Hydrops suction device for mediastinal tumor operation

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an effusion suction device for a mediastinal tumor surgery, which comprises a main body, and the upper end of the main body is communicated with a negative pressure tube and a drainage tube; the pressure relief part comprises a pressure relief pipe, and a lifting plate, an elastic rope and a sealing plug are arranged in an inner cavity of the pressure relief pipe; the quick dismounting part comprises a liquid accumulation barrel; the ventilation part comprises an airtight plug and a ventilation pipe; the communicating part comprises a sealing plate a, a hook plate is arranged on the sealing plate a, and a sealing plate b and a pull hook are arranged in the liquid accumulation barrel; and the driving part comprises an S-shaped rod, and the upper end of the S-shaped rod is connected with a pull rope b. The maximum threshold value of the negative pressure in the main body can be set, when the negative pressure in the main body exceeds the threshold value, the main body can be automatically communicated with outside air, the effusion barrel can be communicated with the main body to share effusion in the main body, when the effusion is too much, only the effusion barrel is detached to discharge the effusion, shutdown is not needed for operation, and treatment operation is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of medical appliances, and in particular relates to a fluid aspiration device for mediastinal tumor surgery. Background Art

[0002] After resection of mediastinal tumors (such as thymomas and neurogenic tumors), a suction drainage device is often used to remove fluid from the wound area to prevent it from affecting the patient's recovery. Thoracic suction drainage is widely used as a treatment for hemothorax, pneumothorax, and empyema, as well as after thoracotomy, and plays a vital role in disease treatment. However, existing suction devices still have some problems when used.

[0003] First of all, the mediastinum is a closed cavity for the heart, large blood vessels, and trachea, and its negative pressure tolerance threshold is extremely low. The suction devices in the existing technology usually use an electric negative pressure pump with open-loop control. The moment the suction is started, the pressure in the negative pressure bottle will drop sharply. This immediate high-threshold negative pressure can easily lead to overpressure. If the suction tip is close to the blood vessels during use, it will cause harm to the patient.

[0004] Secondly, the capacity of the negative pressure bottle is limited. When in use, it is often necessary to drain the accumulated fluid in the negative pressure bottle or replace it with a new one. Traditional suction devices usually need to go through multiple steps such as stopping suction → disassembling the liquid storage tank → draining the fluid → reinstalling when replacing or draining the accumulated fluid. During this period, the accumulated fluid in the patient's body cannot be effectively discharged, which affects the progress of the treatment. Summary of the Invention

[0005] The purpose of the present invention is to provide a fluid suction device for mediastinal tumor surgery, which can set a maximum threshold of negative pressure in the main body, and automatically connect with the external gas when the negative pressure in the main body exceeds the threshold. It can also connect the fluid accumulation bucket with the main body to share the fluid accumulation in the main body, and when there is too much fluid accumulation, only the fluid accumulation bucket needs to be removed to discharge the liquid, without stopping the machine for operation, thereby facilitating the treatment operation.

[0006] The technical solutions adopted by the present invention are as follows: A fluid aspiration device for mediastinal tumor surgery, comprising: The main body, the upper end of which is connected to a negative pressure tube and a drainage tube; The pressure relief part includes a pressure relief pipe connected to the upper end of the main body, a lifting plate is provided in the inner cavity of the pressure relief pipe, the lower end of the lifting plate is fixedly connected to an elastic rope, and the lower end of the elastic rope is fixedly connected to a sealing plug; The quick-release part includes a liquid accumulation barrel, which is arranged in the right inner cavity of the main body; The ventilation part includes an airtight plug, which is arranged on the right side of the inner cavity of the main body. A ventilation pipe is arranged at the upper end of the liquid accumulation barrel, and the upper end of the ventilation pipe is in contact with the lower end of the airtight plug; The connecting part includes a sealing plate a, which is arranged at the lower right end of the main body cavity, and a hook plate is arranged on the right side of the sealing plate a, and a sealing plate b is arranged on the left side of the inner cavity of the liquid accumulation barrel. The left end of the sealing plate b is fixedly connected with a draw hook, and the draw hook is in contact with the lower end of the hook plate; The driving part includes an S-shaped rod, which is rotatably connected to the lower end of the inner cavity of the liquid accumulation barrel, and the upper end of the S-shaped rod is fixedly connected to a pull rope b, and the upper end of the pull rope b is connected to the sealing plate b; Among them, when the liquid accumulation barrel is inserted into the main body, the vent pipe pushes open the airtight plug, so that the liquid accumulation barrel is connected with the upper end of the main body, and at the same time the hook plate is connected with the pull hook. At this time, the S-shaped rod is rotated to pull the pull rope b and the sealing plate b to move, driving the sealing plate a to extend into the liquid accumulation barrel, so that the main body is connected with the lower end of the liquid accumulation barrel.

[0007] In a preferred embodiment, a hanging basket is movably sleeved on the outer side of the main body, and an entrance and exit are opened on the upper front end of the main body. The right side of the upper end of the main body is connected to the negative pressure tube, and the left side is connected to the drainage tube.

[0008] In a preferred embodiment, a through groove is provided in the middle of the upper end of the main body, and the pressure relief pipe is fixedly connected to the outer ring of the through groove and is communicated with the through groove. The pressure relief part also includes a dustproof net, which is fixedly connected to the upper end inlet of the pressure relief pipe. A limiting rod is fixedly connected to the left side of the inner cavity of the pressure relief pipe, and the lifting plate is slidably connected to the outer ring of the limiting rod, and the left and right ends of the lifting plate are both in contact with and connected to the inner cavity wall of the pressure relief pipe.

[0009] In a preferred embodiment, the pressure relief part also includes a screw rod, which is rotatably connected to the right side of the inner cavity of the pressure relief pipe, the upper end of the screw rod extends out of the pressure relief pipe, and the outer ring of the middle section of the screw rod is threadedly connected to the middle part of the right end of the lifting plate. A through groove is opened on the right side of the pressure relief pipe, and a perspective plate is fixedly connected in the through groove. Two sets of elastic ropes are fixedly connected to the lower end of the lifting plate, and the lower ends of the two sets of elastic ropes are fixedly connected to sealing plugs, and the upper end of the sealing plug is in contact with the outlet of the lower end of the pressure relief pipe.

[0010] In a preferred embodiment, a cavity is provided on the right side of the lower end of the main body, and the liquid collection bucket is movably inserted in the cavity. The quick-release part also includes a handle, which is arranged in the middle of the lower end of the liquid collection bucket, and the left and right sides of the upper end of the handle are fixedly connected to a pull rope a, and the upper ends of the pull rope a are extended into the inner cavity of the liquid collection bucket and are fixedly connected to an insert block, which passes through the liquid collection bucket and is movably inserted in the cavity at the lower end of the main body, and one end of the insert block extending into the inner cavity of the liquid collection bucket is fixedly connected to a spring a, and the other end of the spring a is fixedly connected to the middle of the inner cavity of the liquid collection bucket, and a drain outlet is provided at the upper end of the liquid collection bucket.

[0011] In a preferred embodiment, the ventilation part also includes a connecting tube, which is connected to the upper right end of the inner cavity of the main body, and the lower end outlet of the connecting tube is placed above the cavity at the lower end of the main body. The inner cavity of the connecting tube is fixedly connected to the mounting frame, and the lower end of the airtight plug is slidably connected to the middle of the mounting frame.

[0012] In a preferred embodiment, the middle outer ring of the airtight plug is fixedly connected to a convex ring, and the convex ring is slidably connected to the inner cavity of the mounting frame. The ventilation part also includes a spring b, which is fixedly connected to the upper end of the convex ring of the outer ring of the airtight plug, and the upper end of the spring b is fixedly connected to the upper end of the inner cavity of the mounting frame. The lower end of the airtight plug passes through the mounting frame and is placed below the mounting frame. The upper end of the liquid accumulation barrel is connected to a ventilation pipe, the upper end of the ventilation pipe is in contact with the lower end of the airtight plug, and the outer ring of the ventilation pipe is movably inserted into the inner cavity of the connecting pipe.

[0013] In a preferred embodiment, the lower right end of the inner cavity of the main body is connected to a pipeline, and the outlet of the pipeline faces the liquid accumulation barrel, and the part of the liquid accumulation barrel in contact with the pipeline is provided with a through hole, and the through hole is connected to the outlet of the pipeline, and the connecting part also includes a fixed frame, and the sealing plate a is slidably connected to the inner cavity of the fixed frame, and the part of the sealing plate a located in the inner cavity of the fixed frame is fixedly connected to a spring c, and the other end of the spring c is fixedly connected to the middle of the inner cavity of the fixed frame, and the middle of the right side of the sealing plate a close to the liquid accumulation barrel is rotatably connected to the hook plate.

[0014] In a preferred embodiment, the connecting part also includes a limiting frame, the inner cavity of the limiting frame is slidably connected to a sliding rod, the left end of the sliding rod extends out of the limiting frame and is fixedly connected to the sealing plate b, and the outer ring of the left end of the sealing plate b is in contact with the through hole at the left end of the liquid accumulation barrel, and the middle part of the left end of the sealing plate b is fixedly connected to the pull hook, the upper end of the pull hook is in contact with the lower end of the left side of the hook plate, the right end of the sliding rod is fixedly connected to the spring d, and the right end of the spring d is fixedly connected to the middle part of the inner cavity of the limiting frame.

[0015] In a preferred embodiment, a through hole is provided at the lower end of the liquid accumulation bucket, and the S-shaped rod is rotatably connected in the through hole, the upper end of the S-shaped rod is fixedly connected to a pull rope b, the upper end of the pull rope b passes through the limit frame and is fixedly connected to the right end of the sliding rod, the lower end of the S-shaped rod extending out of the inner cavity of the liquid accumulation bucket is slidably connected to a positioning block, one end of the positioning block is located in the inner cavity of the S-shaped rod and is fixedly connected to a spring e, the other end of the spring e is fixedly connected to the inner cavity of the S-shaped rod, the lower end of the liquid accumulation bucket is fixedly connected to a positioning plate at the outer edge of the S-shaped rod, and the part of the positioning block extending out of the S-shaped rod is movably inserted into the positioning plate.

[0016] The technical effects achieved by the present invention are: The pressure relief portion of the present invention can set a maximum threshold value of the negative pressure in the main body, and when the negative pressure in the main body exceeds the threshold value, it automatically communicates with the outside air to release the negative pressure in the main body, thereby avoiding excessive negative pressure and damage to the patient's tissues; when in use, the height of the lifting plate is adjusted to stretch the elastic rope to adjust the maximum negative pressure threshold that the main body can withstand. If the negative pressure formed by the negative pressure tube in the main body is too large, resulting in the external air pressure being greater than the elastic force of the elastic rope, the external air pressure will push the sealing plug down, and the main body will now be connected to the outside air, thereby adjusting the negative pressure strength in the main body. After the adjustment is completed, the elastic force of the elastic rope should be greater than the external air pressure strength, so that the sealing plug can be pulled back to its original position, thereby avoiding affecting the negative pressure environment in the main body; The venting portion and the communicating portion of the present invention can connect the liquid accumulation barrel with the main body to share the accumulated liquid in the main body. When the accumulated liquid is too much, only the liquid accumulation barrel needs to be removed to discharge the liquid without stopping the machine for operation, which is convenient for the treatment operation. When in use, the liquid accumulation barrel is inserted into the inner cavity of the main body, so that the venting pipe pushes up the airtight plug, so that the upper end of the liquid accumulation barrel is connected with the main body, and then the retractor comes into contact with the hook plate. At this time, the retractor is controlled to move, so that the sealing plate a is separated from the main body and enters the inner cavity of the liquid accumulation barrel, so that the lower end of the liquid accumulation barrel is connected with the main body, and the upper and lower ends are connected to form a communicating vessel, so that the liquid accumulation barrel can share the accumulated liquid in the main body. When the accumulated liquid accumulates too much and needs to be discharged, it is only necessary to drive the sealing plate a to reset, so that the lower end of the main body is re-sealed, and then the liquid accumulation barrel is pulled out to reset the airtight plug, so that the main body is in a sealed state again. Then the accumulated liquid in the taken out liquid accumulation barrel is discharged, and it is reinserted into the main body to complete the discharge of the accumulated liquid. There is no need to stop the operation during the process, so as to avoid affecting the treatment process of the patient. The driving part and quick-release part of the present invention can realize the rapid disassembly and fixation of the liquid collection bucket, ensuring the stability of the device; when in use, when the liquid collection bucket is inserted into the main body, the limiting part of the quick-release part will be stuck at the lower end of the liquid collection bucket, and the S-shaped rod can be rotated at the same time, and the movement of the sealing plate b and the pull hook can be controlled by the pull rope to realize the connection between the liquid collection bucket and the main body. When disassembling, it is only necessary to control the S-shaped rod to reset and drive the limiting part of the quick-release part to retract to complete the disassembly of the liquid collection bucket, thereby realizing the rapid disassembly and installation of the liquid collection bucket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a bottom view schematic diagram of the hanging basket of the present invention; Figure 3 It is a structural diagram of the main body of the present invention; Figure 4 It is a schematic cross-sectional view of the main body of the present invention; Figure 5 is a schematic cross-sectional view of the pressure relief portion of the present invention; Figure 6 It is a schematic diagram of the position of the liquid accumulation bucket in the present invention; Figure 7 It is a cross-sectional schematic diagram of the liquid accumulation barrel of the present invention; Figure 8 yes Figure 7 Enlarged view of point A in the middle; Figure 9 It is a structural schematic diagram of the ventilation portion of the present invention; Figure 10 It is a structural schematic diagram of the liquid accumulation barrel in the present invention; Figure 11 Schematic diagram of the structure of the sealing plate a in the present invention; Figure 12 It is a schematic right view of the sealing plate a in the present invention; Figure 13 Schematic diagram of the connection between sealing plate a and sealing plate b in the present invention; Figure 14 It is a structural schematic diagram of the sealing plate b in the present invention; Figure 15 It is a schematic diagram of the position of the driving part in the present invention; Figure 16 It is a bottom view schematic diagram of the driving part of the present invention; Figure 17 This is a rendering of the moving state of the sealing plate a and the sealing plate b in the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows: 10. Main body; 11. Hanging basket; 12. Entrance and exit; 13. Negative pressure pipe; 14. Drainage pipe; 20. Pressure relief unit; 21. Pressure relief pipe; 22. Dust screen; 23. Lifting plate; 24. Limit rod; 25. Screw rod; 26. Perspective plate; 27. Elastic rope; 28. Sealing plug; 30. Quick release unit; 31. Liquid collection bucket; 32. Handle; 33. Drawstring a; 34. Insert block; 35. Spring a; 36. Drain outlet; 40. Ventilation part; 41. Connecting pipe; 42. Airtight plug; 43. Mounting frame; 44. Spring b; 45. Ventilation pipe; 50. Connecting portion; 51. Fixing frame; 52. Sealing plate a; 53. Spring c; 54. Hook plate; 55. Limiting frame; 56. Sliding rod; 57. Sealing plate b; 58. Draw hook; 59. Spring d; 60. Driving unit; 61. S-shaped rod; 62. Pull rope b; 63. Positioning block; 64. Spring e; 65. Positioning plate. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" 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 a preferred embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0022] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0023] Please see the attached Figures 1 to 6 , Figures 9 and 10 , Figures 13 to 15 As shown, this embodiment provides a fluid aspiration device for mediastinal tumor surgery, comprising: The main body 10 has a negative pressure tube 13 and a drainage tube 14 connected to its upper end; The pressure relief portion 20 includes a pressure relief pipe 21 connected to the upper end of the main body 10. A lifting plate 23 is provided in the inner cavity of the pressure relief pipe 21. The lower end of the lifting plate 23 is fixedly connected to an elastic cord 27. The lower end of the elastic cord 27 is fixedly connected to a sealing plug 28. The quick-release portion 30 includes a liquid storage barrel 31 , which is disposed in the right inner cavity of the main body 10 ; The vent portion 40 includes an airtight plug 42, which is disposed on the right side of the inner cavity of the main body 10. A vent pipe 45 is disposed at the upper end of the liquid accumulation barrel 31, and the upper end of the vent pipe 45 is in contact with the lower end of the airtight plug 42; The connecting portion 50 includes a sealing plate a52, which is disposed at the lower right end of the inner cavity of the main body 10, and a hook plate 54 is disposed on the right side of the sealing plate a52. A sealing plate b57 is disposed on the left side of the inner cavity of the liquid accumulation barrel 31, and a retractor 58 is fixedly connected to the left end of the sealing plate b57. The retractor 58 is in contact with the lower end of the hook plate 54; The driving unit 60 includes an S-shaped rod 61, which is rotatably connected to the lower end of the inner cavity of the liquid storage barrel 31 through a sealed bearing, and the upper end of the S-shaped rod 61 is fixedly connected to a pull rope b62, and the upper end of the pull rope b62 is connected to the sealing plate b57; Among them, when the liquid accumulation barrel 31 is inserted into the main body 10, the vent pipe 45 pushes open the airtight plug 42, so that the liquid accumulation barrel 31 is connected with the upper end of the main body 10, and at the same time the hook plate 54 is connected with the hook 58. At this time, the rotating S-shaped rod 61 pulls the pull rope b62 and the sealing plate b57 to move, driving the sealing plate a52 to extend into the liquid accumulation barrel 31, so that the main body 10 is connected with the lower end of the liquid accumulation barrel 31.

[0024] It should be noted that when in use, the negative pressure tube 13 needs to be connected to an external negative pressure device, and the drainage tube 14 needs to be connected to the negative pressure suction port to ensure normal use of the device.

[0025] In this embodiment, when in use, the liquid accumulation barrel 31 is inserted into the inner cavity of the main body 10. At this time, the vent pipe 45 pushes the airtight plug 42 to rise, so that the liquid accumulation barrel 31 and the upper end of the main body 10 are connected to each other. At the same time, the liquid accumulation barrel 31 also pushes the hook plate 54 to retract the inner cavity of the sealing plate a52. Until the liquid accumulation barrel 31 is completely connected to the main body 10, the hook plate 54 is rotated outward and extended, and the hook 58 is inserted into the gap between the hook plate 54 and the sealing plate a52. Then, the S-shaped rod 61 is rotated to drive the pull rope b62 to move, pulling the sealing plate b57 and the hook 58 to move, and then pulling the hook plate 54 and the sealing plate a52 to move, so that the hole at the lower end of the main body 10 and the hole of the liquid accumulation barrel 31 are opened at the same time. The main body 10 and the lower end of the liquid accumulation barrel 31 are connected, so that the liquid accumulation barrel 31 is connected to both the upper and lower ends of the main body 10. The principle of the communicating vessel can be used to allow the accumulated liquid in the inner cavity of the main body 10 to flow into the liquid accumulation barrel 31 for collection. When the accumulated liquid needs to be discharged, it is only necessary to drive the S-shaped rod 61 to reset, so that the sealing plate b57 and the sealing plate a52 are reset, and the main body 10 and the liquid accumulation barrel 31 are reset to a sealed state. Then, the liquid accumulation barrel 31 is removed and pulled downward. At this time, the airtight plug 42 will reset, maintaining the sealed state of the inner cavity of the main body 10. The accumulated liquid in the liquid accumulation barrel 31 is then discharged and then inserted back into the main body 10 to collect the accumulated liquid, thereby achieving the discharge of accumulated liquid without stopping the machine. During normal use, if the negative pressure in the main body 10 is too high and exceeds a threshold value, the external atmospheric pressure will push the sealing plug 28 down to push the pressure relief pipe 21 open, thereby improving the negative pressure strength of the inner cavity of the main body 10 and preventing the excessive negative pressure from causing harm to the patient.

[0026] Next, please refer to Figures 1 to 3 The outer side of the main body 10 is movably connected with a hanging basket 11, and an entrance and exit 12 is opened at the upper end of the front of the main body 10. The right side of the upper end of the main body 10 is connected to the negative pressure tube 13, and the left side is connected to the drainage tube 14.

[0027] It should be noted that a hook is provided at the upper rear end of the hanging basket 11 so as to hang the hanging basket 11 beside the patient's bed; A through slot is provided at the lower end of the hanging basket 11, and the through slot is placed below the liquid accumulation barrel 31 to facilitate quick removal of the liquid accumulation barrel 31; The outer ring of the inlet and outlet 12 is threadedly connected with a sealing cover.

[0028] In this embodiment, the device can be hung by the patient's bedside via the hanging basket 11, and then the negative pressure tube 13 is connected to the negative pressure device, and the drainage tube 14 is connected to the negative pressure suction port for drainage. When the interior of the main body 10 needs to be cleaned, it can be cleaned through the entrance 12.

[0029] Next, please refer to Figures 3 to 5 A through groove is opened in the middle of the upper end of the main body 10, and the pressure relief pipe 21 is fixedly connected to the outer ring of the through groove and communicates with the through groove. The pressure relief part 20 also includes a dustproof net 22, which is fixedly connected to the upper end inlet of the pressure relief pipe 21. The left side of the inner cavity of the pressure relief pipe 21 is fixedly connected to the limit rod 24, and the lifting plate 23 is slidably connected to the outer ring of the limit rod 24, and the left and right ends of the lifting plate 23 are both in contact with the inner cavity wall of the pressure relief pipe 21; The pressure relief part 20 also includes a screw rod 25, which is rotatably connected to the right side of the inner cavity of the pressure relief pipe 21 through a sealed bearing. The upper end of the screw rod 25 extends out of the pressure relief pipe 21, and the outer ring of the middle section of the screw rod 25 is threadedly connected to the middle part of the right end of the lifting plate 23. A through groove is provided on the right side of the pressure relief pipe 21, and a perspective plate 26 is fixedly connected to the through groove. Two groups of elastic ropes 27 are fixedly connected to the lower end of the lifting plate 23. The lower ends of the two groups of elastic ropes 27 are fixedly connected to sealing plugs 28, and the upper ends of the sealing plugs 28 are in contact with the outlet of the lower end of the pressure relief pipe 21.

[0030] It should be noted that the lifting plate 23 is only connected to the inner wall of the pressure relief pipe 21 on the left and right sides, and is not in contact with the front and back sides, so as to allow the airflow to pass through the pressure relief pipe 21 into the main body 10; The elastic kinetic energy of the elastic cord 27 should be greater than the attraction generated by the negative pressure in the cavity of the main body 10 under normal conditions. This is intended to ensure that only when the negative pressure in the main body 10 is excessively high will the air pressure push the sealing plug 28 open, thereby reducing the negative pressure in the cavity of the main body 10 and preventing excessive negative pressure from causing harm to the patient. A scale bar is provided on the outside of the perspective plate 26. This is designed to pre-tension the elastic cord 27 by adjusting the height of the lifting plate 23, thereby increasing the force required for the sealing plug 28 to be pushed open by the air pressure. Furthermore, by adjusting the height of the lifting plate 23, a threshold that the negative pressure cannot exceed can be set. Once the threshold is exceeded, the negative pressure within the main body 10 is sufficient to cause the air pressure to push the sealing plug 28 downward and open. The portion of the upper end of the screw rod 25 extending out of the pressure relief pipe 21 is provided with a handle; Preferably, in order to ensure that the lifting plate 23 can be fixed at the set height after the screw rod 25 adjusts the height of the lifting plate 23, a limiting component (such as a fastening nut) should be provided on the outer ring of the upper end of the screw rod 25 to fix the screw rod 25 and prevent the rebound force of the elastic rope 27 from driving the screw rod 25 to rotate through the lifting plate 23, thereby affecting the stability of the set threshold value (not shown in the figure, and this is a common technical structure for fixing the screw rod 25 in the prior art, which will not be elaborated here).

[0031] In this embodiment, during use, the rotating screw 25 drives the lifting plate 23 up and down, adjusting the tightness of the elastic cord 27, and thus adjusting the threshold of negative pressure within the main body 10. When the negative pressure within the main body 10 exceeds the preset threshold, atmospheric pressure pushes the sealing plug 28 down, further stretching the taut elastic cord 27 downward. The pressure relief tube 21 connects the main body 10 to the outside atmosphere, allowing outside air to enter the main body 10, thereby reducing the intensity of the negative pressure. By adjusting the height of the lifting plate 23, medical staff can precisely set the negative pressure threshold based on the patient's specific condition and surgical requirements, ensuring the safety and effectiveness of the surgical process.

[0032] Next, please refer to Figures 6 to 10 A cavity is provided on the right side of the lower end of the main body 10, and the liquid storage bucket 31 is movably inserted in the cavity. The quick-release part 30 also includes a handle 32, which is arranged in the middle of the lower end of the liquid storage bucket 31, and the left and right sides of the upper end of the handle 32 are fixedly connected to pull ropes a33, and the upper ends of the pull ropes a33 are extended into the inner cavity of the liquid storage bucket 31 and are fixedly connected to the plug block 34. The plug block 34 passes through the liquid storage bucket 31 and is movably inserted in the cavity at the lower end of the main body 10. One end of the plug block 34 extending into the inner cavity of the liquid storage bucket 31 is fixedly connected to a spring a35, and the other end of the spring a35 is fixedly connected to the middle of the inner cavity of the liquid storage bucket 31. A drain outlet 36 is provided at the upper end of the liquid storage bucket 31.

[0033] It should be noted that the upper end of the insert block 34 is provided with a slope, and the upper end of the slope extends to the upper end of the portion of the insert block 34 located in the inner cavity of the liquid storage barrel 31. This is intended to enable the liquid storage barrel 31 to be inserted into the inner cavity of the main body 10 by relying on the slope of the upper end of the insert block 34 to push the insert block 34 into the inner cavity of the liquid storage barrel 31. A slot adapted to the insert block 34 is provided in the cavity at the lower end of the main body 10 , so that the liquid accumulation bucket 31 can be fixed in the cavity of the main body 10 through the insert block 34 ; The handle 32 is only placed at the lower end of the liquid storage barrel 31 and is not fixedly connected thereto. When removing the liquid storage barrel 31, the handle 32 is simply pulled down to retract the insert 34, and the liquid storage barrel 31 can then be removed from the main body 10. The outer ring of the drain port 36 is provided with a sealing cover.

[0034] In this embodiment, the liquid storage bucket 31 is inserted into the inner cavity of the main body 10 by pushing it upward. During the upward movement, the main body 10 pushes the insert block 34 back into the inner cavity of the liquid storage bucket 31 via the slope at the upper end of the insert block 34. When the liquid storage bucket 31 is fully connected to the main body 10, the spring a35 pushes the insert block 34 outward and snaps into the slot at the lower end of the main body 10, thereby firmly fixing the liquid storage bucket 31 in the cavity of the main body 10. When the liquid storage bucket 31 needs to be removed, the handle 32 is simply pulled down, and the handle 32 pulls the insert block 34 back into the liquid storage bucket 31 via the pull rope a33, at which point the liquid storage bucket 31 can be pulled downward.

[0035] Please refer again Figures 9 and 10 The vent portion 40 further includes a connecting pipe 41, which is connected to the upper right end of the inner cavity of the main body 10, and the lower end outlet of the connecting pipe 41 is placed above the lower end cavity of the main body 10. The inner cavity of the connecting pipe 41 is fixedly connected to a mounting bracket 43, and the lower end of the airtight plug 42 is slidably connected to the middle part of the mounting bracket 43; The middle outer ring of the airtight plug 42 is fixedly connected to a convex ring, and the convex ring is slidably connected to the inner cavity of the mounting frame 43. The vent portion 40 also includes a spring b44, which is fixedly connected to the upper end of the convex ring of the outer ring of the airtight plug 42, and the upper end of the spring b44 is fixedly connected to the upper end of the inner cavity of the mounting frame 43. The lower end of the airtight plug 42 passes through the mounting frame 43 and is placed below the mounting frame 43. The upper end of the liquid accumulation barrel 31 is connected to a vent pipe 45, the upper end of the vent pipe 45 is in contact with the lower end of the airtight plug 42, and the outer ring of the vent pipe 45 is movably inserted into the inner cavity of the connecting pipe 41.

[0036] It should be noted that the upper end of the vent tube 45 is fixedly connected to a diamond-shaped bracket, and the upper end of the bracket contacts the lower end of the airtight plug 42. This is intended to enable the diamond-shaped bracket to push the airtight plug 42 open after the liquid storage barrel 31 is inserted into the main body 10, so that the air pressure in the main body 10 and the liquid storage barrel 31 tend to be consistent. The parts of the vent pipe 45 that contact the main body 10 and the connecting pipe 41 are all provided with sealing gaskets to improve the sealing effect and avoid affecting the negative pressure in the main body 10; The elastic force of spring b44 should be greater than the upper threshold of the negative pressure suction force that can be set in the main body 10 to prevent the airtight plug 42 from being lifted up by the negative pressure when the liquid storage barrel 31 is removed, thereby affecting the negative pressure environment in the main body 10; A cavity tube is provided in the middle of the mounting frame 43 , and the convex ring on the outer ring of the airtight plug 42 and the spring b44 are both provided in the cavity tube.

[0037] In this embodiment, when the liquid storage bucket 31 is inserted into the main body 10, the vent tube 45 pushes the airtight plug 42 upward, thereby maintaining the internal air pressure balance between the main body 10 and the liquid storage bucket 31. When the liquid storage bucket 31 is removed from the internal cavity of the main body 10, the elastic force of the spring b44 presses the airtight plug 42 against the upper end of the vent tube 45, ensuring that the negative pressure environment within the main body 10 is not affected.

[0038] Please refer again Figures 10 to 14 The lower right end of the inner cavity of the main body 10 is connected with a pipeline, and the outlet of the pipeline faces the liquid accumulation barrel 31, and the part of the liquid accumulation barrel 31 in contact with the pipeline is provided with a through hole, and the through hole is connected with the outlet of the pipeline. The communicating portion 50 also includes a fixing frame 51, a sealing plate a52 is slidably connected to the inner cavity of the fixing frame 51, and the part of the sealing plate a52 located in the inner cavity of the fixing frame 51 is fixedly connected to a spring c53, and the other end of the spring c53 is fixedly connected to the middle of the inner cavity of the fixing frame 51, and the middle part of the right side of the sealing plate a52 close to the liquid accumulation barrel 31 is rotatably connected to the hook plate 54 through a torsion spring; The connecting part 50 also includes a limiting frame 55, and the inner cavity of the limiting frame 55 is slidably connected to a sliding rod 56. The left end of the sliding rod 56 extends out of the limiting frame 55 and is fixedly connected to the sealing plate b57, and the outer ring of the left end of the sealing plate b57 is in contact with the through hole at the left end of the liquid accumulation barrel 31, and the middle part of the left end of the sealing plate b57 is fixedly connected to the hook 58, and the upper end of the hook 58 is in contact with the lower end of the left side of the hook plate 54. The right end of the sliding rod 56 is fixedly connected to the spring d59, and the right end of the spring d59 is fixedly connected to the middle part of the inner cavity of the limiting frame 55.

[0039] It should be noted that the outer edges of the sealing plates a52 and b57 are both provided with sealing rings to ensure the sealing between the sealing plate a52 and the main body 10, and between the sealing plate b57 and the liquid accumulation barrel 31. The left end outer ring of the sealing plate a52 is provided with ridges on both sides, and the inner cavity of the fixing frame 51 is also provided with grooves adapted to the ridges, so that the sealing plate a52 can only slide left and right but cannot rotate, thereby avoiding affecting the connection between the hook plate 54 and the retractor 58. A sealing ring is provided in the inner cavity of the pipeline connected to the lower right end of the main body 10. The outer ring of the left end of the sealing plate a52 is in contact with the sealing ring, and the right end of the sealing plate a52 cannot extend out of the pipeline under normal conditions. The purpose is to utilize the rebound force of the spring c53 and the negative pressure environment in the main body 10 to make the left end of the sealing plate a52 fit tightly at the pipeline outlet of the main body 10, thereby ensuring the sealing effect and preventing the main body 10 from leaking and affecting the surrounding environment when the liquid accumulation barrel 31 is removed; A square groove is provided at the lower left end of the hook plate 54, and the lower end of the hook plate 54 is an arc structure, and the upper end is a downwardly inclined structure, and a groove is provided on the left side of the upper end of the liquid accumulation barrel 31 to adapt to the pipeline on the right side of the main body 10, and a slope is provided above the groove, so that when the liquid accumulation barrel 31 is inserted into the main body 10, the slope in the upper end groove can be matched with the arc below the hook plate 54 to push the hook plate 54 back into the sealing plate a52. When the sealing plate a52 enters the range of the through hole at the left end of the liquid accumulation barrel 31, it can be ejected outward by relying on the torsion spring, and as the liquid accumulation barrel 31 is inserted into the main body 10, the hook plate 54 can be pushed back into the sealing plate a52. The hook 58 is inserted into the square groove between the left side of the hook plate 54 and the sealing plate a52 by continuously rising. When the liquid storage barrel 31 is removed, when the liquid storage barrel 31 is pulled down, the hook 58 can be separated from the hook plate 54 at the same time, and the hook plate 54 can be pushed back into the sealing plate a52 through the cooperation of the left outer wall of the liquid storage barrel 31 and the inclined structure of the upper end of the hook plate 54, so as to avoid affecting the removal of the liquid storage barrel 31 (and during the removal process, the liquid storage barrel 31 will also exert a leftward pushing force through the hook plate 54 to assist in the stable sealing of the sealing plate a52 and the main body 10); The limiting frame 55 is entirely placed in the inner cavity of the liquid accumulation barrel 31, and grooves are provided on the upper and lower sides of the inner cavity of the limiting frame 55, and the sliding rod 56 is provided with a protrusion adapted to the groove, thereby limiting the range of motion of the sliding rod 56 and the sealing plate b57, so that the sliding rod 56 can only move but cannot rotate, thereby avoiding affecting the connection between the hook 58 and the hook plate 54; The diameter of the through hole at the left end of the liquid accumulation barrel 31 is larger than the outer diameter of the pipeline at the right end of the main body 10, so that once the sealing plate a52 is separated from the pipeline, the liquid accumulation barrel 31 can be connected to the lower end of the main body 10. Then, through the principle of communicating vessels, the accumulated liquid in the main body 10 can flow into the liquid accumulation barrel 31. When the accumulated liquid needs to be discharged, only the liquid accumulation barrel 31 is removed for drainage, and then the empty barrel is inserted back into the main body 10 to accumulate the accumulated liquid, thereby achieving the discharge of the accumulated liquid without stopping the machine. The retractor 58 is an L-shaped medical-grade plate (for example, medical-grade 316 stainless steel, and the hook plate 54 and the retractor 58 are made of the same material), and the width of the raised portion at the upper end of the retractor 58 is smaller than the width of the square groove on the left side of the hook plate 54, so that when the liquid accumulation barrel 31 is pushed up, the retractor 58 can be smoothly inserted into the square groove on the left side of the hook plate 54.

[0040] In this embodiment, when the liquid storage barrel 31 is inserted into the inner cavity of the main body 10, the groove on the left side of the liquid storage barrel 31 pushes the arc structure at the lower end of the hook plate 54, so that the hook plate 54 is retracted into the sealing plate a52, and then the liquid storage barrel 31 continues to be inserted and raised until the hook plate 54 moves to the through-hole area at the left end of the liquid storage barrel 31, and the hook plate 54 extends outward by the rebound force of the torsion spring. When the liquid storage barrel 31 is fully inserted into the inner cavity of the main body 10, the hook 58 rises and inserts the hook plate 54 and the sealing plate a52. 52, the slide bar 56 is driven by the driving part 60 to move to the right, pulling the sealing plate b57 and the hook 58 to move to the right, thereby driving the hook plate 54 and the sealing plate a52 to move to the right, so that the pipeline at the lower end of the main body 10 and the through hole at the lower end of the liquid accumulation barrel 31 are opened synchronously, and the lower ends of the main body 10 and the liquid accumulation barrel 31 are connected, and then, through the communicating vessel principle, the accumulated liquid in the main body 10 can flow into the liquid accumulation barrel 31, and the liquid accumulation barrel 31 can share part of the accumulated liquid. When it is necessary to drain the accumulated liquid, the sealing plate b57 and the sealing plate a52 are driven to reset, so that the main body 10 and the liquid accumulation barrel 31 are switched back to the sealed state, and then the liquid accumulation barrel 31 is pulled down to separate from the main body 10. After the liquid in the liquid accumulation barrel 31 is drained, it can be reinserted into the main body 10.

[0041] Please refer again Figures 13 to 15 A through hole is provided at the lower end of the liquid accumulation barrel 31, and the S-shaped rod 61 is rotatably connected to the through hole through a sealed bearing. The upper end of the S-shaped rod 61 is fixedly connected to a pull rope b62, and the upper end of the pull rope b62 passes through the limit frame 55 and is fixedly connected to the right end of the slide rod 56. The lower end of the S-shaped rod 61 extends out of the inner cavity of the liquid accumulation barrel 31 and is slidably connected to a positioning block 63. One end of the positioning block 63 is located in the inner cavity of the S-shaped rod 61 and is fixedly connected to a spring e64. The other end of the spring e64 is fixedly connected to the inner cavity of the S-shaped rod 61. The lower end of the liquid accumulation barrel 31 is fixedly connected to a positioning plate 65 at the outer edge of the S-shaped rod 61, and the part of the positioning block 63 extending out of the S-shaped rod 61 is movably inserted into the positioning plate 65.

[0042] It should be noted that the positioning plate 65 is provided with two sets of jacks, which are located at both ends of the positioning plate 65; By rotating the S-shaped rod 61, the pull rope b62 is pulled to move, and then the slide bar 56 is moved by pulling the pull rope b62, thereby driving the sealing plate b57, the hook 58, the hook plate 54 and the sealing plate a52 to move; The lower end of the positioning block 63 is provided with a convex plate, and the convex plate extends out of the lower end of the S-shaped rod 61, so that the positioning block 63 can be pulled to move by the convex plate.

[0043] In this embodiment, when the main body 10 needs to be connected to the liquid storage barrel 31, the positioning block 63 is first pulled back into the S-shaped rod 61. Then, the S-shaped rod 61 is rotated to move the pull rope b62, which in turn pulls the slide bar 56 to adjust the sealing state between the main body 10 and the liquid storage barrel 31. Then, the positioning block 63 is released, and the spring e64 rebounds to push the positioning block 63 into the positioning plate 65 for fixation. When removing the liquid storage barrel 31, the S-shaped rod 61 needs to be controlled to return to its original position, switching the main body 10 and the liquid storage barrel 31 to a sealed state before disassembly can proceed.

[0044] The working principle of the present invention is as follows: when the liquid accumulation barrel 31 is inserted into the inner cavity of the main body 10 during use, the groove on the left side of the liquid accumulation barrel 31 will push the arc structure at the lower end of the hook plate 54, so that the hook plate 54 is retracted into the sealing plate a52, and then the liquid accumulation barrel 31 continues to be inserted and lifted until the hook plate 54 moves to the through-hole area at the left end of the liquid accumulation barrel 31, and the hook plate 54 extends outward by the rebound force of the torsion spring, and then the hook 58 is inserted into the square groove between the hook plate 54 and the sealing plate a52. At this time, the S-shaped rod 61 is rotated to drive the pull rope b62 to move, so that the pull rope b62 pulls the slide rod 56 to move, pulling the sealing plate b57 and the hook 58 to move to the right, and then driving the hook plate 54 and the sealing plate a52 to move to the right, so that the pipeline at the lower end of the main body 10 and the through-hole at the lower end of the liquid accumulation barrel 31 are opened synchronously, and the lower ends of the main body 10 and the liquid accumulation barrel 31 are connected. At the same time, the vent pipe 45 will push the airtight plug 42 upward, so that the upper and lower ends of the main body 10 and the liquid accumulation barrel 31 are connected, so that the accumulated liquid in the main body 10 can flow into the liquid accumulation barrel 31 through the principle of communicating vessels, and the liquid accumulation barrel 31 can share part of the accumulated liquid. At the same time, the spring a35 will push the plug 34 outward and snap into the slot at the lower end of the main body 10, thereby firmly fixing the liquid accumulation barrel 31 in the cavity of the main body 10. During the process of negative pressure suction, the lifting plate 23 can be driven up and down by rotating the screw rod 25 to adjust the tightness of the elastic rope 27, thereby adjusting the threshold of the negative pressure in the inner cavity of the main body 10. When the negative pressure in the main body 10 exceeds the preset threshold, the atmospheric pressure will push the sealing plug 28 down, connecting the main body 10 with the outside atmosphere through the pressure relief pipe 21, allowing outside air to enter the main body 10, thereby reducing the intensity of the negative pressure. When the accumulated liquid needs to be discharged, the sealing plate b57 and the sealing plate a52 need to be driven to reset, so that the main body 10 and the liquid accumulation barrel 31 are switched back to the sealed state, and then the liquid accumulation barrel 31 is pulled down to separate from the main body 10. After the liquid in the liquid accumulation barrel 31 is discharged, it can be reinserted into the main body 10.

[0045] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A fluid aspiration device for mediastinal tumor surgery, characterized by: include: The main body, the upper end of which is connected to a negative pressure tube and a drainage tube; The pressure relief part includes a pressure relief pipe connected to the upper end of the main body, a lifting plate is provided in the inner cavity of the pressure relief pipe, the lower end of the lifting plate is fixedly connected to an elastic rope, and the lower end of the elastic rope is fixedly connected to a sealing plug; The quick-release part includes a liquid accumulation barrel, which is arranged in the right inner cavity of the main body; The ventilation part includes an airtight plug, which is arranged on the right side of the inner cavity of the main body. A ventilation pipe is arranged at the upper end of the liquid accumulation barrel, and the upper end of the ventilation pipe is in contact with the lower end of the airtight plug; The connecting part includes a sealing plate a, which is arranged at the lower right end of the main body cavity, and a hook plate is arranged on the right side of the sealing plate a, and a sealing plate b is arranged on the left side of the inner cavity of the liquid accumulation barrel. The left end of the sealing plate b is fixedly connected with a draw hook, and the draw hook is in contact with the lower end of the hook plate; The driving part includes an S-shaped rod, which is rotatably connected to the lower end of the inner cavity of the liquid accumulation barrel, and the upper end of the S-shaped rod is fixedly connected to a pull rope b, and the upper end of the pull rope b is connected to the sealing plate b; Among them, when the liquid accumulation barrel is inserted into the main body, the vent pipe pushes open the airtight plug, so that the liquid accumulation barrel is connected with the upper end of the main body, and at the same time the hook plate is connected with the pull hook. At this time, the S-shaped rod is rotated to pull the pull rope b and the sealing plate b to move, driving the sealing plate a to extend into the liquid accumulation barrel, so that the main body is connected with the lower end of the liquid accumulation barrel.

2. The fluid aspiration device for mediastinal tumor surgery according to claim 1, characterized in that: The outer side of the main body is movably sleeved with a hanging basket, and an entrance and exit are opened at the upper end of the front of the main body. The right side of the upper end of the main body is connected to the negative pressure pipe, and the left side is connected to the drainage pipe.

3. The fluid aspiration device for mediastinal tumor surgery according to claim 1, characterized in that: A through groove is provided in the middle of the upper end of the main body, and the pressure relief pipe is fixedly connected to the outer ring of the through groove and is communicated with the through groove. The pressure relief part also includes a dustproof net, which is fixedly connected to the upper end inlet of the pressure relief pipe. The left side of the inner cavity of the pressure relief pipe is fixedly connected to the limit rod, and the lifting plate is slidably connected to the outer ring of the limit rod, and the left and right ends of the lifting plate are in contact with and connected to the inner cavity wall of the pressure relief pipe.

4. The fluid aspiration device for mediastinal tumor surgery according to claim 3, characterized in that: The pressure relief part also includes a screw rod, which is rotatably connected to the right side of the inner cavity of the pressure relief pipe, the upper end of the screw rod extends out of the pressure relief pipe, and the outer ring of the middle section of the screw rod is threadedly connected to the middle part of the right end of the lifting plate. A through groove is opened on the right side of the pressure relief pipe, and a perspective plate is fixedly connected in the through groove. Two sets of elastic ropes are fixedly connected to the lower end of the lifting plate, and the lower ends of the two sets of elastic ropes are fixedly connected to sealing plugs, and the upper ends of the sealing plugs are in contact with the outlet of the lower end of the pressure relief pipe.

5. The fluid aspiration device for mediastinal tumor surgery according to claim 1, characterized in that: A cavity is provided on the right side of the lower end of the main body, and the liquid accumulation bucket is movably inserted in the cavity. The quick-release part also includes a handle, which is arranged in the middle of the lower end of the liquid accumulation bucket, and the left and right sides of the upper end of the handle are fixedly connected to a pull rope a, the upper ends of the pull rope a are extended into the inner cavity of the liquid accumulation bucket and are fixedly connected to an insert block, the insert block passes through the liquid accumulation bucket and is movably inserted in the cavity at the lower end of the main body, one end of the insert block extending into the inner cavity of the liquid accumulation bucket is fixedly connected to a spring a, the other end of the spring a is fixedly connected to the middle of the inner cavity of the liquid accumulation bucket, and a drain outlet is provided at the upper end of the liquid accumulation bucket.

6. The fluid aspiration device for mediastinal tumor surgery according to claim 1, characterized in that: The ventilation part also includes a connecting pipe, which is connected to the upper right end of the inner cavity of the main body, and the lower end outlet of the connecting pipe is placed above the cavity at the lower end of the main body. The inner cavity of the connecting pipe is fixedly connected to the mounting frame, and the lower end of the airtight plug is slidably connected to the middle of the mounting frame.

7. The fluid aspiration device for mediastinal tumor surgery according to claim 6, characterized in that: The middle outer ring of the airtight plug is fixedly connected to a convex ring, and the convex ring is slidably connected to the inner cavity of the mounting frame. The ventilation part also includes a spring b, which is fixedly connected to the upper end of the convex ring of the outer ring of the airtight plug, and the upper end of the spring b is fixedly connected to the upper end of the inner cavity of the mounting frame. The lower end of the airtight plug passes through the mounting frame and is placed below the mounting frame. The upper end of the liquid accumulation barrel is connected to a ventilation pipe, the upper end of the ventilation pipe is in contact with the lower end of the airtight plug, and the outer ring of the ventilation pipe is movably inserted into the inner cavity of the connecting pipe.

8. The fluid aspiration device for mediastinal tumor surgery according to claim 1, characterized in that: The lower right end of the inner cavity of the main body is connected to a pipeline, and the outlet of the pipeline faces the liquid accumulation bucket, and a through hole is opened at the part where the liquid accumulation bucket contacts the pipeline, and the through hole is connected to the outlet of the pipeline. The connecting part also includes a fixed frame, and the sealing plate a is slidably connected to the inner cavity of the fixed frame, and the part of the sealing plate a located in the inner cavity of the fixed frame is fixedly connected to the spring c, and the other end of the spring c is fixedly connected to the middle of the inner cavity of the fixed frame. The middle part of the right side of the sealing plate a close to the liquid accumulation bucket is rotatably connected to the hook plate.

9. The fluid aspiration device for mediastinal tumor surgery according to claim 8, characterized in that: The connecting part also includes a limiting frame, the inner cavity of the limiting frame is slidably connected to a sliding rod, the left end of the sliding rod extends out of the limiting frame and is fixedly connected to the sealing plate b, and the outer ring of the left end of the sealing plate b is in contact with the through hole at the left end of the liquid accumulation barrel, and the middle part of the left end of the sealing plate b is fixedly connected to the pull hook, the upper end of the pull hook is in contact with the lower end of the left side of the hook plate, the right end of the sliding rod is fixedly connected to the spring d, and the right end of the spring d is fixedly connected to the middle part of the inner cavity of the limiting frame.

10. The fluid aspiration device for mediastinal tumor surgery according to claim 1, characterized in that: A through hole is provided at the lower end of the liquid accumulation bucket, and the S-shaped rod is rotatably connected to the through hole. The upper end of the S-shaped rod is fixedly connected to a pull rope b, and the upper end of the pull rope b passes through the limit frame and is fixedly connected to the right end of the slide rod. The lower end of the S-shaped rod protrudes from the inner cavity of the liquid accumulation bucket and is slidably connected to a positioning block. One end of the positioning block is located in the inner cavity of the S-shaped rod and is fixedly connected to a spring e. The other end of the spring e is fixedly connected to the inner cavity of the S-shaped rod. The lower end of the liquid accumulation bucket is fixedly connected to a positioning plate at the outer edge of the S-shaped rod, and the part of the positioning block protruding from the S-shaped rod is movably inserted into the positioning plate.

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