Wound negative pressure drainage device for thoracic surgery department

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a thoracic surgery wound negative pressure drainage device which comprises a main body, and a negative pressure assembly is arranged in the main body; the negative pressure assembly comprises a collecting bottle, a water sealing bottle and a pressure measuring bottle; the liquid discharging assembly comprises a counterweight plate and a switch, and the collecting bottle is communicated with a waste liquid bottle and an electric valve; the suction assembly comprises a drainage tube, and a rotating rod and a cutter are arranged in the drainage tube; the driving assembly comprises a driving shaft, a pull rope is arranged in the driving shaft, and a gear rod is arranged at the lower end of the driving shaft; and the manual assembly is arranged above the driving assembly. According to the drainage device, effusion can be automatically discharged when excessive effusion is collected, the situation that a patient is affected by excessive effusion accumulation is avoided, solids in the drainage tube can be cleaned through the acting force of descending of the balance weight plate, the drainage device is switched to a manual operation mode when the balance weight plate cannot cut up the solids, and operation safety is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical appliances, and in particular relates to a negative pressure drainage device for thoracic surgical wounds. Background Art

[0002] After thoracic surgery (such as lung resection), a chest tube is placed to drain blood, exudate, and air to prevent chest infection and atelectasis. While negative pressure drainage devices are essential for this procedure, existing devices still present some challenges.

[0003] First of all, postoperative drainage tubes are often mixed with blood clots, fibrin flocs and necrotic tissue. These solid objects can easily clog the drainage tubes, resulting in poor drainage and causing a series of problems. Therefore, when there are solid objects in the drainage tubes, they need to be guided and discharged in time. However, existing drainage devices rely on manual squeezing of the tubes to discharge solid objects, which is not only inefficient but also increases the workload of medical staff.

[0004] Secondly, in thoracic surgery, the accumulated fluid is collected into a collection bottle through the drainage tube. While existing technologies can automatically aspirate pleural effusion, they lack the ability to detect the amount of fluid present. During use, if excessive fluid accumulates and the inlet of the negative pressure line is covered, it can easily lead to medical accidents. However, existing technologies typically rely on observation for judgment. Any oversight or missed observation due to other treatments can have a significant impact on the patient. Summary of the Invention

[0005] The purpose of the present invention is to provide a negative pressure drainage device for thoracic surgical wounds, which can automatically discharge the accumulated fluid when too much fluid is collected, thereby avoiding the impact of excessive accumulation of fluid on the patient. It can also use the force of the descending counterweight plate to clean the solid objects in the drainage tube, and switch to manual operation mode when the counterweight plate cannot cut the solid objects to ensure the safety of the operation.

[0006] The technical solutions adopted by the present invention are as follows: A thoracic surgery wound negative pressure drainage device, comprising: A main body, wherein the inner cavity of the main body is provided with a negative pressure component; The negative pressure component includes a collecting bottle placed in the inner cavity of the main body, and a water seal bottle and a pressure measuring bottle are also placed in the inner cavity of the main body; The drainage assembly includes a counterweight plate, which is arranged in the collection bottle, and a switch is fixedly connected to the upper end of the inner cavity of the collection bottle. The rear side of the collection bottle is connected to the waste liquid bottle, and an electric valve is provided between the waste liquid bottle and the collection bottle; The suction component includes a drainage tube, which is arranged at the upper end of the collection bottle, and a rotating rod is provided in the inner cavity of the drainage tube, and cutters are provided at both ends of the rotating rod; The drive assembly includes a mounting box connected to the drainage tube, and a drive shaft is provided in the mounting box, the drive shaft is arranged above the drainage tube, a pull rope is provided in the drive shaft, the lower end of the pull rope is connected to the counterweight plate, and a gear rod is provided at the lower end of the drive shaft, and the gear rod is connected to the rotating rod; A manual component is arranged above the driving component; When the accumulated liquid enters the collection bottle, the counterweight plate rises, driving the pull rope to rise and causing the drive shaft to rotate, thereby driving the rotating rod and the cutter to rotate; When the counterweight plate rises to the top, the switch is triggered, causing the electric valve to open and drain the accumulated liquid into the waste liquid bottle.

[0007] In a preferred embodiment, the lower end of the main body is rotatably connected to a universal wheel via a rotating shaft, and the upper right end of the main body is rotatably connected to a handle, the lower front end of the main body is hinged with door 1, and the lower back end is hinged with door 2, and a controller is fixedly installed on the rear side of the inner cavity of the main body.

[0008] In a preferred embodiment, two groups of partitions are fixedly connected to the lower end of the inner cavity of the main body, and the collecting bottle, water seal bottle and pressure measuring bottle are respectively placed in the areas separated by the two groups of partitions. The negative pressure component also includes a connecting pipe, and connecting pipes are connected between the collecting bottle and the water seal bottle, as well as between the water seal bottle and the pressure measuring bottle. The inner cavity of the pressure measuring bottle is connected to a ventilation pipe, and the upper end of the ventilation pipe extends out of the main body and is fixedly connected to a dust cover. The upper right side of the pressure measuring bottle is connected to a negative pressure pipe, and a negative pressure pump is fixedly installed on the rear side of the inner cavity of the main body, and the rear end of the negative pressure pipe is connected to the negative pressure pump.

[0009] In a preferred embodiment, the discharge assembly also includes a limiting tube, which is fixedly installed on the rear side of the inner cavity of the collecting bottle, and the counterweight plate is slidably connected to the inner cavity of the limiting tube, the lower end of the counterweight plate is fixedly connected to multiple groups of airbag cushions, and the upper end of the counterweight plate is fixedly connected to an extrusion block, which is arranged below the switch.

[0010] In a preferred embodiment, the drainage assembly also includes a drainage pipe, which is connected to the lower end of the rear side of the collecting bottle, and the rear end outlet of the drainage pipe is movably inserted into the upper end inlet of the waste liquid bottle, and the waste liquid bottle is placed at the lower end of the rear side of the main body cavity, and the electric valve is installed on the outer ring of the drainage pipe.

[0011] In a preferred embodiment, the drainage tube is connected to the inlet at the upper end of the collecting bottle, and the suction component also includes a negative pressure sensor, which is fixedly installed at the lower right end of the outer ring of the drainage tube, and the detection head of the negative pressure sensor is placed in the inner cavity of the drainage tube.

[0012] In a preferred embodiment, the suction assembly also includes a placement rod, which is fixedly connected to the middle of the inner cavity of the installation box, and the rotating rod is rotatably connected to the middle of the placement rod through a sealed bearing. Both ends of the rotating rod extend out of the placement rod, and the parts extending out of the placement rod at both ends are fixedly connected to a cutter.

[0013] In a preferred embodiment, the drive assembly also includes an installation box, which is fixedly connected to the drainage tube, and the drive shaft is rotatably connected to the middle of the inner cavity of the installation box through a ball bearing, and the middle of the drive shaft is fixedly connected to the wire drum, and the upper end of the pull rope is fixedly connected to the inside of the wire drum, and the lower end of the pull rope passes through the drainage tube and is fixedly connected to the upper end of the counterweight plate.

[0014] In a preferred embodiment, the drive assembly also includes gear 1, which is fixedly connected to the left outer ring of the drive shaft. The lower end of the inner cavity of the installation box is rotatably connected to the gear rod through a ball bearing. The right end of the gear rod is fixedly connected to gear 2, and the outer ring of gear 2 is engaged with the outer ring of gear 1, and the middle outer ring of the gear rod is engaged with a chain. The lower end of the chain passes through the installation box and the placement rod and is engaged with the middle outer ring of the rotating rod. The two ends of the drive shaft are respectively fixedly connected to a spiral spring, and the other end of the spiral spring is fixedly connected to the inner cavity of the installation box.

[0015] In a preferred embodiment, the manual assembly includes two groups of sliding tubes, which are fixedly connected to the upper ends of the inner cavity of the installation box, and the two groups of sliding tubes are symmetrically arranged. The inner cavities of the two groups of sliding tubes are slidably connected with lifting blocks, and the lower ends of the two groups of lifting blocks are fixedly connected with springs. The lower ends of the springs are fixedly connected to the lower ends of the inner cavities of the two groups of sliding tubes, and the middle parts of the two groups of lifting blocks are rotatably connected to gear three through ball bearings, and a through slot is provided at the upper end of the installation box, the upper end of gear three extends out of the installation box through the through slot, and the lower end of gear three is arranged above gear one.

[0016] The technical effects achieved by the present invention are: The drainage assembly and negative pressure assembly of the present invention can automatically discharge the accumulated fluid when too much accumulated fluid is collected, thereby avoiding the impact of excessive accumulation of accumulated fluid on the patient; when in use, the accumulated fluid enters the collection bottle through the drainage tube, and the accumulated fluid continues to accumulate, and the buoyancy is used to lift the counterweight plate up. If the accumulated fluid is too much, the counterweight plate will be pushed to rise to the upper end of the inner cavity of the collection bottle until the switch is triggered. At this time, the electric valve opens, and the excess accumulated fluid is discharged into the waste liquid bottle, thereby realizing the rapid discharge of the accumulated fluid. Subsequently, only the waste liquid bottle needs to be taken out for cleaning, and there is no need to disassemble the collection bottle, thereby reducing the workload; The suction assembly and drive assembly of the present invention can utilize the force of the descending counterweight plate to clean solid objects in the drainage tube, thereby ensuring smooth operation of the device. When in use, if solid objects accumulate in the drainage tube, the electric valve can be controlled to actively open and drain the liquid. At this time, the counterweight plate will descend rapidly, pulling the pull rope to descend, causing the drive shaft to rotate, driving the gear rod and the rotating rod to rotate, causing the cutter to rotate and chop the solid objects, thereby ensuring smooth operation of the drainage tube. The manual component of the present invention can manually crush solid objects in an emergency situation to avoid the situation where the force of the counterweight plate cannot crush the solid objects and affect use; if the solid objects are too hard or too large during use, resulting in the counterweight plate's descending force being unable to crush them, the driving part of the manual component can be pressed to contact the driving shaft, and the driving shaft can be driven by rotating the driving part, and then the cutter can be manually driven to rotate, ensuring that it can cope with solid objects of different sizes and hardness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional schematic diagram of the whole of the present invention; Figure 3 It is a right side sectional view of the main body of the present invention; Figure 4 is a schematic cross-sectional view of the negative pressure assembly of the present invention; Figure 5 It is a schematic diagram of the position of the drainage component in the present invention; Figure 6 It is a schematic diagram of the position of the waste liquid bottle in the present invention; Figure 7 This is a diagram showing the connection between the waste liquid bottle and the collection bottle in the present invention; Figure 8 It is a schematic diagram of the positions of the discharge component and the suction component in the present invention; Figure 9 is a schematic cross-sectional view of the drainage tube of the present invention; Figure 10 It is a cross-sectional schematic diagram of the installation box of the present invention; Figure 11 is a schematic cross-sectional view of the manual assembly of the present invention; Figure 12 It is a connection diagram of the driving component and the manual component in the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows: 10. Main body; 11. Universal wheel; 12. Handle; 13. Box door 1; 14. Box door 2; 15. Controller; 20. Negative pressure assembly; 21. Collection bottle; 22. Water seal bottle; 23. Pressure bottle; 24. Connecting pipe; 25. Ventilation pipe; 26. Dust cover; 27. Negative pressure pipe; 28. Negative pressure pump; 30. Drain assembly; 31. Limiting pipe; 32. Counterweight plate; 33. Airbag cushion; 34. Extrusion block; 35. Switch; 36. Drain pipe; 37. Waste liquid bottle; 38. Electric valve; 40. Suction assembly; 41. Drainage tube; 42. Negative pressure sensor; 43. Placement rod; 44. Rotating rod; 45. Cutter; 50. Drive assembly; 51. Installation box; 52. Drive shaft; 53. Wire reel; 54. Pull rope; 55. Gear 1; 56. Gear rod; 57. Gear 2; 58. Chain; 59. Helical spring; 60. Manual assembly; 61. Slide tube; 62. Lifting block; 63. Spring; 64. Gear 3. 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 8 to 10 As shown, this embodiment provides a thoracic surgery wound negative pressure drainage device, comprising: The main body 10 has a negative pressure assembly 20 disposed in its inner cavity; The negative pressure component 20 includes a collecting bottle 21, which is placed in the inner cavity of the main body 10. The inner cavity of the main body 10 also contains a water seal bottle 22 and a pressure measuring bottle 23; The drainage assembly 30 includes a counterweight plate 32, which is disposed within the collection bottle 21. A switch 35 is fixedly connected to the upper end of the inner cavity of the collection bottle 21. The rear side of the collection bottle 21 is connected to a waste liquid bottle 37, and an electric valve 38 is provided between the waste liquid bottle 37 and the collection bottle 21. The suction assembly 40 includes a drainage tube 41, which is disposed at the upper end of the collection bottle 21. A rotating rod 44 is disposed in the inner cavity of the drainage tube 41, and cutters 45 are disposed at both ends of the rotating rod 44. The drive assembly 50 includes a mounting box 51 connected to the drainage tube 41. A drive shaft 52 is disposed within the mounting box 51. The drive shaft 52 is disposed above the drainage tube 41. A pull rope 54 is disposed within the drive shaft 52. The lower end of the pull rope 54 is connected to the counterweight plate 32. A gear rod 56 is disposed at the lower end of the drive shaft 52. The gear rod 56 is connected to the rotating rod 44. A manual assembly 60 is provided above the driving assembly 50; When the accumulated liquid enters the collecting bottle 21, the counterweight plate 32 rises, driving the pull rope 54 to rise and causing the driving shaft 52 to rotate, thereby driving the rotating rod 44 and the cutter 45 to rotate; When the counterweight plate 32 rises to the top, the switch 35 is triggered, causing the electric valve 38 to open and discharge the accumulated liquid into the waste liquid bottle 37.

[0024] It should be noted that, under normal conditions, the overall height of the main body 10 should be lower than the patient's bed surface to avoid affecting the normal operation of the negative pressure drainage operation due to the main body 10 being too high.

[0025] In this embodiment, the drainage tube 41 is placed in the patient's body during use, and negative pressure drainage is performed through the pressure measuring bottle 23, the water seal bottle 22 and the collecting bottle 21. During use, the accumulated fluid flows into the collecting bottle 21 through the drainage tube 41 and continues to accumulate. The buoyancy is used to lift the counterweight plate 32. If the counterweight plate 32 rises to the top and triggers the switch 35, the electric valve 38 will be controlled to open, and the accumulated fluid will be discharged into the waste liquid bottle 37 to avoid excessive accumulation of fluid and affect the patient. When solid objects enter the drainage tube 41, once an abnormal negative pressure occurs in the drainage tube 41, the electric valve 38 can be directly controlled to open and start the drainage operation. At this time, the counterweight plate 32 drops rapidly, pulling the pull rope 54 to drop, causing the drive shaft 52 to rotate, driving the gear rod 56 and the rotating rod 44 to rotate, and causing the cutter 45 to rotate to cut the solid objects into pieces; if the solid objects are too large or too hard, resulting in the above state unable to cut the solid objects, the manual component 60 can be used to manually control the rotation of the drive shaft 52 to drive the cutter 45 to run for the cutting operation, thereby ensuring the normal operation of the cutting operation.

[0026] Next, please refer to Figures 1 to 3 The lower end of the main body 10 is rotatably connected to a universal wheel 11 through a rotating shaft, and the upper right end of the main body 10 is rotatably connected to a handle 12 through a ball bearing. The lower end of the front side of the main body 10 is hinged with a box door 13, and the lower end of the back side is hinged with a box door 2 14. A controller 15 is fixedly installed on the rear side of the inner cavity of the main body 10.

[0027] It should be noted that the handle 12 is a U-shaped structure, which is designed to allow the handle 12 to be folded down and retracted when not in use, so as to facilitate the placement of the device; Both door 13 and door 2 14 are provided with handrails; The controller 15 is used to control the operation of each group of electrical components in the device and should be connected to the mains when in use for control.

[0028] In this embodiment, when in use, the components in the main body 10 can be taken out by opening the box door 13 and the box door 2 14, and the main body 10 can be moved by the handle 12 and the universal wheel 11 so that the main body 10 can be moved to the patient's side conveniently and quickly.

[0029] Next, please refer to Figures 2 to 4 The lower end of the inner cavity of the main body 10 is fixedly connected to two groups of partitions, and the collecting bottle 21, the water seal bottle 22 and the pressure measuring bottle 23 are respectively placed in the area separated by the two groups of partitions. The negative pressure component 20 also includes a connecting pipe 24. There are connecting pipes 24 between the collecting bottle 21 and the water seal bottle 22, as well as between the water seal bottle 22 and the pressure measuring bottle 23. The inner cavity of the pressure measuring bottle 23 is connected with a vent pipe 25, and the upper end of the vent pipe 25 extends out of the main body 10 and is fixedly connected to a dust cover 26. The right side of the upper end of the pressure measuring bottle 23 is connected with a negative pressure pipe 27. A negative pressure pump 28 is fixedly installed on the rear side of the inner cavity of the main body 10, and the rear end of the negative pressure pipe 27 is connected to the negative pressure pump 28.

[0030] It should be noted that a sampling hole is provided at the lower end of the front face of the collecting bottle 21, and a sealing gasket is provided in the sampling hole. This is intended to allow a needle to be inserted into the sampling hole to quickly collect a sample of the accumulated fluid. The sealing gasket ensures the sealing of the collecting bottle 21 under normal conditions, preventing the sampling hole from affecting the negative pressure strength. The upper ends of the collecting bottle 21, the water seal bottle 22 and the pressure measuring bottle 23 are all provided with drainage ports, and sealing gaskets are provided on the drainage ports to ensure the sealing effect; The connecting pipes 24 are all hoses and are connected to the collecting bottle 21, the water seal bottle 22 and the pressure measuring bottle 23 by plugging. The connecting parts are all provided with sealing gaskets, which are designed to facilitate disassembly, replacement and maintenance by plugging. The upper inlet of the collecting bottle 21 is plugged into the drainage tube 41, and a sealing gasket is connected to the plugged-in part to avoid affecting the intensity of the negative pressure. A valve is also provided at the position of the upper inlet of the collecting bottle 21 to facilitate closing the inlet of the collecting bottle 21 under special circumstances (such as when the drainage volume is too large to avoid causing pleural reaction, or when the patient needs to be transported and moved).

[0031] In this embodiment, when in use, the negative pressure pump 28 runs, and negative pressure is generated in the pressure measuring bottle 23 through the negative pressure tube 27, and the negative pressure is diffused to the water seal bottle 22 and the collecting bottle 21 through the connecting tube 24, ensuring that there is a stable negative pressure in the collecting bottle 21 to perform drainage operations.

[0032] Next, please refer to Figures 4 to 8 The discharge assembly 30 further includes a limit tube 31, which is fixedly mounted on the rear side of the inner cavity of the collecting bottle 21, and a counterweight plate 32 is slidably connected to the inner cavity of the limit tube 31. The lower end of the counterweight plate 32 is fixedly connected to multiple groups of airbag cushions 33, and the upper end of the counterweight plate 32 is fixedly connected to an extrusion block 34, which is arranged below the switch 35. The drainage assembly 30 also includes a drainage pipe 36, which is connected to the lower end of the rear side of the collecting bottle 21, and the rear end outlet of the drainage pipe 36 is movably inserted into the upper end inlet of the waste liquid bottle 37, and the waste liquid bottle 37 is placed at the lower end of the rear side of the inner cavity of the main body 10, and the electric valve 38 is installed on the outer ring of the drainage pipe 36.

[0033] It should be noted that the outlet at the lower rear end of the collecting bottle 21 is plugged into the inlet of the drain pipe 36 and sealed with a sealing gasket to ensure the sealing performance of the collecting bottle 21. The electric valve 38 is controlled by the controller 15, and the switch 35 is electrically connected to the controller 15. When there is too much accumulated fluid, the buoyancy generated by the airbag cushion 33 can be used to push the counterweight plate 32 upward until the extrusion block 34 rises and touches the switch 35. Then, the switch 35 and the controller 15 control the electric valve 38 to open, allowing the accumulated fluid to flow into the waste liquid bottle 37 through the drain pipe 36. The controller 15 should have a built-in timing opening and closing component. When the controller 15 is running, it needs to control the operation of the electric valve 38 through the timing opening and closing component. When in use, the controller 15 will control the electric valve 38 to open immediately after the switch 35 is triggered, and then set the time through the timing opening and closing component. For example, it is set to delay for thirty seconds or sixty seconds before controlling the electric valve 38 to close (preferably thirty seconds in this embodiment. The specific duration can be set according to the actual drainage situation, which will not be described in detail here). What needs to be explained here is the process of controlling the delayed closing of the electric valve 38 after the switch 35 is triggered. It is commonly used in the prior art. Only key components such as timing opening and closing are listed here, and no additional details are given. The upper end of the waste liquid bottle 37 is fixedly connected with an arc-shaped handle for easy removal for cleaning, and a drain port is opened on the left side of the upper end of the waste liquid bottle 37, and a sealing cover is provided at the drain port to facilitate the discharge of collected accumulated liquid.

[0034] In this embodiment, when in use, accumulated liquid is collected in the collecting bottle 21. Relying on the accumulation of the accumulated liquid, the airbag cushion 33 can lift the counterweight plate 32 by relying on the buoyancy of the accumulated liquid. As the accumulated liquid gradually accumulates, the counterweight plate 32 gradually rises until the extrusion block 34 touches the switch 35 and triggers it. During this period, the limit tube 31 will ensure the stability of the rise of the counterweight plate 32 and prevent the counterweight plate 32 from deviating at will. After the switch 35 is triggered, the electric valve 38 is controlled to open, allowing the accumulated liquid to flow into the waste liquid bottle 37 through the drain pipe 36 for collection.

[0035] Please refer again Figures 7 to 12 The drainage tube 41 is connected to the inlet at the upper end of the collecting bottle 21. The suction assembly 40 also includes a negative pressure sensor 42. The negative pressure sensor 42 is fixedly mounted on the lower right end of the outer ring of the drainage tube 41, and the detection head of the negative pressure sensor 42 is placed in the inner cavity of the drainage tube 41. The suction assembly 40 also includes a placement rod 43, which is fixedly connected to the middle of the inner cavity of the mounting box 51, and a rotating rod 44 is rotatably connected to the middle of the placement rod 43 through a sealed bearing. Both ends of the rotating rod 44 extend out of the placement rod 43, and the parts extending out of the placement rod 43 at both ends are fixedly connected to a cutter 45.

[0036] It should be noted that the portion of the mounting box 51 that mounts the placement rod 43 is a hard tube, and the rest of the portion is a soft tube. This is intended to utilize the hard tube to mount the placement rod 43 and the drive assembly 50, thereby preventing the folding characteristics of the soft tube from interfering with the use of the cutter 45. The cutters 45 are divided into two groups, one at each end of the rotating rod 44. The cutter 45 on the left side of the rotating rod 44 consists of two blades, one long and one short, while the cutter 45 on the right side consists of three identical blades arranged in a ring. This is designed to use the long and short blades to deal with solid objects of different sizes. The ring-shaped blades further chop the cut solid objects to prevent subsequent accumulation within the hose and blockage. The center of the rotating rod 44 is located at the center of the drainage tube 41 so as to chop the solid matter in the drainage tube 41; The cutters 45 are all surgical grade, designed to compensate for low pressure with high sharpness so that solid objects can be cut smoothly; The cutter 45 is mounted on both ends of the rotating rod 44 by a detachable fixed connection, such as a clip connection or a bolt connection. In this embodiment, a bolt connection is preferred so that the cutter 45 can be removed separately for maintenance during subsequent maintenance.

[0037] In this embodiment, the drainage tube 41 is placed in the patient's body during use, and the negative pressure drainage operation is waited for to be performed. At the same time, the negative pressure sensor 42 will always detect the negative pressure in the tube, and will issue an alarm once the negative pressure is abnormal.

[0038] Please refer again Figures 10 to 12 The drive assembly 50 also includes a mounting box 51, which is fixedly connected to the drainage tube 41, and a drive shaft 52 is rotatably connected to the middle of the inner cavity of the mounting box 51 through a ball bearing, and the middle of the drive shaft 52 is fixedly connected to a wire drum 53, and the upper end of the pull rope 54 is fixedly connected to the inside of the wire drum 53, and the lower end of the pull rope 54 passes through the drainage tube 41 and is fixedly connected to the upper end of the counterweight plate 32; The driving assembly 50 also includes a gear 1 55, which is fixedly connected to the left outer ring of the driving shaft 52. The lower end of the inner cavity of the mounting box 51 is rotatably connected to a gear rod 56 through a ball bearing. The right end of the gear rod 56 is fixedly connected to a gear 2 57. The outer ring of gear 2 57 is engaged with the outer ring of gear 1 55, and the middle outer ring of the gear rod 56 is engaged with a chain 58. The lower end of the chain 58 passes through the mounting box 51 and the placement rod 43 and is engaged with the middle outer ring of the rotating rod 44. The two ends of the driving shaft 52 are respectively fixedly connected to a spiral spring 59, and the other end of the spiral spring 59 is fixedly connected to the inner cavity of the mounting box 51.

[0039] It should be noted that the sum of the elastic forces of the two sets of coil springs 59 should be smaller than the downward force generated by the weight of the counterweight plate 32. This is intended to allow the counterweight plate 32 to descend and pull the pull rope 54 downward when the accumulated liquid in the collection bottle 21 is discharged, thereby rotating the drive shaft 52. When the accumulated liquid accumulates and rises, the pull rope 54 is gradually retracted as the counterweight plate 32 rises. At this time, the elastic force of the coil spring 59 drives the drive shaft 52 to return and rotate. Both sets of rotational forces can be transmitted to the rotating rod 44 through the gear rod 56, thereby controlling the rotation of the cutter 45 to cut the solid matter. (Because the amplitude of the accumulated liquid rising is too small, the liquid level rising speed caused by the accumulated liquid is too slow, resulting in too little force from the counterweight plate 32. Therefore, in this embodiment, daily maintenance should mainly rely on the force generated by the descending counterweight plate 32 when draining the liquid). The counterweight plate 32 should be built with a lead plate, relying only on the airbag cushion 33 to provide buoyancy to ensure the weight of the counterweight plate 32, so as to avoid the counterweight plate 32 being too light to pull the drive shaft 52 to rotate and drive the cutter 45 to cut the solid object; The drawstring 54 is made of medical-grade PE material to prevent the drawstring 54 from absorbing fluid and swelling, which would increase friction and affect normal use. The installation box 51 is composed of a lower circular tube and an upper box body, and both ends of the lower circular tube are connected to the drainage tube 41. When maintenance is required inside the installation box 51, the installation box 51 can be removed separately to avoid affecting the drainage operation. The upper end of the box body above the installation box 51 is a detachable structure (for example, fixed by bolts), and the detachable part should be provided with a sealing layer to ensure the stability of the connection, so that when the interior of the installation box 51 is maintained separately, maintenance can be performed by disassembling the upper end of the box body; The middle portion of the gear rod 56 and the middle portion of the rotating rod 44 are both provided with tooth grooves, and the chain 58 is engaged through the tooth grooves; Here, even if the counterweight plate 32 rises to the top, the spiral spring 59 should still have a rebound force, thereby ensuring that the pull rope 54 is in a taut state; In order to ensure the sealing effect of the installation box 51, the sealing bearing provided between the rotating rod 44 and the placement rod 43 should be an airtight bearing.

[0040] Preferably, a snap-fit ​​assembly should be provided at the upper end of the counterweight plate 32 so that, in a normal state, the pull rope 54 can be connected to the counterweight plate 32 by the snap-fit ​​assembly so that the pull rope 54 and the counterweight plate 32 can be disassembled to avoid affecting the removal of the collection bottle 21. When the negative pressure sensor 42 detects abnormal pressure in the drainage tube 41, it can transmit a signal to the controller 15, thereby opening the electric valve 38 in advance to drain the liquid, so that the counterweight plate 32 can be lowered to drive the cutter 45 to rotate and crush the solid matter.

[0041] In this embodiment, if the negative pressure in the drainage tube is abnormal and solid objects are blocked during use, the electric valve 38 is immediately activated to open and drain the liquid. At this time, the counterweight plate 32 loses its buoyancy and falls rapidly, pulling the pull rope 54 downward, which in turn drives the wire drum 53 and the drive shaft 52 to rotate, driving the rotation of gear 1 55. Gear 1 55 then drives gear 2 57 and gear rod 56, which in turn drives the rotating rod 44 via the chain 58, causing the cutter 45 to rotate and shred the solid objects in the drainage tube 41, thereby preventing the drainage process from being affected. When the counterweight plate 32 rises again, the coiled spring 59 rebounds, causing the drive shaft 52 to return to its original position and retract the pull rope 54, waiting for the next shredding operation.

[0042] Please refer again Figures 10 to 12 The manual assembly 60 includes two groups of sliding tubes 61, which are respectively fixedly connected to the upper ends of the inner cavity of the installation box 51, and the two groups of sliding tubes 61 are symmetrically arranged. The inner cavities of the two groups of sliding tubes 61 are slidably connected with lifting blocks 62, and the lower ends of the two groups of lifting blocks 62 are fixedly connected with springs 63. The lower ends of the springs 63 are respectively fixedly connected to the lower ends of the inner cavities of the two groups of sliding tubes 61. The middle parts of the two groups of lifting blocks 62 are rotatably connected to gear three 64 through ball bearings, and a through slot is opened at the upper end of the installation box 51. The upper end of gear three 64 extends out of the installation box 51 through the through slot, and the lower end of gear three 64 is arranged above gear one 55.

[0043] It should be noted that gear three 64 can mesh with gear one 55, and the outer ring of gear three 64 is provided with an anti-slip groove for easy pushing, so that in an emergency, solid objects can be crushed manually; Preferably, the shredding operation for solid objects can be divided into two states. In the normal state: for solid objects with soft texture and not too large particles, the cutter 45 can be driven to rotate by the force generated by the descending of the counterweight plate 32 when draining liquid, so as to perform daily shredding maintenance; In an emergency, if there is no liquid accumulated in the collecting bottle 21 or the force generated by the descending counterweight plate 32 is unable to shred the solid matter, the gear three 64 should be pressed to drive the lifting block 62 downward, so that the lower outer ring of the gear three 64 engages with the gear one 55. Then, the gear three 64 can be manually rotated to drive the gear one 55 to rotate, causing the cutter 45 to rotate, thereby shredding the solid matter by manual force, thereby avoiding safety accidents caused by the solid matter being too large or too hard to be shredded.

[0044] In this embodiment, if there is no accumulated liquid in the collecting bottle 21, or the force generated by the descending counterweight plate 32 is unable to shred the solid matter, then the gear three 64 is pressed to make it descend, and drive the lifting block 62 to descend. At this time, the spring 63 squeezes and accumulates force, and after the gear three 64 descends and engages with the gear one 55, the gear three 64 can be manually rotated to drive the gear one 55 and the gear rod 56 to rotate, and then drive the rotating rod 44 and the cutter 45 to rotate to perform the shredding operation. After the shredding operation is completed, the gear three 64 is released, and the spring 63 will rebound quickly to reset the lifting block 62 and the gear three 64, waiting for the next operation.

[0045] The working principle of the present invention is: when in use, the negative pressure pump 28 runs and diffuses the negative pressure to the water seal bottle 22 and the collecting bottle 21 through the connecting pipe 24. At the same time, the drainage tube 41 is placed in the patient's body for drainage. At this time, the accumulated fluid will enter the collecting bottle 21 through the drainage tube 41. As the accumulated fluid gradually accumulates, the counterweight plate 32 rises gradually relying on the airbag cushion 33 until the extrusion block 34 touches the switch 35 and triggers it. At this time, the electric valve 38 is controlled to open, allowing the accumulated fluid to flow into the waste liquid bottle 37 through the drainage pipe 36 for collection, thereby avoiding excessive accumulation of fluid to affect the patient. At the same time, the negative pressure sensor 42 constantly monitors the negative pressure in the drainage tube 41. If the negative pressure becomes abnormal, an alarm sounds and the electric valve 38 is immediately activated to open and drain the liquid. At this point, the counterweight plate 32 loses its buoyancy and falls rapidly, pulling the pull rope 54 downward, which in turn drives the drive shaft 52 and gear 1 55 to rotate. Gear 1 55 then drives gear 2 57 and gear rod 56 to rotate, which in turn drives the rotating rod 44 via the chain 58, causing the cutter 45 to rotate and shred the solid matter in the drainage tube 41, thus preventing it from affecting the normal drainage process. If there is no liquid accumulated in the collection bottle 21, or if the force generated by the descending counterweight plate 32 is unable to shred the solid matter, the gear 3 64 is pressed downward to engage with the gear 1 55. Gear 3 64 can then be manually rotated, driving gear 1 55 and gear rod 56 to rotate, which in turn drives the rotating rod 44 and cutter 45 to rotate and shred the solid matter.

[0046] 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 negative pressure drainage device for thoracic surgery wounds, characterized by: include: A main body, wherein the inner cavity of the main body is provided with a negative pressure component; The negative pressure component includes a collecting bottle placed in the inner cavity of the main body, and a water seal bottle and a pressure measuring bottle are also placed in the inner cavity of the main body; The drainage assembly includes a counterweight plate, which is arranged in the collection bottle, and a switch is fixedly connected to the upper end of the inner cavity of the collection bottle. The rear side of the collection bottle is connected to the waste liquid bottle, and an electric valve is provided between the waste liquid bottle and the collection bottle; The suction component includes a drainage tube, which is arranged at the upper end of the collection bottle, and a rotating rod is provided in the inner cavity of the drainage tube, and cutters are provided at both ends of the rotating rod; The drive assembly includes a mounting box connected to the drainage tube, and a drive shaft is provided in the mounting box, the drive shaft is arranged above the drainage tube, a pull rope is provided in the drive shaft, the lower end of the pull rope is connected to the counterweight plate, and a gear rod is provided at the lower end of the drive shaft, and the gear rod is connected to the rotating rod; A manual component is arranged above the driving component; When the accumulated liquid enters the collection bottle, the counterweight plate rises, driving the pull rope to rise and causing the drive shaft to rotate, thereby driving the rotating rod and the cutter to rotate; When the counterweight plate rises to the top, the switch is triggered, causing the electric valve to open and drain the accumulated liquid into the waste liquid bottle.

2. The thoracic surgery wound negative pressure drainage device according to claim 1, characterized in that: The lower end of the main body is rotatably connected to a universal wheel via a rotating shaft, and the upper right end of the main body is rotatably connected to a handle. The lower front end of the main body is hinged with door 1, and the lower back end is hinged with door 2. A controller is fixedly installed on the rear side of the inner cavity of the main body.

3. The thoracic surgery wound negative pressure drainage device according to claim 1, characterized in that: Two groups of partitions are fixedly connected to the lower end of the inner cavity of the main body, and the collecting bottle, water seal bottle and pressure measuring bottle are respectively placed in the area separated by the two groups of partitions. The negative pressure component also includes a connecting pipe. Connecting pipes are connected between the collecting bottle and the water seal bottle, as well as between the water seal bottle and the pressure measuring bottle. The inner cavity of the pressure measuring bottle is connected to a vent pipe, and the upper end of the vent pipe extends out of the main body and is fixedly connected to a dust cover. The right side of the upper end of the pressure measuring bottle is connected to a negative pressure pipe. A negative pressure pump is fixedly installed on the rear side of the inner cavity of the main body, and the rear end of the negative pressure pipe is connected to the negative pressure pump.

4. The thoracic surgery wound negative pressure drainage device according to claim 1, characterized in that: The discharge assembly also includes a limit tube, which is fixedly installed on the rear side of the inner cavity of the collection bottle, and the counterweight plate is slidably connected to the inner cavity of the limit tube. The lower end of the counterweight plate is fixedly connected to multiple groups of airbag cushions, and the upper end of the counterweight plate is fixedly connected to an extrusion block, which is arranged below the switch.

5. The thoracic surgery wound negative pressure drainage device according to claim 4, characterized in that: The drainage assembly also includes a drainage pipe, which is connected to the lower end of the rear side of the collecting bottle, and the rear end outlet of the drainage pipe is movably inserted into the upper end inlet of the waste liquid bottle, and the waste liquid bottle is placed at the lower end of the rear side of the main body cavity, and the electric valve is installed on the outer ring of the drainage pipe.

6. The thoracic surgery wound negative pressure drainage device according to claim 1, characterized in that: The drainage tube is connected to the inlet at the upper end of the collecting bottle. The suction component also includes a negative pressure sensor, which is fixedly installed at the lower right end of the outer ring of the drainage tube, and the detection head of the negative pressure sensor is placed in the inner cavity of the drainage tube.

7. The thoracic surgery wound negative pressure drainage device according to claim 6, characterized in that: The suction assembly also includes a placement rod, which is fixedly connected to the middle of the inner cavity of the installation box, and a rotating rod is rotatably connected to the middle of the placement rod through a sealed bearing. Both ends of the rotating rod extend out of the placement rod, and the parts extending out of the placement rod at both ends are fixedly connected to a cutter.

8. The thoracic surgery wound negative pressure drainage device according to claim 7, characterized in that: The drive assembly also includes an installation box, which is fixedly connected to the drainage tube, and the drive shaft is rotatably connected to the middle of the inner cavity of the installation box through a ball bearing, and the middle of the drive shaft is fixedly connected to the wire drum, and the upper end of the pull rope is fixedly connected to the inside of the wire drum, and the lower end of the pull rope passes through the drainage tube and is fixedly connected to the upper end of the counterweight plate.

9. The thoracic surgery wound negative pressure drainage device according to claim 8, characterized in that: The driving assembly also includes gear 1, which is fixedly connected to the left outer ring of the driving shaft. The lower end of the inner cavity of the mounting box is rotatably connected to the gear rod through a ball bearing. The right end of the gear rod is fixedly connected to gear 2. The outer ring of gear 2 is engaged with the outer ring of gear 1, and the middle outer ring of the gear rod is engaged with a chain. The lower end of the chain passes through the mounting box and the placement rod and is engaged with the middle outer ring of the rotating rod. The two ends of the driving shaft are respectively fixedly connected to a spiral spring, and the other end of the spiral spring is fixedly connected to the inner cavity of the mounting box.

10. The thoracic surgery wound negative pressure drainage device according to claim 9, characterized in that: The manual assembly includes two groups of sliding tubes, which are fixedly connected to the upper ends of the inner cavity of the installation box, and the two groups of sliding tubes are symmetrically arranged. The inner cavities of the two groups of sliding tubes are slidably connected with lifting blocks, and the lower ends of the two groups of lifting blocks are fixedly connected with springs. The lower ends of the springs are fixedly connected to the lower ends of the inner cavities of the two groups of sliding tubes. The middle parts of the two groups of lifting blocks are rotatably connected to gear three through ball bearings, and a through slot is provided at the upper end of the installation box. The upper end of gear three extends out of the installation box through the through slot, and the lower end of gear three is arranged above gear one.

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