Abdominocentesis drainage device with adjustable drainage amount

Abstract

The invention relates to the technical field of medical instruments, and discloses an abdominal cavity puncture drainage device with adjustable drainage volume, which comprises a main body assembly and a drainage tube, a communication shell is fixed at the end part of the drainage tube, a drainage outer bottle is fixed at the bottom of the communication shell, and a drainage inner bottle slides in the drainage outer bottle. The medical drainage device has the advantages that the communicating shell is provided with the valve part capable of being adjusted in multiple gears, the monitoring part is arranged, medical staff can preliminarily adjust the drainage speed through preset gears, meanwhile, the real-time flow speed is visually obtained through a pointer, whether the flow speed is matched with the gears or not is accurately judged, and compared with a traditional single manual valve, the medical drainage device is more convenient to use. The accuracy of flow control is remarkably improved, complications caused by improper flow velocity are avoided, and the treatment safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an abdominal puncture drainage device with adjustable drainage volume. BACKGROUND

[0002] Abdominal puncture drainage is an important means for treating conditions such as abdominal effusion and abscess in clinical practice. It can relieve the symptoms of patients and assist in disease diagnosis and treatment by draining the abnormal fluid in the abdominal cavity. However, the existing abdominal puncture drainage devices have many limitations in clinical application and cannot meet the precise treatment needs of complex conditions.

[0003] On the one hand, the flow control function of the existing drainage device needs to be improved. Most devices only use a single manual valve for flow adjustment, such as traditional spiral infusion clamps. Medical staff need to manually adjust the valve opening based on experience, which makes it difficult to achieve precise flow control. During the drainage process, the drainage speed is easily affected by factors such as changes in abdominal cavity pressure and fluctuations in effusion viscosity. The existing devices lack effective dynamic adjustment mechanisms and cannot adapt to these changes in a timely manner, resulting in low drainage efficiency and even the possibility of complications. For example, when the protein and cell components in the effusion increase and become viscous, the drainage resistance increases significantly, making it difficult for traditional devices to ensure smooth drainage and affecting treatment effectiveness.

[0004] On the other hand, the existing drainage device lacks effective measures to handle viscous effusion. Some devices use pre-installed negative pressure or external negative pressure pumps to provide drainage power. However, this method cannot provide sustained and stable suction when facing viscous effusion in the later stage of drainage, and there is a risk of damaging abdominal cavity tissue due to excessive negative pressure. In addition, the existing devices usually do not have real-time monitoring and visual feedback functions for drainage flow rate, making it difficult for medical staff to intuitively determine whether the current drainage speed meets the treatment needs. Frequent manual measurement of drainage volume increases the workload and is not conducive to timely adjustment of treatment plans. SUMMARY

[0005] The present application aims to solve the problem that the existing abdominal puncture drainage device lacks precision in flow adjustment, the ability to handle viscous effusion, and the convenience of flow rate monitoring.

[0006] Technical solution: The present application provides an abdominal puncture drainage device with adjustable drainage volume, which comprises a main component including a drainage tube, a communication shell fixed at the end of the drainage tube, a drainage outer bottle fixed at the bottom of the communication shell, a drainage inner bottle sliding in the drainage outer bottle, a negative pressure cavity between the drainage outer bottle and the drainage inner bottle, and a liquid guide tube fixed at the top of the drainage inner bottle. The adjusting assembly is arranged on the main body assembly, and comprises a valve arranged on the surface of the communicating shell, a control valve sliding in the communicating shell, a flow channel arranged in the communicating shell, and a guide pipe in communication with the flow channel.

[0007] Further, the monitoring member of the device further comprises a rotating sleeve rotatingly connected in the communicating shell, and a baffle fixed on the surface of the rotating sleeve.

[0008] Further, the monitoring member of the device further comprises a rotating rod fixed in the rotating sleeve, and a pointer fixed on the end of the rotating rod.

[0009] Further, the adjusting member of the device further comprises an adjusting plate sliding in the communicating shell, a through hole and an adjusting channel arranged in the adjusting plate, a communicating pipe fixed in the communicating shell, and a negative pressure cavity.

[0010] Further, the adjusting member of the device further comprises a push rod fixed on one side of the adjusting plate, a button fixed on the other end of the push rod, a compression spring fixed on the other side of the adjusting plate, and the other end of the compression spring fixed on the inner wall of the communicating shell.

[0011] Further, the adjusting member of the device further comprises a limiting block fixed on one side of the adjusting plate.

[0012] Further, the main body assembly of the device further comprises a communicating member arranged on the top of the external drainage bottle, a supporting pipe fixed on the top of the external drainage bottle, a filter sleeve fixed on the top of the supporting pipe, and filter cotton filled in the filter sleeve.

[0013] Further, the communicating member of the device further comprises a telescopic pipe fixed in the internal drainage bottle and fixed in the supporting pipe.

[0014] Further, the bottom of the external drainage bottle is provided with an exhaust hole, and the bottom of the internal drainage bottle is fixed with a first sealing piece.

[0015] Further, the top of the external drainage bottle is fixed with a second sealing piece.

[0016] Advantages: Compared with the prior art, the device has the following advantages: 1. The present application is provided with a multi-position adjustable valve element in a communication shell, and equipped with a monitoring element, medical staff can preliminarily adjust the drainage speed through the preset gear, and at the same time intuitively obtain the real-time flow rate through the pointer, accurately judge whether the flow rate matches the gear, compared with the traditional single manual valve, the accuracy of flow control is significantly improved, and complications caused by improper flow rate are avoided, and the safety of treatment is ensured; 2. The drainage bottle adopts a double-layer design to form a negative pressure chamber, which is initially the same as the atmospheric pressure. During the drainage process, the negative pressure chamber pressure decreases with the accumulation of liquid into the drainage inner bottle. In the late drainage stage, when the accumulation of liquid becomes viscous and the flow rate slows down, the negative pressure chamber can be connected with the drainage pipeline to utilize the negative pressure suction force to assist drainage. Compared with the existing pre-set negative pressure or external negative pressure pump method, it can provide stable suction force to ensure that the viscous accumulation of liquid is smoothly discharged, and can avoid damage to abdominal tissue caused by excessive negative pressure, effectively improving the drainage efficiency and treatment effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 2 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 1 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 3 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 2 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 4 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 2 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 5 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume from another angle; Figure 6 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 5 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 7 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 6 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 8 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 6 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 9 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 10 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 11 Structure diagram of the abdominal puncture drainage device with adjustable drainage volume; Figure 12Cross-sectional view of the adjustment plate of an adjustable abdominal paracentesis drainage device.

[0018] In the diagram: Main component 100; Drainage tube 101; Connecting shell 102; Outer drainage bottle 103; Inner drainage bottle 104; Negative pressure chamber 103-1; Liquid guide tube 105; Adjusting component 200; Valve component 201; Control valve 2011; Connecting groove 2011-1; Flow channel 102-1; Threaded column 2012; Adjusting knob 2013; Indicator plate 2014; Monitoring component 202; Rotating sleeve 2021; Baffle 2022; Monitoring channel 102-2; Rotating rod 2023; Pointer 2024; Scale bar 2025; Protective shell 2026; Adjusting component 203; Adjusting plate 2031; Through hole 2031-1; Adjusting channel 2031-2; Connecting pipe 2032; Push rod 2033; Button 2034; Compression spring 2035; Limiting block 2036; Connecting component 106; Support pipe 1061; Filter sleeve 1062; Sealing cover 1063; Telescopic pipe 1064; Exhaust hole 103-2; First sealing plate 107; Second sealing plate 108. Detailed Implementation

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0021] Example 1

[0022] Reference Figures 1-9 This is the first embodiment of the present invention. This embodiment provides an abdominal paracentesis drainage device with adjustable drainage volume. The abdominal paracentesis drainage device with adjustable drainage volume includes a main body component 100, including a drainage tube 101. The other end of the drainage tube 101 is inserted into the patient's abdomen for draining the patient's abdominal fluid. The drainage tube 101 is the prior art. A duckbill valve is provided in the drainage tube 101 to prevent the backflow of the fluid. Too rapid a drainage rate can cause a sharp drop in intra-abdominal pressure in a short period of time, leading to vasodilation and a large amount of blood pooling in the abdominal organs and lower limb blood vessels, resulting in insufficient effective circulating blood volume, which in turn can cause shock symptoms such as decreased blood pressure and increased heart rate. In addition, for patients with cirrhosis and ascites, rapid and large-volume drainage may also induce hepatic encephalopathy. Different patients have different conditions, physical conditions and tolerance. For example, patients with weak constitution or cardiopulmonary dysfunction have poor tolerance to drainage speed and need slow drainage; while young and healthy patients with relatively mild conditions can appropriately speed up the drainage speed under close observation to improve treatment efficiency. As the drainage process progresses, the composition and viscosity of the ascites change. Initially, the fluid is relatively thin and has good fluidity, and the drainage rate is close to the set value. However, if the fluid contains more protein, cells, and other components and becomes more viscous in the later stages, the resistance when the fluid flows through the drainage tube and regulating valve increases, and the flow rate will slow down significantly, resulting in fluctuations in the flow rate. A connecting shell 102 is fixed to the end of the drainage tube 101. An outer drainage bottle 103 is fixed to the bottom of the connecting shell 102. An inner drainage bottle 104 slides inside the outer drainage bottle 103. A negative pressure chamber 103-1 is provided between the outer drainage bottle 103 and the inner drainage bottle 104. The negative pressure chamber 103-1 is initially the same as the outside air pressure and is currently in a sealed state. A liquid guide tube 105 is fixed to the top of the inner drainage bottle 104, which connects the connecting shell 102 and the inner drainage bottle 104.

[0023] The accumulated fluid drawn out by the drainage tube 101 is transported to the connecting shell 102, and then from the connecting shell 102 to the inner drainage bottle 104, thereby increasing the overall weight of the inner drainage bottle 104. This causes the inner drainage bottle 104 to slide downward, thereby increasing the volume of the negative pressure chamber 103-1. When the negative pressure chamber 103-1 is in a closed state, the increase in volume will reduce the pressure of the negative pressure chamber 103-1.

[0024] An adjusting component 200, disposed on the main component 100, includes a valve component 201 disposed on the surface of the communicating shell 102, and a control valve 2011 sliding within the communicating shell 102. A communicating groove 2011-1 is formed on the surface of the control valve 2011, and a flow channel 102-1 is provided within the communicating shell 102. By moving the control valve 2011, the size of the connecting cross-section between the communicating groove 2011-1 and the flow channel 102-1 can be increased or decreased. The flow channel 102-1 is connected to the drain pipe 101. A threaded post 2012 is rotatably connected within the control valve 2011, and an adjusting knob 2013 is fixed to the end of the threaded post 2012. The threaded post 2012 is rotatably connected via a threaded connection. Inside the connecting shell 102, an indicator plate 2014 is fixed on one side of the connecting shell 102. The surface of the indicator plate 2014 is provided with a scale, which can indicate the current position of the adjustment knob 2013. By rotating the adjustment knob 2013, the threaded column 2012 can be rotated, thereby causing the threaded column 2012 to move closer to or further away from the connecting shell 102. This causes the threaded column 2012 to drive the control valve 2011 to move, thereby changing the size of the connecting cross section between the connecting groove 2011-1 and the flow channel 102-1. The position of the adjustment knob 2013 can be determined by the scale on the indicator plate 2014, thereby determining the size of the connecting cross section between the connecting groove 2011-1 and the flow channel 102-1.

[0025] Example 2

[0026] Reference Figure 3 , Figure 7 and Figure 10 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0027] Specifically, the adjustment assembly 200 also includes a monitoring component 202 disposed within the communicating shell 102, including a rotating sleeve 2021 rotatably connected within the communicating shell 102. A baffle 2022 is fixed to the surface of the rotating sleeve 2021. A monitoring channel 102-2 is disposed within the communicating shell 102, and the baffle 2022 is located within the monitoring channel 102-2, which can block the monitoring channel 102-2. The monitoring channel 102-2 is a semi-circular groove, and the rotating sleeve 2021 is not located at the center of the monitoring channel 102-2. When the rotating sleeve 2021 moves... When rotated, the baffle 2022 can gradually move away from the monitoring channel 102-2, thereby relieving the blockage of the monitoring channel 102-2. A torsion spring is provided between the rotating sleeve 2021 and the connecting shell 102, so that the baffle 2022 stays in the current state shown in the figure. When the accumulated liquid enters the monitoring channel 102-2, the baffle 2022 can be pushed open, so that the accumulated liquid can flow smoothly in the monitoring channel 102-2. When the flow rate of the accumulated liquid increases, the thrust on the baffle 2022 increases, so that the angle of deflection of the baffle 2022 is larger.

[0028] Specifically, the monitoring component 202 also includes a rotating rod 2023 fixed inside the rotating sleeve 2021. The rotating rod 2023 is rotatably connected inside the communicating shell 102. A pointer 2024 is fixed to the end of the rotating rod 2023. A scale strip 2025 and a protective shell 2026 are fixed to the surface of the communicating shell 102. The protective shell 2026 is transparent, and the position of the pointer 2024 can be accurately observed through the transparent protective shell 2026. The scale strip 2025 has scales on its surface. By indicating different positions on the scale strip 2025 by the pointer 2024, the angle of deflection of the baffle 2022 can be reflected, thereby determining the flow rate of the accumulated liquid. This allows it to be determined whether the flow rate of the accumulated liquid matches the gear.

[0029] Specifically, the adjustment assembly 200 also includes an adjustment component 203 disposed within the connecting shell 102, including an adjustment plate 2031 that slides within the connecting shell 102. The adjustment plate 2031 has a through hole 2031-1 and an adjustment channel 2031-2. A connecting pipe 2032 is fixed within the connecting shell 102 and extends to the negative pressure chamber 103-1. In the current illustrated state, the monitoring channel 102-2 is connected to the liquid guide pipe 105 through the through hole 2031-1.

[0030] Specifically, the adjusting component 203 also includes a push rod 2033 fixed to one side of the adjusting plate 2031, with a button 2034 fixed to the other end of the push rod 2033. A compression spring 2035 is fixed to the other side of the adjusting plate 2031, with the other end of the compression spring 2035 fixed to the inner wall of the communicating shell 102. The compression spring 2035 is in a compressed state. By pressing the button 2034, the push rod 2033 can be pushed, causing the push rod 2033 to push the adjusting plate 2031 to move, thereby causing the adjusting channel 20 on the adjusting plate 2031 to move. 31-2 is connected to monitoring channel 102-2, and through hole 2031-1 is connected to connecting pipe 2032. At this time, the accumulated liquid can enter regulating channel 2031-2 from monitoring channel 102-2, then enter through hole 2031-1 from regulating channel 2031-2, and then enter connecting pipe 2032 from through hole 2031-1, thus entering negative pressure chamber 103-1. When negative pressure chamber 103-1 is in a low pressure state, the accumulated liquid in drainage pipe 101 can be sucked, so that the viscous accumulated liquid can be smoothly drained by drainage pipe 101.

[0031] Specifically, the adjusting component 203 also includes a limiting block 2036 fixed to one side of the adjusting plate 2031. There are two limiting blocks 2036. When the adjusting plate 2031 is pushed so that the limiting block 2036 is pressed against the inner wall of the connecting shell 102, the through hole 2031-1 can be connected to the connecting pipe 2032.

[0032] Example 3

[0033] Reference Figures 1-12This is the third embodiment of the present invention, which is based on the first two embodiments.

[0034] Specifically, the main component 100 also includes a connecting member 106 disposed on the top of the drainage outer bottle 103, including a support tube 1061 fixed to the top of the drainage outer bottle 103, a filter sleeve 1062 fixed to the top of the support tube 1061, the filter sleeve 1062 being filled with filter cotton, and multiple holes being opened on the surface of the filter sleeve 1062, allowing air to enter the filter sleeve 1062 from the support tube 1061, and after being filtered by the filter cotton, the air can be discharged from the holes on the surface of the filter sleeve 1062. A sealing cap 1063 is disposed on the surface of the filter sleeve 1062 for sealing the filter sleeve 1062.

[0035] Specifically, the connecting member 106 also includes a telescopic tube 1064 fixed inside the drainage inner bottle 104. The telescopic tube 1064 is corrugated and can be extended and retracted. The other end of the telescopic tube 1064 is fixed inside the support tube 1061, so that the drainage inner bottle 104 is connected to the support tube 1061 through the telescopic tube 1064. When liquid accumulates in the drainage inner bottle 104, the air in the drainage inner bottle 104 is discharged into the support tube 1061 through the telescopic tube 1064, and then discharged into the air from the support tube 1061 and the filter sleeve 1062.

[0036] Specifically, the drainage outer bottle 103 has a vent hole 103-2 at its bottom. When fluid enters the drainage inner bottle 104, causing the inner bottle 104 to move downwards due to increased gravity, the air below the drainage inner bottle 104 will be discharged through the vent hole 103-2. A first sealing plate 107 is fixed at the bottom of the drainage inner bottle 104. The first sealing plate 107 is made of silicone and is located directly above the vent hole 103-2. Medical personnel can use a syringe to insert the needle through the vent hole 103-2 and then draw out the fluid in the drainage inner bottle 104.

[0037] Specifically, a second sealing plate 108 is fixed to the top of the drainage bottle 103. The second sealing plate 108 is made of silicone. The needle of the syringe can be inserted into the negative pressure chamber 103-1 through a syringe, so that the viscous fluid in the negative pressure chamber 103-1 can be extracted.

[0038] When using this device, to drain abdominal fluid from a patient, first turn the adjustment knob 2013 to the appropriate setting. Then, insert the drainage tube 101 into the patient's abdominal cavity using existing medical means. This allows the fluid to be transported from the drainage tube 101 to the connecting shell 102. The fluid is then transported from the connection between the connecting groove 2011-1 and the flow channel 102-1 to the monitoring channel 102-2. The fluid pushes the baffle 2022, opening it and simultaneously causing the pointer 2024 to deflect. This allows for real-time monitoring of the fluid flow rate, enabling the determination of whether the flow rate matches the setting, thus preventing complications caused by improper flow rate and ensuring treatment safety.

[0039] As the accumulated fluid falls into the drainage inner bottle 104, the overall weight of the drainage inner bottle 104 increases. At this time, the drainage inner bottle 104 will move downward, thereby reducing the air pressure in the negative pressure chamber 103-1. When it is in the later stage of drainage, pressing the button 2034 can push the push rod 2033, which will push the adjusting plate 2031 to move, thereby connecting the adjusting channel 2031-2 and the monitoring channel 102-2 on the adjusting plate 2031. The through hole 2031-1 and the connecting pipe 2032 are connected. At this time, the accumulated liquid can enter the regulating channel 2031-2 from the monitoring channel 102-2, then enter the through hole 2031-1 from the regulating channel 2031-2, and then enter the connecting pipe 2032 from the through hole 2031-1, thus entering the negative pressure chamber 103-1. This allows the negative pressure chamber 103-1 to suck up the viscous liquid, thereby providing stable suction to ensure that the viscous liquid is discharged smoothly.

Claims

1. A peritoneal puncture and drainage device with adjustable drainage volume, characterized in that: include, The main component (100) includes a drainage tube (101), a connecting shell (102) fixed at the end of the drainage tube (101), an outer drainage bottle (103) fixed at the bottom of the connecting shell (102), an inner drainage bottle (104) sliding inside the outer drainage bottle (103), a negative pressure chamber (103-1) provided between the outer drainage bottle (103) and the inner drainage bottle (104), and a liquid guide tube (105) fixed at the top of the inner drainage bottle (104). An adjustment component (200) is disposed on the main component (100) and includes a valve component (201) disposed on the surface of the connecting shell (102) and a control valve (2011) sliding in the connecting shell (102). A connecting groove (2011-1) is provided on the surface of the control valve (2011). A flow channel (102-1) is provided in the connecting shell (102). The flow channel (102-1) is connected to the drain pipe (101). A threaded column (2012) is rotatably connected in the control valve (2011). An adjustment knob (2013) is fixed at the end of the threaded column (2012). An indicator plate (2014) is fixed on one side of the connecting shell (102).

2. The abdominal paracentesis drainage device with adjustable drainage volume as described in claim 1, characterized in that: The adjustment assembly (200) further includes a monitoring component (202) disposed within the communicating shell (102), including a rotating sleeve (2021) rotatably connected within the communicating shell (102), a baffle (2022) fixed on the surface of the rotating sleeve (2021), a monitoring channel (102-2) disposed within the communicating shell (102), and the baffle (2022) located within the monitoring channel (102-2).

3. The abdominal paracentesis drainage device with adjustable drainage volume as described in claim 2, characterized in that: The monitoring component (202) also includes a rotating rod (2023) fixed inside the rotating sleeve (2021), a pointer (2024) fixed at the end of the rotating rod (2023), a scale strip (2025) and a protective shell (2026) fixed on the surface of the connecting shell (102), and the protective shell (2026) is transparent.

4. The abdominal paracentesis drainage device with adjustable drainage volume as described in claim 3, characterized in that: The adjustment assembly (200) further includes an adjustment member (203) disposed in the connecting shell (102), including an adjustment plate (2031) that slides in the connecting shell (102), the adjustment plate (2031) having a through hole (2031-1) and an adjustment channel (2031-2), a connecting pipe (2032) fixed in the connecting shell (102), and the connecting pipe (2032) extending to the negative pressure chamber (103-1).

5. The abdominal paracentesis drainage device with adjustable drainage volume as described in claim 4, characterized in that: The adjusting component (203) also includes a push rod (2033) fixed to one side of the adjusting plate (2031), a button (2034) fixed to the other end of the push rod (2033), a compression spring (2035) fixed to the other side of the adjusting plate (2031), and the other end of the compression spring (2035) fixed to the inner wall of the connecting shell (102).

6. The abdominal paracentesis drainage device with adjustable drainage volume as described in claim 5, characterized in that: The adjusting component (203) also includes a limiting block (2036) fixed to one side of the adjusting plate (2031).

7. The abdominal paracentesis drainage device with adjustable drainage volume as described in claim 6, characterized in that: The main component (100) also includes a connecting piece (106) disposed on the top of the drainage outer bottle (103), including a support tube (1061) fixed to the top of the drainage outer bottle (103), a filter sleeve (1062) fixed on the top of the support tube (1061), the filter sleeve (1062) is filled with filter cotton, and a sealing cap (1063) is disposed on the surface of the filter sleeve (1062).

8. The abdominal paracentesis drainage device with adjustable drainage volume as described in claim 7, characterized in that: The connecting member (106) also includes a telescopic tube (1064) fixed inside the inner drainage bottle (104), and the other end of the telescopic tube (1064) is fixed inside the support tube (1061).

9. The abdominal paracentesis drainage device with adjustable drainage volume as described in claim 1 or 8, characterized in that: The outer drainage bottle (103) has an exhaust hole (103-2) at the bottom, and the inner drainage bottle (104) has a first sealing plate (107) fixed at the bottom.

10. The abdominal paracentesis drainage device with adjustable drainage volume as described in claim 9, characterized in that: The top of the drainage bottle (103) is fixed with a second sealing piece (108).

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