Safe and effective water seal bottle for chest drainage
By designing a closed-loop pleural drainage water-seal bottle with a reservoir, negative pressure display, and float structure, the problems of complexity and time consumption in the absence of a negative pressure source are solved, enabling rapid and safe drainage of pleural effusion and gas, suitable for various hospital environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 盛沛升
- Filing Date
- 2020-08-28
- Publication Date
- 2026-05-12
AI Technical Summary
Existing closed chest drainage devices require multiple adjustments to the fluid volume when used without a negative pressure source, which is time-consuming and laborious. They also pose risks of lung damage due to excessive negative pressure, infection from fluid backflow, inconvenient flow monitoring, and complex structure, making them unsuitable for emergency use.
A safe closed-loop thoracic drainage water-seal bottle was designed, comprising a liquid storage chamber, a negative pressure indicator, a water seal chamber, a drainage flow control valve, and a negative pressure regulating valve. It adopts a float and one-way valve structure to achieve negative pressure protection, flow control, and automatic regulation, reducing preparation steps before use and making it suitable for locations without negative pressure equipment.
It enables rapid and safe drainage in areas without negative pressure equipment, prevents backflow of accumulated fluid, simplifies operation, saves time, provides stable negative pressure and flow control, reduces the risk of equipment failure, and is suitable for makeshift hospitals and field hospitals.
Smart Images
Figure CN111888547B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical devices, and more particularly to a safe and effective closed thoracic drainage water-seal bottle suitable for the treatment of patients with pneumothorax, pleural effusion, or those requiring closed drainage after thoracic surgery; this invention can be used in situations without a negative pressure source, such as makeshift hospitals and field hospitals. Background Technology
[0002] If there are lesions in the chest cavity and lungs, gas or fluid will accumulate in the chest cavity, causing a decrease in lung capacity and difficulty breathing. Closed chest drainage uses negative pressure to suction out the gas and fluid caused by the lesion, restoring the chest cavity to normal and allowing for recovery. Drainage devices, commonly known as drainage bottles, are typically single-chambered (only a reservoir chamber), double-chambered (a reservoir chamber plus a water seal chamber), or triple-chambered (a reservoir chamber, a water seal chamber, and a display chamber). Currently, most drainage bottles are directly connected to a negative pressure source when draining pleural effusion and gas, which can impair respiratory function.
[0003] Chinese patent application number: 201920278624.8. Patent title: A closed thoracic drainage device. Before use, appropriate fluid must be injected into the safety chamber and negative pressure chamber. Multiple adjustments are required to reach the necessary fluid volume, and the infusion volume is relatively large, time-consuming, and wasteful of fluid. For patients urgently needing drainage, time is extremely precious. This patent uses a pressure regulating tube to alleviate pressure. Regarding protecting the lungs from injury, this patent prevents injury by installing a one-way valve connection between the thoracic drainage tube and the drainage extension tube. When the lungs generate negative pressure during inhalation, the effusion drained from the specimen cavity or the drainage extension tube connected to the specimen cavity can flow back into the patient's pleural cavity, causing lung infection. Although installing a one-way valve between the pleural drainage tube and the drainage extension tube can prevent effusion from flowing back into the pleural cavity, the disadvantages are also obvious. If the patient has a blood clot, it will cause blockage of the one-way valve, rendering the water seal bottle ineffective. Similarly, the medical micro-flow regulator on the drainage tube used in this patent to adjust the effusion flow is also prone to blockage when encountering blood clots; at the same time, observing the flow rate is very inconvenient.
[0004] The inventor of this patent applied for Chinese patent number 201320560706.4, patent title: "Safety-type Closed Chest Drainage Water-seal Bottle." This patent largely solves the technical problem of lung damage caused by excessive negative pressure. However, when the negative pressure is too high, it can only be manually handled using a negative pressure release valve. But opening the negative pressure release valve allows the atmosphere to connect with the chest cavity, potentially causing infection and damage. Furthermore, before using the water-seal bottle, appropriate amounts of liquid need to be injected into the negative pressure indicator and the water-seal cavity, and the required volume needs to be adjusted multiple times. This is very time-consuming and requires a large amount of liquid, which is inconvenient for patients urgently needing drainage. Additionally, when the negative pressure indicator reads the negative pressure value, the water column level in the U-shaped tube rises as the pressure decreases, which is the opposite of what is expected, resulting in an unsatisfactory reading.
[0005] Most existing water-seal bottles use a single drainage tube, with gas and liquid sharing the same tube. Adjusting and observing the flow rate and regulating the negative pressure are inconvenient; they lack automatic negative pressure protection or require manual operation, making the process complex. Most water-seal bottles can only be used in locations with negative pressure equipment. Furthermore, if the connecting tube between the water-seal bottle and the negative pressure equipment becomes detached, the water-seal bottle lacks a function to protect the patient, potentially causing backflow and lung infection.
[0006] Therefore, the inventors believed that there was an urgent need for a water seal bottle that could be used by patients in emergencies, without the need to inject liquid into the water seal chamber or negative pressure observation chamber before use, requiring a small amount of liquid, with powerful water seal bottle treatment function, convenient operation, convenient observation and adjustment of flow rate and negative pressure, convenient movement and transportation, good protection function to prevent liquid backflow, intelligent and reasonable structural design, and could be used in places where negative pressure suction is required but there is no negative pressure equipment. Summary of the Invention
[0007] The purpose of this invention is to address the shortcomings of the prior art by providing a safe and effective closed-loop thoracic drainage water-seal bottle that features excellent negative pressure protection, prevents waste liquid backflow, has an intelligent and reasonable structural design, and can be used in locations requiring negative pressure suction but lacking negative pressure equipment. It is suitable for emergency use, eliminating the need for medical personnel to inject liquid into the water-seal cavity and negative pressure observation cavity, saving preparation time. It is also lightweight, has strong treatment capabilities, a display window for easy observation and flow rate adjustment, convenient negative pressure adjustment, and is easy to move. To achieve the above objectives, this invention adopts the following technical solution:
[0008] A safe closed-type chest drainage water-seal bottle includes a shell, a water-seal bottle mounted on the shell, a handle, and a hook. The water-seal bottle includes a storage chamber, a negative pressure indicator, a water-seal chamber, a drainage flow control valve, a negative pressure regulating valve, and a negative pressure generator. The negative pressure indicator includes a left tube and a right tube. The top of the storage chamber is sealed to the top of the right tube of the negative pressure indicator via a first connecting tube. The middle right side of the negative pressure indicator is connected to the water-seal chamber. The top of the left tube of the negative pressure indicator is sealed and protected to a second connecting tube, which is open to the atmosphere. The right and left tubes of the pressure display are connected at the bottom to form a U-shaped pipeline; the top of the liquid storage chamber is equipped with a pleural effusion drainage tube and a pleural gas drainage tube, which extend upwards through the outer shell respectively; the top of the water seal chamber is connected to a drainage flow control valve via a connecting pipe, the drainage flow control valve is connected to a negative pressure regulating valve, and the negative pressure regulating valve is connected to a negative pressure generator; the pipe opening at the top of the liquid storage chamber connected to the first connecting pipe is equipped with a first float, and a float rod positioned at the center of the first float passes vertically upwards through the first connecting pipe and is fixed to the outer shell; the left tube of the negative pressure display... A second float is installed inside the top pipe opening of the negative pressure display. A float rod positioned at the center of the second float vertically upwards through the second connecting pipe and the outer casing, and is fixed to the outer casing by a fastener. A third float is installed inside the upper right pipe opening of the negative pressure display. A float rod positioned at the center of the third float vertically upwards through the first connecting pipe and the outer casing, and is fixed to the outer casing by a fastener. A backflow prevention check valve is installed on the first connecting pipe. The negative pressure display and the water seal chamber contain a suitable amount of liquid. When there is no negative pressure, the liquid level is higher than the negative pressure level. The height of the pipe opening in the middle right side of the display is connected to the water seal cavity; the left pipe is marked with a scale, the maximum value of the scale at the upper end of the left pipe is zero (liquid level in the water seal cavity), and it gradually decreases downwards. The scale at the bottom end of the U-shaped pipe of the negative pressure display is the lowest negative pressure; the water seal cavity is provided with a hollow inclined pipe with several vent holes evenly arranged at the top. The bottom of the inclined pipe is open. The inclined pipe is connected to the water seal cavity with the left side higher than the right side. The bottom periphery of the inclined pipe is sealed to the water seal cavity. The inclined pipe is located below the liquid surface, and the vent hole at the upper end of the inclined pipe is lower than the liquid level in the water seal cavity.
[0009] The water seal chamber is positioned in the upper-middle part of the water seal bottle height, thus reducing the amount of water used during use. Furthermore, the design incorporates a shut-off float (closing both the second and third floats) and an anti-backflow check valve, allowing for pre-filling with water at the factory. This eliminates the need to add liquid to the water seal chamber, negative pressure indicator (negative pressure observation chamber), or inclined tube (drainage flow observation chamber) during use, and includes an automatic over-negative pressure protection function. This eliminates the need for doctors, nurses, or family members to add water before use. This safe closed chest drainage water seal bottle uses a negative pressure regulating valve to adjust the negative pressure value to meet the doctor's requirements for patient use. While adjusting the negative pressure to change the flow rate is possible with water seal bottles lacking flow control, this requires doctors to repeatedly adjust the negative pressure during patient use, which is inconvenient. This safe closed chest drainage system addresses these issues. The water-seal bottle is equipped with both a negative pressure control valve and a drainage flow control valve, allowing patients to obtain stable negative pressure and appropriate flow. When using potential energy, i.e., placing the water-seal bottle below the patient's chest cavity for natural drainage, the drainage flow control valve can also control the drainage speed. Equipping the drainage flow control valve also avoids the risk of drainage tube blockage caused by thrombosis when using a clamp to adjust the flow in the drainage tube. For safety reasons, this safe closed chest drainage water-seal bottle has a first float (overflow prevention float) at the pipe opening connecting the first connecting tube at the top of the reservoir to ensure that pleural waste fluid flows into the water-seal cavity. Similarly, for safety reasons, this patent has a second float (overflow prevention float) and a third float (overflow prevention float) in the water-seal cavity pipe to prevent the water-seal cavity liquid from flowing into the reservoir cavity due to the loss of pressure from the negative pressure source. At the same time, an anti-backflow one-way valve is installed on the first connecting tube to further prevent backflow and avoid chest cavity infection.
[0010] Preferably, the bottom side wall of the liquid storage chamber is provided with a liquid extraction port for testing, and the outer shell corresponding to the liquid extraction port is provided with a liquid extraction hole. The liquid extraction port is provided with sealing silicone rubber for sampling and testing. The bottom of the liquid storage chamber is equipped with a waste liquid discharge valve, and the outer shell corresponding to the waste liquid discharge valve is provided with a waste liquid discharge hole, which can discharge waste liquid and is conducive to environmental protection.
[0011] Preferably, the outer shell is also provided with several perforations for pleural effusion drainage tubes (the thicker drainage tube interface is used for pleural effusion drainage), pleural gas drainage tubes (the thinner drainage tube interface is used for pleural gas drainage), float rods positioned at the center of the first float, float rods positioned at the center of the second float, float rods positioned at the center of the third float, the suction tube of the negative pressure generator, as well as the drainage flow control valve and the negative pressure regulating valve, to pass through and be installed and fixed. The outer shell is provided with dual drainage tube interfaces, the thicker drainage tube interface is used for pleural effusion drainage, and the thinner drainage tube interface is used for pleural gas drainage. The doctor can also decide to choose the thicker or thinner interface, or choose one and close the other.
[0012] Preferably, the first connecting pipe has two float rod through holes, which are respectively used to mate the center positioning float rod of the first float and the center positioning float rod of the third float. The float rods of the first and third floats are respectively sealed and movably connected to the corresponding float rod through holes on the first connecting pipe. The floats can move up and down under the positioning of the float rods. When the first float is closed upwards, it closes the channel between the first connecting pipe and the liquid storage chamber. When the third float is closed upwards, it closes the channel between the first connecting pipe and the negative pressure airflow, preventing liquid from flowing through the liquid storage chamber, the display chamber, and the water seal chamber.
[0013] Preferably, the surfaces of the first, second, and third floats are all provided with a rubber sealing layer. The float rods positioned at the center of the first, second, and third floats are all equipped with float rod caps. The outer diameter of the float rod cap is larger than the diameter of the corresponding perforation on the outer shell. The float rod cap corresponding to the float rod positioned at the center of the first float is fixed to the outer shell. The float rod cap corresponding to the float rod positioned at the center of the second float has an axial through hole. The through hole communicates with the second connecting pipe, allowing the second connecting pipe to be connected to the atmosphere.
[0014] Preferably, the fixing member is an axially hollow elastic cylinder, and the vertical sidewall of the elastic cylinder is provided with a groove.
[0015] Preferably, the elastic cylinder is made of silicone rubber; the liquid storage chamber, negative pressure display, first connecting pipe, second connecting pipe, and outer shell are all made of transparent material.
[0016] Preferably, the negative pressure display includes a left tube, an upper right tube, and a lower right tube, with the upper right tube and the lower right tube connected by a water seal cavity. The water seal cavity has an inner cavity and an outer cavity, with the inner cavity located within the outer cavity. The inner cavity and the outer cavity are only connected at their tops, and the liquid level is higher than the top of the inner cavity. An inclined tube is provided within the inner cavity, dividing the inner cavity into upper and lower parts. The bottom periphery of the inclined tube is sealed to the inner wall of the inner cavity. The inclined tube is located below the liquid level, and its bottom opening is semi-circular at the upper left inner side. The top of the liquid storage cavity is connected to the top of the upper right tube via a first connecting tube. The bottom ends of the upper right tube and the top ends of the lower right tube are both located within the negative pressure display. The right side of the display is connected to the inner and outer cavities of the water seal chamber. The bottom surface of the inner cavity is a slope, and the lowest point of the slope is where it connects to the lower right tube, which is higher than or equal to the highest point where the lower right tube connects to the water seal chamber. The top of the left tube (the first connecting tube is not connected to the left tube) is sealed to the second connecting tube and connected to the atmosphere. The upper end of the left tube is equipped with a second float, and the upper end of the upper right tube is equipped with a third float. The left tube is marked with a scale, with the maximum value of the upper scale being zero (water seal chamber liquid level), gradually decreasing downwards. The scale value at the bottom of the U-shaped tube of the negative pressure display is the minimum negative pressure value. The liquid is pure water or physiological saline.
[0017] Preferably, the negative pressure display includes a left tube and a right tube; the top of the liquid storage chamber is connected to the top of the right tube via a first connecting tube, the middle of the right tube is connected to the water seal chamber, the top of the left tube is sealed to the atmosphere via a second connecting tube through an isolating first connecting tube, the upper end of the left tube is provided with a second float, and the upper end of the right tube is provided with a third float; the inclined tube divides the water seal chamber into upper and lower parts, the bottom periphery of the inclined tube is sealed to the inner wall of the water seal chamber, the inclined tube is located below the liquid surface, the bottom opening of the inclined tube is semi-circular on the upper left inner side, the left tube is provided with a scale, the maximum value of the scale at the upper end of the left tube is zero, and it gradually decreases downwards, the scale value at the U-shaped bottom end of the negative pressure display is the minimum negative pressure value, and the liquid is pure water or physiological saline.
[0018] Preferably, the negative pressure generator is equipped with a power supply battery; the battery can be a lithium battery, dry cell battery, etc.
[0019] Preferably, the height between the liquid surface and the U-shaped bottom of the negative pressure display when the liquid is in a non-negative pressure state is the pressure limiting water level height H, and the pressure limiting water level height H is preferably less than 20 cm.
[0020] Preferably, the pressure-limiting water level H is 18-20 cm.
[0021] Preferably, the liquid storage chamber 21, the negative pressure display 22, the first connecting pipe 51, the second connecting pipe 52, and the outer shell 1 are all made of transparent material for easy observation.
[0022] The beneficial effects of this invention are as follows:
[0023] 1. The dual drainage system, consisting of a pleural effusion drainage tube and a pleural gas drainage tube, allows for effective extraction of pleural effusion and gas as prescribed by the doctor when the negative pressure generator generates negative pressure, thus restoring normal pleural function and facilitating patient recovery.
[0024] 2. The structure of the negative pressure display, water seal chamber, and negative pressure generator can be used in any type of hospital, including general hospitals, field hospitals, and makeshift hospitals, even in places without negative pressure source equipment. It does not require liquid addition or adjustment before use, saving time and giving patients more time in emergency situations, making it highly practical.
[0025] 3. The structural design of the negative pressure display and water seal chamber provides excellent negative pressure protection. When the negative pressure setting is too high, it can automatically protect against damage to the chest cavity or lungs caused by excessive negative pressure. It also ensures that when reading the negative pressure value, the liquid column in the left tube faces downward, making the negative pressure reading more accurate and consistent with reading habits.
[0026] 4. The structure design of the reservoir, negative pressure display, first connecting pipe, first float, second float, third float and first connecting pipe is equipped with one-way valves, which can effectively prevent the flow of gas and liquid to achieve dynamic protection. Even when the negative pressure generator fails, it can prevent sudden pressure changes in the reservoir and the patient's pleural cavity, and prevent damage to the patient's pleural cavity.
[0027] 5. The design of the inclined tube and inclined surface in the water seal cavity facilitates the observation of the drainage flow rate and assists medical staff in observing and adjusting the drainage flow rate. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;
[0029] Figure 2 This is a schematic diagram of the water seal bottle structure according to Embodiment 1 of the present invention;
[0030] Figure 3 A top-view enlarged structural schematic diagram of the elastic cylinder of the present invention;
[0031] Figure 4 This is a schematic diagram of the structure in use according to Embodiment 1 of the present invention. Figure 1 ;
[0032] Figure 5 This is a schematic diagram of the structure in use according to Embodiment 1 of the present invention. Figure 2 ;
[0033] Figure 6 This is a schematic diagram of the water seal bottle structure according to Embodiment 2 of the present invention;
[0034] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the present invention;
[0035] Figure 8 This is a schematic diagram of the structure in use according to Embodiment 2 of the present invention. Figure 1 ;
[0036] Figure 9 This is a schematic diagram of the structure in use according to Embodiment 2 of the present invention. Figure 2 ;
[0037] Figure 10 This is an equivalent schematic diagram of the water-sealed bottle in Embodiment 1 of the present invention;
[0038] Figure 11 This is an equivalent schematic diagram of the water-sealed bottle in Embodiment 2 of the present invention;
[0039] Figure 12 This is a schematic diagram of the inclined tube structure of the present invention;
[0040] Figure 13 This is a magnified structural diagram of the hook from the front. Detailed Implementation
[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.
[0042] The negative pressure protection value in this embodiment is set to -20 cm water column (in practice, medical staff will select the water seal bottle device corresponding to the required negative pressure protection value according to the patient's actual needs); the arrows in the figure indicate the direction of gas flow.
[0043] Example 1
[0044] See Figure 1-5 , Figure 12 , Figure 13A safe closed-type chest drainage water-seal bottle includes an outer shell 1, a water-seal bottle 2 mounted on the outer shell 1, a handle 4, and a hook 14. The hook 14 is hinged to the outer side wall of the outer shell and can rotate circumferentially along the outer side wall. The water-seal bottle 2 includes a liquid storage chamber 21, a negative pressure indicator 22, a water seal chamber 23, a drainage flow control valve 24, a negative pressure regulating valve 25, and a negative pressure generator 3. The water seal chamber 23 has an inner cavity 234 and an outer cavity 233. The inner cavity 234 is located inside the outer cavity 233, and the inner cavity 234 and the outer cavity 233 communicate only at the top. The negative pressure indicator 22 includes a left tube 221, an upper right tube 223, and a lower right tube 224. The top end of the liquid storage chamber 21 is connected to the top end of the upper right tube 223 through a first connecting tube 51, and the bottom end of the upper right tube 223 is connected to the upper right tube 223. The top of the lower right tube 224 is located at the middle right side of the negative pressure display 22 and is connected to the inner cavity 234 and outer cavity 233 of the water seal cavity 23, respectively. The bottom surface of the inner cavity 234 is a slope 232. The point where the slope 232 connects to the lower right tube 224 is the lowest point of the slope and is higher than or equal to the highest point where the lower right tube 224 connects to the water seal cavity. The top of the left tube 221 is connected to the atmosphere via a second connecting tube 52 through a sealed protection. The top of the liquid storage cavity 21 is provided with a pleural effusion drainage tube 61 (large diameter tube) and a pleural gas drainage tube 62 (small diameter tube), which extend upward through the outer shell 1, respectively. The top connecting tube of the water seal cavity 23 is connected to the drainage flow control valve 24. The drainage flow control valve 24 is connected to the negative pressure regulating valve 25, and the negative pressure regulating valve 25 is connected to the negative pressure generator. 3; A first float 7 is provided at the pipe opening of the top of the storage chamber 21, which is connected to the first connecting pipe 51. The center positioning float 71 of the first float passes vertically upward through the first connecting pipe 51 and is fixed to the outer shell 1; A second float 8 is provided inside the upper end of the left pipe 221. The center positioning float 81 of the second float passes vertically upward through the second connecting pipe 52 and the outer shell 1. The elastic cylinder 10 is fitted onto the center positioning float 81 of the second float and fixed to the outer shell 1 by the slot 101 on the vertical side wall of the elastic cylinder. The elastic cylinder 10 is fitted onto the second float 81 and fixed to the outer shell 1; A third float 9 is provided inside the pipe opening at the upper end of the right upper pipe 223. The center positioning float 91 of the third float passes vertically upward through the first connecting pipe 51 and the outer shell 1, and similarly... A flexible cylinder 10 made of silicone rubber is fixed to the outer shell 1. A backflow prevention check valve 11 is installed on the first connecting pipe 51. The negative pressure display 22 and the water seal cavity 23 are filled with pure water. When there is no negative pressure, the liquid level is higher than the height of the water seal cavity where the right pipe is connected. The inclined tube 231 (which serves as a display window for observing the gas) is immersed in the liquid level in the water seal cavity 23. A hollow inclined tube 231 with several equidistant exhaust holes 2311 is provided in the inner cavity 234 below the liquid level. The bottom of the inclined tube 231 has an opening 2312. The inclined tube 231 is connected to the water seal cavity 23 with the left side higher than the right side. The bottom opening 2312 of the inclined tube 231 is semi-circular on the upper left inner side. The inner wall of the inner cavity 234 at the bottom periphery of the inclined tube 231 is sealed.The left tube 221 is graduated. The maximum value of the upper end of the left tube 221 is zero (liquid level in the water seal chamber), gradually decreasing downwards. The lowest negative value is the graduation at the bottom of the U-shaped tube of the negative pressure display 22.
[0045] The liquid storage chamber 21, the negative pressure display 22, the first connecting pipe 51, and the second connecting pipe 52 are all made of transparent hot-melt hard plastic. The liquid storage chamber 21 is vertically divided into two parts. When the first float 7 and the float rod 71 positioned at the center of the first float are placed into the top of the liquid storage chamber 21, the float rod 71 positioned at the center of the first float passes through the first connecting pipe 51 and the outer shell 1 and is fixed to the outer shell 1, the two parts of the liquid storage chamber 21 are formed by microwave welding (this is the prior art). Similarly, the negative pressure display 22 is also divided into two parts from top to bottom. The installation methods of the second float 8 and the third float 9 are the same as above and will not be described again.
[0046] The outer shell 1 is also provided with several perforations for the pleural effusion drainage tube 61, the pleural gas drainage tube 62, the float 71, the float 81, the float 91 positioned at the center of the first float, the exhaust pipe of the negative pressure generator, the drainage flow control valve 24, and the negative pressure regulating valve 25 to pass through and be installed and fixed. The float 71, the float 81, and the float 91 positioned at the center of the first float are equipped with float caps 15. The outer diameter of the float caps 15 is larger than the diameter of the corresponding perforations on the outer shell. The float caps 15 corresponding to the floats positioned at the center of the first float are fixed to the outer shell 1. The float caps 15 corresponding to the floats positioned at the center of the second float are provided with through holes 151 in the axial direction.
[0047] like Figure 1-2 As shown, the bottom side wall of the liquid storage chamber 21 is provided with a liquid extraction port 211 for detection, and the outer shell 1 corresponding to the liquid extraction port 211 is provided with a liquid extraction hole 26. The liquid extraction port 211 is provided with a sealing rubber. The bottom end of the liquid storage chamber 21 is equipped with a waste liquid discharge valve 12, and the outer shell corresponding to the waste liquid discharge valve 12 is provided with a waste liquid discharge hole 13. When the safety-type closed thoracic drainage water seal bottle is used, the accumulated liquid in the liquid storage chamber can be discharged and cleaned through the waste liquid discharge valve 12.
[0048] like Figure 1-5 As shown, the first connecting pipe 51 has two float rod through holes, which are respectively used to connect the float rod 71 and the float rod 91 positioned at the center of the first float ball. The float rod 71 and the float rod 91 positioned at the center of the third float ball are sealed with the corresponding float rod through holes on the first connecting pipe 51. The float rod 71 and the float rod 91 positioned at the center of the first float ball can move up and down along the vertical direction of the float rod through hole. The first float ball 7 and the third float ball 9 are positioned and connected up and down on the corresponding float rod. When the float ball moves upward, the negative pressure airflow of the first connecting pipe is closed to prevent waste liquid from flowing into the display cavity and the water seal cavity.
[0049] like Figure 10 As shown, Figure 10 The water-sealed bottle in the middle is, Figure 1-2 Equivalent schematic diagram of the water-sealed bottle, showing the water consumption ratio of this patent. Figure 10 The water consumption is significantly reduced, the overall weight of the safety-type closed thoracic drainage water seal bottle is lightened, making it more scientific and reasonable, and easier to move and carry.
[0050] The pressure limit water level is H; the negative pressure protection is -20 cm water column, i.e., H = 20 cm (doctors can choose an appropriate H value according to the patient's actual situation).
[0051] In use, remove the elastic cylinder 10 connecting the float 81 (center-positioned by the second float) and the float 91 (center-positioned by the third float) to the outer casing 1; connect the pleural effusion drainage tube 61 and the pleural gas drainage tube 62 to their respective matching pleural effusion drainage hoses and pleural gas drainage hoses; the pleural effusion drainage hose leads to the lower part of the patient's pleural cavity (as per doctor's orders), and the pleural gas drainage hose leads to the upper part of the pleural cavity (as per doctor's orders); open the drainage flow control valve 24 and the negative pressure regulating valve 25 and set the flow rate and negative pressure values as needed (factory setting: flow rate is off, negative pressure is 15 cm water column); open... The negative pressure generator 3 is switched to adjust the negative pressure. (When using the hospital's existing negative pressure source, connect the hospital's negative pressure pipe to the negative pressure connector of the water seal bottle negative pressure regulating valve 25, and set the negative pressure generator 3 to the closed state.) Under the action of negative pressure, the pleural effusion in the pleural cavity enters the reservoir 21 through the pleural effusion drainage tube 61. The gas in the pleural cavity enters the reservoir 21 through the pleural gas drainage tube 62. The gas in the pleural cavity can be quickly discharged through the pleural gas drainage tube 62, which can quickly reduce the gas in the pleural cavity. The effusion can be extracted through the suction port 211 on the bottom side wall of the reservoir 21 for testing and analysis (as determined by the doctor's order).
[0052] like Figure 4As shown, when the absolute value of the set negative pressure corresponds to a water level H that is less than the pressure limit water level of -20 cm (corresponding to a pressure limit water level H of 20 cm), atmospheric pressure will push the water level in the left tube 221 downwards, and the negative pressure scale corresponding to the water column level in the left tube 221 is the actual negative pressure value, with the water column level higher than the U-shaped bottom of the negative pressure display 22; under the action of negative pressure, the water level in the upper right tube 223 drops to the opening of the inner cavity 234 of the upper right tube connecting to the water seal cavity 23, and the gas in the thoracic cavity flows from the upper right tube 223 to the bottom opening 2312 of the inclined tube 231 of the water seal cavity and along the inclined tube Gas escapes from the vent 2311 at the top. The bubbles flow into the upper liquid layer of the water seal chamber 23 and are discharged sequentially through the flow control valve 24, the negative pressure regulating valve 25, and the negative pressure generator 3. The larger the flow rate value adjusted by the flow control valve 24, the more bubbles emerge from the vent 2311 of the inclined tube 231. The smaller the flow rate value, the more bubbles emerge from the vent 2311 of the inclined tube 231, which is closer to the upper part of the liquid surface. The vent 2311 on the inclined tube 231 is higher on the left and lower on the right. When gas is emitted, a bubble column is formed. As the flow rate increases, the bubble column increases to the right, forming multiple columns of bubbles.
[0053] like Figure 5 As shown, when the set negative pressure value (absolute value) is greater than the absolute value of the pressure limit water level of -20 cm water column (20 cm water column), atmospheric pressure will push the water surface in the left tube 221 downward, and the water surface in the left tube 221 will eventually be level with the bottom end of the U-shaped tube of the negative pressure display 22. External air enters the lower right tube 224 through the bottom end of the U-shaped tube and enters the outer cavity 233, and rises upward from the top liquid surface of the outer cavity 233 along the inclined surface 232, which limits the further increase of the maximum negative pressure value (absolute value), protects the patient's safety, and plays a negative pressure protection role. The principle of use is simple and the structure is scientific and reasonable. At the same time, under the action of negative pressure, the water level in the upper right pipe 223 drops to the opening of the inner cavity 234 of the upper right pipe connecting to the water seal cavity 23. The gas in the chest cavity is passed from the upper right pipe 223 to the lower end of the inclined pipe 231 of the water seal cavity and then upward along the inclined pipe through the exhaust hole 2311 on the inclined pipe to the upper part of the water seal cavity 23. Together with the external air coming out of the outer cavity, it is discharged through the drainage flow control valve 24, the negative pressure regulating valve 25, and the negative pressure generator 3.
[0054] When the flow rate is adjusted by regulating the flow control valve 24, the gas enters the inclined tube 231 and exits through the vent 2311 at the upper end of the inclined tube 231. The vent 2311 is higher on the left and lower on the right, so the number of vent 2311 through which the gas passes is relatively small, and the gas exits through the vent 2311 at the higher end of the inclined tube 231. When the flow rate is increased, the number of vent 2311 through which the gas passes upward along the inclined tube 231 is larger, and the range of the vent 2311 through which the gas passes is wider. The range is also wider, with bubbles appearing at the vent holes from the lowest to the highest water level in the water seal tank 23. The higher the flow rate value adjusted by the flow control valve 24, the more vent holes 2311 on the inclined tube 231 will produce bubbles. This can serve as an auxiliary reference for medical staff or patients to visually judge the gas flow rate. Although the flow rate value cannot be read precisely, it can be used as an auxiliary judgment. The gas flow rate can be roughly judged based on the range of bubbles appearing at the vent holes 2311 on the inclined tube 231 in the water seal chamber 23, which is very intuitive and convenient.
[0055] If the negative pressure generator malfunctions, the air pressure in the water seal chamber increases, the water level in the left and upper right pipes rises, and the second float 8 and the third float 9 float upwards. The second float 8 seals with the second connecting pipe 52 to prevent water containing gas from spraying out of the second connecting pipe 52 and polluting the environment. The third float 9 floats upwards and seals with the first connecting pipe 51. At the same time, the anti-backflow one-way valve 11 forms two safety protections, preventing changes in air pressure in the liquid storage chamber 21, preventing discomfort in the patient's chest cavity, and also preventing water in the negative pressure display 22 and the water seal chamber 23 from flowing back into the liquid storage chamber 21.
[0056] When the doctor orders discontinuation of use, pull upwards the float 81 positioned at the center of the second float, and secure it to the outer casing 1 by fitting a flexible silicone rubber cylinder 10 onto the float 81, preventing the purified water in the left tube 221 from flowing out of the outer casing 1 through the second connecting pipe 52 during movement; pull upwards the float 91 positioned at the center of the third float, and secure it to the outer casing 1 by fitting a flexible silicone rubber cylinder 10 onto the float 91, preventing the purified water in the upper right tube 221 from flowing out of the outer casing 1 during movement. The water in 23 flows to the first connecting pipe 51, and together with the anti-backflow check valve 11, it provides double protection to prevent water from flowing into the storage chamber 21 through the first connecting pipe 51; the drainage flow control valve 24 is closed, the negative pressure regulating valve 25 does not need to be moved, and the negative pressure generator 3 is turned off; the drainage flow control valve 24 is closed to prevent water in the water seal chamber 23 from flowing into the drainage flow control valve 24; there is no need to worry about the liquid flowing out during the movement and transportation of the safe chest cavity closed drainage water seal bottle; it is convenient for movement and transportation (movement must prevent the patient from getting infected).
[0057] When the negative pressure regulating valve 25 is directly connected to the negative pressure generating equipment (such as when used in a hospital with negative pressure generating equipment), the operating principle is the same as above, and will not be repeated here.
[0058] Example 2
[0059] like Figure 6-9 , Figure 12-13 As shown, a safety-type closed thoracic drainage water-seal bottle includes an outer shell 1, a water-seal bottle 2 mounted on the outer shell 1, a handle 4, and a hook 14. The hook 14 is hinged to the outer side wall of the outer shell. The water-seal bottle 2 includes a liquid storage chamber 21, a negative pressure indicator 22, a water seal chamber 23, a drainage flow control valve 24, a negative pressure regulating valve 25, and a negative pressure generator 3. The negative pressure indicator 22 includes a left tube 221 and a right tube 222. The top end of the liquid storage chamber 21 is connected to the top end of the right tube 222 via a first connecting tube 51. The middle part of the 22 is connected to the water seal chamber 23. The top of the left pipe 221 is connected to the atmosphere through a sealed second connecting pipe 52. The top of the liquid storage chamber 21 is provided with a pleural effusion drainage tube 61 and a pleural gas drainage tube 62, which respectively extend upward through the outer shell 1. The top of the water seal chamber 23 is connected to the drainage flow control valve 24 through a connecting pipe. The drainage flow control valve 24 is connected to the negative pressure regulating valve 25, and the negative pressure regulating valve 25 is connected to the negative pressure generator 3. The liquid storage chamber 21 is provided with a first float 7, and the center of the first float is positioned by a float. The rod 71 passes vertically upward through the first connecting pipe 51 and is fixed to the outer shell 1; a second float 8 is provided inside the top pipe opening of the left pipe, and the float rod 81, which is positioned at the center of the second float, passes vertically upward through the second connecting pipe 52 and the outer shell 1. The elastic cylinder 10, made of silicone rubber, is fitted onto the float rod 81 and fixed to the outer shell 1 by slotting the groove 101 on the vertical side wall of the elastic cylinder into the float rod 81, and the elastic cylinder 10 is fitted onto the float rod 81 and fixed to the outer shell 1; a third float 9 is provided inside the upper pipe opening of the right pipe 222. The float 91, which is positioned at the center of the third float, passes vertically upward through the first connecting pipe 51 and the outer shell 1. Similarly, it is fixed to the outer shell 1 by the elastic cylinder 10 made of silicone rubber. The first connecting pipe 51 is equipped with an anti-backflow check valve 11. The negative pressure display 22 and the water seal cavity 23 are filled with pure water. When there is no negative pressure, the liquid level is higher than the height of the right pipe 222 connected to the water seal cavity, and the entire inclined pipe 231 (as a display window and observer for observing the gas) is immersed in the liquid in the water seal cavity.
[0060] The liquid storage chamber 21, the negative pressure display 22, the first connecting pipe 51, and the second connecting pipe 52 are all made of transparent hot-melt hard plastic. The liquid storage chamber 21 is vertically divided into two parts. When the first float 7 and the float rod 71 positioned at the center of the first float are placed into the liquid storage chamber 21, the float rod 71 positioned at the center of the first float passes through the first connecting pipe 51 and the outer shell 1 and is fixed to the outer shell 1. The two parts of the liquid storage chamber 21 are then microwave welded to form the liquid storage chamber 21 (existing technology). Similarly, the negative pressure display 22 is also divided into two parts from top to bottom. The installation methods of the second float 8 and the third float 9 are the same as above and will not be described again.
[0061] The outer shell 1 is also provided with several perforations for the pleural effusion drainage tube 61, the pleural gas drainage tube 62, the float 71, the float 81, the float 91 positioned at the center of the first float, the exhaust pipe of the negative pressure generator, the drainage flow control valve 24, and the negative pressure regulating valve 25 to pass through and be installed and fixed. The float 71, the float 81, and the float 91 positioned at the center of the first float are equipped with float caps 15. The outer diameter of the float caps 15 is larger than the diameter of the corresponding perforations on the outer shell. The float caps 15 corresponding to the floats positioned at the center of the first float are fixed to the outer shell 1. The float caps 15 corresponding to the floats positioned at the center of the second float are provided with through holes 151 in the axial direction.
[0062] like Figure 6-7 As shown, the bottom side wall of the liquid storage chamber 21 is provided with a liquid extraction port 211 for detection, and the outer shell 1 corresponding to the liquid extraction port 211 is provided with a liquid extraction hole 26. The liquid extraction port 211 is provided with a sealing rubber. The bottom end of the liquid storage chamber 21 is equipped with a waste liquid discharge valve 12, and the outer shell corresponding to the waste liquid discharge valve 12 is provided with a waste liquid discharge hole 13. When the safety-type closed thoracic drainage water seal bottle is used, the accumulated liquid in the liquid storage chamber can be discharged and cleaned through the waste liquid discharge valve 12.
[0063] like Figure 6-9 As shown, the first connecting pipe 51 has two float rod through holes, which are respectively used to connect the float rod 71 and the float rod 91 positioned at the center of the first float ball. The float rod 71 and the float rod 91 positioned at the center of the third float ball are sealed with the corresponding float rod through holes on the first connecting pipe 51. The float rod 71 and the float rod 91 positioned at the center of the first float ball can move up and down along the vertical direction of the float rod through hole. The first float ball 7 and the third float ball 9 are positioned and connected up and down on the corresponding float rod. When the float ball moves upward, the negative pressure airflow of the first connecting pipe is closed to prevent waste liquid from flowing into the display cavity and the water seal cavity.
[0064] like Figure 11 As shown, Figure 11 The water-sealed bottle in the middle is, Figure 6-7 Equivalent schematic diagram of the water-sealed bottle, showing the water consumption ratio of this patent. Figure 11 The water consumption is significantly reduced, the overall weight of the safe closed thoracic drainage water seal bottle is lightened, making it more scientific, reasonable, and easier to move and carry.
[0065] like Figure 6-9 The water seal cavity 23 is provided with an inclined tube 231 that divides the water seal cavity 23 into upper and lower parts. The inclined tube 231 divides the water seal cavity 23 into upper and lower parts. The bottom periphery of the inclined tube 231 is sealed to the inner wall of the water seal cavity 23. The inclined tube 231 is located below the liquid surface. The bottom opening of the inclined tube 231 is semi-circular on the upper left inner side. The vent hole 2311 at the upper end of the inclined tube 231 is lower than the liquid surface of the water seal cavity.
[0066] The pressure limit water level is H; the negative pressure protection is -20 cm water column, i.e., H = 20 cm (doctors can choose an appropriate H value according to the patient's actual situation).
[0067] In use, remove the elastic cylinder 10 connecting the float 81 (center-positioned by the second float) and the float 91 (center-positioned by the third float) to the outer casing 1; connect the pleural effusion drainage tube 61 and the pleural gas drainage tube 62 to their respective matching pleural effusion drainage hoses and pleural gas drainage hoses; the pleural effusion drainage hose leads to the lower part of the patient's pleural cavity (as determined by the doctor's order), and the pleural gas drainage hose leads to the upper part of the pleural cavity (as determined by the doctor's order); open the drainage flow control valve 24 and the negative pressure regulating valve 25 and set the flow rate and negative pressure values as needed (the factory setting is closed for flow rate and 15 cm water column for negative pressure). Turn on the negative pressure generator 3 switch. (When using the hospital's existing negative pressure source, connect the hospital's negative pressure pipe to the negative pressure connector of the water seal bottle negative pressure regulating valve 25, and turn the negative pressure generator 3 off.) Under the action of negative pressure, the pleural effusion in the pleural cavity enters the reservoir 21 through the pleural effusion drainage tube 61. The gas in the pleural cavity enters the reservoir 21 through the pleural gas drainage tube 62. The gas in the pleural cavity can be quickly discharged through the pleural gas drainage tube 62, which can quickly reduce the gas in the pleural cavity. The effusion can be extracted through the suction port 211 on the bottom side wall of the reservoir 21 for testing and analysis (as determined by the doctor's order).
[0068] like Figure 8 As shown, when the absolute value of the set negative pressure corresponds to a water level H that is less than the pressure limit water level of -20 cm water column (corresponding to a pressure limit water level H of 20 cm), atmospheric pressure will push the water level in the left tube 221 downwards, and the negative pressure scale corresponding to the water column level in the left tube 221 is the actual negative pressure value, with the water column level higher than the U-shaped bottom of the negative pressure display 22; under the action of negative pressure, the water level in the right tube 222 drops to the opening of the right tube connecting to the water seal cavity 23, and the gas in the thoracic cavity flows from the right tube 222 to the bottom opening 2312 of the inclined tube 231 of the water seal cavity and along the top of the inclined tube. Gas escapes from hole 2311. The bubbles flow into the upper liquid layer of the water seal chamber 23 and are discharged sequentially through the flow control valve 24, the negative pressure regulating valve 25, and the negative pressure generator 3. The larger the flow rate value adjusted by the flow control valve 24, the more bubbles will emerge from the vent hole 2311 of the inclined tube 231. The smaller the flow rate value, the more bubbles will emerge from the vent hole 2311 on the inclined tube 231, which is closer to the upper part of the liquid surface. The vent hole 2311 on the inclined tube 231 is higher on the left and lower on the right. When gas is emitted, a bubble column is formed. As the flow rate increases, the bubble column increases to the right, forming multiple columns of bubbles.
[0069] like Figure 9As shown, when the set negative pressure value (absolute value) is greater than the absolute value of the pressure-limiting water level of -20 cm water column (20 cm water column), atmospheric pressure will push the water surface in the left pipe 221 downwards, and the water surface in the left pipe 221 will eventually be level with the bottom end of the U-shaped pipe of the negative pressure display 22. Air enters the right pipe 222 through the bottom end of the U-shaped pipe and then enters the inclined pipe 231. Under the action of negative pressure, the water surface in the right pipe 222 drops to the opening of the right pipe connecting to the water seal cavity 23, limiting the maximum The continued increase in negative pressure (absolute value) protects the patient's safety and plays a role in negative pressure protection; the gas in the pleural cavity is introduced from the right tube 222 to the bottom opening 2312 of the inclined tube 231 of the water seal cavity and is released along the exhaust hole 2311 at the top of the inclined tube. The external air entering the water seal cavity from the left tube 221 mixes with the gas drained from the pleural cavity and passes through the exhaust hole 2311 of the inclined tube 231 before being discharged together through the drainage flow control valve 24, the negative pressure regulating valve 25, and the negative pressure generator 3.
[0070] When the flow rate is adjusted by regulating the flow control valve 24 to regulate the gas flow rate, when the flow rate is low, gas bubbles rise along the inclined tube 231 and emerge through the vent holes 2311 at the upper end of the inclined tube 231. The vent holes 2311 are higher on the left and lower on the right, so the number of vent holes 2311 through which the gas flows is relatively small, and the gas emerges through the vent holes 2311 located at the higher end of the inclined tube 231. When the flow rate is increased, the number of vent holes 2311 through which the gas flows upward along the inclined tube 231 is larger, and the range of the vent holes 2311 through which the gas flows is also wider. Bubbles appear at the vent holes from the lowest to the highest water level in the water seal tank 23. The higher the flow rate value adjusted by the flow control valve 24, the more bubbles emerge from the inclined tube 231. The more vent holes 2311 there are, the more they can serve as an auxiliary reference for medical staff or patients to visually judge the gas flow rate. Although the flow rate value cannot be read precisely, it can be used as an auxiliary judgment. The gas flow rate can be roughly judged based on the range of bubbles emanating from the vent holes 2311 on the inclined tube 231 in the water seal cavity 23, which is very intuitive and convenient. However, in Embodiment 2, when the negative pressure value exceeds the negative pressure protection, the air in the atmosphere mixes with the gas in the right tube and passes through the vent holes 2311 on the inclined tube 231. Therefore, it is impossible to judge the gas flow rate by the range of bubbles emanating from the vent holes 2311 on the inclined tube 231 in the water seal cavity 23. Therefore, the inclined tube auxiliary observation of the flow rate in Embodiment 2 is somewhat inferior to that in Embodiment 1.
[0071] If the negative pressure generator malfunctions, the air pressure in the water seal chamber increases, the water level in the left and right pipes rises, and the second float 8 and the third float 9 float upwards. The second float 8 seals with the second connecting pipe 52 to prevent water containing gas from spraying out of the second connecting pipe 52 and polluting the environment. The third float 9 floats upwards and seals with the first connecting pipe 51. At the same time, the anti-backflow one-way valve 11 forms two safety protections, preventing changes in air pressure in the liquid storage chamber 21, preventing discomfort in the patient's chest cavity, and also preventing water in the negative pressure display 22 and the water seal chamber 23 from flowing back into the liquid storage chamber 21.
[0072] When the doctor orders that the use be suspended, pull upwards the float 81 positioned at the center of the second float, and use the elastic cylinder 10 made of silicone rubber to fit onto the float 81 and fix it to the outer shell 1 to prevent the purified water in the left tube 221 from flowing out of the outer shell 1 through the second connecting tube 52 during movement; pull upwards the float 91 positioned at the center of the third float, and use the elastic cylinder 10 made of silicone rubber to fit onto the float 91 and fix it to the outer shell 1 to prevent the water in the right tube 222 from flowing into the first connecting tube 51 during movement, and together with the anti-backflow check valve 11, double protection prevents water from flowing into the storage chamber 21 through the first connecting tube 51; close the drainage flow control valve 24, the negative pressure regulating valve 25 does not need to be moved, and the negative pressure generator 3 is turned off; close the drainage flow control valve 24 to prevent water in the water seal chamber 23 from flowing into the drainage flow control valve 24; there is no need to worry about the liquid flowing out during the movement and transportation of the safe chest cavity closed drainage water seal bottle; it is convenient for movement and transportation (movement must prevent patient infection).
[0073] When the negative pressure regulating valve 25 is directly connected to the negative pressure generating equipment (such as when used in a hospital with negative pressure generating equipment), the operating principle is the same as above, and will not be repeated here.
[0074] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.
Claims
1. A safe and effective closed thoracic drainage water-seal bottle, comprising a shell (1), a water-seal bottle (2) mounted on the shell (1), a handle (4), and a hook (14), characterized in that: The water-sealed bottle (2) includes a liquid storage chamber (21), a negative pressure display (22), a water seal chamber (23), a flow control valve (24), a negative pressure regulating valve (25), and a negative pressure generator (3). The negative pressure display includes a left tube (221) and a right tube. The top of the liquid storage chamber (21) is sealed to the top of the right tube of the negative pressure display (22) through a first connecting tube (51). The middle right side of the negative pressure display (22) is connected to the water seal chamber (23). The top of the left tube of the negative pressure display (22) is sealed to the atmosphere through a second connecting tube (52). The bottoms of the right and left tubes of the negative pressure display (22) are connected to form a U-shaped pipeline. The top of (21) is provided with a pleural effusion drainage tube (61) and a pleural gas drainage tube (62), which respectively extend upward through the outer shell (1); the top of the water seal cavity (23) is connected to the drainage flow control valve (24) through a connecting pipe, the drainage flow control valve (24) is connected to the negative pressure regulating valve (25), and the negative pressure regulating valve (25) is connected to the negative pressure generator (3); a first float (7) is provided at the pipe opening of the first connecting pipe (51) at the top of the liquid storage cavity (21), and the float rod (71) positioned at the center of the first float passes vertically upward through the first connecting pipe (51) and is fixed to the outer shell (1); The negative pressure display (22) has a second float (8) inside the top pipe opening of the left tube. The float rod (81) positioned at the center of the second float passes vertically upward through the second connecting pipe (52) and the outer shell (1) and is fixed to the outer shell (1) by a fastener. The negative pressure display (22) has a third float (9) inside the upper pipe opening of the right tube. The float rod (91) positioned at the center of the third float passes vertically upward through the first connecting pipe (51) and the outer shell (1) and is fixed to the outer shell (1) by a fastener. The first connecting pipe (51) is equipped with an anti-backflow check valve (11). The negative pressure display (22) and the water seal cavity (23) are filled with liquid. The liquid is in In the absence of negative pressure, the liquid level is higher than the height of the pipe opening connected to the water seal cavity in the middle right side of the negative pressure display; the left pipe (221) is marked with a scale, the maximum value of the scale at the upper end of the left pipe (221) is zero, and it gradually decreases downwards; the scale value at the bottom of the U-shaped pipe of the negative pressure display (22) is the lowest negative pressure; the water seal cavity is provided with a hollow inclined pipe (231) with several equidistant vent holes (2311) at the top; the bottom of the inclined pipe is open; the inclined pipe is connected to the water seal cavity with the left side higher than the right side; the bottom periphery of the inclined pipe is sealed to the water seal cavity; the inclined pipe (231) is located below the liquid level; the vent hole (2311) at the upper end of the inclined pipe (231) is lower than the liquid level of the water seal cavity.
2. The safe and effective closed thoracic drainage water-seal bottle according to claim 1, characterized in that: The bottom side wall of the liquid storage chamber (21) is provided with a liquid extraction port (211) for detection. The outer shell (1) corresponding to the liquid extraction port (211) is provided with a liquid extraction hole (26). The liquid extraction port (211) is provided with sealing silicone rubber. The bottom of the liquid storage chamber (21) is equipped with a waste liquid discharge valve (12). The outer shell corresponding to the waste liquid discharge valve (12) is provided with a waste liquid discharge hole (13).
3. The safe and effective closed thoracic drainage water-seal bottle according to claim 1, characterized in that: The outer shell (1) is also provided with several perforations for the pleural effusion drainage tube (61), the pleural gas drainage tube (62), the float (71) with the center of the first float, the float (81) with the center of the second float, the float (91) with the center of the third float, the air extraction tube of the negative pressure generator, as well as the drainage flow control valve (24) and the negative pressure regulating valve (25) to pass through and be fixed.
4. The safe and effective closed thoracic drainage water-seal bottle according to claim 1, characterized in that: The first connecting pipe (51) is provided with two float rod through holes, which are respectively used to accommodate the float rod (71) positioned at the center of the first float and the float rod (91) positioned at the center of the third float. The float rod (71) positioned at the center of the first float and the float rod (91) positioned at the center of the third float are respectively connected to the float rod through holes on the first connecting pipe (51) in a sealed and movable manner.
5. A safe and effective closed thoracic drainage water-seal bottle according to claim 4, characterized in that: The surfaces of the first float (7), the second float (8), and the third float (9) are all provided with a rubber sealing layer. The float rod (71) positioned at the center of the first float, the float rod (81) positioned at the center of the second float, and the float rod (91) positioned at the center of the third float are all equipped with float rod caps (15). The outer diameter of the float rod cap (15) is larger than the diameter of the corresponding perforation on the outer shell. The float rod cap (15) corresponding to the float rod positioned at the center of the first float is fixed to the outer shell (1). The float rod cap (15) corresponding to the float rod positioned at the center of the second float is provided with a through hole (151) in the axial direction.
6. The safe and effective closed thoracic drainage water-seal bottle according to claim 1, characterized in that: The fastener is an axially hollow elastic cylinder (10), and the vertical sidewall of the elastic cylinder is provided with a groove (101).
7. A safe and effective closed thoracic drainage water-seal bottle according to claim 6, characterized in that: The elastic cylinder (10) is made of silicone rubber; the liquid storage chamber (21), the negative pressure display (22), the first connecting pipe (51), the second connecting pipe (52), and the outer shell (1) are all made of transparent material.
8. A safe and effective closed thoracic drainage water-seal bottle according to claim 1, characterized in that: The right tube of the negative pressure display (22) includes an upper right tube (223) and a lower right tube (224); the water seal cavity (23) is provided with an inner cavity (234) and an outer cavity (233), the inner cavity is located inside the outer cavity, the inner cavity (234) and the outer cavity (233) are only connected at the top, the liquid level is higher than the top of the inner cavity (234), the inner cavity (234) is provided with an inclined tube, the inclined tube (231) divides the inner cavity (234) into upper and lower parts, the bottom periphery of the inclined tube (231) is sealed to the inner wall of the inner cavity (234), the inclined tube (231) is located below the liquid level, the bottom opening of the inclined tube (231) is semi-circular at the upper left inner side; the top of the liquid storage cavity (21) is connected to the top of the upper right tube (223) through the first connecting tube (51), the bottom end of the upper right tube (223) and the right The top of the lower tube (224) is located in the middle right side of the negative pressure display (22) and is connected to the inner cavity (234) and outer cavity (233) of the water seal cavity (23) respectively. The bottom surface of the inner cavity (234) is a slope (232). The slope is connected to the lower right tube at the lowest point of the slope and is higher than or equal to the highest point of the lower right tube connected to the water seal cavity. The top of the left tube (221) is connected to the atmosphere through a sealed connection to the second connecting tube (52). The upper end of the left tube (221) is equipped with a second float (8), and the upper end of the upper right tube (223) is equipped with a third float (9). The left tube (221) is equipped with a scale. The maximum value of the scale at the upper end of the left tube (221) is zero and gradually decreases downwards. The scale value at the bottom of the U-shaped tube of the negative pressure display (22) is the lowest negative pressure value. The liquid is pure water or physiological saline.
9. A safe and effective closed thoracic drainage water-seal bottle according to claim 1, characterized in that: The negative pressure display (22) includes a left tube (221) and a right tube (222); the top of the liquid storage chamber (21) is connected to the top of the right tube (222) through a first connecting tube (51), the middle of the right tube (222) is connected to a water seal chamber (23), the top of the left tube (221) is connected to the atmosphere through a sealed second connecting tube (52), a second float (8) is provided inside the upper end of the left tube (221), and a third float (9) is provided inside the upper end of the right tube (222); the inclined The tube divides the water seal cavity (23) into upper and lower parts. The bottom periphery of the inclined tube (231) is sealed to the inner wall of the water seal cavity (23). The inclined tube (231) is located below the liquid surface. The bottom opening of the inclined tube (231) is semi-circular on the upper left inner side. The left tube (221) is marked with a scale. The maximum value of the scale at the upper end of the left tube (221) is zero, and it gradually decreases downward. The scale value at the bottom of the U-shaped tube of the negative pressure display (22) is the minimum negative pressure value. The liquid is pure water or physiological saline.
10. A safe and effective closed thoracic drainage water-seal bottle according to claim 1, characterized in that: The negative pressure generator (3) is equipped with a power supply battery.