Drainage device for thoracic surgery nursing

Abstract

The invention relates to the technical field of external thoracic drainage, and particularly discloses a drainage device for thoracic surgery nursing, which comprises a bottle body and a collecting cavity, the collecting cavity is arranged on the bottle body, the bottle body is provided with a water seal cavity and a pressure regulating cavity, the collecting cavity is used for collecting hydrops and gas discharged from the thoracic cavity of a patient, and the water seal cavity discharges the gas in the body of the patient in the form of bubbles. The pressure adjusting cavity is used for adjusting and maintaining the negative pressure level of the drainage device, the collecting cavity is connected with a drainage tube, and the monitoring assembly is arranged in the collecting cavity, corresponds to the drainage tube and is used for monitoring the flow of accumulated liquid in the drainage tube and the negative pressure in the collecting cavity and judging whether the drainage tube is blocked or damaged or not. By monitoring the hydrops flow in the drainage tube and the negative pressure state in the collection cavity, whether the drainage tube is blocked or damaged or not is judged according to the hydrops flow and the negative pressure state, and when facing abnormal drainage, medical staff can give an alarm in time to inform the medical staff to quickly judge whether the drainage tube is blocked or is physically damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of external chest drainage, in particular to a drainage device for thoracic surgery nursing. Background Art

[0002] Thoracic surgery is a medical discipline that focuses on the diagnosis and treatment of chest diseases, mainly involving diseases of the lungs, esophagus, mediastinum, chest wall, diaphragm and other organs. In clinical treatment, chest drainage devices are often used to effectively drain pleural effusions (such as pleural effusion, hemothorax caused by blood, and empyema caused by pus), reduce the mechanical pressure on lung tissue and heart, and alleviate the resulting dyspnea and circulatory disorders.

[0003] Closed chest drainage is an important operation technique commonly used in thoracic surgery and plays a key role in the treatment of various chest diseases. By inserting a drainage tube into the chest cavity and connecting a closed drainage device, the gas, liquid or pus in the chest cavity is drained to the outside of the body using gravity or negative pressure suction principles to restore the normal pressure and physiological function of the chest cavity. During chest drainage, in the case of pneumothorax or pleural effusion accompanied by bleeding, blood or other tissue fragments may enter the drainage tube and cause blockage or breakage of the drainage tube, which will not only affect the drainage effect, but may also lead to poor drainage, increased risk of infection, and even affect the patient's postoperative recovery. However, when faced with drainage abnormalities, medical staff find it difficult to quickly and accurately determine whether it is caused by blockage or physical damage to the tube, which affects timely intervention and patient treatment. To this end, we propose a drainage device for thoracic surgery nursing. Summary of the Invention

[0004] The purpose of the present invention is to provide a drainage device for thoracic surgery nursing to solve the problem that when medical staff face drainage abnormalities, they find it difficult to quickly and accurately determine whether it is caused by blockage or physical damage to the pipeline, thereby affecting timely intervention and patient treatment.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a drainage device for thoracic surgery nursing, comprising: a bottle body and a collection chamber, the collection chamber being provided on the bottle body, the bottle body being provided with a water-sealing chamber and a pressure-regulating chamber, the collection chamber being used to collect effusion and gas discharged from the patient's chest cavity, the water-sealing chamber discharging gas in the patient's body in the form of bubbles, the pressure-regulating chamber being used to regulate and maintain the negative pressure level of the drainage device, the collection chamber being connected to a drainage tube, and the regulating chamber being connected to a connecting tube;

[0006] Also includes:

[0007] The monitoring component is arranged in the collection cavity and corresponds to the drainage tube. The monitoring component is used to monitor the flow rate of the drainage tube effusion and the negative pressure value in the collection cavity to determine whether the drainage tube is blocked or damaged;

[0008] The timing component is connected to the bottle body and is connected to the monitoring component. The timing component regularly starts the monitoring component to monitor whether the drainage tube is blocked or damaged;

[0009] The extrusion dredging component is connected to the drainage tube and is used to dredge the blocked drainage tube.

[0010] Among them, the monitoring component includes several groups of electrode parts, and several electrode groups are connected in the collecting chamber. Each group of electrode parts corresponds to the drainage tube, and each group of electrode parts is composed of two electrode sheets, and the two electrode sheets correspond to each other. The electrode sheets are used to monitor the flow rate of the drainage fluid in the drainage tube, and a negative pressure detection component is connected in the collecting chamber.

[0011] Among them, the negative pressure detection part includes a protective plate and a sliding rod. The protective plate is connected to the top of the bottle body. A groove is opened on the protective plate. One end of the sliding rod extends into the collection chamber. A fixed sleeve is connected in the groove, and the sliding rod is slidably connected to the fixed sleeve. The other end of the sliding rod is connected to a limiting plate.

[0012] Among them, the limit plate is connected to the pressure plate, and the groove is connected to the pressure switch 1, which corresponds to the pressure plate.

[0013] Among them, a fixing groove is opened on the sliding rod, a clamping column is connected to the corresponding position of the fixing groove, a horizontal plate is connected in the groove, and the horizontal plate is connected to the clamping column, and a spring is connected between the horizontal plate and the groove.

[0014] The timing component includes a motor 1, which is connected to the groove. The output shaft of the motor 1 is connected to a rotating shaft, which is connected to an eccentric wheel.

[0015] Among them, a movable plate is connected in the groove, the movable plate corresponds to the eccentric wheel, a fixed plate is connected in the groove, a movable column is connected on the movable plate, and the movable column is slidably connected to the fixed plate.

[0016] Among them, the movable column is provided with a second spring, and the second spring is provided between the movable plate and the fixed plate, and the movable column corresponds to the horizontal plate.

[0017] Among them, the extrusion dredging component includes airbag 1 and airbag 2. Airbag 1 is connected to the intubation end of the drainage tube, and airbag 2 is connected to the other end of the drainage tube. The drainage tube is connected to an extrusion piece.

[0018] Among them, the extrusion part includes a fixed tube, which is connected to the drainage tube, and a pressure column is connected to the fixed tube. The pressure column is rotatably connected to the fixed tube, and the pressure column corresponds to airbag 1 and airbag 2, and one end of the pressure column is L-shaped.

[0019] The present invention has at least the following beneficial effects: by providing a monitoring component, a timing group and an extrusion dredging component, the monitoring component is arranged in the collection cavity, and the monitoring component corresponds to the drainage tube, the monitoring component is used to monitor the flow rate of the accumulated fluid in the drainage tube and the negative pressure in the collection cavity, and judge whether the drainage tube is blocked or damaged. By monitoring the accumulated fluid flow in the drainage tube and the negative pressure state in the collection cavity, whether the drainage tube is blocked or damaged is judged according to the accumulated fluid flow and the negative pressure state. When medical staff face drainage abnormalities, they can promptly alarm and notify medical staff, quickly judge whether it is caused by blockage or physical damage to the pipeline, and thus timely intervene in the patient's treatment, thereby preventing treatment delays or complications caused by blockage or leakage;

[0020] The timing component is connected to the bottle body, and the timing component is connected to the monitoring component. The timing component regularly starts the monitoring component to monitor whether the drainage tube is blocked or damaged, thereby reducing the frequency of manual inspections and improving the work efficiency of medical staff;

[0021] The extrusion and dredging component is connected to the drainage tube. The extrusion and dredging component is used to dredge blocked drainage tubes. When the monitoring component detects that the drainage tube is blocked, the extrusion and dredging component can be set to mechanically squeeze the drainage tube to clear the blockage and restore the drainage channel to normal state, thereby preventing the drainage tube from being blocked and causing infection of the patient's wound, thereby ensuring the patient's life safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 for Figure 1 Enlarged view of area A in the middle

[0024] Figure 3 This is a schematic diagram of the bottle structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the monitoring component structure of the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of area B in the middle;

[0027] Figure 6 This is a schematic diagram of the timing component structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the movable column of the present invention;

[0029] Figure 8 This is a schematic diagram of the eccentric wheel structure of the present invention;

[0030] Figure 9 This is a schematic structural diagram of the negative pressure detection component of the present invention;

[0031] Figure 10 This is a schematic diagram of the structure of the extrusion dredging component of the present invention;

[0032] Figure 11 for Figure 10 Enlarged schematic diagram of area C in the middle.

[0033] In the figure: 1. Bottle body; 2. Drainage tube; 3. Collection chamber; 4. Water seal chamber; 5. Pressure regulating chamber; 6. Connecting pipe; 7. Timing assembly; 71. Protection plate; 8. Extrusion and dredging assembly; 9. Groove; 10. Monitoring assembly; 11. Negative pressure detection component; 111. Sliding rod; 12. Electrode sheet; 13. Motor 1; 14. Eccentric wheel; 15. Moving plate; 16. Fixed plate; 17. Moving column; 18. Spring 2; 19. Rotating shaft; 20. Fixed sleeve; 21. Limiting plate; 22. Horizontal plate; 23. Spring 1; 24. Snap-on column; 25. Fixed groove; 26. Pressure plate; 27. Alarm 2; 28. Fixed tube; 29. ​​Pressure column; 30. Airbag 1; 31. Airbag 2; 32. Alarm 1. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1

[0036] See also Figures 1 to 11 The present invention provides a technical solution: a drainage device for thoracic surgery nursing, comprising: a bottle body 1 and a collecting chamber 3. The bottle body 1 is the main container of the entire drainage device, usually made of transparent plastic, which is convenient for observing the changes in the internal liquid. The collecting chamber 3 is arranged on the bottle body 1. The bottle body 1 is provided with a water sealing chamber 4 and a pressure regulating chamber 5. The collecting chamber 3 maintains a negative pressure state to promote drainage. The collecting chamber 3 is used to collect the effusion and gas discharged from the patient's chest cavity. The water sealing chamber 4 discharges the gas in the patient's body in the form of bubbles to prevent air from flowing back into the chest cavity. A certain amount of sterile saline or Sterile water acts as a "one-way valve". When the chest cavity pressure returns to normal or is positive, the water seal prevents outside air from entering the chest cavity, preventing the pneumothorax from worsening. The pressure regulating chamber 5 is used to adjust and maintain the negative pressure level of the drainage device, thereby maintaining a constant negative pressure in the drainage device to ensure effective drainage. The pressure regulating chamber 5 can set a suitable negative pressure value to ensure drainage efficiency while avoiding damage to lung tissue. The collecting chamber 3 is connected to a drainage tube 2, which is inserted into the patient's chest cavity through a drainage tube 2 to form a drainage path. The regulating chamber is connected to a connecting tube 6, which is connected to the negative pressure suction device;

[0037] Also includes:

[0038] The monitoring component 10 is arranged in the collecting chamber 3 and corresponds to the drainage tube 2. The monitoring component 10 is used to monitor the flow rate of the accumulated fluid in the drainage tube 2 and the negative pressure in the collecting chamber 3 to determine whether the drainage tube 2 is blocked or damaged. By monitoring the accumulated fluid flow in the drainage tube 2 and the negative pressure in the collecting chamber 3, the flow rate and negative pressure of the accumulated fluid can be used to determine whether the drainage tube 2 is blocked or damaged. When medical staff encounter drainage abnormalities, they can promptly alarm and notify medical staff to quickly determine whether it is caused by blockage or physical damage to the pipeline, thereby timely intervening in the patient's treatment, thereby preventing treatment delays or complications caused by blockage or leakage;

[0039] The timing component 7 is connected to the bottle body 1 and is connected to the monitoring component 10. The timing component 7 regularly activates the monitoring component 10 to monitor whether the drainage tube 2 is blocked or damaged, thereby reducing the frequency of manual inspections and improving the work efficiency of medical staff;

[0040] The extrusion dredging component 8 is connected to the drainage tube 2. The extrusion dredging component 8 is used to dredge the blocked drainage tube 2. When the monitoring component 10 detects that the drainage tube 2 is blocked, the extrusion dredging component 8 can be set to mechanically squeeze the drainage tube 2 to remove the blockage and restore the drainage channel to a smooth state, thereby preventing the drainage tube 2 from being blocked and causing the patient's wound to be infected, thereby ensuring the patient's life safety.

[0041] The monitoring component 10 includes several groups of electrode parts, and several electrode groups are connected in the collecting chamber 3. Each group of electrode parts corresponds to the drainage tube 2, and each group of electrode parts consists of two electrode sheets 12, and the two electrode sheets 12 correspond to each other. The electrode sheets 12 are used to monitor the flow rate of the drainage fluid in the drainage tube 2. A negative pressure detection component 11 is connected to the collecting chamber 3. When the drainage fluid flows between the two electrode sheets 12, when the drainage fluid flows between the two oppositely arranged electrode sheets 12, the drainage fluid acts as a conductor to form a current loop between the two electrodes. The more drainage fluid, the larger the contact area, the stronger the conductivity, the higher the current value, the smaller the contact area between the electrodes, and the current decreases. When the drainage fluid decreases, the number of electrode sheets 12 contacted by the drainage fluid decreases, which reduces the current, and thus it can be judged that the drainage tube 2 is blocked or broken.

[0042] The negative pressure detection part 11 includes a protective plate 71 and a sliding rod 111. The protective plate 71 is connected to the top of the bottle body 1. A groove 9 is opened on the protective plate 71. By setting the protective plate 71, the sliding rod 111 can be protected, thereby extending the service life of the sliding rod 111. One end of the sliding rod 111 extends into the collecting chamber 3. A fixing sleeve 20 is connected in the groove 9, and the sliding rod 111 is slidably connected to the fixing sleeve 20. The other end of the sliding rod 111 is connected to the limiting plate 21. By setting the limiting plate 21, the sliding rod 111 can be limited, thereby preventing the sliding rod 111 from separating from the fixing sleeve 20 when sliding downward. When the negative pressure in the collecting chamber 3 is within the standard range, the negative pressure in the collecting chamber 3 presses the sliding rod 111. When the negative pressure in the collecting chamber 3 decreases, the sliding rod 111 slides downward in the fixing sleeve 20 under the action of gravity.

[0043] The limit plate 21 is connected to a pressure plate 26, and the groove 9 is connected to a pressure switch 1, which corresponds to the pressure plate 26. The bottle body 1 is connected to an alarm 1 32 and an alarm 2 27. When the pressure plate 26 triggers the pressure switch 1, the alarm 2 27 is triggered.

[0044] When the electrode sheet 12 detects that the drainage volume of the drainage fluid is reduced, and the sliding rod 111 moves downward to drive the pressure plate 26 on the limit plate 21 to move, the pressure plate 26 triggers the pressure switch 1, thereby judging that the drainage tube 2 is damaged, and the alarm 27 is triggered.

[0045] When the electrode sheet 12 detects that the drainage volume of the drainage fluid is reduced and the sliding rod 111 does not slide downward, it is judged that the negative pressure in the drainage cavity is decreasing, and then it is judged that the drainage tube 2 is blocked, and then the alarm 1 32 is triggered. Then the medical staff can directly judge what kind of fault has occurred in the drainage tube 2 based on the alarm 1 32 and the alarm 2 27, and then directly work, so that the medical staff can deal with it in time to prevent the patient's wound from being infected.

[0046] A fixing groove 25 is provided on the sliding rod 111, and a clamping column 24 is connected to the corresponding position of the fixing groove 25. A cross plate 22 is connected in the groove 9, and the cross plate 22 is connected to the clamping column 24. A spring 23 is connected between the cross plate 22 and the groove 9. When the negative pressure in the collecting chamber 3 is monitored, the cross plate 22 is squeezed to move laterally, and the cross plate 22 squeezes the spring. The movement of the cross plate 22 drives the clamping column 24 to move laterally, so that the clamping column 24 is separated from the fixing groove 25 on the sliding rod 111, so that if the drainage tube 2 is broken, When the drainage tube 2 is damaged, the sliding rod 111 slides in the fixing groove 25. The sliding rod 111 can be fixed by setting the fixing groove 25 and the clamping column 24. Then, when the clamping column 24 and the fixing groove 25 are disengaged, it can be judged by the position of the sliding rod 111 whether the drainage tube 2 is broken. When the negative pressure monitoring in the collecting chamber 3 is ended, the spring 1 23 returns to its original position, and the spring force causes the cross plate 22 to return to its original position, and then the cross plate 22 drives the clamping column 24 to return to its original position, so that the clamping column 24 is clamped with the fixing groove 25.

[0047] The timing assembly 7 includes a motor 13, which is connected to the groove 9. By setting the groove 9, the motor 13 can be protected, thereby extending the service life of the motor 13. The output shaft of the motor 13 is connected to a rotating shaft 19, and the rotating shaft 19 is connected to an eccentric wheel 14. A movable plate 15 is connected in the groove 9, and the movable plate 15 corresponds to the eccentric wheel 14. A fixed plate 16 is connected in the groove 9, and a movable column 17 is connected to the movable plate 15. The movable column 17 is slidably connected to the fixed plate 16. When the patient undergoes drainage treatment, the motor 13 is started, and the motor 13 drives the rotating shaft 19 to rotate, and the rotating shaft 19 drives the eccentric wheel 14 to rotate. The eccentric wheel 14 rotates and presses the movable plate 15 to move laterally. The movable plate 15 is like a moving plate that drives the movable column 17 to move laterally on the fixed plate 16, and then the movable column 17 can perform timed squeezing on the horizontal plate 22, and thus the negative pressure in the collection chamber 3 can be monitored at regular intervals.

[0048] A second spring 18 is provided on the movable column 17, and the second spring 18 is provided between the movable plate 15 and the fixed plate 16. The movable column 17 corresponds to the horizontal plate 22. When the eccentric wheel 14 moves the movable plate 15, the movable plate 15 drives the movable plate 15 to move horizontally while squeezing the second spring 18. When the eccentric wheel 14 is separated from the movable plate 15, the second spring 18 is restored, and then the spring force drives the movable plate 15 to return to its original position, thereby facilitating the repeated movement of the movable column 17 on the movable plate 15, thereby ensuring that the negative pressure in the collecting chamber 3 can be repeatedly monitored at regular intervals.

[0049] Example 2

[0050] The extrusion and dredging component 8 includes airbag 1 30 and airbag 2 31. Airbag 1 30 is connected to the intubation end of the drainage tube 2, and airbag 2 31 is connected to the other end of the drainage tube 2. An extrusion piece is connected to the drainage tube 2. When the intubation end of the drainage tube 2 is blocked, the airbag 1 30 is squeezed by the extrusion piece to dredge the intubation end of the drainage tube 2. When the other end of the drainage tube 2 is blocked, the airbag 2 31 is squeezed by the extrusion piece to dredge the other end of the drainage tube 2.

[0051] The extrusion member includes a fixed tube 28, which is connected to the drainage tube 2. A pressure column 29 is connected to the fixed tube 28. The pressure column 29 is rotatably connected to the fixed tube 28, and the pressure column 29 corresponds to the airbag 1 30 and the airbag 2 31. One end of the pressure column 29 is L-shaped. When the intubation end of the drainage tube 2 is blocked, the medical staff rotates the pressure column 29 to make the pressure column 29 rotate counterclockwise in the fixed tube 28, so that the pressure column 29 protrudes from the corresponding airbag 1 30, and then presses the pressure column 29, so that the pressure column 29 squeezes the airbag 1 30, thereby pressing the pressure column 29. At the same time, airbag 1 30 squeezes the intubation end of the drainage tube 2, thereby clearing the intubation end of the drainage tube 2. When the other end of the drainage tube 2 is blocked, the medical staff rotates the pressure column 29 to make the pressure column 29 rotate clockwise in the fixed tube 28, thereby making the pressure column 29 protrude from the corresponding airbag 2 31, and then presses the pressure column 29 to make the pressure column 29 squeeze the airbag 2 31, thereby making the airbag 2 31 squeeze the other end of the drainage tube 2, thereby clearing the other end of the drainage tube 2, thereby preventing the drainage tube 2 from being blocked and causing the patient's wound to be infected.

[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A drainage device for thoracic surgery nursing, comprising: The bottle body and the collection chamber are provided on the bottle body. The bottle body is provided with a water seal chamber and a pressure regulating chamber. The collection chamber is used to collect the effusion and gas discharged from the patient's chest cavity. The water seal chamber discharges the gas in the patient's body in the form of bubbles. The pressure regulating chamber is used to adjust and maintain the negative pressure level of the drainage device. The collection chamber is connected to the drainage tube, and the regulating chamber is connected to the connecting tube. It is characterized by: further comprising: A monitoring component is provided in the collection chamber and corresponds to the drainage tube. The monitoring component is used to monitor the flow rate of the drainage tube effusion and the negative pressure value in the collection chamber to determine whether the drainage tube is blocked or damaged; A timing component is connected to the bottle body and is connected to the monitoring component. The timing component regularly activates the monitoring component to monitor whether the drainage tube is blocked or damaged; An extrusion dredging component is connected to the drainage tube and is used to dredge a blocked drainage tube.

2. The drainage device for thoracic surgery nursing according to claim 1, characterized in that: The monitoring component includes several groups of electrode parts, several of the electrode groups are connected in the collection chamber, each group of the electrode parts corresponds to the drainage tube, and each group of the electrode parts is composed of two electrode sheets, and the two electrode sheets correspond to each other. The electrode sheets are used to monitor the flow rate of the drainage fluid in the drainage tube, and a negative pressure detection component is connected in the collection chamber.

3. The drainage device for thoracic surgery nursing according to claim 2, characterized in that: The negative pressure detection component includes a protective plate and a sliding rod. The protective plate is connected to the top of the bottle body. A groove is provided on the protective plate. One end of the sliding rod extends into the collection chamber. A fixed sleeve is connected to the groove, and the sliding rod is slidably connected to the fixed sleeve. The other end of the sliding rod is connected to a limiting plate.

4. The drainage device for thoracic surgery nursing according to claim 3, characterized in that: The limit plate is connected to a pressure plate, the groove is connected to a pressure switch 1, and the pressure switch 1 corresponds to the pressure plate.

5. The drainage device for thoracic surgery nursing according to claim 4, characterized in that: A fixing groove is provided on the sliding rod, a clamping column is connected to the corresponding position of the fixing groove, a horizontal plate is connected in the groove, and the horizontal plate is connected to the clamping column, and a spring is connected between the horizontal plate and the groove.

6. The drainage device for thoracic surgery nursing according to claim 1, characterized in that: The timing component includes a motor 1, which is connected to the groove. The output shaft of the motor 1 is connected to a rotating shaft, and the rotating shaft is connected to an eccentric wheel.

7. The drainage device for thoracic surgery nursing according to claim 6, characterized in that: A movable plate is connected in the groove, and the movable plate corresponds to the eccentric wheel. A fixed plate is connected in the groove, and a movable column is connected on the movable plate, and the movable column is slidably connected to the fixed plate.

8. The drainage device for thoracic surgery nursing according to claim 7, characterized in that: The movable column is sleeved with a second spring, and the second spring is arranged between the movable plate and the fixed plate. The movable column corresponds to the horizontal plate.

9. The drainage device for thoracic surgery nursing according to claim 1, characterized in that: The extrusion dredging component includes airbag 1 and airbag 2, airbag 1 is connected to the intubation end of the drainage tube, and airbag 2 is connected to the other end of the drainage tube. The drainage tube is connected to an extrusion piece.

10. The drainage device for thoracic surgery nursing according to claim 9, characterized in that: The extrusion piece includes a fixed tube, which is connected to the drainage tube. The fixed tube is connected to a pressure column, which is rotatably connected to the fixed tube and corresponds to airbag 1 and airbag 2. One end of the pressure column is L-shaped.

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