Anti-blocking drainage device with buffer structure

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an anti-blocking drainage device with a buffer structure, which comprises a hydrops tank, and a drainage port is arranged on the hydrops tank; the pressure relief part comprises a pressure relief pipe, and a sealing plate is arranged below the pressure relief pipe; the buffer part comprises a drainage tube, a storage box is arranged on the liquid accumulation tank, and an alarm is arranged on the storage box; the driving part comprises a hard tube, an auxiliary tube and a sliding frame are arranged in the hard tube and the drainage tube, and guide wires are arranged at the two ends of the sliding frame; and the switching part comprises a pipe plug a, the lower end of the auxiliary pipe is connected with a water bag, drainage ports are formed in the positions, above the water bag, of the sliding frame and in the lower end of the auxiliary pipe, and a water outlet is formed in the lower end of the auxiliary pipe. The drainage device can automatically relieve pressure when the negative pressure intensity in the hydrops tank is too large, can buffer when a patient pulls the drainage tube, gives an alarm, can apply medicine to a wound of the patient, and can flush and clear blockage when the drainage tube is blocked.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical appliances, and particularly relates to a anti-blocking drainage device with a buffer structure. BACKGROUND

[0002] After urological surgery (such as prostatectomy, partial nephrectomy, bladder surgery, etc.), effective wound drainage is a key link to prevent postoperative complications. Postoperative drainage not only can remove blood, exudate and urine, but also can reduce the formation of ineffective cavities, reduce the risk of infection and promote wound healing. However, there are still some defects in the clinical application of the existing drainage technology and device.

[0003] Firstly, the postoperative drainage fluid in urology is usually rich in blood clots, fibrin, tissue debris and high-concentration urine crystals, which are easy to deposit on the inner wall of the drainage tube to form blockage. Once blocked, not only the drainage fails, but also the accumulation of fluid in the body increases the risk of infection, and the main function of the drainage device used in clinic is limited to passive drainage, lacking active anti-blocking design. When flushing or drug administration is needed, the drainage system usually needs to be disconnected, and a separate syringe is used for operation.

[0004] Secondly, the traditional drainage system uses a fixed negative pressure source, and the negative pressure value is usually not adjustable. When the viscosity of the drainage fluid changes or the drainage tube is partially blocked, the negative pressure in the system may abnormally increase, and excessive negative pressure may attract surrounding tissues (such as intestinal tube and omentum), causing tissue damage or pain. SUMMARY

[0005] The purpose of the present application is to provide an anti-blocking drainage device with a buffer structure, which can automatically release pressure when the negative pressure intensity in the fluid collection tank is too high, can buffer when the patient pulls the drainage tube, can issue an alarm, can apply medicine to the patient's wound, and can flush and unblock when the drainage tube is blocked.

[0006] The technical solutions adopted by the present application are as follows: An anti-blocking drainage device with a buffer structure comprises: a fluid collection tank, the upper end of the fluid collection tank is provided with a drainage port; a pressure relief part, the pressure relief part comprises a pressure relief pipe, and a sealing plate is arranged below the pressure relief pipe; a buffer part, the buffer part comprises a drainage tube, the drainage tube is in communication with the drainage port, a storage box is arranged outside the drainage tube at the upper end of the fluid collection tank, and an alarm is arranged at the left end of the storage box; a driving part, the driving part comprises a hard tube, the hard tube is in communication with the drainage tube, a secondary tube is arranged in the inner cavities of the hard tube and the drainage tube, a sliding carriage is arranged in the secondary tube, guide wires are arranged at both ends of the sliding carriage, and the guide wires are arranged in the drainage tube; The switching part includes a pipe plug a, which is arranged at the left side of the sliding frame, the lower end of the auxiliary pipe is connected with the water bag, the lower end of the sliding frame is above the water bag, and the positions above the water bag and away from the pipe plug a are all provided with drainage outlets, and the lower end of the auxiliary pipe is provided with a water outlet; The switching part is divided into three modes by the control of the driving part: the first mode: the guide wire drives the sliding frame to move right, at this time, the sliding frame blocks the water bag inlet and the water outlet, and only the auxiliary pipe outlet is opened; The second mode: the sliding frame moves to the middle part, at this time, the pipe plug a blocks the auxiliary pipe outlet, one group of drainage outlets are communicated with the water bag inlet, and the water outlet is still blocked. The third mode: the sliding frame moves to the left side, at this time, the auxiliary pipe and the water bag are blocked, and the other group of drainage outlets are communicated with the water outlet.

[0007] In a preferred scheme, the outer ring of the effusion tank is sleeved with a net bag, the rear upper end of the net bag is fixedly connected with a hook, the upper right side and the left side of the lower end of the effusion tank are respectively provided with a negative pressure port and a drainage port, and the lower right side of the effusion tank is provided with a drainage port.

[0008] In a preferred scheme, the pressure relief pipe is communicated at the upper middle part of the effusion tank, and the inner cavity of the pressure relief pipe is fixedly connected with a cross at the middle part, the pressure relief part further includes a lifting rod, the lifting rod is slidingly connected at the middle part of the cross, the upper end of the cross is fixedly connected with a spring a, the upper end of the spring a is fixedly connected with the upper end of the lifting rod, the lower end of the lifting rod penetrates through the cross and extends into the effusion tank, and the part of the lower end of the lifting rod in the inner cavity of the effusion tank is fixedly connected with a sealing plate, the upper end of the sealing plate is in contact with the lower end of the pressure relief pipe, and the upper end of the pressure relief pipe is fixedly connected with a filter screen.

[0009] In a preferred scheme, the drainage pipe is communicated at the upper end of the drainage port, and the upper end of the effusion tank is fixedly connected with a storage box, the lower end of the drainage pipe is arranged in the inner cavity of the storage box, and the lower left end of the storage box is fixedly installed with an alarm.

[0010] In a preferred scheme, the buffer part further includes a pull rope, the pull rope is fixedly connected with the lower end of the outer edge of the drainage pipe in the inner cavity of the storage box, the lower end of the pull rope is fixedly connected with a touch plate, the left lower end of the inner cavity of the storage box is fixedly connected with a C-shaped frame, the touch plate and the pull rope are movably sleeved in the C-shaped frame, and the inner cavity of the C-shaped frame is fixedly connected with a switch at the upper end, and the switch is arranged above the touch plate.

[0011] In a preferred scheme, two groups of grooves are arranged at the upper end of the storage box, the buffer part further includes two groups of friction plates, the two groups of friction plates are respectively rotatably connected in the two groups of grooves at the upper end of the storage box, the outer rings of the rotating shafts of the two groups of friction plates are fixedly connected with torsional springs, and one end of the torsional spring is fixedly connected with the inner cavity of the storage box.

[0012] In a preferred scheme, the hard tube is communicated in the inlet of the upper end of the drainage tube, and the inner cavities of the drainage tube and the hard tube are fixedly connected with the auxiliary tubes, the auxiliary tubes of the two groups are communicated with each other, and the left end is provided with a circular outlet, the inner cavity of the auxiliary tube connected with the inner cavity of the hard tube is slidingly connected with a sliding frame, the left and right sides of the sliding frame are communicated, the left and right ends of the sliding frame are fixedly connected with guide wires, and the outer circles of the middle sections of the two groups of guide wires are slidingly connected in the inner cavities of the hard tube and the drainage tube.

[0013] In a preferred scheme, the driving part further comprises a rotating handle, the rotating handle is rotationally connected to the right lower end of the drainage tube outside the storage box, and the lower ends of the two groups of guide wires are fixedly connected in the inner cavity of the rotating handle through the drainage tube.

[0014] In a preferred scheme, the switching part further comprises a sealing ring, the sealing ring is fixedly connected to the outlet position of the auxiliary tube, the left end of the sliding frame is fixedly connected with a sleeve, the inner cavity of the sleeve is slidingly connected with a tube plug a, the left end of the tube plug a is out of the sleeve and is in contact with the inner circle of the sealing ring, and the end of the tube plug a in the inner cavity of the sleeve is fixedly connected with a spring b, and the right end of the spring b is fixedly connected to the middle part of the inner cavity of the sleeve.

[0015] In a preferred scheme, the outer circle of the auxiliary tube in the inner cavity of the hard tube is fixedly connected with a water bag, the upper end inlet of the water bag is inserted into the inner cavity of the auxiliary tube, and the lower end of the sliding frame is arranged above the inlet of the water bag, and the inner cavity of the sliding frame is provided with two groups of water discharge outlets, one group of the water discharge outlets is arranged above the inlet of the water bag, the inner circle of the middle part of the water discharge outlet is fixedly connected with an elastic rope, the lower end of the elastic rope is fixedly connected with a tube plug b in the inner cavity of the water bag, the area of the auxiliary tube on the right side of the water bag is provided with a water outlet, and the other group of the water discharge outlets is arranged above the water outlet.

[0016] The technical effects obtained by the application are as follows: The pressure relief part can automatically relieve pressure when the negative pressure intensity in the effusion tank is too large, so as to avoid harm to the patient caused by the excessive negative pressure; under the conventional state, the sealing plate is attached to the lower side of the pressure relief pipe by the pushing part of the pressure relief part, so as to seal the effusion tank, and when the negative pressure intensity is too large, the atmospheric pressure outside can resist the pushing force of the pushing part of the pressure relief part, so as to push the sealing plate downward, so that the effusion tank is communicated with the outside air, the pressure is relieved, and harm to the patient caused by the excessive negative suction is avoided. The buffer part can buffer when the patient pulls the drainage tube, and timely alarm is sent, so as to avoid harm to the patient caused by the patient or nearby personnel pulling the drainage tube; when the drainage tube is pulled, the redundant part of the drainage tube stored in the storage box is stretched out, at the same time, the friction part on the storage box applies a friction force when the redundant part is pulled out, and when the drainage tube is pulled to a certain extent, the trigger part of the alarm is triggered, so that the alarm operates to send an alarm, so as to avoid the drainage tube from being continuously pulled, and harm to the patient is avoided. The drive unit and switching unit of this invention can apply medication to the patient's wound and flush and clear blockages in the drainage tube, avoiding harm to the patient due to drainage tube blockage. In normal state, the slide is driven to the right by the guide wire, keeping the switching unit in the first state. At this time, the outlet of the secondary tube is open, and medication can be applied to the patient's wound through the secondary tube. Once the drainage tube is blocked, the guide wire will drive the slide to the middle. At this time, the secondary tube is blocked, the inlet of the water bag is opened, the water bag receives the liquid in the secondary tube and expands until it blocks the end of the drainage tube. Then, the slide is driven to the left to close the inlet of the water bag and open the outlet, allowing the liquid in the secondary tube to flow into the drainage tube through the outlet to flush the blockage in the drainage tube. This integrates medication application and flushing, saving space and facilitating operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a rear view schematic diagram of the entire invention; Figure 3 This is a schematic cross-sectional view of the entire invention. Figure 4 In this invention Figure 3 Enlarged view of point A; Figure 5 In this invention Figure 3 Enlarged view of point B; Figure 6 This is a cross-sectional schematic diagram of the buffer section in this invention; Figure 7 This is a schematic diagram showing the position of the friction plate in this invention; Figure 8 This is a schematic diagram showing the position of the driving unit in this invention; Figure 9 This is a cross-sectional schematic diagram of the drive unit in this invention; Figure 10 This is a cross-sectional schematic diagram of the rigid tube in this invention; Figure 11 This is a cross-sectional schematic diagram of the carriage in this invention; Figure 12 This is a diagram showing the state effect of plug a in the first state of this invention; Figure 13 This is a diagram illustrating the state of the water bladder in the second state of this invention. Figure 14 This is a diagram showing the state of the water outlet in the third state of this invention.

[0018] The attached diagram lists the components represented by each number as follows: 10. Liquid collection tank; 11. Mesh bag; 12. Hook; 13. Negative pressure port; 14. Drainage port; 15. Drain outlet; 20. Pressure relief section; 21. Pressure relief pipe; 22. Lifting rod; 23. Spring a; 24. Sealing plate; 25. Filter screen; 30. Buffer section; 31. Drainage tube; 32. Storage box; 33. Alarm; 34. Pull cord; 35. Pressure plate; 36. Switch; 37. Friction plate; 38. Torsion spring; 40. Drive unit; 41. Rigid tube; 42. Sub-tube; 43. Carriage; 44. Guide wire; 45. Throttle; 50. Switching unit; 51. Sealing ring; 52. Sleeve; 53. Pipe plug a; 54. Spring b; 55. Water bladder; 56. Drain outlet; 57. Elastic rope; 58. Pipe plug b; 59. Water outlet. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0023] Please see the appendix Figures 1 to 5 , Figures 9 to 11 As shown, this embodiment provides an anti-clogging drainage device with a buffer structure, including: A liquid collection tank 10 is provided with a drain port 14 at its upper end; The pressure relief section 20 includes a pressure relief pipe 21, which is located at the upper end of the liquid collection tank 10, and a sealing plate 24 is located below the pressure relief pipe 21. The buffer section 30 includes a drainage pipe 31, which is connected to the drainage port 14. A storage box 32 is provided on the upper end of the liquid collection tank 10 outside the drainage pipe 31, and an alarm 33 is provided on the left end of the storage box 32. The drive unit 40 includes a rigid tube 41, which is connected to the drainage tube 31. Both the rigid tube 41 and the drainage tube 31 are provided with a secondary tube 42. A slide 43 is provided inside the secondary tube 42. Guide wires 44 are provided at both ends of the slide 43. The guide wires 44 are located in the inner cavity of the drainage tube 31. The switching part 50 includes a pipe plug a53, which is located on the left side of the slide 43. The lower end of the secondary pipe 42 is connected to a water bladder 55. The lower end of the slide 43 is above the water bladder 55, and a drain outlet 56 is provided at a position above the water bladder 55 and away from the pipe plug a53. The lower end of the secondary pipe 42 is also provided with a water outlet 59. The switching unit 50 is divided into three modes under the control of the drive unit 40: First mode: the guide wire 44 drives the slide 43 to move to the right. At this time, the slide 43 blocks the inlet and outlet 59 of the water bag 55, and only the outlet of the secondary pipe 42 is open. Second state: The carriage 43 moves to the middle, at which time the pipe plug a53 blocks the outlet of the secondary pipe 42, and one set of drain outlets 56 is connected to the inlet of the water bag 55, while the outlet 59 is still blocked. Third configuration: The slide 43 moves to the left side, at which point the secondary pipe 42 and the water bladder 55 are blocked, and another set of drain outlets 56 are connected to the outlet 59.

[0024] It should be noted that the alarm 33 should have built-in components such as a battery, WIFI, IoT and speaker, so as to issue alarms in a timely manner and notify medical staff, and the battery should be able to be connected to the mains power for energy storage; To ensure the proper functioning of the device, it should be used in conjunction with negative pressure equipment (such as wall-mounted negative pressure pumps or mechanical negative pressure pumps).

[0025] In this embodiment, under normal conditions, the switching unit 50 remains in the first state, facilitating medical staff to apply medication to the patient's wound area through the secondary tube 42. If the drainage tube 31 is blocked, the driving unit 40 drives the guide wire 44 to move, pulling the slide 43 to the left to the middle position of the slide 43's movement. At this time, the tube plug a53 blocks the outlet of the secondary tube 42, and at the same time, the drain outlet 56 on the left side connects to the inlet of the water bag 55, allowing the liquid in the secondary tube 42 to enter the water bag 55, causing the water bag 55 to inflate. The expansion seals the rigid tube 41, and then the coarse drive slide 43 moves to the left, blocking the inlet of the water bladder 55. The drain outlet 56 on the right side connects with the outlet 59, allowing the liquid in the secondary tube 42 to flow into the drainage tube 31 through the outlet 59 for flushing, preventing the drainage tube 31 from becoming continuously blocked and affecting its use. When the negative pressure in the collection tank 10 is too high, the external atmospheric pressure will resist the elastic force of the pressure relief part 20, driving the sealing plate 24 to descend, allowing the collection tank 10 to connect with the outside air and achieve pressure relief. When the patient or surrounding personnel pull on the drainage tube 31, the redundant part of the drainage tube 31 in the storage box 32 will be pulled out. At the same time, the buffer part 30 will apply a frictional force to the drainage tube 31 for cushioning. When the drainage tube 31 is pulled to a certain extent, the alarm 33 will be triggered and controlled to sound an alarm, thereby reminding the patient and medical staff that the drainage tube 31 has been pulled, preventing the patient from being injured.

[0026] Secondly, please refer to again Figures 1 to 3 The outer ring of the liquid collection tank 10 is fitted with a net bag 11, and a hook 12 is fixedly connected to the upper rear side of the net bag 11. The upper right side and the left side of the liquid collection tank 10 are respectively provided with a negative pressure port 13 and a drainage port 14, while the lower right side of the liquid collection tank 10 is provided with a drain port 15.

[0027] It should be noted that the net bag 11 is made of medical-grade PVC material, and the hook 12 is used to help the net bag 11 hang on the side of the patient's bed; To ensure the normal operation of the device, negative pressure port 13 should be connected to an external negative pressure device for negative pressure drainage operations. A sealing plug should be installed at the drain outlet 15 (not shown in the figure, and this is a common technical structure in the prior art, so it will not be described in detail here).

[0028] In this embodiment, the net bag 11 can be suspended at a suitable position beside the patient's bed using the hook 12, ensuring the effusion tank 10 is in a convenient and stable state. After the negative pressure port 13 is connected to the negative pressure device, the negative pressure device is turned on, creating a negative pressure environment inside the effusion tank 10. Fluid from the patient's body can enter the effusion tank 10 through the drainage tube 31 and drainage port 14. When drainage is required, the sealing plug at the drainage port 15 is opened to drain the fluid from the effusion tank 10. After drainage, the drainage port 15 is resealed.

[0029] Secondly, please refer to againFigure 3 , Figure 5 The pressure relief pipe 21 is connected to the middle of the upper end of the liquid collection tank 10, and a cross is fixedly connected to the middle of the inner cavity of the pressure relief pipe 21. The pressure relief part 20 also includes a lifting rod 22, which is slidably connected to the middle of the cross. A spring a23 is fixedly connected to the upper end of the cross. The upper end of the spring a23 is fixedly connected to the lower side of the upper end of the lifting rod 22. The lower end of the lifting rod 22 passes through the cross and extends into the liquid collection tank 10. A sealing plate 24 is fixedly connected to the part of the lower end of the lifting rod 22 that is placed in the inner cavity of the liquid collection tank 10. The upper end of the sealing plate 24 is in contact with the lower end of the pressure relief pipe 21. A filter screen 25 is fixedly connected to the upper end of the pressure relief pipe 21.

[0030] It should be noted that the elastic force of spring a23 should be greater than the negative pressure intensity of the inner cavity of the liquid collection tank 10. In this way, under normal conditions, the elastic force of spring a23 can be used to push the sealing plate 24 to always be in close contact with the upper end of the liquid collection tank 10, so as to avoid affecting the negative pressure environment of the liquid collection tank 10. Only when the negative pressure intensity is too high will atmospheric pressure be used to counteract the elastic force of spring a23, causing the sealing plate 24 to drop, allowing the liquid collection tank 10 to communicate with the outside air, and improving the situation of excessive negative pressure. Filter screen 25 is used to prevent external impurities from entering the liquid collection tank 10; A rubber sealing gasket is provided on the outer ring of the sealing plate 24 to improve airtightness.

[0031] In this embodiment, under normal conditions, spring a23 pushes the sealing plate 24 upward, causing it to adhere tightly to the lower end of the pressure relief pipe 21, ensuring a stable negative pressure environment within the effusion tank 10. When the negative pressure within the effusion tank 10 becomes excessive, exceeding the elastic force of spring a23, external atmospheric pressure pushes the sealing plate 24 downward, separating it from the lower end of the pressure relief pipe 21. At this time, outside air enters the effusion tank 10 through the pressure relief pipe 21, balancing the internal negative pressure and preventing harm to the patient due to excessive negative pressure. Once the negative pressure returns to a normal range, spring a23 pushes the sealing plate 24 upward again, resealing the pressure relief pipe 21 and maintaining the negative pressure state of the effusion tank 10.

[0032] Secondly, please refer to again Figures 3 to 4 , Figures 6 to 8 The drainage tube 31 is connected to the upper end of the drainage port 14, and the upper end of the liquid collection tank 10 is fixedly connected to the storage box 32. The lower outer ring of the drainage tube 31 is set in the inner cavity of the storage box 32, and the lower left side of the storage box 32 is fixedly installed with an alarm 33. The buffer section 30 also includes a pull rope 34, which is fixedly connected to the lower outer edge of the drainage tube 31 located in the inner cavity of the storage box 32. The lower end of the pull rope 34 is fixedly connected to a pressure plate 35. A C-shaped frame is fixedly connected to the lower left side of the inner cavity of the storage box 32. Both the pressure plate 35 and the pull rope 34 are movably sleeved in the C-shaped frame. A switch 36 is fixedly connected to the upper end of the inner cavity of the C-shaped frame. The switch 36 is located above the pressure plate 35. The storage box 32 has two sets of grooves at the upper outlet. The buffer part 30 also includes two sets of friction plates 37. The two sets of friction plates 37 are rotatably connected to the two sets of grooves at the upper end of the storage box 32 via rotating shafts. The outer ring of the rotating shafts of the two sets of friction plates 37 is fixedly connected to torsion springs 38. One end of the torsion spring 38 is fixedly connected to the inner cavity of the storage box 32.

[0033] It should be noted that the portion of the drainage tube 31 located within the storage box 32 is arranged in an S-shape. This is intended to ensure that if the patient pulls on the drainage tube 31, it will be pulled outward through the storage box 32, thus providing a certain buffer and preventing injury to the patient from pulling on the drainage tube 31. The switch 36 is a trigger component that controls the opening and closing of the alarm 33. It is designed that when the patient pulls the drainage tube 31, the pull rope 34 will be pulled simultaneously, causing the pressure plate 35 to press the switch 36, thereby triggering the alarm 33 to sound an alarm. The outer ring of the friction plate 37 is provided with an anti-slip layer, which is intended to provide some resistance when the drainage tube 31 is pulled outward, so as to remind the patient that the drainage tube 31 is being pulled. With the torsion spring 38, the friction plate 37 is in an upward rotating state under normal conditions, and a stop is provided at the upper end of the storage box 32 to limit the range of motion of the friction plate 37. This is intended to ensure that the drainage tube 31 will only encounter resistance when it is pulled outward, while when it is pushed into the storage box 32 for storage, the friction plate 37 can be pushed to rotate downward, thus avoiding greater resistance when it is inserted into the storage box 32.

[0034] In this embodiment, when the drainage tube 31 is pulled, the S-shaped portion of the drainage tube 31 located in the storage box 32 will be straightened. Simultaneously, pulling the pull rope 34 will cause the pressure plate 35 to move upwards, squeezing the switch 36 and triggering the alarm 33 to sound an alarm, alerting the patient and medical staff that the drainage tube 31 is being pulled. During this process, the anti-slip layer on the outer ring of the friction plate 37 will generate resistance against the drainage tube 31, slowing down the pulling speed and preventing injury to the patient.

[0035] Please refer to it again. Figure 8 middle Figure 9The rigid tube 41 is connected to the inlet at the upper end of the drainage tube 31, and the upper ends of the inner cavities of both the drainage tube 31 and the rigid tube 41 are fixedly connected to the secondary tubes 42. The two sets of secondary tubes 42 are interconnected and have a circular outlet at the left end. The inner cavity of the secondary tube 42 connected to the inner cavity of the rigid tube 41 is slidably connected to the slide 43. The left and right sides of the slide 43 are connected. The left and right ends of the slide 43 are fixedly connected to the guide wires 44, and the outer rings of the middle sections of the two sets of guide wires 44 are slidably connected to the inner cavities of the rigid tube 41 and the drainage tube 31. The drive unit 40 also includes a throttle 45, which is rotatably connected to the lower right side of the drainage tube 31 located outside the storage box 32 via a damping bearing, and the lower ends of the two sets of guide wires 44 are fixedly connected to the inner cavity of the throttle 45 through the drainage tube 31.

[0036] It should be noted that the rigid tube 41 is made of transparent medical-grade hard plastic and has the same diameter as the drainage tube 31, making it easy to observe the state of the switching part 50. The secondary tube 42 located in the inner lumen of the rigid tube 41 is also made of medical-grade hard plastic, while the secondary tube 42 located in the inner lumen of the drainage tube 31 is made of medical-grade soft plastic. The drainage tube 31 and the secondary tube 42 are combined to form a double-lumen drainage catheter, which facilitates medication administration and flushing. The throttle 45 has a built-in take-up reel, and the lower ends of the two sets of guide wires 44 are fixedly connected to the inner cavity of the take-up reel through the drainage tube 31. The two sets of guide wires 44 are wound in opposite directions. The guide wire 44 on the left side of the connecting slide 43 is wound clockwise in the take-up reel, while the guide wire 44 on the right side of the connecting slide 43 is wound counterclockwise in the take-up reel. The purpose is that when the throttle 45 is rotated clockwise, the guide wire 44 on the left side of the connecting slide 43 will be retracted and the guide wire 44 on the right side will be released, causing the slide 43 to move to the left. When rotated counterclockwise, the guide wire 44 on the right side will be retracted and the guide wire 44 on the left side of the slide 43 will be released, causing the slide 43 to move to the right. The bearing connected to the throttle 45 is a damping bearing, and the length of the slide 43 moved by the throttle 45 in one revolution controls the drive switching unit 50 to perform one state switch. At the same time, a pointer should be provided on the throttle 45 to facilitate the operator to observe whether the throttle 45 has completed the switching operation. The drainage tube 31 is connected to a set of tubing at the lower end of the secondary tube 42, and should be in a sealed state under normal conditions, so that when the switching part 50 is in the first state, the medication can be released to the patient's wound site through the secondary tube 42; Preferably, to ensure the normal use of the device, a miniature one-way valve (such as an umbrella-shaped diaphragm type or a silicone closed tube type miniature one-way valve, not shown in the figure, and this is a common technical structure in the prior art, so it will not be described in detail here) should be built into the outlet of the secondary tube 42. This valve can only allow liquid to be delivered to the patient's wound through the secondary tube 42, while the fluid accumulated at the patient's wound site cannot enter the secondary tube 42. This is to prevent the fluid in the patient's wound area from entering the secondary tube 42 and to prevent the secondary tube 42 from affecting the negative pressure drainage operation.

[0037] In this embodiment, when the switching unit 50 is in the first state, medication can be applied to the patient's wound area through the secondary tube 42. When it is necessary to flush the drainage tube 31, the handle 45 can be rotated in both directions to drive the two sets of guide wires 44 to retract or extend, thereby driving the carriage 43 to move left and right, and controlling the state adjustment of the switching unit 50.

[0038] Please refer to it again. Figures 9 to 14 The switching unit 50 also includes a sealing ring 51, which is fixedly connected to the outlet position of the secondary pipe 42. The left end of the slide 43 is fixedly connected to a sleeve 52, and a pipe plug a53 is slidably connected to the inner cavity of the sleeve 52. The left end of the pipe plug a53 extends out of the sleeve 52 and contacts the inner ring of the sealing ring 51. A spring b54 is fixedly connected to one end of the pipe plug a53 located in the inner cavity of the sleeve 52, and the right end of the spring b54 is fixedly connected to the middle of the inner cavity of the sleeve 52. A water bladder 55 is fixedly connected to the outer ring of the secondary pipe 42 located inside the rigid pipe 41. The upper inlet of the water bladder 55 extends into the inner cavity of the secondary pipe 42, and the lower end of the slide 43 is positioned above the inlet of the water bladder 55. Two sets of drain outlets 56 are provided at the lower end of the inner cavity of the slide 43. One set of drain outlets 56 is positioned above the inlet of the water bladder 55, and an elastic rope 57 is fixedly connected to the middle of the inner ring of the drain outlet 56. The lower end of the elastic rope 57 extends into the inner cavity of the water bladder 55 and is fixedly connected to a pipe plug b58. A water outlet 59 is provided in the area to the right of the water bladder 55 on the secondary pipe 42, and the other set of drain outlets 56 is positioned above the water outlet 59.

[0039] It should be noted that the sealing ring 51 has a concave arc groove, while the tube plug a53 has a matching convex ring, which is intended to improve the sealing performance of the tube plug a53 after contacting the sealing ring 51. The upper end of the tube plug b58 is also provided with a conical protrusion ring, and the upper end of the inner cavity of the water bladder 55 is also provided with a matching groove, which is intended to improve the sealing performance between the tube plug b58 and the water bladder 55 and prevent the water bladder 55 from leaking and affecting the sealing of the drainage tube 31. The slide 43 has grooves on both the left and right sides above the water bladder 55. In the first and third states, the elastic rope 57 is placed in the grooves. Only in the second state will the elastic rope 57 be removed from the groove. Rubber sealing gaskets are installed at the lower end of the slide 43 in the area near the water outlet 59. Under normal conditions, the sealing gaskets will block the water outlet 59 to avoid affecting the application of medicine to the patient's wound. The water bladder 55 is made of medical-grade high-elasticity material (such as medical-grade silicone or polyurethane, the same material as the balloon), and the water bladder 55 is large enough to completely seal the inner cavity of the rigid tube 41 after being filled with water, which facilitates flushing of the inside of the drainage tube 31 in the third state. The distance between the two sets of drain outlets 56 is greater than the distance between the inlet and outlet 59 of the water bladder 55. Even in the second and third states, only one set of drain outlets 56 can be connected to the inlet or outlet 59 of the water bladder 55. The second and third states cannot coexist. When the pipe plug a53 contacts the sealing ring 51, the left drain port 56 is connected to the inlet of the water bag 55, and when the pipe plug a53 is fully retracted into the sleeve 52, the outlet 59 is connected to the right drain port 56, which is intended to facilitate the control of the switching state of the switching part 50. Here, the three states of the switching unit 50 are described in further detail: In the first state (medication state), the slide 43 moves to the right, so that the tube plug a53 is completely separated from the sealing ring 51. At this time, the inlet and outlet 59 of the water bag 55 are completely blocked below the slide 43, and the tube plug a53 moves to the wider area of ​​the inner cavity of the secondary tube 42, so that the medicine can flow into the patient's wound area through the outlet of the secondary tube 42 for medication. In the second state (blocking state), the slide 43 moves to the left, causing the pipe plug a53 to fit against the sealing ring 51. At this time, the outlet of the secondary pipe 42 is blocked, while the drain outlet 56 on the left side is connected to the inlet of the water bladder 55. The outlet 59 is still blocked by the lower end of the slide 43. At this time, the liquid entering the secondary pipe 42 will flow into the water bladder 55, causing the water bladder 55 to expand and block the inner wall of the rigid pipe 41. In the third state (flushing state), the slide 43 moves to the left again, so that the tube plug a53 is fully retracted into the sleeve 52. At this time, the slide 43 will pull the elastic rope 57 upward, so that the tube plug b58 seals the water bag 55 to prevent the water bag 55 from leaking and affecting the use. Then the drain outlet 56 on the right side is connected to the outlet 59. The liquid in the secondary pipe 42 will enter the rigid pipe 41 through the outlet 59. Due to the negative pressure and the sealing of the water bag 55, the liquid will enter the liquid collection tank 10 along the drainage pipe 31 to achieve flushing. In the case of blockage of the drainage pipe 31, the blockage can also be cleared by the continuously increasing water pressure.

[0040] Preferably, during the process of switching from the second state to the third state, liquid should always be supplied in the secondary pipe 42 to avoid the liquid in the water bladder 55 being squeezed out during the switching process, which would affect its use.

[0041] In this embodiment, under normal conditions, the control handle 45 is rotated counterclockwise to retract the guide wire 44 on the right side, thereby driving the slide 43 to move to the right and enter the first state. At this time, the outlet of the secondary tube 42 is opened, while the inlet and outlet 59 of the water bag 55 are blocked. Medical staff can apply medicine to the patient's wound through the secondary tube 42. When flushing the drainage tube 31 is required, rotate the handle 45 clockwise to retract the left guide wire 44, causing the slide 43 to move to the left to the second state. At this time, the tube plug a53 blocks the sealing ring 51, blocking the outlet of the secondary tube 42. Simultaneously, the inlet of the water bladder 55 connects with the left drain outlet 56, allowing liquid to flow into the water bladder 55, causing it to expand and seal the inner cavity of the rigid tube 41. Then, the slide 43 continues to move to the left to the third state. During this process, the elastic rope 57 is pulled up, and the tube plug b58 seals the water bladder 55. At the same time, the right drain outlet 56 connects with the outlet 59, allowing the liquid in the secondary tube 42 to flow into the rigid tube 41 through the outlet 59, and then into the drainage tube 31 for flushing. After flushing, switch back to the second state and remove all the water from the secondary tube 42 and the water bladder 55, allowing the water bladder 55 to reset and restoring the flow in the rigid tube 41. Then switch back to the first state to maintain the seal and wait for medication to be applied.

[0042] The working principle of this invention is as follows: During use, the rigid tube 41 is brought close to the patient's wound for drainage. In the normal state, the control handle 45 is rotated counterclockwise to retract the guide wire 44 on the right, causing the slide 43 to move to the right, entering the first state. At this time, the outlet of the secondary tube 42 is opened, allowing medical personnel to apply medication to the patient's wound through the secondary tube 42. When flushing the drainage tube 31 is required, the control handle 45 is rotated clockwise to retract the guide wire 44 on the left, causing the slide 43 to move to the left, entering the second state. At this time, the outlet of the secondary tube 42 is blocked, and simultaneously, the inlet of the water bladder 55 connects to the left drain outlet 56. Liquid flows into the water bladder 55, causing it to expand and block the rigid tube 41. Subsequently, the slide 43 continues to move to the left, entering the third state. At this time, the inlet of the water bladder 55 is blocked, and simultaneously, the right drain outlet 56 connects to the outlet 59. Liquid in the secondary tube 42 flows into the drainage tube 31 through the outlet 59 for flushing. If the drainage tube 31 is pulled, the S-shaped portion of the drainage tube 31 located in the storage box 32 will be straightened. Simultaneously, the pull rope 34 will be pulled, causing the pressure plate 35 to move upwards, squeezing the switch 36 and triggering the alarm 33 to sound an alarm, alerting the patient and medical staff that the drainage tube 31 has been pulled. Under normal conditions, spring a23 pushes the sealing plate 24 to press tightly against the pressure relief pipe 21, ensuring a negative pressure environment within the effusion tank 10. When the negative pressure within the effusion tank 10 becomes too high, the external atmospheric pressure will push the sealing plate 24 downwards, allowing outside air to enter the effusion tank 10 through the pressure relief pipe 21, balancing the internal negative pressure and preventing harm to the patient due to excessive negative pressure.

[0043] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A clog-resistant drainage device with a buffer structure, characterized by: The utility model relates to a negative pressure drainage device for breast cancer patients, including: Accumulation tank, the upper end of accumulation tank is provided with drainage port; Pressure relief part, pressure relief part includes pressure relief pipe, the lower part of pressure relief pipe is provided with sealing plate; Buffer part, buffer part includes drainage pipe, drainage pipe communicates with drainage port, the upper end of accumulation tank is provided with storage box outside drainage pipe, the left end of storage box is provided with alarm; Driving part, driving part includes hard pipe, hard pipe communicates with drainage pipe, the inner chamber of hard pipe and drainage pipe is provided with auxiliary pipe, the inner chamber of auxiliary pipe is provided with sliding frame, both ends of sliding frame are provided with guide wire, guide wire is arranged in drainage pipe; Switching part, switching part includes pipe plug a, pipe plug a is arranged in the left side of sliding frame, the lower end of auxiliary pipe is connected with water bag, the lower end of sliding frame is above water bag, and the upper end of water bag and the position away from pipe plug a are both provided with drainage port, the lower end of auxiliary pipe is provided with water outlet; Wherein, switching part is divided into three kinds of shapes through the control of driving part: first shape: guide wire drives sliding frame to move right, at this moment, sliding frame blocks water bag entrance and water outlet, only auxiliary pipe outlet is opened; Second shape: sliding frame moves to the middle part, at this moment, pipe plug a blocks auxiliary pipe outlet, one group of drainage ports communicate with water bag entrance, and water outlet is still blocked; Third shape: sliding frame moves to the left side, at this moment, auxiliary pipe and water bag are blocked, and the other group of drainage ports communicate with water outlet.

2. The anti-clog drainage device with buffer structure of claim 1, wherein: The outer ring of accumulation tank is sleeved with net bag, the rear upper end of net bag is fixedly connected with hook, the upper end right side and the left side of accumulation tank are provided with negative pressure port and drainage port respectively, and the lower end right side of accumulation tank is provided with drainage port.

3. The anti-clog drainage device with buffer structure of claim 1, wherein: Pressure relief pipe is communicated in the upper end middle part of accumulation tank, and the inner chamber middle part of pressure relief pipe is fixedly connected with cross, pressure relief part further includes lifting rod, lifting rod is slidingly connected in the middle part of cross, the upper end of cross is fixedly connected with spring a, the upper end of spring a is fixedly connected in the lower side of the upper end of lifting rod, the lower end of lifting rod penetrates cross and extends into accumulation tank, and the part of lifting rod lower end in the inner chamber of accumulation tank is fixedly connected with sealing plate, the upper end of sealing plate is in contact with the lower end of pressure relief pipe, and the upper end of pressure relief pipe is fixedly connected with filter screen.

4. The anti-clog drainage device with buffer structure of claim 1, wherein: Drainage pipe is communicated in the upper end of drainage port, and the upper end of accumulation tank is fixedly connected with storage box, the lower end of drainage pipe is arranged in the inner chamber of storage box, and the left lower end of storage box is fixedly installed with alarm.

5. The anti-clog drainage device with buffer structure of claim 4, wherein: Buffer part further includes pull rope, pull rope is fixedly connected with the lower end outer edge of drainage pipe in the inner chamber of storage box, the lower end of pull rope is fixedly connected with touch plate, the left lower end of the inner chamber of storage box is fixedly connected with C-shaped frame, touch plate and pull rope are movably sleeved in C-shaped frame, and the inner chamber upper end of C-shaped frame is fixedly connected with switch, and the switch is arranged above touch plate.

6. The anti-clog drainage device with buffer structure of claim 1, wherein: The upper end outlet of storage box is provided with two groups of grooves, and the buffer part further includes two groups of friction plates, the two groups of friction plates are rotatably connected in the two groups of grooves on the upper end of storage box, and the outer ring of the rotation shaft of the two groups of friction plates is fixedly connected with torsional spring, and one end of torsional spring is fixedly connected in the inner chamber of storage box.

7. The anti-clog drainage device with buffer structure of claim 1, wherein: The hard tube is communicated in the inlet of the upper end of the drainage tube, and the inner cavities of the drainage tube and the hard tube are fixedly connected with the auxiliary pipes, the two groups of auxiliary pipes are communicated with each other, and the left end is provided with a circular outlet, the inner cavity of the auxiliary pipe connected with the inner cavity of the hard tube is slidably connected with a sliding frame, the left and right sides of the sliding frame are communicated with each other, the left and right ends of the sliding frame are fixedly connected with guide wires, and the outer circles of the middle sections of the two groups of guide wires are slidably connected in the inner cavities of the hard tube and the drainage tube.

8. The anti-clog drainage device with buffer structure of claim 7, wherein: The driving part further comprises a rotating handle, the rotating handle is rotatably connected to the lower right end of the drainage tube outside the storage box, and the lower ends of the two groups of guide wires are fixedly connected in the inner cavity of the rotating handle.

9. The anti-clog drainage device with cushioning structure of claim 1, wherein: The switching part further comprises a sealing ring, the sealing ring is fixedly connected to the outlet of the auxiliary pipe, the left end of the sliding frame is fixedly connected with a sleeve, the inner cavity of the sleeve is slidably connected with a pipe plug a, the left end of the pipe plug a extends out of the sleeve and is in contact with the inner circle of the sealing ring, one end of the pipe plug a in the inner cavity of the sleeve is fixedly connected with a spring b, and the right end of the spring b is fixedly connected to the middle part of the inner cavity of the sleeve.

10. The anti-clog drainage device with buffer structure of claim 9, wherein: The outer circle of the auxiliary pipe in the inner cavity of the hard tube is fixedly connected with a water bag, the upper end inlet of the water bag extends into the inner cavity of the auxiliary pipe, the lower end of the sliding frame is arranged above the inlet of the water bag, two groups of drainage outlets are arranged in the lower end of the inner cavity of the sliding frame, one group of the drainage outlets is arranged above the inlet of the water bag, the inner circle of the middle part of the drainage outlet is fixedly connected with an elastic rope, the lower end of the elastic rope extends into the inner cavity of the water bag and is fixedly connected with a pipe plug b, and the area of the auxiliary pipe on the right side of the water bag is provided with a water outlet, and the other group of the drainage outlets is arranged above the water outlet.

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