Drainage tube device capable of effectively dredging blockage

Abstract

The invention discloses a drainage tube device capable of effectively dredging blockage, which comprises a dredging structure with one end connected with a drainage bag and the other end connected with a drainage tube; two one-way valves arranged along the side wall are arranged in the drainage bag and include the first one-way valve close to the drainage tube and the second one-way valve far away from the drainage tube, the space between the first one-way valve and the second one-way valve is a dredging space, and the first one-way valve and the second one-way valve are valves opened in one direction towards the drainage bag. The positive and negative pressure providing structure is used for providing positive pressure or negative pressure for the dredging space, when the negative pressure is provided, the first one-way valve is opened, substances in the drainage tube enter the dredging space under the action of negative pressure suction, and when the positive pressure is provided, the second one-way valve is opened, and substances in the dredging space are pushed out to the drainage bag under the extrusion of the positive pressure. The blocking problem is effectively solved through cooperation of positive pressure and negative pressure which act repeatedly and the one-way valve, no drainage liquid or other liquid flows back to a drainage area in the process, and the drainage area can be effectively protected.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular to the field of drainage tube blockage, and specifically is a drainage tube device for effectively clearing blockage. Background Art

[0002] Endoscopic retrograde cholangiopancreatography (ERCP) is a procedure that uses a duodenoscope to inject contrast agent and then displays the pancreatic and bile duct structure through X-rays, which can then diagnose and treat diseases such as common bile duct stones. Most patients need to have a nasobiliary duct placed after ERCP, and use a nasobiliary drainage tube to drain the accumulated bile and / or silt-like stones and other substances to the body to avoid blockage of the bile duct or pancreatic duct. During the drainage process, when some of the accumulated bile and / or silt-like stones and other substances are drained out of the body through the nasobiliary duct, there is a risk of blockage of the nasobiliary drainage tube. Once blockage occurs, it will cause great discomfort to the patient, which is not conducive to the diagnosis, treatment and recovery of the disease.

[0003] Currently, in clinical practice, the drainage connector is usually disconnected, the connector is connected to a syringe with a flushing fluid, and the flushing fluid is injected into the drainage position to flush the blocked area. However, this method usually injects too much liquid, which will cause a large drainage pressure. In addition, the material that blocks the drainage tube will not be drained out, and there is a risk of re-blocking and / or aggravating the original blockage.

[0004] In addition, in clinical work, patients with multiple serosal effusions such as peritoneal effusion and pleural effusion need to undergo puncture and catheter drainage as appropriate. Due to different causes and the nature of the drainage fluid, the drainage tube may be blocked by exudates, infected substances, tissue fragments, etc., resulting in poor drainage effect, causing the patient's symptoms to have no or almost no relief, and it is difficult to achieve the expected treatment effect. Clinically, negative pressure suction and / or flushing are generally performed through a syringe, and the intervention effect is often poor, and may even fail to relieve the blockage of the drainage tube. More seriously, it may increase infection and / or aggravate the original infection.

[0005] In view of the above technical problems, the present invention provides a drainage tube device which can effectively clear blockages. Summary of the invention

[0006] In the prior art, drainage tube blockage is mostly solved by flushing. However, for drainage in the bile duct after ERCP or drainage in various areas that require drainage after surgery, which are more easily damaged, when the drainage tube is blocked, directly flushing it can easily cause a large amount of liquid to enter the drainage area more quickly, which can easily cause deformation or impact of the drainage area tissue, which may cause tissue damage in the drainage area. In this way, when flushing the drainage tube to solve the blockage problem, special attention must be paid to the amount of flushing liquid, which is difficult to operate and difficult to achieve the ideal unblocking effect. Therefore, a technical solution that can solve the problem of drainage tube blockage without flushing the drainage tube is needed.

[0007] The present invention hopes to provide a drainage tube device combined with or integrally connected to the drainage tube, one end of the drainage tube device is connected to the drainage tube, and the other end is connected to the drainage bag, wherein the drainage tube device includes a tube body, two one-way valves are arranged in the tube body, and a dredging space is constructed between the two one-way valves, and the two one-way valves only allow drainage in the direction of the drainage bag, and a positive and negative pressure providing structure is connected to the outside of the dredging space. When the positive and negative pressure providing structure provides positive pressure to the dredging space, it will give an extrusion force to the liquid in the dredging space to be discharged outward, and this extrusion force gives a force to the one-way valves on both sides from the dredging space to the outside. In this case, only the one-way valve close to the drainage bag that flows outward is opened, and a greater pressure is given to the liquid in the dredging space, which will cause the blockage to deform and be led out into the drainage bag through the one-way valve, and if there is a continuous positive pressure, the liquid in the dredging space will continue to be pushed out. into the drainage bag to prevent the blockage of the dredging space, thereby solving the blockage problem of the drainage tube; when the positive and negative pressure providing structure provides a negative pressure to the dredging space, the negative pressure will give the two one-way valves in the dredging space a force toward the dredging space. In this case, only the one-way valve close to the drainage tube is opened, and the dredging space gives the drainage tube a suction force, which can cause the blockage in the drainage tube to deform or directly move under the action of the suction force, and the material blocked in the drainage tube is sucked into the dredging space. The blocked material in the drainage tube and the dredging space can be led out into the drainage bag by repeatedly providing positive and negative pressure. During the whole process, no liquid enters the drainage area, which has a very good protective effect on the drainage area, and the whole operation is not difficult. The positive and negative pressures can be automatically and manually adjusted according to the blockage situation, and the operation can be repeated at any time.

[0008] The specific technical solution is: a drainage tube device that can effectively clear blockages, comprising: The dredging structure is hollow inside, one end of which is used to connect to the drainage bag, and the other end of which is used to connect to the drainage tube; two one-way valves are arranged along the side wall, one of which is a one-way valve 1 arranged close to the drainage tube and the other is a one-way valve 2 arranged away from the drainage tube. The space between the one-way valve 1 and the one-way valve 2 is a dredging space. Both the one-way valve 1 and the one-way valve 2 are opened toward the drainage bag, so that all drainage can only be drained from the drainage tube to the drainage bag. The positive and negative pressure providing structure is used to provide positive or negative pressure to the dredging space. When negative pressure is provided, one-way valve one opens, and the material in the drainage tube enters the dredging space under the action of negative pressure suction force; when positive pressure is provided, one-way valve two opens, and the material in the dredging space is pushed into the drainage bag under positive pressure extrusion.

[0009] Furthermore, the one-way valve is a one-way valve structure. The reason for choosing a one-way valve is that the one-way valve has a certain elasticity and can enlarge the valve opening when positive and negative pressures act, working simultaneously with positive and negative pressures to lead larger blockages into the drainage tube or dredging space.

[0010] Furthermore, in order to prevent the drainage fluid in the drainage tube from entering the positive and negative pressure providing structure, a transition structure with a transition space is arranged on the outer side of the side wall corresponding to the dredging space, and an elastic membrane is arranged between the dredging space and the transition space. Positive pressure or negative pressure is provided to the transition space through the positive and negative pressure providing structure. When positive pressure is provided, the elastic membrane deforms toward the dredging space, giving the dredging space a positive pressure; when negative pressure is provided, the elastic membrane deforms toward the transition space, increasing the volume of the dredging space, giving the dredging space a negative pressure, and completing subsequent actions.

[0011] Furthermore, in order to provide a greater negative pressure, the positive and negative pressure providing structures can be a positive pressure providing structure and a negative pressure providing structure, and two connecting joints are arranged on the side wall of the transition space to respectively connect the positive pressure providing structure and the negative pressure providing structure; the positive pressure providing structure is a micro pump that continuously supplies air to the transition space, and the negative pressure providing structure is a micro pump that continuously pumps air; or a micro air pump with continuous air supply or air pumping is arranged. Alternatively, the positive and negative pressure providing structures are an elastic pressing balloon connected to the transition space through a connecting joint.

[0012] Alternatively, in order to prevent the drainage fluid in the drainage tube from entering the positive and negative pressure providing structure, another implementation is to set a film bag in the connecting tube between the positive and negative pressure providing structure and the dredging space. When the positive and negative pressure providing structure provides positive pressure, the gas or liquid output by the positive and negative pressure providing structure enters the film bag, and pushes the film bag into the dredging space, giving the dredging space a positive pressure; conversely, when the positive and negative pressure providing structure provides negative pressure, the film bag returns to the connecting tube, and may also drive the material in the dredging space to enter the film bag through the connecting tube, and push the film bag into the space where the positive and negative pressure providing structure is located.

[0013] Furthermore, the positive and negative pressure providing structure is an elastic pressing balloon, which is connected to the dredging structure through a connecting joint. The connecting joint is arranged on the side wall of the dredging structure corresponding to the dredging space. A film bag is arranged at the end of the positive and negative pressure providing structure or on the connecting joint. Under normal conditions, the film bag does not enter the dredging space. When positive pressure is required, the film bag is prompted to enter the dredging space to form positive pressure. When negative pressure is required, the film bag enters the space of the positive and negative pressure providing structure to provide negative pressure.

[0014] Furthermore, a three-way joint that can adjust the opening of the passage is set at the outer end of the drainage tube, which includes the first joint for connecting the drainage tube; the second joint for connecting the injector to complete the injection of various liquids or drugs; and the third joint for connecting the dredging structure. This setting can ensure that when the positive and negative pressures cannot dredge the blockage, flushing is used to dredge it. In addition, the setting of the second joint can also meet the sterile injection of the liquid required for treatment and / or clean flushing of the drainage area.

[0015] Technical Effects

[0016] A drainage tube device is connected to the drainage tube, the device includes a dredging structure and a positive and negative pressure providing structure, the dredging structure includes two one-way valves opened toward the drainage bag, a dredging space is arranged between the two one-way valves, and a positive and negative pressure providing structure for providing positive or negative pressure to the dredging space is arranged outside the dredging space. The above structure cooperates with the positive and negative pressure providing structure to provide positive pressure to the dredging space, and the drainage fluid in the dredging space enters the drainage bag by opening the one-way valve close to the drainage bag under positive pressure extrusion, and the positive and negative pressure structure A negative pressure is provided to the dredging space, and the negative pressure of the dredging space gives a suction force to the drainage tube through a one-way valve away from the drainage bag, so that the blocking material blocked in the drainage tube is drawn out into the dredging space by the suction force, and then a positive pressure is given to the dredging space to squeeze the drainage fluid in the dredging space into the drainage bag. In this way, the blockage problem can be effectively solved, and there is no problem of drainage fluid or other liquids flowing back to the drainage area during the process, so the drainage area can be effectively protected, and the entire structure is simple to set up and easy to operate.

[0017] By setting the one-way valve as a one-way valve, the opening of the one-way valve can be enlarged during the process of providing positive and negative pressure, which is more conducive to clearing blockages.

[0018] A transition space is set outside the dredging space, and the transition space is separated from the dredging space by an elastic membrane. A positive and negative pressure providing structure is set on the side wall of the transition space. The setting of the elastic diaphragm can ensure that the gas or liquid in the positive and negative pressure providing structure will not mix with the drainage fluid in the dredging space, thereby avoiding the problem of drainage fluid entering the positive and negative pressure providing structure.

[0019] The setting of the three-way joint can realize drainage operations with more functions. When drainage fluid needs to be drained out, the liquid is drained out directly through the passage connecting joint three and joint one. When liquid needs to be injected inwardly, the liquid is injected inwardly directly through the passage connecting joint two and joint one. In addition, the setting of the three-way joint can effectively avoid the risk of backflow of drainage fluid that has been drained and contamination caused by repeated replacement during injection. Mainly, the setting of connecting joint two can solve some blockages that are difficult to clear, connect the flushing syringe to forcibly clear the drainage tube, and / or perform sterile injection and clean flushing on the drainage area. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of the combined state of the dredging structure and the elastic pressing balloon in Example 1 of the present invention; Figure 2 It is a schematic diagram of the longitudinal cross-sectional structure of the combination of the dredging structure and the elastic pressing balloon in the normal drainage state in Example 1 of the present invention; Figure 3 A schematic diagram of a longitudinal cross-sectional structure of the combination of the dredging structure and the elastic pressing balloon in the embodiment 1 of the present invention in a positive pressure state; Figure 4 A schematic diagram of a longitudinal cross-sectional structure of the combination of the dredging structure and the elastic pressing balloon in the embodiment 1 of the present invention in a negative pressure state; Figure 5 This is a schematic diagram of the longitudinal cross-sectional structure of the embodiment of Example 2 of the present invention in a normal drainage state in which the positive and negative pressure providing structure is an elastic pressing balloon and the transition space is an annular space; Figure 6 A schematic diagram of a longitudinal cross-sectional structure in a positive pressure state is provided for an implementation method in which the positive and negative pressure providing structure is an elastic pressing balloon and the transition space is an annular space in Example 2 of the present invention; Figure 7 A schematic diagram of a longitudinal cross-sectional structure in a negative pressure state is provided for an implementation method in which the positive and negative pressure providing structure is an elastic pressing balloon and the transition space is an annular space in Example 2 of the present invention; Figure 8 A schematic diagram of a longitudinal cross-sectional structure of a normal drainage state of an implementation method in which the positive and negative pressure providing structure is a micro air pump and the transition space is an annular space in Example 2 of the present invention; Fig. 9 A schematic diagram of a longitudinal cross-sectional structure in a positive pressure state is provided for an implementation method in which the positive and negative pressure providing structure is a micro air pump and the transition space is an annular space in Example 2 of the present invention; Fig.10 A schematic diagram of a longitudinal cross-sectional structure in a negative pressure state is provided for an implementation method in which the positive and negative pressure providing structure is a micro air pump and the transition space is an annular space in Example 2 of the present invention; Fig.11 This is a schematic diagram of the longitudinal cross-sectional structure of the embodiment of Example 2 of the present invention in a normal drainage state in which the positive and negative pressure providing structure is an elastic pressing balloon and the transition space is a rectangular space; Fig.12 A schematic diagram of a longitudinal cross-sectional structure in a positive pressure state is provided for an implementation method in which the positive and negative pressure providing structure is an elastic pressing balloon and the transition space is a rectangular space in Example 2 of the present invention; Fig.13 A schematic diagram of a longitudinal cross-sectional structure in a negative pressure state is provided for an implementation in which the positive and negative pressure providing structure is an elastic pressing balloon and the transition space is a rectangular space in Example 2 of the present invention; Fig.14 This is a schematic diagram of the longitudinal cross-sectional structure of the embodiment of the present invention in the normal drainage state in which the one-way valve 1 is arranged at the position where the connecting pipe 1 is connected to the dredging structure; the one-way valve 2 is arranged at the position where the connecting pipe 2 is connected to the dredging structure; Fig.15 This is a schematic diagram of the overall structure of the combination of a drainage tube, a three-way connector, a drainage device and a drainage bag in Example 3 of the present invention; Fig.16 This is a schematic diagram of the structure of the three-way joint in Example 3 of the present invention; Fig.17 It is a longitudinal cross-sectional structural schematic diagram of the three-way joint part in Example 3 of the present invention, in which the connecting joint 1 is connected with the connecting joint 2; Fig.18 It is a longitudinal cross-sectional structural schematic diagram of the three-way joint part in Example 3 of the present invention, in which the connection joint 1 is connected with the connection joint 3; 1. Dredging structure; 11. Dredging space; 12. Connecting joint 1; 121. Film bag; 13. Connecting tube 1; 14. Connecting tube 2; 21. One-way valve 1; 22. One-way valve 2; 31. Elastic pressing balloon; 311. Switch button; 32. Micro air pump; 4. Transition structure; 411. Rectangular space; 412. Annular space; 42. Elastic membrane; 43. Connecting joint 2; 5. Three-way joint; 51. First joint; 52. Second joint; 53. Third joint; 54. Passage adjustment core; 55. T-type passage; 56. T-type structure; 6. Drainage bag; 7. Drainage tube. DETAILED DESCRIPTION

[0021] Embodiment 1: refer to Figure 1-4 ; A drainage tube device for effectively unblocking blockage, comprising an unblocking structure 1, which is hollow inside, one end of which is used to connect to the drainage bag 6, and the other end of which is used to connect to the drainage tube 7; two one-way valves arranged along the side wall are arranged inside, namely a one-way valve 21 arranged in the direction close to the drainage tube 7 and a one-way valve 22 arranged in the direction away from the drainage tube 7, the space between the one-way valve 21 and the one-way valve 22 is a unblocking space 11, and the one-way valve 21 and the one-way valve 22 are both opened in one direction toward the drainage bag 6; so that all drainage materials can only be drained from the drainage tube 7 to the drainage bag 6; and a positive and negative pressure providing structure, which is used to provide positive pressure or negative pressure to the unblocking space 11, when negative pressure is provided, the one-way valve 21 is opened, and the material in the drainage tube 7 enters the unblocking space 11 under the action of the negative pressure suction force; when positive pressure is provided, the one-way valve 22 is opened, and the material in the unblocking space 11 is pushed out to the drainage bag 6 under the positive pressure. The one-way valve may be a one-way valve structure adapted to be in a pipe body in the prior art.

[0022] The dredging structure 1 includes a tubular structure externally connected between the drainage bag 6 and the drainage tube 7, which can be integrally connected to the drainage tube 7 or combinedly connected, and is combined with the drainage bag 6 by a combined connection. When the combined connection is selected, in order to avoid leakage and combined contact at the joint, the joint is set to a threaded combination.

[0023] The one-way valve structure is preferred for one-way valves. The reason for choosing a one-way valve is that it has a certain elasticity and can be adjusted to a larger opening when positive and negative pressures act. It works with positive and negative pressures at the same time, which is conducive to the passage of blocked substances. The one-way valve has the advantage of cooperating with positive and negative pressures to solve the blockage problem that other one-way valves do not have.

[0024] A connecting joint 12 is provided at a position near the end of the drainage tube 7 outside the dredging structure 1, which is used to connect the positive and negative pressure providing structure with the dredging structure 1; the positive and negative pressure providing structure is an elastic pressing balloon 31, and a switch button 311 is provided on the elastic balloon. When the switch button 311 is turned on, air can be leaked through the switch button 311, so that the entire structure can be restored to its original normal pressure state. The switch button 311 is turned off, and the elastic pressing balloon 31 in the normal state is pressed to provide positive pressure; the switch button 311 is turned on, and the elastic pressing balloon 31 is first compressed and deformed, and maintained in the compressed state, and the switch button 31 is turned off, and the suction force of the elastic pressing balloon 31 to restore the original state provides negative pressure. Of course, in the specific operation process, after the elastic pressing balloon 31 is pressed to provide positive pressure, the material in the dredging space 11 is led out to the drainage bag 6, and no force is applied to the elastic pressing balloon 31, then the elastic recovery force of the elastic pressing balloon 31 will give a negative pressure to the transition space, and then give a negative pressure to the dredging space 11.

[0025] A more preferred embodiment is that the connecting joint 12 is arranged at an angle, with the first end arranged near the one-way valve 13 and extending obliquely toward the drainage tube 7. This arrangement can prevent the drainage material from entering the positive and negative pressure providing structure during normal drainage.

[0026] A more preferred embodiment is to provide a method for blocking the drainage liquid from entering the positive and negative pressure providing structure. A film bag 121 is provided on the inner side of the end of the positive and negative pressure providing structure or in the connecting joint to block the positive and negative pressure providing structure from the dredging space 11. Under normal conditions, the film bag does not enter the dredging space 11. When positive pressure is required, the film bag is prompted to enter the dredging space 11 to form positive pressure. When negative pressure is required, the film bag enters the space of the positive and negative pressure providing structure to provide negative pressure.

[0027] In a more preferred embodiment, the film bag 121 is an elastic film 42 bag, which is only used to block the drainage material from flowing in multiple spaces. The setting of the elastic film 42 bag can well ensure that it can enter the corresponding space with the provision of positive and negative pressure, and can occupy a smaller space when it is retracted in the connection joint 12. In a more preferred embodiment, the periphery of the film bag is fixed on the side wall of the connection joint 12, and the whole is retracted in the middle of the connection joint 12. This setting is to better adapt to enter different spaces and ensure the effectiveness of the formation of positive and negative pressure.

[0028] The two one-way valves are arranged in such a way that the one-way valves are directly arranged inside a pipe body having the same diameter as the dredging space 11; this arrangement can reduce the difficulty of selecting and adapting the one-way valve structure; Example 2 refer to Figure 5-14 ; A drainage tube device for effectively unblocking blockage, comprising an unblocking structure 1, which is hollow inside, one end of which is used to connect to the drainage bag 6, and the other end of which is used to connect to the drainage tube 7; two one-way valves arranged along the side wall are arranged inside, namely a one-way valve 21 arranged in the direction close to the drainage tube 7 and a one-way valve 22 arranged in the direction away from the drainage tube 7, the space between the one-way valve 21 and the one-way valve 22 is the unblocking space 11, the one-way valve 21 and the one-way valve 22 are valves that are opened in one direction toward the drainage bag 6, so that all drainage materials can only be drained from the drainage tube 7 to the drainage bag 6; and a positive and negative pressure providing structure, which is used to provide positive pressure or negative pressure to the unblocking space 11, when negative pressure is provided, the one-way valve 21 opens, and the material in the drainage tube 7 enters the unblocking space 11 under the action of the negative pressure suction force; when positive pressure is provided, the one-way valve 22 opens, and the material in the unblocking space 11 is pushed out to the drainage bag 6 under the positive pressure. The one-way valve may be a one-way valve structure adapted to be in a pipe body in the prior art.

[0029] The dredging structure is a tubular structure externally connected between the drainage bag 6 and the drainage tube 7. It can be integrally connected to the drainage tube 7 or combinedly connected, and is combined with the drainage bag 6 by a combined connection. When the combined connection is selected, in order to avoid leakage and combined contact at the joint, the joint is set to a threaded combination.

[0030] The one-way valve structure is preferred for one-way valves. The reason for choosing a one-way valve is that it has a certain elasticity and can be adjusted to a larger opening when positive and negative pressures act. It works with positive and negative pressures at the same time, which is conducive to the passage of blocked substances. The one-way valve has the advantage of cooperating with positive and negative pressures to solve the blockage problem that other one-way valves do not have.

[0031] A more preferred embodiment is to set a transition structure 4 with a transition space on the outer side of the side wall corresponding to the dredging space 11, and set an elastic membrane 42 between the dredging space 11 and the transition space, and provide positive pressure or negative pressure to the transition space through the positive and negative pressure providing structure. When positive pressure is provided, the elastic membrane 42 deforms toward the dredging space 11, reducing the volume of the dredging space 11 and giving the dredging space 11 a positive pressure; when negative pressure is provided, the elastic membrane 42 deforms toward the transition space, increasing the volume of the dredging space 11, giving the dredging space 11 a negative pressure, and completing the subsequent actions. In the normal drainage process, the elastic membrane 42 does not deform to cause positive and negative pressures; the purpose of this setting is to avoid the deformation of the elastic membrane 42 when non-positive and negative pressures are provided, which affects the normal drainage direction, and also to provide the corresponding positive and negative pressures by guiding its deformation when positive and negative pressures are needed.

[0032] More specifically, the transition space may be a rectangular space 411 extending from the side wall of the dredging space 11 , and the elastic membrane 42 is disposed between the rectangular space 411 and the dredging space 11 .

[0033] Alternatively, a better implementation is that the transition space is an annular space 412 surrounding the outside of the dredging space 11. When it is an annular space 412, the elastic membrane 42 is also an annular elastic membrane 42. The supporting force of the dredging structure 1 is provided by the side wall of the transition space. This setting can ensure 360-degree positive and negative pressure, and the positive and negative pressures of the dredging space 11 will be more uniform, resulting in a better dredging effect.

[0034] A second connection joint 43 is provided on the transition structure 4 for combining and connecting the positive and negative pressure providing structure with the transition structure.

[0035] One implementation method of the positive and negative pressure providing structure is as follows: the positive and negative pressure providing structure is an elastic pressing balloon 31, and a switch button 311 is set on the elastic balloon. When the switch button 311 is turned on, air can leak through the switch button 311, so that the entire structure returns to its original normal pressure state. Turn off the switch button 311, and press the elastic pressing balloon 31 in the normal state to provide positive pressure; turn on the switch button 311, first compress and deform the elastic pressing balloon 31, and maintain it in the compressed state, turn off the switch button 311, and the elastic pressing balloon 31 restores the suction force of the original state to provide negative pressure. Of course, in the specific operation process, after pressing the elastic pressing balloon 31 to provide positive pressure, the material in the dredging space 11 is led out to the drainage bag 6, and no force is applied to the elastic pressing balloon 31, then the elastic recovery force of the elastic pressing balloon 31 will give a negative pressure to the transition space, and then give a negative pressure to the dredging space 11.

[0036] Alternatively, another embodiment of the positive and negative pressure providing structure is: the positive and negative pressure providing structure can be divided into a positive pressure providing structure and a negative pressure providing structure arranged on the transition structure 4, and two connecting joints 43 are arranged on the side wall of the transition space to respectively connect the positive pressure providing structure and the negative pressure providing structure; the positive pressure providing structure is a micro pump that continuously supplies air to the transition space, and the negative pressure providing structure is a micro pump that continuously pumps air; or a micro air pump 32 with a continuous air supply or air pumping function is arranged. A more preferred embodiment, wherein an inflation button and an air pumping button can be arranged on the micro air pump 32; the single air supply and air pumping volume of the micro air pump 32 can also be set as needed, and the air supply and air pumping frequency can be set, and by repeated operations, the overall dredging effect of the drainage tube 7 can be further guaranteed.

[0037] The two check valves are set as follows: Figure 5-13 ; Directly set the two one-way valves inside the pipe body with the same diameter as the dredging space 11; this setting can reduce the difficulty of selecting and adapting the one-way valve structure; Alternatively, refer to Fig.14 ; A connecting pipe is respectively provided at both ends of the dredging structure 1, which are a connecting pipe 13 connected to the drainage tube 7, and a connecting pipe 2 14 connected to the drainage bag 6, wherein a one-way valve 21 is provided at the position where the connecting pipe 13 is connected to the dredging structure 1; a one-way valve 22 is provided at the position where the connecting pipe 2 14 is connected to the dredging structure 1.

[0038] Example 3 refer to Figure 15-18 ; On the basis of Example 1 and Example 2, the following implementation method is set for the blockage in special situations and the injection of therapeutic drugs. Specifically, a three-way joint 5 that can adjust the opening of the passage is set at the external end of the drainage tube 7, which are the first joint 51 for connecting the drainage tube 7; the second joint 52 for connecting the injector to complete the injection of various liquids; the third joint 53 for connecting the drainage tube device. This arrangement can ensure that when the positive and negative pressures cannot clear the blockage, flushing is used to clear it. In addition, the setting of the second joint 52 can also meet the injection of liquids required for treatment. The connecting pipe 13 on the dredging structure 1 is connected to the third joint 53; the combination of each joint is also provided with a sealed and not easy to come off combination such as screws.

[0039] The various joints and the structure in which they are combined can be combined through a threaded structure or through other secure means.

[0040] In a more preferred embodiment, the three joints are arranged vertically in sequence, a passage adjustment core 54 is arranged in the three-way joint 5, a T-shaped passage 55 is arranged in the passage adjustment core 54, and a rotation adjustment structure of the passage adjustment core 54 is arranged outside the three-way joint 5. The three-way joint 5 is a circular pancake-shaped structure as a whole, which includes a circular pancake-shaped outer shell and a circular pancake-shaped passage adjustment core 54.

[0041] In a more preferred embodiment, the rotation adjustment structure is a T-shaped structure 56 corresponding to the position of the T-shaped passage 55; by rotating the cross arm of the T-shaped structure 56 to a position perpendicular to the second or third joint 53 to be blocked, a passage connecting this joint with the first joint 51 can be achieved.

[0042] The technical solutions in the embodiments of the present invention are clearly and completely described above through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other. Based on the embodiments in 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.

Claims

1. A drainage tube device for effectively clearing blockage, characterized in that: It includes The dredging structure is hollow inside, one end of which is used to connect to the drainage bag, and the other end of which is used to connect to the drainage tube; two one-way valves are arranged along the side wall, one of which is a one-way valve 1 arranged close to the drainage tube and the other is a one-way valve 2 arranged away from the drainage tube. The space between the one-way valve 1 and the one-way valve 2 is the dredging space, and both the one-way valve 1 and the one-way valve 2 are opened in one direction toward the drainage bag; The positive and negative pressure providing structure is used to provide positive or negative pressure to the dredging space. When negative pressure is provided, one-way valve one opens, and the material in the drainage tube enters the dredging space under the action of negative pressure suction force; when positive pressure is provided, one-way valve two opens, and the material in the dredging space is pushed into the drainage bag under positive pressure extrusion.

2. The drainage tube device according to claim 1, characterized in that: The one-way valve is a one-way valve structure.

3. The drainage tube device according to claim 1, characterized in that: The positive and negative pressure providing structure is an elastic pressing balloon, on which a switch button is arranged. When the switch button is turned on, air leaks through the switch button, so that the whole structure returns to its original normal pressure state; when the switch button is turned off, the elastic pressing balloon in the normal state is pressed to deform it, thereby providing positive pressure; When the switch button is turned on, the elastic pressing balloon is compressed and deformed first, and maintained in the compressed state. When the switch button is turned off, the elastic pressing balloon returns to its original state to provide negative pressure.

4. The drainage tube device according to claim 3, characterized in that: A connecting joint 1 is provided at a position outside the dredging structure near the end of the drainage tube, for connecting the positive and negative pressure structure with the dredging structure; Preferably, the connecting joint is arranged obliquely, and the first end is arranged near the first one-way valve and extends obliquely toward the drainage tube.

5. The drainage tube device according to claim 3, characterized in that: A film bag is arranged inside the end of the positive and negative pressure providing structure or in the connecting joint to block the positive and negative pressure providing structure and the dredging space. Under normal conditions, the film bag does not enter the dredging space. When positive pressure needs to be provided, the film bag is urged to enter the dredging space to form positive pressure. When negative pressure needs to be provided, the film bag enters the space of the positive and negative pressure providing structure to provide negative pressure. Preferably, the film bag is an elastic film bag; Preferably, the periphery of the membrane bag is fixed on a side wall of the connecting joint, and the whole is retracted in the middle of the connecting joint 12.

6. The drainage tube device according to claim 1, characterized in that: A transition structure with a transition space is arranged outside the side wall corresponding to the dredging space, an elastic membrane is arranged between the dredging space and the transition space, and positive pressure or negative pressure is provided to the transition space through the positive and negative pressure providing structure. When positive pressure is provided, the volume of the dredging space is reduced, and the elastic membrane is deformed toward the dredging space, giving the dredging space a positive pressure; when negative pressure is provided, the elastic membrane is deformed toward the transition space, increasing the volume of the dredging space, and giving the dredging space a negative pressure; Preferably, during normal drainage, the elastic membrane does not deform to cause positive or negative pressure; Preferably, a second connecting joint is provided on the transition structure for combining and connecting the positive and negative pressure providing structure with the transition structure.

7. The drainage tube device according to claim 6, characterized in that: The transition space is a rectangular space extending from the side wall of the dredging space, and the elastic membrane is arranged between the rectangular space and the dredging space; Alternatively, the transition space is an annular space surrounding the outside of the dredging space. When it is an annular space, the elastic membrane is also an annular elastic membrane, and the supporting force of the dredging structure is provided by the side wall of the transition space.

8. The drainage tube device according to claim 6, characterized in that: The positive and negative pressure providing structure is an elastic pressing balloon. Optionally, a switch button is provided on the elastic balloon. When the switch button is turned on, air leaks through the switch button, so that the entire structure returns to its original normal pressure state. Alternatively, the positive and negative pressure providing structure is divided into a positive pressure providing structure and a negative pressure providing structure arranged on the transition structure; Alternatively, the positive and negative pressure providing structure is a micro air pump with a continuous air delivery or air extraction function; Preferably, an inflation button and an exhaust button can be provided on the micro air pump, and the single air supply and exhaust volume of the micro air pump can be set as required, and the frequency of air supply and exhaust can be set.

9. The drainage tube device according to claim 1, characterized in that: Directly set the one-way valve 1 and the one-way valve 2 inside the pipe body with the same diameter as the dredging space; Alternatively, a connecting pipe is provided at each end of the dredging structure, namely connecting pipe 1 connected to the drainage pipe, and connecting pipe 2 connected to the drainage bag; one-way valve 1 is provided at the edge of connecting pipe 1 close to one end of the dredging space; one-way valve 2 is provided at the edge of connecting pipe 2 close to one end of the dredging space.

10. The drainage tube device according to claim 8, characterized in that: A three-way joint capable of adjusting the opening of the passage is provided at the outer end of the drainage tube, which includes a first joint for connecting the drainage tube; a second joint for connecting the liquid injector to complete the injection of various liquids; and a third joint for connecting the drainage tube device. Preferably, the three joints are arranged vertically in sequence, a passage adjustment core is arranged in the three-way joint, a T-shaped passage is arranged in the passage adjustment core 54, and a rotation adjustment structure of the passage adjustment core is arranged outside the three-way joint; Preferably, the three-way joint is a circular pancake-shaped structure as a whole, which includes a circular pancake-shaped outer shell and a circular pancake-shaped passage adjustment core; Preferably, the rotation adjustment structure is a T-shaped structure corresponding to the position of the T-shaped passage; by rotating the cross arm of the T-shaped structure to a position perpendicular to the second or third joint to be blocked.

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