Anti-blocking drainage device

Abstract

The invention discloses an anti-blocking drainage device, and belongs to the technical field of drainage instruments, the anti-blocking drainage device comprises a case, a flushing mechanism, a negative pressure suction mechanism, a U-shaped pipe, and a flushing pipe fitting and a drainage pipe fitting which are arranged in the U-shaped pipe in a sliding manner, and the negative pressure suction mechanism and the flushing mechanism are arranged in the case; the U-shaped tube comprises an arc-shaped section, a flushing section and a drainage section, the flushing section and the drainage section are arranged at the two ends of the arc-shaped section in a communicated mode, the end of the flushing section is connected with a flushing hose, the end of the drainage section is connected with a drainage hose, the drainage hose is connected with a negative pressure suction mechanism, and the flushing hose is connected with a flushing mechanism. Outer flushing holes are distributed in the end, close to the flushing section, of the U-shaped pipe in the circumferential direction in an array mode, and outer drainage holes are distributed in the end, close to the drainage section, of the U-shaped pipe in the circumferential direction in an array mode. According to the anti-blocking drainage device provided by the invention, the drainage head and the drainage tube can be flushed, so that the problem of drainage tube blockage is avoided, and meanwhile, an operation area can be flushed.

Description

Technical Field

[0001] The present invention belongs to the technical field of drainage devices, and specifically refers to an anti-blocking drainage device. Background Art

[0002] A drainage tube is used for clinical surgical drainage, guiding pus, blood, and fluid accumulated in human tissues or body cavities to the outside of the body, and is a medical device for preventing postoperative infection and promoting wound healing. There are many types of surgical drainage tubes used clinically, some for urinary catheterization, some for wounds, and they are also used in the chest cavity, brain cavity, gastrointestinal tract, biliary tract, etc. Surgical drainage aims to guide pus, blood, and fluid accumulated in human tissues or body cavities to the outside of the body to prevent postoperative infection and affect wound healing.

[0003] After traditional drainage tubes drain, the fluid is introduced into a fluid bag, and the full fluid bag is replaced during the operation. However, due to the relatively high viscosity of the drainage fluid of some patients, it is easy to cause blockage of the drainage tube during drainage. Blockage of the drainage tube leads to problems such as infection and tissue damage, which will make the patient's condition more complex and serious, increasing the difficulty of treatment. In case of blockage, the drainage tube needs to be replaced or flushed and dredged. After flushing the drainage tube, warm saline or metronidazole needs to be used for flushing and disinfection to avoid infection. The steps are cumbersome and the workload of medical staff is large. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an anti-blocking drainage device, which can flush the drainage head and the drainage tube to avoid the problem of drainage tube blockage, and can also flush the surgical area.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides an anti-blocking drainage device, comprising a chassis, a flushing mechanism, a negative pressure suction mechanism, a U-shaped tube, and flushing pipe fittings and drainage pipe fittings slidably arranged in the U-shaped tube, the negative pressure suction mechanism and the flushing mechanism are arranged in the chassis, the U-shaped tube comprises an arc section and a flushing section and a drainage section connected at both ends of the arc section, the end of the flushing section is connected to a flushing hose, the end of the drainage section is connected to a drainage hose, the drainage hose is connected to the negative pressure suction mechanism, the flushing hose is connected to the flushing mechanism, the end of the U-shaped tube close to the flushing section is provided with external flushing holes distributed along a circumferential array, the end of the U-shaped tube close to the drainage section is provided with external drainage holes distributed along a circumferential array Flow holes, the flushing pipe is provided with inner flushing holes distributed in a circumferential array, the drainage pipe is provided with inner drainage holes distributed in a circumferential array, an air source is provided in the chassis, a flushing line moving drive component for driving the flushing pipe to slide is provided between the end of the flushing pipe and the flushing section, a drainage line moving drive component for driving the drainage pipe to slide is provided between the end of the drainage pipe and the drainage section, an annular groove one is provided on the inner wall of the flushing section along the circumferential direction, the annular groove one and the outer flushing holes are axially staggered, a strip groove one is provided between the annular groove one and the arc section, an annular groove two is provided on the inner wall of the drainage section along the circumferential direction, the annular groove two and the outer drainage holes are axially staggered, and a strip groove two is provided between the annular groove two and the arc section.

[0006] When the inner flushing hole is aligned with the outer flushing hole, the flushing mechanism, flushing hose, flushing pipe fittings, inner flushing hole and outer flushing hole constitute a first flushing input channel for flushing the surgical area; when the outer drainage hole is aligned with the inner drainage hole, the drainage mechanism, drainage hose, drainage pipe fittings, inner drainage hole and outer drainage hole constitute a drainage output channel; when the drainage tube needs to be flushed, the flushing line shift drive assembly is used to drive the flushing pipe fittings to move linearly, and the drainage line shift drive assembly is used to drive the drainage pipe fittings to move linearly, so that the inner flushing hole is aligned with annular groove one, and the inner drainage hole is aligned with annular groove two. At this time, the flushing mechanism, flushing hose, flushing pipe fittings, inner flushing hole, annular groove one, strip groove one, arc segment, strip groove two, annular groove two, inner drainage hole, drainage pipe fittings, drainage hose and drainage mechanism constitute a drainage tube flushing channel.

[0007] Preferably, a flushing active area is provided on the flushing section, and a drainage active area is provided on the drainage section. The first annular groove and the outer flushing holes are arranged in the flushing active area. Multiple groups of the first annular groove and the outer flushing holes are respectively arranged in an axial array along the flushing active area. The first annular groove and the outer flushing holes are spaced apart along the axis of the flushing active area. The first strip-shaped groove is arranged in a circumferential array around the flushing section. The first strip-shaped groove communicates with multiple arrayed first annular grooves. The second annular groove and the outer drainage holes are arranged in the drainage active area. Multiple groups of the second annular groove and the outer drainage holes are arranged in an axial array along the drainage active area. The second annular groove and the outer drainage holes are spaced apart along the axis of the drainage active area. The second strip-shaped groove is arranged in a circumferential array around the drainage section. The second strip-shaped groove communicates with multiple arrayed second annular grooves.

[0008] Preferably, the air source is a suction and blowing dual-purpose air pump. An air source connector one and an air source connector two are provided on the upper wall of the chassis. A flushing air pipe is provided on the side wall of the flushing hose. A drainage air pipe is provided on the side wall of the drainage hose. The flushing air pipe is communicatively arranged between the air source connector one and the flushing wire movement driving assembly. The drainage air pipe is communicatively arranged between the air source connector two and the drainage wire movement driving assembly.

[0009] Among them, the flushing wire movement driving assembly includes a flushing rectangular pipe, a flushing piston, a pneumatic piston one, and a flushing spring. The pneumatic piston one is coaxially fixed at one end of the flushing pipe member away from the arc section. The pneumatic piston one is slidably and sealingly connected to the inner wall of the flushing section. The flushing rectangular pipe fixedly penetrates the end of the flushing section away from the arc section. The flushing rectangular pipe is coaxially arranged inside the flushing section. The flushing rectangular pipe communicates with the flushing hose. A flushing rectangular hole matching the flushing rectangular pipe is provided on the pneumatic piston one. The flushing rectangular pipe slidably passes through the flushing rectangular hole and is arranged inside the flushing pipe member. The flushing piston is coaxially sleeved outside the flushing rectangular pipe. The flushing piston is slidably and sealingly connected to the inner wall of the flushing pipe member. An inner flushing hole is provided on one side of the flushing piston close to the arc section. The pneumatic piston one is arranged on one side of the flushing active area away from the arc section. A first limiting ring is coaxially arranged on the inner wall of the flushing section. The first limiting ring is arranged between the pneumatic piston one and the flushing active area. The flushing spring is arranged between the pneumatic piston one and the inner wall of the end of the flushing section away from the arc section. The flushing spring makes the pneumatic piston one tend to be in contact with the first limiting ring. A first air hole is provided on the circumferential side wall of the end of the flushing section away from the arc section. The flushing air pipe is connected to the first air hole.

[0010] The flushing piston divides the flushing pipe fitting into two independent cavities. The cavity on the side of the flushing piston close to the arc section is the flushing cavity. Initially, the flushing spring pushes the air-driven piston one to fit with the limiting ring one, and the inner flushing hole is aligned with the outer flushing hole. At this time, the flushing liquid flows into the flushing cavity through the flushing rectangular pipe, and then flows to the outside of the U-shaped pipe through the flushing cavity, the inner flushing hole and the outer flushing hole to flush the patient's surgical area. When it is necessary to flush the drainage pipe fitting, the suction and dual-purpose air pump sucks air through the flushing air pipe. The flushing air pipe creates negative pressure on the side of the air-driven piston one away from the arc section, thereby driving the air-driven piston one to move away from the limiting ring one against the elastic force of the flushing spring. The air-driven piston one drives the flushing pipe fitting to move, so that the inner flushing hole moves to align with the annular groove one. At this time, the sealing ring one on the side wall of the outer flushing hole is in close contact with the side wall of the flushing pipe fitting.

[0011] Further, the drainage wire moving drive assembly includes a drainage rectangular pipe, a drainage piston, an air-driven piston two, and a drainage spring. The air-driven piston two is coaxially fixed at one end of the drainage pipe fitting away from the arc section. The air-driven piston two is slidably and sealingly connected to the inner wall of the drainage section. The drainage rectangular pipe is fixedly penetrated through the end of the drainage section away from the arc section. The drainage rectangular pipe is coaxially arranged in the drainage section and is communicated with the drainage hose. The air-driven piston two is provided with a drainage rectangular hole matching the drainage rectangular pipe. The drainage rectangular pipe slidably passes through the drainage rectangular hole and is arranged in the drainage pipe fitting. The drainage piston is coaxially sleeved on the outer side of the drainage rectangular pipe. The drainage piston is slidably and sealingly connected to the inner wall of the drainage pipe fitting. The inner drainage hole is arranged on the side of the drainage piston close to the arc section. The air-driven piston two is arranged on the side of the drainage activity area away from the arc section. The inner wall of the drainage section is coaxially provided with a limiting ring two. The limiting ring two is arranged between the air-driven piston two and the drainage activity area. The drainage spring is arranged between the air-driven piston two and the inner wall of the end of the drainage section away from the arc section. The drainage spring makes the air-driven piston two tend to fit with the limiting ring two. The circumferential side wall of the end of the drainage section away from the arc section is provided with a second air hole. The drainage air pipe is connected to the second air hole.

[0012] The drainage piston divides the drainage pipe fitting into two independent cavities. The cavity on the side of the drainage piston close to the arc segment is the drainage cavity. Initially, the drainage spring pushes the pneumatic drive piston II to fit with the limit ring II, and the inner drainage hole is aligned with the outer drainage hole. At this time, the negative pressure suction mechanism generates negative pressure in the drainage cavity through the drainage hose and the drainage rectangular pipe, and sucks the effusion generated in the patient's surgical area into the drainage pipe fitting through the inner drainage hole and the outer drainage hole, and leads it out through the drainage rectangular pipe and the drainage hose. When it is necessary to flush the drainage pipe fitting, the suction and drainage dual-purpose air pump evacuates air through the drainage air pipe. The drainage air pipe makes the side of the pneumatic drive piston II far from the arc segment generate negative pressure, thereby driving the pneumatic drive piston II to move away from the limit ring II against the elastic force of the drainage spring. The pneumatic drive piston II drives the drainage pipe fitting to move, so that the inner drainage hole moves to align with the annular groove II. At this time, the sealing ring II on the side wall of the outer drainage hole is closely attached to the side wall of the drainage pipe fitting.

[0013] As a further improvement of this solution, a clamping type anti-detachment device is installed in the middle of the flushing hose and the drainage hose. The clamping anti-detachment device includes an anti-detachment fixed shell, a clamping member, a reel, a detection ring, a pressure sensor, a controller and a buzzer. The clamping member is arranged on the side wall of the anti-detachment fixed shell. One end of the anti-detachment fixed shell is provided with a fixing hole through it, and the other end of the anti-detachment fixed shell is provided with a sliding hole through it. The middle parts of the flushing hose and the drainage hose penetrate through the anti-detachment fixed shell. The flushing hose and the drainage hose pass through the fixing hole and are fixedly connected with the fixing hole. The flushing hose and the drainage hose slide through the sliding hole. The reel is symmetrically and rotatably arranged in the anti-detachment fixed shell. The flushing hose and the drainage hose are respectively wound around the two reels. A winding spring is arranged between the reel and the anti-detachment fixed shell. The pressure sensors are symmetrically arranged on the inner wall of the anti-detachment fixed shell close to the sliding hole side. The detection rings are respectively arranged on the flushing hose and the drainage hose. The controller is electrically connected with the pressure sensor and the buzzer respectively. The detection rings are fixed on the parts of the flushing hose wound around the reel and the parts of the drainage hose wound around the reel. The flushing hose and the drainage hose wound around the reel can play a buffering role when being pulled to avoid detachment. When the detection ring moves to press the pressure sensor, the pressure sensor generates an electrical signal to trigger the controller to control the buzzer to alarm, so as to avoid the patient further pulling the flushing hose and the drainage hose, effectively preventing detachment.

[0014] Furthermore, a sealing ring I is arranged on the inner wall of the flushing section, and the sealing ring I is arranged at the upper and lower ends of the annular groove I. A sealing ring I is arranged on the inner wall of the flushing section, and the sealing ring I is coaxially arranged with the outer flushing hole, and the sealing ring I corresponds to the outer flushing hole one by one. A sealing ring II is arranged on the inner wall of the drainage section, and the sealing ring II is arranged at the upper and lower ends of the annular groove II. A sealing ring II is arranged on the inner wall of the drainage section, and the sealing ring II is coaxially arranged with the outer drainage hole, and the sealing ring II corresponds to the outer flushing hole one by one.

[0015] Further, the flushing mechanism includes a flushing pump, a flushing bottle, and a liquid delivery hose. A flushing card slot is provided on the side wall of the chassis. The flushing bottle is clamped in the flushing card slot. The flushing pump is arranged inside the chassis. A flushing input interface and a flushing output interface, which are respectively connected to the input end and the output end of the flushing pump, are provided on the upper wall of the chassis. The liquid delivery hose is communicatively arranged between the flushing bottle and the flushing input interface. The flushing hose is connected to the flushing output interface.

[0016] Further, the negative pressure suction mechanism includes a negative pressure pump, a drainage bottle, and a negative pressure hose. A drainage card slot is provided on the side wall of the chassis. The negative pressure pump is arranged inside the chassis. The drainage bottle is clamped in the drainage card slot. A negative pressure interface connected to the negative pressure pump is provided on the upper wall of the chassis. The negative pressure hose is communicatively arranged between the negative pressure interface and the drainage bottle. The drainage hose is communicatively connected to the drainage bottle; the negative pressure pump generates negative pressure in the drainage bottle through the negative pressure hose, so as to drain the accumulated fluid in the patient's surgical area through the drainage hose.

[0017] The beneficial effects achieved by the present invention with the above structure are as follows: 1. Connect the flushing hose and the drainage hose together through a U-shaped tube, which can not only flush and drain the surgical area, but also drain alone. Moreover, due to the smooth transition of the U-shaped tube, it is more convenient to insert into the patient's body, improving the use comfort and reducing the patient's pain.

[0018] 2. Drive the flushing pipe fitting and the drainage pipe fitting to linearly move through the flushing wire movement driving assembly and the drainage wire movement driving assembly, so that the inner flushing hole is aligned with the first annular groove, and the inner drainage hole is aligned with the second annular groove. At this time, the flushing mechanism, the flushing hose, the flushing pipe fitting, the inner flushing hole, the first annular groove, the first strip-shaped groove, the arc section, the second strip-shaped groove, the second annular groove, the inner drainage hole, the drainage pipe fitting, the drainage hose, and the drainage mechanism form a closed drainage pipe flushing channel, which is convenient for flushing the drainage channel.

[0019] 3. When flushing the drainage pipe, the inner drainage port and the patient's surgical area are separated by the tube wall of the U-shaped tube. At this time, increase the suction force of the negative pressure suction mechanism, which is easier to suck the blockage at the inner drainage hole into the pipe fitting, and will not cause harm to the patient's surgical area.

[0020] 4. When the patient turns over or moves and pulls the pipeline, the clamping type anti-disconnection device plays a buffering role for the pipeline on the one hand, and can give an alarm in time on the other hand, avoiding the pipeline from falling off due to excessive pulling by the patient. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of an anti-blocking drainage device provided by the present invention; Figure 2 It is a schematic structural diagram of an anti-blocking drainage device from another perspective provided by the present invention; Figure 3 Cross-sectional view of the U-shaped tube, flushing pipe fitting and drainage pipe fitting provided by the present invention; Figure 4 Schematic diagram of the combined structure of the U-shaped tube, flushing pipe fitting and drainage pipe fitting provided by the present invention; Figure 5 Cross-sectional view of the U-shaped tube provided by the present invention; Figure 6 Exploded view of the U-shaped tube, flushing pipe fitting and drainage pipe fitting provided by the present invention; Figure 7 Schematic diagram of the combined structure of the clamping type anti-disconnection device, drainage hose and flushing hose provided by the present invention; Figure 8 Cross-sectional view of the clamping type anti-disconnection device provided by the present invention; Figure 9 Front view of an anti-blocking drainage device provided by the present invention.

[0022] Among them, 1. Chassis, 2. Negative pressure suction mechanism, 3. Flushing mechanism, 4. U-shaped tube, 5. Flushing pipe fitting, 6. Drainage pipe fitting, 7. Arc section, 8. Flushing section, 9. Drainage section, 10. Drainage hose, 11. Flushing hose, 12. Outer flushing hole, 13. Outer drainage hole, 14. Inner flushing hole, 15. Air source, 16. Flushing line movement driving assembly, 17. Drainage line movement driving assembly, 18. First annular groove, 19. First strip-shaped groove, 20. Second annular groove, 21. Second strip-shaped groove, 22. Flushing activity area, 23. Drainage activity area, 24. First sealing ring, 25. First sealing collar, 26. Second sealing ring, 27. Second sealing collar, 28. First air source connector, 29. Second air source connector, 30. Clamping type anti-disconnection device, 31. Drainage air pipe, 32. Flushing rectangular pipe, 33. Flushing piston, 34. First air-driven piston, 35. Flushing spring, 36. First limiting ring, 37. Drainage rectangular pipe, 38. Drainage piston, 39. Second air-driven piston, 40. Drainage spring, 41. Second limiting ring, 42. Flushing pump, 43. Flushing bottle, 44. Liquid delivery hose, 45. Flushing card slot, 46. Flushing input interface, 47. Flushing output interface, 48. Negative pressure pump, 49. Drainage bottle, 50. Negative pressure hose, 51. Drainage card slot, 52. Negative pressure interface, 53. Flushing air pipe, 54. Anti-disconnection fixed shell, 55. Clamping member, 56. Reel, 57. Detection ring, 58. Pressure sensor, 59. Controller, 60. Buzzer, 61. Fixing hole, 62. Sliding hole, 63. Torsion spring, 64. Inner drainage hole.

[0023] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. Detailed implementation manners

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0026] like Figures 1-9 As shown, an anti-blocking drainage device provided by the present invention includes a chassis 1, a flushing mechanism 3, a negative pressure suction mechanism 2, a U-shaped tube 4, and a flushing pipe fitting 5 and a drainage pipe fitting 6 slidably arranged in the U-shaped tube 4, the negative pressure suction mechanism 2 and the flushing mechanism 3 are arranged in the chassis 1, the U-shaped tube 4 includes an arc segment 7 and a flushing segment 8 and a drainage segment 9 connected at both ends of the arc segment 7, the end of the flushing segment 8 is connected to a flushing hose 11, the end of the drainage segment 9 is connected to a drainage hose 10, the drainage hose 10 is connected to the negative pressure suction mechanism 2, the flushing hose 11 is connected to the flushing mechanism 3, the end of the U-shaped tube 4 close to the flushing segment 8 is provided with external flushing holes 12 distributed along a circumferential array, the end of the U-shaped tube 4 close to the drainage segment 9 is provided with external drainage holes 13 distributed along a circumferential array, the drainage hose 10 is connected to the negative pressure suction mechanism 2, and the flushing hose 11 is connected to the flushing mechanism 3. The flow pipe fitting 6 is provided with inner drainage holes 64 distributed in a circumferential array, the flushing pipe fitting 5 is provided with inner flushing holes 14 distributed in a circumferential array, the chassis 1 is provided with an air source 15, a flushing line moving driving assembly 16 for driving the flushing pipe fitting 5 to slide is provided between the flushing pipe fitting 5 and the flushing section 8, a drainage line moving driving assembly 17 for driving the drainage pipe fitting 6 to slide is provided between the drainage pipe fitting 6 and the drainage section 9, an annular groove 18 is provided on the inner wall of the flushing section 8 in the circumferential direction, the annular groove 18 and the outer flushing hole 12 are axially staggered, a strip groove 19 is provided between the annular groove 18 and the arc section 7, an annular groove 20 is provided on the inner wall of the drainage section 9 in the circumferential direction, the annular groove 20 and the outer drainage hole 13 are axially staggered, and a strip groove 21 is provided between the annular groove 20 and the arc section 7.

[0027] When the inner flushing hole 14 is aligned with the outer flushing hole 12, at this time, the flushing mechanism 3, the flushing hose 11, the flushing pipe fitting 5, the inner flushing hole 14 and the outer flushing hole 12 form a first flushing input channel for flushing the surgical area; when the outer drainage hole 13 is aligned with the inner drainage hole 64, at this time, the drainage mechanism, the drainage hose 10, the drainage pipe fitting 6, the inner drainage hole 64 and the outer drainage hole 13 form a drainage output channel; when it is necessary to flush the drainage tube, the flushing pipe fitting 5 is driven to move linearly by the flushing wire moving drive assembly 16, and the drainage pipe fitting 6 is driven to move linearly by the drainage wire moving drive assembly 17, so that the inner flushing hole 14 is aligned with the first annular groove 18, and the inner drainage hole 64 is aligned with the second annular groove 20. At this time, the flushing mechanism 3, the flushing hose 11, the flushing pipe fitting 5, the inner flushing hole 14, the first annular groove 18, the first strip-shaped groove 19, the arc section 7, the second strip-shaped groove 21, the second annular groove 20, the inner drainage hole 64, the drainage pipe fitting 6, the drainage hose 10 and the drainage mechanism form a drainage tube flushing channel.

[0028] A flushing activity area 22 is provided on the flushing section 8, and a drainage activity area 23 is provided on the drainage section 9. The first annular groove 18 and the outer flushing hole 12 are arranged in the flushing activity area 22. Multiple groups of the first annular groove 18 and the outer flushing hole 12 are respectively arranged in an axial array along the flushing activity area 22. The first annular groove 18 and the outer flushing hole 12 are spaced apart along the axis of the flushing activity area 22. The first strip-shaped groove 19 is arranged in a circumferential array around the flushing section 8. The first strip-shaped groove 19 communicates with a plurality of annular grooves 18 arranged in an array. The second annular groove 20 and the outer drainage hole 13 are arranged in the drainage activity area 23. Multiple groups of the second annular groove 20 and the outer drainage hole 13 are arranged in an axial array along the drainage activity area 23. The second annular groove 20 and the outer drainage hole 13 are spaced apart along the axis of the drainage activity area 23. The second strip-shaped groove 21 is arranged in a circumferential array around the drainage section 9. The second strip-shaped groove 21 communicates with a plurality of annular grooves 20 arranged in an array.

[0029] A first sealing ring 24 is provided on the inner wall of the flushing section 8. The first sealing ring 24 is arranged at the upper and lower ends of the first annular groove 18. A first sealing ring 25 is provided on the inner wall of the flushing section 8. The first sealing ring 25 is coaxially arranged with the outer flushing hole 12, and the first sealing ring 25 corresponds to the outer flushing hole 12 one by one. A second sealing ring 26 is provided on the inner wall of the drainage section 9. The second sealing ring 26 is arranged at the upper and lower ends of the second annular groove 20. A second sealing ring 27 is provided on the inner wall of the drainage section 9. The second sealing ring 27 is coaxially arranged with the outer drainage hole 13, and the second sealing ring 27 corresponds to the outer flushing hole 12 one by one.

[0030] The air source 15 adopts a suction and discharge dual-purpose air pump. An air source connector one 28 and an air source connector two 29 are provided on the upper wall of the chassis 1. A flushing air pipe 53 is provided on the side wall of the flushing hose 11, and a drainage air pipe 31 is provided on the side wall of the drainage hose 10. The flushing air pipe 53 is communicated and arranged between the air source connector one 28 and the flushing line moving drive assembly 16, and the drainage air pipe 31 is communicated and arranged between the air source connector two 29 and the drainage line moving drive assembly 17.

[0031] The flushing line moving drive assembly 16 includes a flushing rectangular pipe 32, a flushing piston 33, an air-driven piston one 34 and a flushing spring 35. The air-driven piston one 34 is coaxially fixed at one end of the flushing pipe fitting 5 away from the arc section 7. The air-driven piston one 34 is slidably and sealingly connected to the inner wall of the flushing section 8. The flushing rectangular pipe 32 is fixedly penetrated through the end of the flushing section 8 away from the arc section 7. The flushing rectangular pipe 32 is coaxially arranged in the flushing section 8 and is communicated with the flushing hose 11. The air-driven piston one 34 is provided with a flushing rectangular hole matched with the flushing rectangular pipe 32. The flushing rectangular pipe 32 slidably passes through the flushing rectangular hole and is arranged in the flushing pipe fitting 5. The flushing piston 33 is coaxially sleeved on the outer side of the flushing rectangular pipe 32. The flushing piston 33 is slidably and sealingly connected to the inner wall of the flushing pipe fitting 5. The inner flushing hole 14 is arranged on one side of the flushing piston 33 close to the arc section 7. The air-driven piston one 34 is arranged on one side of the flushing active area 22 away from the arc section 7. A limiting ring one 36 is coaxially arranged on the inner wall of the flushing section 8. The limiting ring one 36 is arranged between the air-driven piston one 34 and the flushing active area 22. The flushing spring 35 is arranged between the air-driven piston one 34 and the inner wall of one end of the flushing section 8 away from the arc section 7. The flushing spring 35 makes the air-driven piston one 34 keep a tendency to fit with the limiting ring one 36. A first air hole is arranged on the circumferential side wall of one end of the flushing section 8 away from the arc section 7. The flushing air pipe 53 is connected to the first air hole.

[0032] The drainage line moving drive assembly 17 includes a drainage rectangular tube 37, a drainage piston 38, a pneumatic drive piston II 39, and a drainage spring 40. The pneumatic drive piston II 39 is coaxially and fixedly arranged at one end of the drainage pipe fitting 6 away from the arc section 7. The pneumatic drive piston II 39 is slidably and sealingly connected to the inner wall of the drainage section 9. The drainage rectangular tube 37 fixedly penetrates through the end of the drainage section 9 away from the arc section 7. The drainage rectangular tube 37 is coaxially arranged inside the drainage section 9 and is communicated with the drainage hose 10. The pneumatic drive piston II 39 is provided with a drainage rectangular hole that cooperates with the drainage rectangular tube 37. The drainage rectangular tube 37 slidably passes through the drainage rectangular hole and is arranged inside the drainage pipe fitting 6. The drainage piston 38 is coaxially sleeved outside the drainage rectangular tube 37. The drainage piston 38 is slidably and sealingly connected to the inner wall of the drainage pipe fitting 6. An inner drainage hole 64 is arranged on one side of the drainage piston 38 close to the arc section 7. The pneumatic drive piston II 39 is arranged on one side of the drainage active area 23 away from the arc section 7. A limiting ring II 41 is coaxially arranged on the inner wall of the drainage section 9. The limiting ring II 41 is arranged between the pneumatic drive piston II 39 and the drainage active area 23. The drainage spring 40 is arranged between the pneumatic drive piston II 39 and the inner wall of one end of the drainage section 9 away from the arc section 7. The drainage spring 40 makes the pneumatic drive piston II 39 keep a tendency to fit with the limiting ring II 41. A second air hole is arranged on the circumferential side wall of one end of the drainage section 9 away from the arc section 7. The drainage air pipe 31 is connected to the second air hole.

[0033] The flushing mechanism 3 includes a flushing pump 42, a flushing bottle 43, and a liquid delivery hose 44. A flushing card slot 45 is arranged on the side wall of the machine case 1. The flushing bottle 43 is clamped in the flushing card slot 45. The flushing pump 42 is arranged inside the machine case 1. A flushing input interface 46 and a flushing output interface 47 respectively connected to the input end and the output end of the flushing pump 42 are arranged on the upper wall of the machine case 1. The liquid delivery hose 44 is communicatively arranged between the flushing bottle 43 and the flushing input interface 46. The flushing hose 11 is connected to the flushing output interface 47. The negative pressure suction mechanism 2 includes a negative pressure pump 48, a drainage bottle 49, and a negative pressure hose 50. A drainage card slot 51 is arranged on the side wall of the machine case 1. The negative pressure pump 48 is arranged inside the machine case 1. The drainage bottle 49 is clamped in the drainage card slot 51. A negative pressure interface 52 connected to the negative pressure pump 48 is arranged on the upper wall of the machine case 1. The negative pressure hose 50 is communicatively arranged between the negative pressure interface 52 and the drainage bottle 49. The drainage hose 10 is communicated with the drainage bottle 49; the negative pressure pump 48 generates negative pressure in the drainage bottle 49 through the negative pressure hose 50, so as to drain the accumulated liquid in the patient's surgical area through the drainage hose 10.

[0034] A clamping type anti - detachment device 30 is installed in the middle of the flushing hose 11 and the drainage hose 10. The clamping anti - detachment device includes an anti - detachment fixed shell 54, a clamping member 55, a reel 56, a detection ring 57, a pressure sensor 58, a controller 59 and a buzzer 60. The clamping member 55 is arranged on the side wall of the anti - detachment fixed shell 54. In this embodiment, the clamping member 55 is a safety pin. A fixing hole 61 is penetrated through one end of the anti - detachment fixed shell 54, and a sliding hole 62 is penetrated through the other end of the anti - detachment fixed shell 54. The middle parts of the flushing hose 11 and the drainage hose 10 penetrate through the anti - detachment fixed shell 54. The flushing hose 11 and the drainage hose 10 pass through the fixing hole 61 and are fixedly connected with the fixing hole 61. The flushing hose 11 and the drainage hose 10 slide through the sliding hole 62. The reels 56 are symmetrically rotatably arranged in the anti - detachment fixed shell 54. The flushing hose 11 and the drainage hose 10 are respectively wound around the two reels 56. A torsion spring 63 is arranged between the reel 56 and the anti - detachment fixed shell 54. The pressure sensors 58 are symmetrically arranged on the inner wall of the anti - detachment fixed shell 54 close to the sliding hole 62. The detection rings 57 are respectively arranged on the flushing hose 11 and the drainage hose 10. The detection rings 57 are arranged on the parts of the flushing hose 11 wound around the reel 56 and the parts of the drainage hose 10 wound around the reel 56.

[0035] During specific use, insert the U-shaped tube 4 into the patient's surgical area and fix it. Then, fix the clamping type anti-disconnection device 30 on the patient's clothing with a safety pin. Start the negative pressure suction mechanism 2 for drainage. Initially, the drainage spring 40 pushes the pneumatic piston II 39 to fit with the limiting ring II 41, and the inner drainage hole 64 is aligned with the outer drainage hole 13. The drainage mechanism, the drainage hose 10, the drainage pipe fitting 6, the inner drainage hole 64, and the outer drainage hole 13 form a drainage output channel. Moreover, the flushing spring 35 pushes the pneumatic piston I 34 to fit with the limiting ring I 36, and the inner flushing hole 14 is aligned with the outer flushing hole 12. The flushing mechanism 3, the flushing hose 11, the flushing pipe fitting 5, the inner flushing hole 14, and the outer flushing hole 12 form a first flushing input channel for flushing the surgical area;The negative pressure pump 48 generates negative pressure in the drainage bottle 49 through the negative pressure hose 50. The drainage bottle 49 generates negative pressure in the drainage cavity through the drainage hose 10 and the drainage rectangular tube 37. The effusion generated in the patient's surgical area is attracted into the drainage pipe fitting 6 through the inner drainage hole 64 and the outer drainage hole 13, and is led out through the drainage rectangular tube 37 and the drainage hose 10. When flushing is required, the negative pressure pump 48 is kept working and the flushing pump 42 is started. The flushing pump 42 extracts the flushing liquid in the flushing bottle 43 through the liquid delivery hose 44 and sends it to the flushing rectangular tube 32 through the flushing hose 11. The flushing liquid flows into the flushing cavity through the flushing rectangular tube 32, and then flows to the outside of the U-shaped tube 4 through the flushing cavity, the inner flushing hole 14 and the outer flushing hole 12 to flush the patient's surgical area. Thus, the patient's surgical area can be flushed and drained simultaneously. When the drainage output channel is blocked, the suction and air supply dual-purpose air pump is started for air extraction. The suction and air supply dual-purpose air pump extracts air through the drainage air pipe 31. The drainage air pipe 31 causes negative pressure to be generated on the side of the air-driven piston II 39 away from the arc segment 7, thereby driving the air-driven piston II 39 to move away from the limit ring II 41 against the elastic force of the drainage spring 40. The air-driven piston II 39 drives the drainage pipe fitting 6 to move, so that the inner drainage hole 64 moves to align with the annular groove II 20, and the sealing ring II 27 on the side wall of the outer drainage hole 13 is closely attached to the side wall of the drainage pipe fitting 6. The suction and air supply dual-purpose air pump extracts air through the flushing air pipe 53. The flushing air pipe 53 causes negative pressure to be generated on the side of the air-driven piston I 34 away from the arc segment 7, thereby driving the air-driven piston I 34 to move away from the limit ring I 36 against the elastic force of the flushing spring 35. The air-driven piston I 34 drives the flushing pipe fitting 5 to move, so that the inner flushing hole 14 moves to align with the annular groove I 18, and the sealing ring I 25 on the side wall of the outer flushing hole 12 is closely attached to the side wall of the flushing pipe fitting 5. At this time, the flushing mechanism 3, the flushing hose 11, the flushing pipe fitting 5, the inner flushing hole 14, the annular groove I 18, the strip-shaped groove I 19, the arc segment 7, the strip-shaped groove II 21, the annular groove II 20, the inner drainage hole 64, the drainage pipe fitting 6, the drainage hose 10 and the drainage mechanism form a drainage pipe flushing channel. And when flushing the drainage output channel, the inner drainage port and the patient's surgical area are separated by the pipe wall of the U-shaped tube 4. At this time, the suction force of the negative pressure suction mechanism 2 is increased, and it is easier to suck the blockage at the inner drainage hole 64 into the drainage pipe without causing harm to the patient's surgical area. The flushing hose 11 and the drainage hose 10 are wound around the reel 56, which can play a buffering role when the patient moves and pulls the pipeline, avoiding the detachment of the flushing hose 11 and the drainage hose 10. When the detection ring 57 moves to press the pressure sensor 58, the pressure sensor 58 generates an electrical signal to trigger the controller 59 to control the buzzer 60 to alarm, so as to prevent the patient from further pulling the flushing hose 11 and the drainage hose 10, effectively preventing detachment.;

[0036] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0037] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. An anti-blocking drainage device, characterized in that: The invention comprises a case, a flushing mechanism, a negative pressure suction mechanism, a U-shaped tube, and a flushing pipe fitting and a drainage pipe fitting slidably arranged in the U-shaped tube, wherein the negative pressure suction mechanism and the flushing mechanism are arranged in the case, the U-shaped tube comprises an arc section and a flushing section and a drainage section connected at both ends of the arc section, the end of the flushing section is connected to a flushing hose, the end of the drainage section is connected to a drainage hose, the drainage hose is connected to the negative pressure suction mechanism, the flushing hose is connected to the flushing mechanism, the end of the U-shaped tube close to the flushing section is provided with external flushing holes distributed along a circumferential array, the end of the U-shaped tube close to the drainage section is provided with external drainage holes distributed along a circumferential array, the flushing pipe fittings are arranged along a circumferential array Internal flushing holes are distributed, and the drainage pipe is provided with internal drainage holes in a circumferential array. An air source is provided in the chassis. A flushing line moving drive component for driving the flushing pipe to slide is provided between the end of the flushing pipe and the flushing section. A drainage line moving drive component for driving the drainage pipe to slide is provided between the end of the drainage pipe and the drainage section. An annular groove one is provided on the inner wall of the flushing section along the circumferential direction, and the annular groove one and the external flushing holes are axially staggered, and a strip groove one is provided between the annular groove one and the arc section. An annular groove two is provided on the inner wall of the drainage section along the circumferential direction, and the annular groove two and the external drainage holes are axially staggered, and a strip groove two is provided between the annular groove two and the arc section.

2. The anti-blocking drainage device according to claim 1, characterized in that: The flushing section is provided with a flushing activity area, the drainage section is provided with a drainage activity area, an annular groove 1 and an external flushing hole are arranged in the flushing activity area, and the annular groove 1 and the external flushing hole are respectively provided with multiple groups along the axial array of the flushing activity area, and the annular groove 1 and the external flushing hole are distributed at intervals along the axial direction of the flushing activity area, the strip groove 1 is distributed in a circumferential array around the flushing section, and the strip groove 1 connects multiple annular grooves 1 distributed in an array, annular groove 2 and the external drainage hole are arranged in the drainage activity area, and the annular groove 2 and the external drainage hole are provided with multiple groups along the axial array of the drainage activity area, and the annular groove 2 and the external drainage hole are distributed at intervals along the axial direction of the drainage activity area, and the strip groove 2 is distributed in a circumferential array around the drainage section, and the strip groove 2 connects multiple annular grooves 2 distributed in an array.

3. The anti-blocking drainage device according to claim 2, characterized in that: The upper wall of the chassis is provided with an air source connector 1 and an air source connector 2, the side wall of the flushing hose is provided with a flushing air pipe, the side wall of the drainage hose is provided with a drainage air pipe, the flushing air pipe is connected between the air source connector 1 and the flushing line moving drive assembly, and the drainage air pipe is connected between the air source connector 2 and the drainage line moving drive assembly.

4. The anti-blocking drainage device according to claim 3, characterized in that: The flushing line moving drive assembly includes a flushing rectangular tube, a flushing piston, an air-driven piston and a flushing spring. The air-driven piston is coaxially fixed at one end of the flushing pipe away from the arc section. The air-driven piston is slidingly and sealingly connected to the inner wall of the flushing section. The flushing rectangular tube is fixedly passed through the end of the flushing section away from the arc section. The flushing rectangular tube is coaxially arranged in the flushing section. The flushing rectangular tube is connected to the flushing hose. A flushing rectangular hole matching the flushing rectangular tube is provided on the air-driven piston. The flushing rectangular tube slides through the flushing rectangular hole and is arranged in the flushing pipe. The flushing piston is coaxially sleeved in the flushing rectangular tube. On the outside of the tube, the flushing piston is slidably and sealedly connected to the inner wall of the flushing pipe, the inner flushing hole is arranged on the side of the flushing piston close to the arc section, the air-driven piston 1 is arranged on the side of the flushing activity area away from the arc section, the inner wall of the flushing section is coaxially provided with a limit ring 1, the limit ring 1 is arranged between the air-driven piston 1 and the flushing activity area, the flushing spring is arranged between the air-driven piston 1 and the inner wall of one end of the flushing section away from the arc section, the flushing spring makes the air-driven piston 1 maintain a tendency to fit with the limit ring 1, a first air hole is arranged on the circumferential side wall of one end of the flushing section away from the arc section, and the flushing air pipe is connected to the first air hole.

5. The anti-blocking drainage device according to claim 4, characterized in that: The drainage line moving drive assembly includes a drainage rectangular tube, a drainage piston, a second air-driven piston and a drainage spring. The second air-driven piston is coaxially fixed at one end of the drainage pipe away from the arc section. The second air-driven piston is slidingly and sealingly connected to the inner wall of the drainage section. The drainage rectangular tube is fixedly passed through the end of the drainage section away from the arc section. The drainage rectangular tube is coaxially arranged in the drainage section. The drainage rectangular tube is connected to the drainage hose. A drainage rectangular hole matching the drainage rectangular tube is provided on the second air-driven piston. The drainage rectangular tube slides through the drainage rectangular hole and is arranged in the drainage pipe. The drainage piston is coaxially sleeved on the drainage rectangular hole. On the outside of the tube, the drainage piston is slidably and sealedly connected to the inner wall of the drainage pipe, the inner drainage hole is arranged on the side of the drainage piston close to the arc section, the air-driven piston 2 is arranged on the side of the drainage activity area away from the arc section, the inner wall of the drainage section is coaxially provided with a limiting ring 2, the limiting ring 2 is arranged between the air-driven piston 2 and the drainage activity area, the drainage spring is arranged between the air-driven piston 2 and the inner wall of one end of the drainage section away from the arc section, the drainage spring makes the air-driven piston 2 maintain a tendency to fit with the limiting ring 2, a second air hole is arranged on the circumferential side wall of the drainage section away from the end of the arc section, and the drainage air pipe is connected to the second air hole.

6. The anti-blocking drainage device according to claim 5, characterized in that: A clamping anti-slip device is installed in the middle of the flushing hose and the drainage hose, and the clamping anti-slip device includes an anti-slip fixed shell, a clamping piece, a reel, a detection ring, a pressure sensor, a controller and a buzzer. The clamping piece is arranged on the side wall of the anti-slip fixed shell, one end of the anti-slip fixed shell is penetrated by a fixing hole, and the other end of the anti-slip fixed shell is penetrated by a sliding hole. The middle parts of the flushing hose and the drainage hose pass through the anti-slip fixed shell, the flushing hose and the drainage hose pass through the fixing hole and are fixedly connected to the fixing hole, the flushing hose and the drainage hose slide through the sliding hole, the reel is symmetrically rotated and arranged in the anti-slip fixed shell, the flushing hose and the drainage hose are respectively wound on two reels, a coil spring is arranged between the reel and the anti-slip fixed shell, the pressure sensor is symmetrically arranged on the inner wall of the anti-slip fixed shell close to the sliding hole, the detection rings are respectively arranged on the flushing hose and the drainage hose, and the controller is electrically connected to the pressure sensor and the buzzer respectively.

7. The anti-blocking drainage device according to claim 6, characterized in that: The inner wall of the flushing section is provided with a sealing ring 1, and the sealing ring 1 is arranged at the upper end and the lower end of the annular groove 1. The inner wall of the flushing section is provided with a sealing ring 1, and the sealing ring 1 is coaxially arranged with the external flushing hole, and the sealing ring 1 corresponds to the external flushing hole one by one. The inner wall of the drainage section is provided with a sealing ring 2, and the sealing ring 2 is arranged at the upper end and the lower end of the annular groove 2. The inner wall of the drainage section is provided with a sealing ring 2, and the sealing ring 2 is coaxially arranged with the external drainage hole, and the sealing ring 2 corresponds to the external flushing hole one by one.

8. The anti-blocking drainage device according to claim 7, characterized in that: The flushing mechanism includes a flushing pump, a flushing bottle and a liquid delivery hose. The side wall of the chassis is provided with a flushing slot, the flushing bottle is clamped in the flushing slot, the flushing pump is arranged in the chassis, the upper wall of the chassis is provided with a flushing input interface and a flushing output interface respectively connected to the input end and output end of the flushing pump, the liquid delivery hose is connected between the flushing bottle and the flushing input interface, and the flushing hose is connected to the flushing output interface.

9. The anti-blocking drainage device according to claim 8, characterized in that: The negative pressure suction mechanism includes a negative pressure pump, a drainage bottle and a negative pressure hose. The side wall of the chassis is provided with a drainage slot. The negative pressure pump is arranged in the chassis. The drainage bottle is arranged in the drainage slot. The upper wall of the chassis is provided with a negative pressure interface connected to the negative pressure pump. The negative pressure hose is connected between the negative pressure interface and the drainage bottle, and the drainage hose is connected to the drainage bottle.

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