Gastrointestinal decompression tube device and method

CN122894575APending Publication Date: 2026-10-13ZHEJIANG QUHUA HOSPITAL (QUZHOU HOSPITAL OF ZHEJIANG MEDICAL HEALTH GRP)
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Patent Information

Application Number
CN202611128898.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-28
Publication Date
2026-10-13

AI Technical Summary

Technical Problem

[0003]然而,传统肠胃减压装置从结构上看,普通胃管的设计较为简单,其吸引端头通常为普通的圆管形状,开口形式单一,在插入患者肠胃后,与肠胃组织的接触面积有限,对于肠胃内容物的吸附效果不够理想

Benefits of technology

该肠胃减压管装置及减压方法的方案中,装置结构通过吸收瓶设置引流接头和负压接头,可分别连接减压引流管和负压管,便于操作与使用。吸引端头独特的半球体端头搭配十字开口和侧孔,能更好地适应肠胃环境,利于肠胃内容物进入管头。管头内腔的扇形硅胶片和档条设计巧妙,负压作用下扇形硅胶片弯折使容物流入吸收瓶,档条则有效防止容物返流,保障减压过程安全。引流加速件包裹在管头外圈,当引流不畅时,挤压充气气囊使管状气囊膨胀,可加速引流,避免堵塞情况发生。整体上,该技术方案操作简便,能较为高效实现肠胃减压,提升患者治疗体验与效果。

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Abstract

The application discloses a gastrointestinal decompression tube device and method, which is composed of an absorption bottle, a decompression drainage tube, a suction end head and a drainage accelerating part. The absorption bottle is provided with a drainage connector and a negative pressure connector, which are connected with the decompression drainage tube and a negative pressure tube respectively, and the negative pressure tube is connected with an air inflation air bag at the end. The decompression drainage tube is provided with a tube head at the front end, the suction end head is fixed at one end of the tube head, the hemispherical end head is provided with a cross opening and a side hole, and the inner cavity of the tube head is provided with a fan-shaped silica gel piece and a stopper. The drainage accelerating part is wrapped in the outer ring of the tube head. When decompression is needed, the suction end head is placed into the gastrointestinal tract of a patient, and the contents enter the tube head through the opening, the negative pressure makes the fan-shaped silica gel piece bend, and the contents flow into the absorption bottle. When the drainage is not smooth, the air bag is squeezed to make the tubular air bag expand and accelerate the drainage, and the stopper can prevent the contents from flowing back. The method is simple in operation, can effectively realize gastrointestinal decompression, and can avoid blockage and reflux.
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Description

Technical Field

[0001] This invention relates to the field of gastrointestinal decompression equipment technology, specifically to a gastrointestinal decompression tube device and method. Background Technology

[0002] In clinical practice, gastrointestinal decompression is a crucial treatment measure, playing a key role, especially in managing gastrointestinal obstruction, pre- and post-abdominal surgery care, and gastrointestinal bleeding. Traditional gastrointestinal decompression methods mainly rely on negative pressure suction using a regular gastric tube. By inserting the tube into the patient's stomach and connecting it to a negative pressure suction device, accumulated gas and fluid in the gastrointestinal tract are suctioned out, thereby reducing pressure within the gastrointestinal tract, preventing gastrointestinal distension, reducing gastrointestinal tension, and ultimately alleviating patient symptoms and promoting recovery.

[0003] However, traditional gastrointestinal decompression devices, particularly ordinary gastric tubes, have a relatively simple design. Their suction end is typically a simple round tube with a single opening. After insertion into the patient's stomach and intestines, the contact area with the gastrointestinal tissue is limited, resulting in insufficient adsorption of gastrointestinal contents. When the gastrointestinal contents are viscous or contain large particles, drainage can be impaired, leading to poor decompression and an inability to effectively remove accumulated gas and fluid, thus affecting the patient's treatment and recovery process. Furthermore, traditional gastric tubes are significantly inadequate in preventing reflux. Lacking effective anti-reflux structures, changes in patient position or fluctuations in negative pressure can easily cause gastrointestinal contents to reflux back into the stomach and intestines. This not only increases patient discomfort but can also lead to complications such as infection, further aggravating the patient's condition.

[0004] In terms of drainage efficiency, traditional gastrointestinal decompression devices also struggle to meet clinical needs. When drainage is obstructed, the lack of an effective mechanism to accelerate drainage means medical staff can only attempt to resolve the issue by adjusting the intensity of negative pressure suction or replacing the gastric tube. However, these methods have limited effectiveness and are relatively cumbersome, increasing the workload of medical staff and impacting the patient's treatment experience. Therefore, this invention aims to provide a gastrointestinal decompression tube device and decompression method that is structurally sound, easy to operate, effectively avoids blockage and reflux, and improves drainage efficiency to meet clinical needs. Summary of the Invention

[0005] In view of the deficiencies mentioned above in the background art, a technical solution for a gastrointestinal decompression tube device is provided.

[0006] It includes an absorption bottle, the top of which is connected to a pressure-reducing drainage tube, and the port of the pressure-reducing drainage tube away from the absorption bottle is connected to an attraction end. A drainage acceleration component is sleeved on the outer surface of the pressure-reducing drainage tube. The absorption bottle includes a bottle body, a bottle cap fixed to the top port of the bottle body, and a drainage connector and a negative pressure connector fixed to the upper surface of the bottle cap. The top port of the drainage connector is connected to a conduit that penetrates into the inner cavity of the bottle body. The top port of the negative pressure connector is connected to a negative pressure tube, and the end of the negative pressure tube is connected to an inflatable airbag. The pressure-reducing drainage tube includes a drainage tube connected to the top end of the drainage connector, and a tube head fixed to the front end of the drainage tube; The suction end includes a hemispherical end fixed to the end of the tube head away from the drainage tube, and six fan-shaped silicone sheets fixed in a ring array in the inner cavity of the tube head. The end face of the hemispherical end away from the tube head is provided with a cross-shaped opening for the gastrointestinal contents to enter, and eight side holes are provided in a ring array on the outer surface of the hemispherical end. The drainage acceleration component includes a tubular airbag wrapped around the outer surface of the tube head, and a rigid sleeve fixed to the outer surface of the tubular airbag. The rear side of the tubular airbag is connected to an air tube, and the end of the air tube away from the tubular airbag is connected to the airbag.

[0007] In the above technical solution, preferably: the bottom port of the conduit is located at the bottom of the inner cavity of the bottle, the bottom port of the negative pressure connector is located at the top of the inner cavity of the bottle, and a one-way valve is installed in the exhaust port of the inflatable bladder away from the negative pressure tube.

[0008] In the above technical solution, preferably: the fan-shaped silicone sheet is located in the front area of ​​the inner cavity of the tube head, the fan-shaped silicone sheets are in contact with each other, and when negative pressure is generated, the fan-shaped silicone sheet is affected by the negative pressure and bends backward to expose the channel for the flow of gastrointestinal contents.

[0009] In the above technical solution, preferably: the front region of the inner cavity of the tube head is fixed with multiple baffles in a ring array, and the rear end face of the baffles contacts the front end face of the fan-shaped silicone sheet, which is used to prevent the fan-shaped silicone sheet from bending forward and exposing the opening when the negative pressure disappears, thereby preventing the reflux of gastrointestinal contents in the rear section of the tube head.

[0010] In the above technical solution, preferably, the cross opening and side holes are used to allow gastrointestinal contents to enter the tube head from multiple directions to avoid blockage.

[0011] In the above technical solution, preferably: the end of the hemisphere is hemispherical, and the cross opening on the front side of the end of the hemisphere is cross-shaped.

[0012] In the above technical solution, preferably: the airbag, the trachea and the internal space of the tubular airbag are interconnected, wherein the airbag has only an air outlet port, which is used to deliver air into the tubular airbag through the trachea after the airbag is squeezed, and the air returns to the airbag from the tubular airbag after the airbag is released.

[0013] In the above technical solution, preferably: the tubular airbag is wrapped around the middle and rear section of the outer ring of the tube head, and expands inward to squeeze the gastrointestinal contents inside the tube head to accelerate drainage.

[0014] In the above technical solution, preferably: a through hole for the air supply pipe is provided on the rear end face of the tubular airbag, and a sealing ring is installed inside the through hole.

[0015] A gastrointestinal decompression method is also provided: During the gastrointestinal decompression procedure, the hemispherical end of the suction device is carefully inserted into the patient's stomach and intestines. At this time, the contents of the stomach and intestines will enter the tube head from multiple directions through the cross-shaped opening and the annular array of side holes on the hemispherical end, effectively avoiding blockage. When the device generates negative pressure, the six fan-shaped silicone sheets located in contact with each other in the front area of ​​the tube head will bend backward under the influence of negative pressure, thereby exposing the channel for the gastrointestinal contents to flow smoothly into the inner cavity of the absorption bottle. If there is any obstruction during the drainage process, the air bag is squeezed, and the air inside it enters the tubular air bag wrapped in the middle and rear section of the outer ring of the tube head through the trachea. The tubular air bag expands and squeezes the contents inside the tube head, accelerating the drainage. After releasing, the air flows back. At the same time, the baffle on the front side of the inner cavity of the tube head can prevent the fan-shaped silicone sheets from bending forward when the negative pressure disappears, preventing the contents in the rear section of the tube head from flowing back. Finally, the contents are led to the bottom of the bottle through the catheter.

[0016] As can be seen from the above technical solution, the gastrointestinal decompression tube device and method provided by the present invention have the following beneficial effects compared with the prior art: In this gastrointestinal decompression tube device and method, the device structure incorporates a drainage connector and a negative pressure connector via an absorption bottle, allowing for connection to the decompression drainage tube and negative pressure tube respectively, facilitating operation and use. The unique hemispherical suction end, combined with a cross-shaped opening and side holes, better adapts to the gastrointestinal environment, facilitating the entry of gastrointestinal contents into the tube. The cleverly designed fan-shaped silicone sheet and baffle within the tube's inner cavity allow the contents to flow into the absorption bottle under negative pressure, while the baffle effectively prevents backflow, ensuring safety during the decompression process. A drainage acceleration component encircles the outer ring of the tube; when drainage is obstructed, squeezing the inflatable bladder expands the tubular bladder, accelerating drainage and preventing blockage. Overall, this technical solution is simple to operate, achieves efficient gastrointestinal decompression, and improves the patient's treatment experience and outcomes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced and explained below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of a gastrointestinal decompression device; Figure 2 Schematic diagram of a negative pressure absorption bottle; Figure 3 This is a schematic diagram of a pressure reducing tube; Figure 4 This is a schematic diagram of the end of the pressure reducing tube; Figure 5 This is a schematic diagram of a flow-driving and accelerating component.

[0019] Appendix Figure 1 - Appendix Figure 5 The correspondence between the components is as follows: 1. Absorption bottle; 1-1. Bottle body; 1-2. Bottle cap; 1-3. Drainage connector; 1-4. Negative pressure tube; 1-5. Inflatable airbag; 1-6. Negative pressure connector; 1-7. Tube; 2. Pressure-reducing drainage tube; 2-1. Drainage tube; 2-2. Tube head; 3. Suction end; 3-1. Hemispherical end; 3-2. Cross opening; 3-3. Side hole; 3-4. Bar; 3-5. Fan-shaped silicone sheet; 4. Drainage acceleration component; 4-1. Airbag; 4-2. Trachea; 4-3. Rigid sleeve; 4-4. Tubular airbag. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described below are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In order to provide a clearer explanation and description of the technical solutions and implementation methods of the present invention, the following describes specific embodiments that implement the preferred technical solutions of the present invention.

[0021] Example: The specific application process of a gastrointestinal decompression tube device is as follows: The gastrointestinal decompression tube device consists of an absorption bottle 1, a decompression drainage tube 2, a suction end 3, and a drainage acceleration component 4. Before performing gastrointestinal decompression, each component needs to be assembled and inspected. First, one end of the decompression drainage tube 2 is tightly connected to the drainage connector 1-3 at the top of the absorption bottle 1, ensuring a good seal at the connection to prevent air or liquid leakage. The decompression drainage tube 2 includes a drainage tube 2-1 and a tube head 2-2 fixed to the front end of the drainage tube 2-1. During assembly, it is necessary to ensure that the connection between the two is stable to avoid separation during use. Next, the suction end 3 is installed to the end of the tube head 2-2 away from the drainage tube 2-1. The hemispherical end 3-1 fits tightly with the end of the tube head 2-2. At the same time, check whether the cross opening 3-2 on the hemispherical end 3-1 and the eight side holes 3-3 arranged in a ring array are unobstructed, ensuring that the gastrointestinal contents can smoothly enter the tube head 2-2 through these openings. The front area of ​​the inner cavity of the tube head 2-2 has multiple baffles 3-4 fixed in a ring array, and the rear end face of the baffles 3-4 is in contact with the front end face of 6 fan-shaped silicone sheets 3-5. It is necessary to confirm that the fan-shaped silicone sheets 3-5 are installed in an accurate position and are in close contact with each other, so that they can function normally when negative pressure is generated and disappears.

[0022] The installation of the drainage accelerator 4 is equally crucial. The tubular airbag 4-4 ​​is wrapped around the outer ring of the tube head 2-2 at the rear end, ensuring even wrapping without wrinkles or twists. This ensures that the tubular airbag 4-4 ​​can evenly compress the tube head 2-2 when it inflates. A through hole for the air tube 4-2 is provided on the rear end face of the tubular airbag 4-4. The air tube 4-2 is passed through the through hole, and a sealing ring is installed inside the hole to prevent air leakage. The end of the air tube 4-2 away from the tubular airbag 4-4 ​​is connected to the airbag 4-1. Check that the internal spaces of the airbag 4-1, air tube 4-2, and tubular airbag 4-4 ​​are interconnected, ensuring that air can smoothly pass through the air tube 4-2 and enter the tubular airbag 4-4 ​​when the airbag 4-1 is compressed. The assembly of the absorption bottle 1 also requires careful attention. The bottle cap 1-2 is fixed to the top port of the bottle body 1-1 to ensure a good seal. A drainage connector 1-3 and a negative pressure connector 1-6 are fixed to the upper surface of the bottle cap 1-2. The tube 1-7 connected to the top end of the drainage connector 1-3 must ensure that its bottom end is located at the bottom of the inner cavity of the bottle body 1-1 so that the gastrointestinal contents can be smoothly guided to the bottom of the bottle body 1-1. The negative pressure tube 1-4 connected to the top end of the negative pressure connector 1-6 is connected to an inflatable airbag 1-5. Check whether the one-way valve installed in the exhaust port of the inflatable airbag 1-5 away from the negative pressure tube 1-4 is working properly, so that air can only be discharged in one direction and prevent backflow of air from affecting the negative pressure effect.

[0023] After assembly, the gastrointestinal decompression procedure begins. Medical personnel carefully insert the hemispherical end 3-1 of the suction tip 3 into the patient's stomach and intestines, moving gently and slowly to avoid damage. At this time, the contents of the stomach and intestines enter the tube head 2-2 from multiple directions through the cross-shaped opening 3-2 and the annular array of side holes 3-3 on the hemispherical end 3-1. The multiple openings effectively prevent drainage obstruction caused by a single opening blockage, allowing the gastrointestinal contents to enter the tube head 2-2 smoothly. When the device generates negative pressure, the six fan-shaped silicone sheets 3-5 located in contact with each other in the front area of ​​the tube head 2-2's inner cavity are affected by the negative pressure. Under the action of negative pressure, the fan-shaped silicone sheets 3-5 bend backward, exposing a channel for the gastrointestinal contents to flow through. The gastrointestinal contents flow smoothly into the decompression drainage tube 2 through this channel and finally into the inner cavity of the absorption bottle 1. Because the bottom end of catheter 1-7 is located at the bottom of the inner cavity of bottle 1-1, the contents can be directly guided to the bottom of bottle 1-1, avoiding accumulation in the upper part of the inner cavity of bottle 1-1. During drainage, drainage difficulties may occur. When this happens, medical staff squeeze cuff 4-1. The air inside cuff 4-1 is compressed and enters the tubular cuff 4-4, which is located in the middle and rear part of the outer ring of tube head 2-2, through trachea 4-2. As air enters, the tubular cuff 4-4 begins to inflate, squeezing the gastrointestinal contents inside tube head 2-2 inward, thereby accelerating drainage. When the pressure is released, the air inside the tubular cuff 4-4 returns to the cuff 4-1, and the tubular cuff 4-4 returns to its original shape. Simultaneously, the baffle 3-4 on the front side of the inner cavity of tube head 2-2 plays an important role. When the negative pressure disappears, the baffle 3-4 prevents the fan-shaped silicone sheet 3-5 from bending forward. Without the obstruction of the baffle strip 3-4, the fan-shaped silicone sheet 3-5 might bend forward, causing the gastrointestinal contents in the rear section of the tube head 2-2 to reflux. The presence of the baffle strip 3-4 effectively prevents this from happening, ensuring the unidirectional and smooth drainage.

[0024] Throughout the gastrointestinal decompression process, medical staff must closely monitor the device's operation and the patient's response. Observe the collection of gastrointestinal contents in absorption bottle 1 to determine if drainage is normal. Simultaneously, monitor the patient's vital signs and gastrointestinal response, noting any changes in symptoms such as abdominal pain or bloating. If any abnormalities are observed, such as sudden cessation of drainage or increased patient pain, the operation should be stopped immediately. Check for device malfunctions or complications and take appropriate measures. After the gastrointestinal decompression is complete, gently remove the suction tip 3 from the patient's stomach and intestines to avoid secondary injury. Then, disassemble the drainage accelerator 4, decompression drainage tube 2, and other components in sequence, cleaning and disinfecting each part for future use. The gastrointestinal contents in absorption bottle 1 must be properly disposed of according to medical waste disposal regulations to prevent cross-infection and environmental contamination. Through this complete operation, the gastrointestinal decompression device effectively achieves gastrointestinal decompression, providing strong support for the patient's treatment and recovery.

[0025] This invention is not limited to the preferred embodiments described above. Anyone should understand that structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention. Finally, it should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this application, should still fall within the scope of the technical content disclosed in this application.

Claims

1. A gastrointestinal decompression tube device, comprising an absorption bottle (1), characterized in that: The top of the absorption bottle (1) is connected to a pressure-reducing drainage tube (2), and the port of the pressure-reducing drainage tube (2) away from the absorption bottle (1) is connected to an attraction end (3). A drainage acceleration component (4) is sleeved on the outer ring surface of the pressure-reducing drainage tube (2). The absorption bottle (1) includes a bottle body (1-1), a bottle cap (1-2) fixed to the top port of the bottle body (1-1), and a drainage connector (1-3) and a negative pressure connector (1-6) fixed to the upper surface of the bottle cap (1-2). The top port of the drainage connector (1-3) is connected to a conduit (1-7) that penetrates into the inner cavity of the bottle body (1-1). The top port of the negative pressure connector (1-6) is connected to a negative pressure tube (1-4), and the end of the negative pressure tube (1-4) is connected to an inflatable airbag (1-5). The pressure-reducing drainage tube (2) includes a drainage tube (2-1) connected to the top end of the drainage connector (1-3), and a tube head (2-2) fixed to the front end of the drainage tube (2-1). The suction end (3) includes a hemispherical end (3-1) fixed to one end of the tube (2-2) away from the drainage tube (2-1), and six fan-shaped silicone sheets (3-5) fixed in a ring array in the inner cavity of the tube (2-2). The end face of the hemispherical end (3-1) away from the tube (2-2) is provided with a cross opening (3-2) for the gastrointestinal contents to enter, and eight side holes (3-3) are provided in a ring array on the outer surface of the hemispherical end (3-1). The drainage acceleration component (4) includes a tubular airbag (4-4) wrapped around the outer surface of the tube head (2-2) and a hard sleeve (4-3) fixed on the outer surface of the tubular airbag (4-4). The trachea (4-2) is connected through the rear side of the tubular airbag (4-4), and the end of the trachea (4-2) away from the tubular airbag (4-4) is connected to an airbag (4-1).

2. The gastrointestinal decompression tube device according to claim 1, characterized in that: The bottom port of the conduit (1-7) is located at the bottom of the inner cavity of the bottle body (1-1), the bottom port of the negative pressure connector (1-6) is located at the top of the inner cavity of the bottle body (1-1), and a one-way valve is installed in the exhaust port of the inflatable airbag (1-5) away from the negative pressure tube (1-4).

3. The gastrointestinal decompression tube device according to claim 1, characterized in that: The fan-shaped silicone sheet (3-5) is located in the front area of ​​the inner cavity of the tube head (2-2). The fan-shaped silicone sheets (3-5) are in contact with each other. When negative pressure is generated, the fan-shaped silicone sheets (3-5) are affected by the negative pressure and bend backward to expose the channel for the flow of gastrointestinal contents.

4. The gastrointestinal decompression tube device according to claim 1, characterized in that: The inner front region of the tube head (2-2) is fixed with multiple baffles (3-4) in a ring array, and the rear end face of the baffles (3-4) contacts the front end face of the fan-shaped silicone sheet (3-5) to prevent the fan-shaped silicone sheet (3-5) from bending forward and exposing the opening when the negative pressure disappears, thereby preventing the reflux of gastrointestinal contents in the rear section of the tube head (2-2).

5. The gastrointestinal decompression tube device according to claim 1, characterized in that: The cross opening (3-2) and side holes (3-3) are used to allow gastrointestinal contents to enter the tube head (2-2) from multiple directions to avoid blockage.

6. The gastrointestinal decompression tube device according to claim 1, characterized in that: The hemispherical end (3-1) is hemispherical, and the cross opening (3-2) on the front side of the hemispherical end (3-1) is cross-shaped.

7. The gastrointestinal decompression tube device according to claim 1, characterized in that: The internal spaces of the airbag (4-1), the trachea (4-2), and the tubular airbag (4-4) are interconnected. The airbag (4-1) has only an air outlet, which is used to deliver air into the tubular airbag (4-4) through the trachea (4-2) after the airbag (4-1) is squeezed. After the airbag is released, the air returns from the tubular airbag (4-4) back into the airbag (4-1).

8. The gastrointestinal decompression tube device according to claim 1, characterized in that: The tubular airbag (4-4) is wrapped around the middle and rear section of the outer ring of the tube head (2-2), and expands inward to squeeze the gastrointestinal contents inside the tube head (2-2) to accelerate drainage.

9. The gastrointestinal decompression tube device according to claim 1, characterized in that: The tubular airbag (4-4) has a through hole through which the air supply pipe (4-2) passes, and a sealing ring is installed inside the through hole.

10. A gastrointestinal decompression method according to claim 1, characterized in that: The method applicable to the gastrointestinal decompression tube device according to any one of claims 1-9 comprises the following steps: S1: When performing gastrointestinal decompression, carefully insert the hemispherical end (3-1) of the suction end (3) into the patient's stomach and intestines. At this time, the contents of the stomach and intestines will enter the tube head (2-2) from multiple directions through the cross opening (3-2) on the hemispherical end (3-1) and the side holes (3-3) arranged in a ring, effectively avoiding blockage. S2: When the device generates negative pressure, the six fan-shaped silicone sheets (3-5) located in the front area of ​​the inner cavity of the tube head (2-2) and in contact with each other will be bent backward under the influence of negative pressure, thereby exposing the channel for the flow of gastrointestinal contents, so that the contents can flow smoothly into the inner cavity of the absorption bottle (1). S3: If there is any obstruction during the drainage process, squeeze the airbag (4-1). The air inside the airbag enters the tubular airbag (4-4) in the middle and rear part of the outer ring of the tube head (2-2) through the trachea (4-2). The tubular airbag (4-4) expands and squeezes the contents inside the tube head (2-2) to accelerate the drainage. After releasing, the air flows back. At the same time, the baffle (3-4) on the front side of the inner cavity of the tube head (2-2) can prevent the fan-shaped silicone sheet (3-5) from bending forward when the negative pressure disappears, preventing the contents of the rear part of the tube head (2-2) from flowing back. Finally, the contents are led to the bottom of the bottle body (1-1) through the tube (1-7).