid inside the three-chamber drainage bottle and the outside world, and avoiding contamination of the inside of the three-chamber drainage bottle; and the anti-cross-flow three-chamber closed drainage bottle of the present invention can be obtained by simply modifying the existing three-chamber drainage bottle, thereby reducing the cost of use, increasing the scope of application, and being suitable for clinical promotion.

[0032] The anti-cross-flow three-chamber closed drainage bottle of this embodiment is further as follows: Figure 2 As shown, the liquid discharge port 11 is arranged at one end of the bottom of the closed shell 1 away from the liquid collection port 12 .

[0033] In this embodiment, the positions of the liquid discharge port 11 and the liquid collection port 12 are kept away from each other, which can ensure that the liquid discharged from the liquid collection port 12 flows along the bottom inner wall of the closed shell 1 to the liquid discharge port 11, avoiding the generation of bubbles after the liquid directly enters the liquid discharge port 11, thereby reducing the subsequent liquid discharge rate.

[0034] The anti-cross-flow three-chamber closed drainage bottle of this embodiment is further as follows: Figure 2 As shown, the bottom of the sealed shell 1 is approximately in a funnel-shaped structure, and the drain port 11 is located at the lowest point of the funnel-shaped structure.

[0035] In this embodiment, the funnel-shaped structure enables the liquid entering the working chamber 100 to flow quickly to the liquid discharge port 11, thereby reducing the accumulation of liquid at the bottom of the closed shell 1 and improving the efficiency of discharging the liquid into the pressure regulating bottle 03. The anti-cross-flow three-chamber closed drainage bottle of this embodiment is further as follows: Figure 2 As shown, it also includes a baffle 14, which is fixedly arranged on the side wall of the closed shell 1 between the liquid collecting port 12 and the liquid discharge port 11 and is arranged opposite to the liquid collecting port 12. A gap 140 is formed between the bottom of the baffle 14 and the bottom of the closed shell 1.

[0036] In this embodiment, the baffle plate 14 can block the liquid discharged from the liquid collecting port 12. When the liquid is discharged from the liquid collecting port 12, if the liquid pressure is large and the flow rate is fast, it will first hit the baffle plate 14, then flow down along the baffle plate 14 to the bottom of the closed shell 1, and finally flow to the liquid discharge port 11 through the gap 140, and enter the pressure regulating bottle 03 through the liquid discharge port 11. The baffle plate 14 can buffer the pressure of the liquid discharged from the liquid collecting port 12, so that the part of the liquid can smoothly flow to the liquid discharge port 11 through the bottom of the closed shell 1, avoid the generation of bubbles after the liquid directly enters the liquid discharge port 11, and reduce the subsequent liquid discharge rate.

[0037] The anti-cross-flow three-chamber closed drainage bottle of this embodiment is further as follows: Figure 2 As shown, the installation structure includes a sealing plug 4, which is detachably and sealingly installed in the liquid filling port 021, and a through hole 41 is provided in the middle of the sealing plug 4, and the liquid pipette 2 is sealed and penetrated in the through hole 41.

[0038] In this embodiment, the sealing plug 4 can be made of medical grade rubber or silicone, and the sealing plug 4 is in extrusion contact with the liquid adding port 021 and the liquid pipette 2, and the sealing plug 4 and the liquid pipette 2 can be quickly disassembled and assembled by plugging and unplugging. There is friction resistance between the outer wall of the sealing plug 4 and the inner wall of the liquid adding port 021, and between the inner wall of the through hole 41 and the outer wall of the liquid pipette 2, so that the liquid pipette 2 can be firmly fixed in the liquid adding port 021.

[0039] The anti-cross-flow three-chamber closed drainage bottle of this embodiment is further as follows: Figure 2 As shown, the second control switch 5 is provided with a first pipe joint 15 .

[0040] The anti-cross-flow three-chamber closed drainage bottle of this embodiment is further as follows: Figure 2 As shown, a second pipe joint 16 is provided on the negative pressure interface 13 .

[0041] The anti-cross-flow three-chamber closed drainage bottle of this embodiment is further as follows: Figure 2 As shown, the first pipe joint 15 and the second pipe joint 16 are both pagoda-type pipe joints.

[0042] In this embodiment, the first pipe joint 15 and the second pipe joint 16 are both pagoda-type pipe joints, which can be adapted to the pipeline used by the existing three-chamber drainage bottle, thereby improving the scope of application of the device and reducing the cost of use. Specifically, the pagoda-type pipe joint on the second control switch 5 matches the outer diameter of the joint on the suction port 031 of the three-chamber drainage bottle, and the two can be connected by a hose, and the interface between the hose and the pagoda-type pipe joint and the joint on the suction port 031 of the three-chamber drainage bottle is well sealed; the pagoda-type pipe joint on the negative pressure interface 13 matches the outer diameter of the joint on the suction port 031 of the three-chamber drainage bottle, so that the hose originally connected to the joint on the suction port 031 of the three-chamber drainage bottle can be directly matched and connected with the pagoda-type pipe joint on the negative pressure interface 13, thereby improving the universality of the device. Alternatively, the first pipe joint 15 and the second pipe joint 16 can also both adopt the same structure as the joint on the suction port 031 of the three-chamber drainage bottle.

[0043] The anti-cross-flow three-chamber closed drainage bottle of this embodiment has the following working principle: First, install the three-chamber drainage bottle according to normal steps, including connecting the pipelines between the effusion collection bottle 01, the water seal bottle 02, and the pressure regulating bottle 03, and injecting physiological saline into the water seal bottle 02 and the pressure regulating bottle 03; After the installation is completed, the sealed shell 1 is placed above the three-chamber drainage bottle, the second control switch 5 is connected to the suction port 031 of the pressure regulating bottle 03 through the first pipe joint 15 and the hose, the pipette 2 is sealed and installed in the liquid filling port 021 of the water seal bottle 02 through the sealing plug 4, one end of the pipette 2 is connected to the liquid collecting port 12 through the first control switch 3, and the other end is flush with the 0 water level line in the water seal bottle 02, and the pipeline of the negative pressure equipment is connected to the second pipe joint 16 on the negative pressure interface 13; In the initial state, the first control switch 3 is made to close the passage between the pipette 2 and the liquid collecting port 12, and the second control switch 5 is made to open the passage between the discharge port 11 and the suction port 031; in the process of using the negative pressure equipment to perform chest drainage on the patient, when the medical staff or the patient's family finds that the liquid level 002 of the water seal bottle is higher than the normal water level (the liquid level 002 of the water seal bottle has submerged the other end of the pipette 2), it indicates that liquid cross-talk may have occurred. At this time, the medical staff or the patient's family can operate the first control switch 3 to open the passage between the pipette 2 and the liquid collecting port 12, and operate the second control switch 5 to close the passage between the discharge port 11 and the suction port 031; under the action of the negative pressure inside the closed shell 1, the pipette 2 will absorb the liquid that submerges the other end into the pipette and discharge it into the working chamber 100 of the closed shell 1 through the liquid collecting port 12; When the liquid level in the water seal bottle 002 drops until the other end of the pipette 2 is exposed again, the pipette 2 no longer absorbs liquid. At this time, the medical staff can operate the control switch 3 to close the passage between the pipette 2 and the liquid collecting port 12, and at the same time operate the second control switch 5 to open the passage between the discharge port 11 and the suction port 031 (or the negative pressure device can be closed at the same time); at this time, the liquid inside the working chamber 100 flows into the pressure regulating bottle 03 from the inside of the sealed shell 1 through the discharge port 11, the second control switch 5, and the suction port 031 of the pressure regulating bottle 03 under the action of gravity.

[0044] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of this innovative technical solution.

Claims

1. A three-chamber closed drainage bottle with anti-cross-flow function, characterized in that: include: A three-chamber drainage bottle, comprising an effusion collection bottle (01), a water seal bottle (02) and a pressure regulating bottle (03) which are arranged in sequence; A closed housing (1) is arranged above the three-chamber drainage bottle, has a working chamber (100) inside, is provided with a liquid discharge port (11) at the bottom, is provided with a liquid collection port (12) in the middle, and is provided with a negative pressure interface (13) suitable for communicating with a negative pressure device above the liquid collection port (12); the liquid discharge port (11), the liquid collection port (12) and the negative pressure interface (13) are respectively communicated with the working chamber (100); A liquid pipette (2) is detachably and sealedly mounted in the liquid filling port (021) of the water seal bottle (02) via a mounting structure, one end of which is connected to the liquid collecting port (12) and the other end of which is flush with the zero water level line in the water seal bottle (02); A first control switch (3) for controlling the passage between the liquid collecting port (12) and the liquid pipette (2) to achieve connection or disconnection; The second control switch (5) is mounted on the liquid discharge port (11) and is detachably connected to the suction port (031) of the pressure regulating bottle (03), and is used to control the passage between the liquid discharge port (11) and the suction port (031) to achieve connection or disconnection.

2. The anti-cross-flow three-chamber closed drainage bottle according to claim 1, characterized in that: The liquid discharge port (11) is arranged at an end of the bottom of the sealed shell (1) away from the liquid collection port (12).

3. The anti-cross-flow three-chamber closed drainage bottle according to claim 1, characterized in that: The bottom of the sealed shell (1) is approximately in the form of a funnel-shaped structure, and the liquid discharge port (11) is located at the lowest point of the funnel-shaped structure.

4. The anti-cross-flow three-chamber closed drainage bottle according to claim 3, characterized in that: Also includes: A baffle plate (14) is fixedly arranged on a side wall of the sealed shell (1) between the liquid collecting port (12) and the liquid discharging port (11), and is arranged opposite to the liquid collecting port (12); a gap (140) is formed between the bottom of the baffle plate (14) and the bottom of the sealed shell (1).

5. The anti-cross-flow three-chamber closed drainage bottle according to claim 1, characterized in that: The mounting structure comprises: The sealing plug (4) is detachably and sealingly mounted in the liquid filling port (021); a through hole (41) is provided in the middle of the sealing plug (4); and the liquid pipette (2) is sealingly inserted into the through hole (41).

6. The anti-cross-flow three-chamber closed drainage bottle according to claim 1, characterized in that: The second control switch (5) is provided with a first pipe joint (15).

7. The anti-cross-flow three-chamber closed drainage bottle according to claim 1, characterized in that: The negative pressure interface (13) is provided with a second pipe joint (16).

8. The anti-cross-flow three-chamber closed drainage bottle according to claim 1, characterized in that: The first pipe joint (15) and the second pipe joint (16) are both pagoda-type pipe joints.

9. The anti-cross-flow three-chamber closed drainage bottle according to claim 1, characterized in that: The first control switch (3) is a hydraulic valve, and the hydraulic valve is installed in series between the liquid suction pipe (2) and the liquid collection port (12).

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