Drainage device

Abstract

The utility model relates to the technical field of medical instruments, and discloses a drainage device which comprises a drainage assembly, a flushing assembly and a one-way valve assembly. One end of the drainage assembly extends into the focus of a patient, the other end of the drainage assembly extends out of the body of the patient, the flushing assembly is connected with the drainage assembly and provides flushing fluid into the drainage assembly, and when the drainage assembly is blocked, the flushing fluid is provided into the drainage assembly through the flushing assembly; the one-way valve assembly enables flushing fluid to flow into the drainage assembly in a one-way mode, the flushing assembly is matched with the one-way valve assembly, the pressure in the drainage assembly can be guaranteed while the flushing fluid is provided into the drainage assembly, and a plug in the drainage assembly is flushed away. The technical problem that a drainage tube in the prior art is inconvenient to dredge is solved, and the technical effect that the drainage tube is convenient to dredge is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a drainage device. Background Art

[0002] Peripancreatic abscess is a common complication of severe pancreatic disease, which often causes severe infection and endangers the patient's life. Abscess drainage is the preferred treatment for abscesses. Placing a double set of drainage tubes in the abscess cavity is a commonly used drainage method. The drainage tube is a double-tube, with the first end placed in the abscess cavity of the surgical patient and the second end located outside the patient's body. A plurality of drainage holes are provided on the outer wall of the first end. A thinner flushing tube is placed through the tube wall near the second end of the lumen, running in the outer lumen of the drainage tube, with the head end extending out of the outer tube. The drainage fluid flowing out of the drainage tube is generally purulent drainage fluid or necrotic tissue.

[0003] Because the peripancreatic necrotic tissue is corroded by pancreatic enzymes, it often does not liquefy and falls off in irregular pieces. Due to the small diameter of the drainage tube, it is easy to get blocked. After the blockage, the retention of infectious body fluids will aggravate the infection and there is a risk of septic shock. If the drainage tube can be flushed and unblocked in time when there is a lot of detached tissue, it can avoid blockage of the drainage tube or make the blocked drainage tube unblocked. Otherwise, the drainage tube may become completely blocked, affecting drainage and causing serious infection.

[0004] In order to keep the drainage tube unobstructed, in actual operation, the doctor or nurse needs to squeeze the drainage tube by hand to make the flushing liquid in the drainage tube flow back, hoping to flush the obstruction of the drainage tube. However, the amount of liquid backflow caused by squeezing the drainage tube by hand is small, which cannot dredge the drainage tube well. Utility Model Content

[0005] The utility model aims to provide a drainage device to solve the technical problem of inconvenient dredging of drainage tubes in the prior art.

[0006] In order to solve the above technical problems, the utility model provides a drainage device, including a drainage component, a flushing component and a one-way valve component;

[0007] One end of the drainage component extends into the patient's lesion, and the other end extends out of the patient's body. The flushing component is connected to the drainage component, and the flushing component provides flushing liquid into the drainage component;

[0008] The one-way valve assembly is connected to the flushing assembly, and the one-way valve assembly allows the flushing liquid to flow into the drainage assembly in a one-way manner.

[0009] In an optional embodiment, the flushing assembly includes a squeezing ball and a flushing tube;

[0010] The squeezing ball is connected to the plugging tube via the one-way valve assembly, the plugging tube is connected to the drainage assembly, and the squeezing ball delivers the flushing liquid into the drainage assembly via the one-way valve assembly and the plugging tube.

[0011] In an optional embodiment, the flushing assembly further includes a first valve;

[0012] The first valve is arranged on the plugging pipe, and the first valve is used to control the on and off of the plugging pipe.

[0013] In an optional embodiment, the flushing assembly further includes a water storage bucket;

[0014] The water storage barrel is connected to one end of the one-way valve assembly away from the flushing pipe, and the flushing liquid is arranged in the water storage barrel.

[0015] In an optional embodiment, the one-way valve assembly includes a housing, a first one-way valve and a second one-way valve;

[0016] The first one-way valve and the second one-way valve are respectively arranged in the shell and connected, the first one-way valve and the second one-way valve are arranged far away from each other, and the shell is connected to the flushing component.

[0017] In an optional embodiment, the first one-way valve and the second one-way valve have the same structure.

[0018] In an optional embodiment, the first one-way valve includes a housing and a central ball;

[0019] The outer shell is arranged in and connected with the shell body, the central ball is arranged in the outer shell, the central ball is slidably connected with the outer shell, through holes are arranged on both sides of the outer shell, and the central ball can block the through hole on one side of the outer shell.

[0020] In an optional embodiment, a conical portion is provided on one side of the housing, and a baffle is provided on the other side of the housing;

[0021] The diameter of the conical portion is arranged to decrease in a direction away from the baffle, the through hole is provided at one end of the conical portion away from the baffle, and the inner wall of the conical portion can abut against the central ball;

[0022] The baffle plate is provided with a plurality of through holes, and the plurality of through holes are arranged at intervals along the surface of the baffle plate.

[0023] In an optional embodiment, the drainage assembly includes a drainage tube and a tee tube;

[0024] One end of the drainage tube is connected to the lesion of the patient, and the other end is connected to the three-way tube, and the three-way tube is connected to the flushing component.

[0025] In an optional embodiment, a flushing pipe and a second valve are also included;

[0026] One side of the flushing tube extends into the drainage assembly, one end of the flushing tube is connected to the patient's lesion, and the flushing tube is used to provide the flushing fluid to the patient's lesion;

[0027] The second valve is arranged on the flushing pipe, and the second valve is used to control the on-off of the flushing pipe.

[0028] The utility model provides a drainage device, including: a drainage component, a flushing component and a one-way valve component; one end of the drainage component extends into the patient's lesion, and the other end extends out of the patient's body, the flushing component is connected to the drainage component, and the flushing component provides flushing liquid into the drainage component. When the drainage component is blocked, the flushing liquid is provided into the drainage component through the flushing component, and the one-way valve component is connected to the flushing component, and the one-way valve component allows the flushing liquid to flow into the drainage component in one direction. The flushing component cooperates with the one-way valve component to provide flushing liquid into the drainage component while ensuring the pressure in the drainage component, so that the blockage in the drainage component is flushed away. The utility model solves the technical problem of inconvenient drainage tube dredging in the prior art, and achieves the technical effect of convenient drainage tube dredging. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the drainage device mentioned in the embodiment of the utility model;

[0030] Figure 2 It is a cross-sectional view of the closed state of the first one-way valve mentioned in the embodiment of the utility model;

[0031] Figure 3 It is a cross-sectional view of the first one-way valve mentioned in the embodiment of the utility model in the open state;

[0032] Figure 4 This is another cross-sectional view of the open state of the first one-way valve mentioned in the embodiment of the utility model.

[0033] In the figure, 1-squeezing ball; 2-blocking pipe; 3-first valve; 4-water storage tank; 5-shell; 6-first one-way valve; 7-second one-way valve; 8-outer shell; 9-center ball; 10-conical part; 11-baffle; 12-drainage pipe; 13-tee pipe; 14-flushing pipe; 15-second valve; 16-connecting pipe. DETAILED DESCRIPTION

[0034] The following is a further detailed description of the specific implementation of the present utility model in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the related art, the peripancreatic necrotic tissue is not liquefied after being corroded by pancreatic enzymes, and falls off in irregular blocks. Due to the small diameter of the drainage tube, it is easy to get blocked. When the drainage tube is blocked, in order to keep the drainage tube unobstructed, in actual operation, the doctor or nurse needs to squeeze the drainage tube by hand to make a small amount of flushing fluid in the drainage tube flow back, hoping to flush the obstruction of the drainage tube. However, the amount of liquid reflux caused by squeezing the drainage tube by hand is small, which is not enough to dredge the drainage tube.

[0037] In view of this, if Figure 1-Figure 4 As shown, some embodiments of the utility model provide a drainage device, including a drainage component, a flushing component and a one-way valve component; one end of the drainage component extends into the patient's lesion, and the other end extends out of the patient's body, the flushing component is connected to the drainage component, and the flushing component provides flushing fluid into the drainage component; the one-way valve component is connected to the flushing component, and the one-way valve component allows the flushing fluid to flow in one direction into the drainage component.

[0038] In the above embodiment, the materials of the drainage component, the flushing component and the one-way valve component may include rubber and polyurethane. The drainage component is hollow inside. The drainage component is used to drain pus or necrotic tissue from the patient's lesion. One end of the drainage component extends through the patient's body surface to the patient's lesion, so that the pus and necrotic tissue at the patient's lesion can flow out of the body through the inside of the drainage component. Furthermore, the flushing component is connected to the side of the drainage component extending outside the patient's body to avoid the connection point between the flushing component and the drainage component being in the patient's body, increasing the size of the patient's opening, and causing more pain to the patient. The flushing component can pressurize the drainage component. The flushing component pumps the flushing liquid into the drainage component through the one-way valve component. The one-way valve component can ensure the flow direction of the flushing liquid, so that the flushing liquid only flows into the drainage component, and the flushing liquid or the drained pus and necrotic tissue cannot flow into the flushing component through the drainage component, and the pressure in the drainage component is also ensured, so that the pressure in the drainage component is greater, and it is easier to ensure that the blockage of the drainage component is flushed.

[0039] Optionally, sterile saline may be used as the flushing fluid.

[0040] Some embodiments of the present invention provide a drainage device, including: a drainage component, a flushing component and a one-way valve component; one end of the drainage component extends into the patient's lesion, and the other end extends out of the patient's body, the flushing component is connected to the drainage component, and the flushing component provides flushing liquid into the drainage component. When the drainage component is blocked, the flushing liquid is provided into the drainage component through the flushing component, and the one-way valve component is connected to the flushing component, and the one-way valve component allows the flushing liquid to flow into the drainage component in one direction. The flushing component cooperates with the one-way valve component to provide flushing liquid into the drainage component while ensuring the pressure in the drainage component, so that the blockage in the drainage component is flushed away. The technical problem of inconvenient drainage tube dredging in the prior art is solved, and the technical effect of convenient drainage tube dredging is achieved.

[0041] In an optional embodiment, the flushing assembly includes a squeezing ball 1 and a plugging tube 2; the squeezing ball 1 is connected to the plugging tube 2 through a one-way valve assembly, the plugging tube 2 is connected to the drainage assembly, and the squeezing ball 1 transports flushing liquid into the drainage assembly through the one-way valve assembly and the plugging tube 2.

[0042] In the above embodiment, the squeezing ball 1 can be made of silicone or rubber material, the squeezing ball 1 can be spherical, and an opening is set on one side of the squeezing ball 1 to connect to the one-way valve assembly. The squeezing ball 1 can be connected to the one-way valve assembly by bonding. The squeezing ball 1 can squeeze the flushing liquid into the drainage assembly through the one-way valve assembly and the plugging tube 2, and the plugging tube 2 can be made of transparent material, and the squeezing ball 1 can be made of opaque material. The two ends of the plugging tube 2 are respectively connected to the external part of the drainage assembly and the one-way valve assembly.

[0043] In an optional embodiment, the flushing component further includes a first valve 3 ; the first valve 3 is disposed on the flushing pipe 2 , and the first valve 3 is used to control the on-off of the flushing pipe 2 .

[0044] In the above embodiment, the first valve 3 may include a butterfly valve or a ball valve. The first valve 3 is arranged on the flushing tube 2. The first valve 3 is used to control the on-off of the flushing tube 2. When the drainage component is blocked, it is necessary to squeeze the ball 1 to transport flushing liquid into the drainage component through the one-way valve assembly and the flushing tube 2, and then open the first valve 3; when the drainage component is not blocked, the first valve 3 is closed to prevent pus or necrotic tissue in the drainage component from entering the one-way valve assembly and the squeezing ball 1 through the flushing tube 2.

[0045] In an optional embodiment, the flushing assembly further includes a water storage barrel 4 ; the water storage barrel 4 is connected to an end of the one-way valve assembly away from the flushing pipe 2 , and flushing liquid is provided in the water storage barrel 4 .

[0046] In the above embodiment, an opening is provided at the bottom of the water storage barrel 4, and the bottom of the water storage barrel 4 is connected to the end of the one-way valve assembly away from the plugging pipe 2 through the connecting pipe 16. The water storage barrel 4 contains flushing liquid, and the water storage barrel 4 can flow the flushing liquid into the one-way valve assembly through the connecting pipe 16, and under the action of the one-way valve assembly and the squeezing ball 1, it is unidirectionally transported to the drainage assembly through the plugging pipe 2, thereby providing sufficient flushing liquid when plugging.

[0047] In an optional embodiment, the one-way valve assembly includes a shell 5, a first one-way valve 6 and a second one-way valve 7; the first one-way valve 6 and the second one-way valve 7 are respectively arranged in the shell 5 and connected, the first one-way valve 6 and the second one-way valve 7 are arranged far away from each other, and the shell 5 is connected to the flushing assembly.

[0048] In the above embodiment, two valve bodies, a first one-way valve 6 and a second one-way valve 7, are provided in the shell 5, and a channel is provided inside the shell 5. The inside of the shell 5 can be provided in a three-way shape. The first one-way valve 6 and the second one-way valve 7 can be provided on the same straight line and flush with the two ends of the shell 5. The squeezing ball 1 is installed in the middle position of the shell 5 and is connected with the inside of the shell 5. The first one-way valve 6 is provided close to the water storage barrel 4, and the second one-way valve 7 is provided close to the drainage component. When the squeezing ball 1 is squeezed, the flushing liquid flows out through the second one-way valve 7. Shell 5, and then enters the drainage component through the plugging pipe 2, at this time the first one-way valve 6 is in a closed state; and when the squeezing ball 1 relaxes and generates negative pressure, the squeezing ball 1 drives the differential negative pressure inside the shell 5, at this time the second one-way valve 7 is in a closed state, the first one-way valve 6 is in a relaxed state, at this time the flushing liquid in the water storage barrel 4 enters the shell 5 through the connecting pipe 16 to replenish the flushing liquid, the operator continuously squeezes the squeezing ball 1, and the squeezing ball 1 automatically relaxes through its elasticity, the flushing liquid is driven, and the flow direction of the flushing liquid is made single.

[0049] In an optional embodiment, the first one-way valve 6 and the second one-way valve 7 have the same structure.

[0050] In the above embodiment, the first one-way valve 6 and the second one-way valve 7 can use the same valve body, and both can adopt a structure similar to a bellows, and realize the internal one-way flow of the fluid by driving the rotating flap through the flushing liquid. A steel column one-way valve can also be used to make the first one-way valve 6 and the second one-way valve 7 work together to control the flow direction of the flushing liquid.

[0051] Optionally, the first one-way valve 6 and the second one-way valve 7 may also adopt different valve bodies. The first one-way valve 6 may adopt a bellows-like structure, and the second one-way valve 7 may adopt a steel column one-way valve. Alternatively, the first one-way valve 6 may adopt a steel column one-way valve, and the second one-way valve 7 may adopt a bellows-like structure, thereby controlling the flow direction of the flushing liquid.

[0052] In an optional embodiment, the first one-way valve 6 includes an outer shell 8 and a center ball 9; the outer shell 8 is disposed in and connected to the shell 5, the center ball 9 is disposed in the outer shell 8, the center ball 9 is slidably connected to the outer shell 8, and through holes are disposed on both sides of the outer shell 8, and the center ball 9 can block the through holes on one side of the outer shell 8.

[0053] In the above embodiment, the material and shape of the first one-way valve 6 and the second one-way valve 7 are consistent. Taking the first one-way valve 6 as an example, the first one-way valve 6 can be made of metal, or polyethylene, polypropylene, polycarbonate and the like. The first one-way valve 6 includes a shell 8, the shell 8 is cylindrical, and the inner wall of the shell 5 can also be cylindrical. The shell 8 is correspondingly attached to the inner wall of the shell 5. The shell 8 can be connected to the shell 5 by gluing or by threading. Through holes are provided at both ends of the shell 8, and the inside of the shell 8 is provided with a central ball 9. The diameter of the center ball 9 is smaller than the diameter of the outer shell 8, so that the center ball 9 can reciprocate along the length direction of the outer shell 8. Further, when the center ball 9 moves along the length direction of the outer shell 8, when the center ball 9 abuts against the first end of the outer shell 8, the first one-way valve 6 is in a closed state, and the flushing liquid cannot pass through the first one-way valve 6 at this time. When there is a gap between the center ball 9 and the first end of the outer shell 8, or when the center ball 9 abuts against the second end of the outer shell 8, the first one-way valve 6 is in a connected state, and the flushing liquid can push the center ball 9 to move, so that the flow direction of the flushing liquid is restricted.

[0054] Optionally, the outer shell 8 and the central ball 9 may also be made of ceramic material to make the outer shell 8 and the central ball 9 more antibacterial and more difficult for bacteria to attach, and the outer shell 8 may be made of stainless steel to make the outer shell 8 easier to manufacture and less susceptible to corrosion.

[0055] In an optional embodiment, a conical portion 10 is provided on one side of the outer shell 8, and a baffle 11 is provided on the other side of the outer shell 8; the diameter of the conical portion 10 is arranged to decrease in a direction away from the baffle 11, and a through hole is provided at one end of the conical portion 10 away from the baffle 11, and the inner wall of the conical portion 10 can abut against the center ball 9; a plurality of through holes are provided on the baffle 11, and the plurality of through holes are arranged at intervals along the surface of the baffle 11.

[0056] In the above embodiment, the structures of the first one-way valve 6 and the second one-way valve 7 are consistent. The first one-way valve 6 and the second one-way valve 7 are both provided with a tapered portion 10 at one end close to the water storage barrel 4, and a baffle 11 at the other end. A circular ring is provided between the tapered portion 10 and the baffle 11, and the two ends of the circular ring are respectively connected to the tapered portion 10 and the baffle 11. The circular ring can be welded to the tapered portion 10 and the baffle 11 respectively, or can be arranged as an integral part. Taking the first one-way valve 6 as an example, the conical portion 10 of the first one-way valve 6 is arranged at one end away from the second one-way valve 7, the diameter of the conical portion 10 is arranged in a decreasing manner along the direction away from the second one-way valve 7, and a through hole is arranged on the end face of the conical portion 10 away from the second one-way valve 7, the axis of the through hole on the conical portion 10 is arranged colinearly with the axis of the conical portion 10, and the diameter of the through hole on the conical portion 10 is smaller than the diameter of the center ball 9, so that when the flushing liquid wants to flow to the water storage barrel 4, the flushing liquid drives the center ball 9 to move toward the conical portion 10 until the center ball 9 abuts against the conical portion 10, at which time the center ball 9 blocks the through hole on the conical portion 10, and the flushing liquid cannot pass through the first one-way valve 6 When the flushing liquid wants to flow to the drainage component, the flushing liquid drives the central ball 9 to move toward the baffle 11. At this time, the central ball 9 leaves the inner wall of the conical portion 10, and the through hole on the conical portion 10 is opened. The flushing liquid enters the accommodating cavity through the through hole on the conical portion 10, and flows through the gap between the central ball 9 and the inner wall of the accommodating cavity, and then flows out through the through hole on the baffle 11, so that the flushing liquid can pass through the first one-way valve 6. Even when the central ball 9 is in contact with the baffle 11, the central ball 9 is spherical and still cannot resist all the through holes on the baffle 11. Therefore, the flushing liquid can still pass through the first one-way valve 6, and the second one-way valve 7 is the same, which will not be repeated.

[0057] Optionally, when the squeezing ball 1 is squeezed, the squeezing ball 1 applies positive pressure to the shell 5. At this time, the pressure in the shell 5 increases, and the flushing liquid in the shell 5 has a tendency to move to the water storage barrel 4 through the first one-way valve 6 and to the plugging tube 2 through the second one-way valve 7. At this time, the first one-way valve 6 is blocked, and the second one-way valve 7 is connected, so that the squeezing ball 1 in the squeezed state can drive the flushing liquid to enter the drainage component through the plugging tube 2, and when the squeezing ball 1 is relaxed, the squeezing ball 1 applies negative pressure to the shell 5. At this time, the pressure in the shell 5 decreases, and the flushing liquid at both ends of the shell 5 has a tendency to flow into the shell 5. At this time, the second one-way valve 7 is closed, and the first one-way valve 6 is opened, and the flushing liquid in the water storage barrel 4 can enter the shell 5 through the connecting pipe 16 and the first one-way valve 6 to replenish the flushing liquid.

[0058] In an optional embodiment, the drainage assembly includes a drainage tube 12 and a three-way tube 13; one end of the drainage tube 12 is connected to the patient's lesion, and the other end is connected to the three-way tube 13, and the three-way tube 13 is connected to the flushing assembly.

[0059] In the above embodiment, the drainage tube 12 is tubular with openings at both ends. The drainage tube 12 can be transparent. The drainage tube 12 can be made of silicone rubber or polyurethane. The end of the drainage tube 12 that extends into the patient's lesion can also have drainage holes. The drainage holes are close to the end of the drainage tube 12 and are arranged at intervals on the surface of the drainage tube 12. The drainage holes are used to improve the drainage efficiency, and the three-way tube 13 is arranged at the end of the drainage tube 12 away from the patient's lesion. The three-way tube 13 can also be made of transparent material. The three-way tube 13 can also be made of silicone rubber or polyurethane. The other end of the three-way tube 13 is used for the outflow of concentrated liquid and necrotic tissue at the lesion, and the opening in the middle position of the three-way tube 13 is used to connect the flushing tube 2, so that the flushing fluid flowing out of the flushing tube 2 can enter the drainage tube 12 through the three-way tube 13, increase the pressure in the drainage tube 12, so that the blockage at the end of the drainage tube 12 can be cleared.

[0060] Optionally, the end of the flushing tube 2 extending into the drainage tube 12 can move inside the drainage tube 12, and the flushing tube 2 can move toward the blocked part of the drainage tube 12, so that the flushing liquid flowing out from the end of the flushing tube 2 can flush the blockage in the drainage tube 12, thereby clearing the blockage in the drainage tube 12 by flushing.

[0061] Optionally, a third valve may be included. The third valve may be arranged at one end of the three-way pipe 13 away from the drainage tube 12. The third valve is in an open state during drainage and in a closed state during flushing, so as to prevent the flushing liquid from flowing out through the three-way pipe 13 when pressurized flushing liquid is added into the drainage tube 12 through the flushing pipe 2, and the pressure in the drainage tube 12 cannot be increased faster.

[0062] In an optional embodiment, it also includes a flushing tube 14 and a second valve 15; one side of the flushing tube 14 extends into the drainage assembly, one end of the flushing tube 14 is connected to the patient's lesion, and the flushing tube 14 is used to provide flushing liquid to the patient's lesion; the second valve 15 is set on the flushing tube 14, and the second valve 15 is used to control the on and off of the flushing tube 14.

[0063] In the above embodiment, the drainage tube 12 can be set as a single layer or a double layer, and pus and necrotic tissue can flow out through the pipe with the smallest diameter of the drainage tube 12, and a flushing tube 14 can be set at the interlayer of the drainage tube 12. The flushing tube 14 extends into the interlayer through the side wall of the drainage tube 12 and extends along the length direction of the drainage tube 12 until one end of the flushing tube 14 reaches the patient's lesion, and the other end of the flushing tube 14 is connected to the water storage barrel 4. The flushing liquid in the water storage barrel 4 can enter the patient's lesion through the flushing tube 14 for flushing, thereby improving the drainage efficiency. At the same time, a second valve 15 is set on the flushing tube 14, and the second valve 15 is set outside the patient's body. The second valve 15 is used to control the on and off of the flushing tube 14. The second valve 15 is opened when flushing is needed. When the drainage tube 12 is blocked, the flow rate of the flushing liquid in the flushing tube 14 can be reduced by the second valve 15, or even the flushing tube 14 can be closed to avoid excessive flushing liquid being provided to the patient's lesion to cause fluid accumulation.

[0064] Optionally, in the above connection methods, fixed connection, such as gluing, hot-melt connection, welding, etc., can be adopted, and detachable connection, such as threaded connection, plug-in, etc. can also be adopted. The above are only preferred embodiments of the utility model, and are not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A drainage device, characterized in that: It includes a drainage assembly, a flushing assembly and a one-way valve assembly; One end of the drainage component extends into the patient's lesion, and the other end extends out of the patient's body. The flushing component is connected to the drainage component, and the flushing component provides flushing liquid into the drainage component; The one-way valve assembly is connected to the flushing assembly, and the one-way valve assembly allows the flushing liquid to flow into the drainage assembly in a one-way manner.

2. The drainage device according to claim 1, characterized in that: The flushing assembly comprises a squeezing ball (1) and a flushing tube (2); The squeezing ball (1) is connected to the plugging pipe (2) via the one-way valve assembly, the plugging pipe (2) is connected to the drainage assembly, and the squeezing ball (1) transports the flushing liquid into the drainage assembly via the one-way valve assembly and the plugging pipe (2).

3. The drainage device according to claim 2, characterized in that: The flushing assembly also includes a first valve (3); The first valve (3) is arranged on the plugging pipe (2), and the first valve (3) is used to control the on and off of the plugging pipe (2).

4. The drainage device according to claim 3, characterized in that: The flushing assembly also includes a water storage bucket (4); The water storage barrel (4) is connected to an end of the one-way valve assembly away from the flushing pipe (2), and the flushing liquid is arranged in the water storage barrel (4).

5. The drainage device according to claim 1, characterized in that: The one-way valve assembly comprises a housing (5), a first one-way valve (6) and a second one-way valve (7); The first one-way valve (6) and the second one-way valve (7) are respectively arranged in the housing (5) and connected, the first one-way valve (6) and the second one-way valve (7) are arranged away from each other, and the housing (5) is connected to the flushing assembly.

6. The drainage device according to claim 5, characterized in that: The first one-way valve (6) and the second one-way valve (7) have the same structure.

7. The drainage device according to claim 6, characterized in that: The first one-way valve (6) comprises a housing (8) and a central ball (9); The outer shell (8) is arranged inside and connected to the shell body (5), the central ball (9) is arranged inside the outer shell (8), the central ball (9) is slidably connected to the outer shell (8), through holes are arranged on both sides of the outer shell (8), and the central ball (9) can block the through hole on one side of the outer shell (8).

8. The drainage device according to claim 7, characterized in that: A conical portion (10) is provided on one side of the housing (8), and a baffle (11) is provided on the other side of the housing (8); The diameter of the conical portion (10) is arranged to decrease in a direction away from the baffle (11); the through hole is provided at one end of the conical portion (10) away from the baffle (11); and the inner wall of the conical portion (10) can abut against the central ball (9); The baffle plate (11) is provided with a plurality of through holes, and the plurality of through holes are arranged at intervals along the surface of the baffle plate (11).

9. The drainage device according to claim 1, characterized in that: The drainage assembly comprises a drainage tube (12) and a three-way tube (13); One end of the drainage tube (12) is connected to the patient's lesion, and the other end is connected to the three-way tube (13), and the three-way tube (13) is connected to the flushing assembly.

10. The drainage device according to any one of claims 1 to 9, characterized in that: Also includes a flushing pipe (14) and a second valve (15); One side of the flushing tube (14) extends into the drainage assembly, one end of the flushing tube (14) is connected to the patient's lesion, and the flushing tube (14) is used to provide the flushing fluid to the patient's lesion; The second valve (15) is arranged on the flushing pipe (14), and the second valve (15) is used to control the on-off of the flushing pipe (14).

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