Multi-groove-cavity drainage device

Abstract

The utility model provides a multi-groove-cavity drainage device, and belongs to the technical field of medical instruments. The device comprises a drainage tube, a drainage middleware, a negative pressure drainage ball, a drainage bag and a guide needle. The drainage middleware comprises a multi-groove-cavity pipe joint and a three-way base, the multi-groove-cavity pipe joint can be rapidly and accurately connected with connecting pipes at the two ends through an innovative double-cavity pipe connecting structure design, a plurality of cavities in the multi-groove-cavity pipe joint are communicated, connecting operation is convenient and rapid, and sealing performance is good. According to the device, drainage and medicine injection can be carried out at the same time, blockage can be quickly dredged through the three-way base valve and the double / three-cavity valves introduced into the connecting pipes, and the infection risk caused by pipe disassembly is avoided. Meanwhile, the unique multi-groove-cavity drainage pipeline reduces the probability of pipe blocking. The device achieves great effects in the aspects of preventing the drainage tube from being blocked and solving the blocking problem, and truly achieves full-sealing drainage in the whole process of the whole pipeline.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a multi-slot cavity drainage device. BACKGROUND

[0002] In the modern medical treatment process, drainage is the key link for treating various diseases and handling postoperative conditions. But with the increasing complexity of the patient's condition, especially in some serious infectious diseases, the traditional single cavity drainage device can only draw pus, but cannot effectively flush the infection site or inject drugs for local treatment. Simple drainage cannot meet the treatment needs, and the multi-slot cavity drainage device emerges as the times require. However, the development of the multi-slot cavity drainage device (cavity groove co-constructed type) is very lagging behind, and the existing multi-slot cavity drainage device still has some problems. It is found that the technology at least has the following main technical problems:

[0003] 1. When the cavity groove co-constructed type drainage tube is used in open surgery, the drainage tube needs to be pulled out through the body puncture after the puncture needle is cut off, and then the drainage tube is connected through the conversion joint. The traditional pipe joint structure is complex, the coordination is poor, the work difficulty of medical staff is increased, and the possibility of operation error is increased, and medical disputes are easily generated in the clinical application process.

[0004] 2. In the drainage process, the traditional drainage device lacks effective anti-blocking and dredging mechanism when the drainage device often blocks blood clots and the like. If the closed pipeline is disassembled for dredging, the risk of iatrogenic cross infection is easily caused, and the drainage efficiency is affected.

[0005] 3. The current drainage tube is mostly the eliminated single cavity type round pipe or open hole flat pipe, which is easy to block the pipe or stick to the wall during drainage. The cavity of the individual multi-slot cavity drainage tube (cavity groove co-constructed type) is at the outermost of the groove, and the cavity wall is easy to be deformed and crushed under pressure, causing the infusion liquid to be not smooth. UTILITY MODEL CONTENTS

[0006] The utility model provides a multi-slot cavity drainage device for the problems of the prior art, which is improved in terms of preventing blockage and solving blockage, so that the drainage device is more convenient, fast, efficient, and the drainage efficiency and overall safety are improved.

[0007] In order to achieve the above technical purposes, the utility model adopts the following technical scheme:

[0008] A multi-slot cavity drainage device, comprising a drainage tube, a drainage intermediate part, a negative pressure drainage ball, a drainage bag and a guide needle, wherein the drainage tube is a multi-slot cavity drainage tube, one end of the drainage intermediate part is connected with the multi-slot cavity drainage tube, the other end is connected with the drainage inlet of the negative pressure drainage ball, the drainage outlet of the negative pressure drainage ball is connected with the drainage bag through a first connecting pipe, and the guide needle can be inserted into the cavity of the multi-slot cavity drainage tube;

[0009] The drainage intermediate piece comprises a multi-groove cavity pipe joint and a three-way base;

[0010] The multi-groove cavity pipe joint is provided with a first liquid injection cavity pipe and a first drainage cavity pipe on one side, and a second liquid injection cavity pipe and a second drainage cavity pipe on the other side.

[0011] The multi-groove cavity drainage pipe is internally provided with a first liquid injection cavity and a first drainage cavity.

[0012] The three-way base is provided with a multi-groove cavity drainage input pipe at the bottom, a base liquid injection cavity pipe and a base drainage output cavity pipe at the top, the drainage output cavity pipe is connected with a negative pressure drainage ball, and the multi-groove cavity drainage input pipe is internally provided with a second liquid injection cavity and a second drainage cavity.

[0013] The first liquid injection cavity pipe and the first drainage cavity pipe on one side of the multi-groove cavity pipe joint can be connected into the first liquid injection cavity and the first drainage cavity of the multi-groove cavity drainage pipe, the second liquid injection cavity pipe and the second drainage cavity pipe on the other side of the multi-groove cavity pipe joint can be connected into the second liquid injection cavity and the second drainage cavity of the multi-groove cavity drainage input pipe of the three-way base, and the multi-groove cavity drainage pipe and the multi-groove cavity drainage input pipe of the three-way base are fixedly connected to the multi-groove cavity pipe joint through the locking part of the multi-groove cavity pipe joint.

[0014] Preferably, the intermediate part of the joint is threadedly connected with the locking part.

[0015] Preferably, the opening of the first liquid injection cavity pipe and the second liquid injection cavity pipe of the multi-groove cavity pipe joint is designed as an inclined surface.

[0016] Preferably, the multi-groove cavity drainage pipe is a structure with a pipe cavity and drainage grooves, the first liquid injection cavity is located at the center of the multi-groove cavity drainage pipe, and a plurality of groove walls for supporting are arranged around the first liquid injection cavity.

[0017] Preferably, the base liquid injection cavity pipe of the three-way base is provided with a double-cavity valve with a heparin cap.

[0018] Preferably, the base liquid injection cavity pipe and the base drainage output cavity pipe of the three-way base at the top are connected in a soft connection mode.

[0019] Preferably, the base drainage output cavity pipe connected to the top of the three-way base is provided with a first three-way valve with a heparin cap.

[0020] Preferably, at least one three-way valve with a heparin cap is arranged on the first connecting pipe near the negative pressure drainage ball and near the drainage bag.

[0021] Preferably, the first liquid injection cavity pipe and the second liquid injection cavity pipe of the multi-groove cavity pipe joint are made of a high-molecular rigid pipe or a metal rigid connecting pipe.

[0022] Preferably, the multi-groove cavity drainage pipe is made of silica gel material.

[0023] Compared with the prior art, the utility model has the beneficial effects that:

[0024] 1. The drainage intermediate part is introduced at the end of the drainage pipe, the multi-groove cavity pipe joint is connected with the innovative double-cavity pipe connection structure design, can quickly and accurately connect the multi-groove cavity in the pipe and tightly fix the connecting pipe at both ends, the whole connection operation is simple, convenient, fast, safe and good in sealing performance; and through the cooperation of the three-way base valve, the liquid injection cavity can be operated in two directions at the same time during drainage, medicine liquid, flushing liquid and the like can be injected into the body, body fluid and blood can be extracted, and routine, biochemical and the like tests can be carried out; and through the push-pull suction operation of the syringe, the blocked part can be dredged, the closed pipeline does not need to be disassembled, and medical cross infection is effectively prevented.

[0025] 2. The unique multi-groove cavity drainage pipe sets the liquid injection cavity at the center position of the drainage pipe, and the inner wall of the multi-groove cavity around the liquid injection cavity is distributed around the pipe, which can provide good strength support and increase the pressure resistance, so that the cavity wall at the center position is not easily deformed due to stress and extrusion, the smoothness of the liquid injection cavity is effectively ensured, and the probability of the drainage pipe being blocked is reduced.

[0026] 3. Through the design of the double-cavity valve and the three-cavity valve added on the three-way base and the connecting pipes, when the drainage device is blocked by blood clots and the like, the blocked parts of the drainage device can be quickly and conveniently dredged through the liquid injection cavity, the closed pipeline does not need to be disassembled, the risk of medical cross infection is easily caused, and the patient's recovery is facilitated.

[0027] 4. The heparin cap is arranged on the outer cavity of all the double-cavity valves and the three-cavity valves, and the precise filter membrane is arranged on the external exhaust hole of the drainage device and the drainage bag, so that the risk of microbial pollution and medical infection is effectively prevented.

[0028] In summary, in addition to meeting the demand of drainage and medicine injection, the whole device design has achieved great results in preventing the drainage pipe from being blocked and solving the problem of blockage at all places, effectively improves the drainage efficiency, does not need to disassemble the closed pipeline in actual operation, and truly realizes the whole-seal drainage of the whole pipeline in the whole process. In addition, the design of the multi-groove cavity pipe joint and the introduction of the double / three-cavity valve make the connecting pipe operation and the blockage dredging operation convenient, fast and more cooperative. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a whole structure schematic view of the drainage device in the embodiment of the utility model;

[0030] Figure 2This is a schematic diagram of the multi-groove tube joint without the locking component in an embodiment of this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the multi-groove tube connector with a locking component in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the multi-cavity drainage tube in an embodiment of this utility model;

[0033] In the attached diagram: 1. Multi-groove drainage tube; 2. Multi-groove tube connector; 3. Guide needle; 4. Three-way base; 5. Multi-groove drainage input tube; 6. Base injection chamber tube; 7. Base drainage output chamber tube; 8. Negative pressure drainage ball; 9. First connecting tube; 10. Drainage bag; 11. Double-lumen valve with heparin cap; 12. First three-way valve with heparin cap; 13. Second three-way valve with heparin cap; 14. Third three-way valve with heparin cap; 15. First filter valve; 16. Second filter valve; 17. Stop valve; 18. Flow regulator; 19. Robert clamp; 20. Plate clamp; 21. First injection chamber tube; 22. First drainage chamber tube; 23. Second injection chamber tube; 24. Second drainage chamber tube; 25. Middle part of connector; 26. First injection chamber; 27. First drainage chamber; 28. Locking component. Detailed Implementation

[0034] The following will refer to the appendix in the embodiments of this utility model. Figures 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "one side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the appendix. Figures 1-4 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] In the utility model, unless another definite provision and limitation, the terms "mount", "arrange", "connect", "fix", "screw" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element inside communication or two element mutual action relation, unless another definite limitation, for the ordinary skill of the person of the art, can understand the specific meaning of above-mentioned terms in the utility model according to specific circumstances.

[0037] As Figure 1 Indicated, the utility model provides a kind of multi-slot cavity drainage device, including drainage tube, drainage intermediate piece, negative pressure drainage ball 8, drainage bag 10, guide needle 3, wherein drainage tube is multi-slot cavity drainage tube 1, drainage intermediate piece one end is connected with multi-slot cavity drainage tube, the other end is connected with the drainage inlet of negative pressure drainage ball, the drainage outlet of negative pressure drainage ball is connected with drainage bag by first connecting catheter 9, guide needle can be inserted into the cavity of multi-slot cavity drainage tube;

[0038] Wherein drainage intermediate piece includes multi-slot cavity pipe joint 2, three-way base 4;

[0039] Wherein the structure of multi-slot cavity pipe joint as Figure 2 Indicated, one side of multi-slot cavity pipe joint is provided with first liquid injection cavity pipe 21 and first drainage cavity pipe 22, the other side is provided with second liquid injection cavity pipe 23 and second drainage cavity pipe 24, first liquid injection cavity pipe and second liquid injection cavity pipe, first drainage cavity pipe and second drainage cavity pipe respectively penetrate the middle part 25 of joint, form two fluid passages of intercommunication, and the middle part 25 of joint is provided with locking component 28;

[0040] Wherein the structure of multi-slot cavity drainage tube as Figure 4 Indicated, first liquid injection cavity 26 and first drainage cavity 27 are arranged inside multi-slot cavity drainage tube;

[0041] Wherein the bottom of three-way base is provided with multi-slot cavity drainage input pipe 5, the upper portion of three-way base 4 is provided with base liquid injection cavity pipe 6, base drainage output cavity pipe 7, drainage output cavity pipe 7 is connected with negative pressure drainage ball 8, and the inside of multi-slot cavity drainage input pipe 5 is provided with second liquid injection cavity and second drainage cavity;Second liquid injection cavity is communicated with the upper portion of base liquid injection cavity pipe, and second drainage cavity is communicated with the upper portion of base drainage output cavity pipe;

[0042] First liquid injection cavity pipe and first drainage cavity pipe of one side of multi-slot cavity pipe joint can be connected into first liquid injection cavity and first drainage cavity of multi-slot cavity drainage tube, and second liquid injection cavity pipe and second drainage cavity pipe of the other side of multi-slot cavity pipe joint can also be connected into second liquid injection cavity and second drainage cavity of the bottom of multi-slot cavity drainage input pipe of three-way base.

[0043] Figure 2 and 3 An embodiment of the multi-lumen tube connector is shown, wherein Figure 2 An embodiment of the structure of the middle part of the connector 25 is shown, wherein Figure 3 An embodiment of the structure of the middle part of the connector 25 is shown, wherein

[0044] As Figure 2 shown, in some embodiments of the utility model, the opening of the liquid injection lumen of the multi-lumen tube connector is designed as an inclined surface to facilitate tube insertion, preferably cut off from the 1 / 3 of the circular cross section of the tube along a 45° inclined surface. The inclined lumen facilitates quick and convenient insertion into the multi-lumen drainage tube during clinical use.

[0045] In some embodiments of the utility model, the liquid injection lumen at both ends of the multi-lumen tube connector is a high-molecular rigid tube or a metal rigid connecting tube, preferably a medical-grade metal rigid tube such as a medical-grade stainless steel tube. The multi-lumen drainage tube is generally made of silicone material and has elasticity, which facilitates the fitting of the rigid high-molecular material tapered tube connector to ensure airtightness.

[0046] In some embodiments of the utility model, the middle part 25 of the connector and the locking component 28 fitted outside it can be connected by threads, the inner wall of the locking component is provided with internal threads, and the outer wall of the middle part of the connector is provided with external threads. The locking component is fitted on the middle part of the connector, and the threads are engaged with each other when tightened, which can lock and fix the connected multi-lumen drainage tube 1 and the multi-lumen drainage input tube 5 at the bottom of the three-way base. At the same time, the locking component can wrap the connection position of the middle part of the connector and the two connecting tubes, which also ensures the sealing of the connection part.

[0047] In summary, the structure of the multi-lumen tube connector ensures the close communication between the drainage lumen and the liquid injection lumen between the two tubes, and guarantees the sealing and liquid-tightness. At the same time, during the actual drainage operation, the drainage tube is pulled out through the body puncture, and after the puncture needle is cut off, the liquid injection lumen and the drainage lumen of the two tubes can be quickly and accurately connected through the multi-lumen tube connector, which is convenient, quick, safe, and airtight.

[0048] In some embodiments of the utility model, the multi-groove cavity drainage tube is a co-constructed structure of a tube cavity and a drainage groove. The liquid injection cavity is arranged at the center position of the drainage tube, and the liquid injection cavity is surrounded by the inner wall of the multi-groove wall. It can provide good strength support and increase the pressure resistance. Thus, the cavity wall arranged at the center position of the drainage tube is not easily deformed due to stress and pressure, effectively ensuring the smoothness of the liquid injection cavity. The inner wall of the drainage tube is a spiral rotating groove, which can effectively prevent the linear groove from being easily attached to the wall and blocking the drainage groove opening, thereby preventing or reducing the drainage volume. At the same time, the strength of the drainage tube body can be enhanced, and the risk of blockage of the linear drainage tube due to easy adhesion to the wall and easy compression can be greatly reduced.

[0049] In some embodiments of the utility model, the three-way base is provided with a double-cavity valve 11 with a heparin cap on the base liquid injection cavity tube. The heparin cap injection hole can be used to inject medicine, flush liquid or contrast medium into the body, and can also be used to extract body fluid, exudate or blood for routine, biochemical, cytological and immunological tests. The syringe can be used for push-pull suction operation to dredge the blocked part without disassembling the sealed pipeline, thereby effectively preventing iatrogenic cross infection.

[0050] In some embodiments of the utility model, the base liquid injection cavity tube and the base drainage output cavity tube at the top of the three-way base adopt a soft connection mode such as a silica gel tube. The advantage is that during clinical use, the drainage tube will not be pulled due to the operation of the above-mentioned cavity tube, thereby increasing the pain of the patient. Especially for the drainage of the cranial ventricle and the spine, during clinical use, the height of the drainage tube may fluctuate due to pulling, thereby causing the corresponding change of the pressure difference, the change of the designed drainage volume according to the patient's condition, and the risk to the patient's life.

[0051] In some embodiments of the utility model, the base drainage output cavity tube connected to the upper part of the three-way base is provided with a first three-way valve 12 with a heparin cap. The drainage cavity valve switch can control the drainage liquid flow. In addition, the cavity with a heparin cap can be used to suck through the heparin cap with a syringe when encountering a blocked pipe such as a blood clot during clinical use, thereby quickly dredging the blocked drainage tube.

[0052] In some embodiments of the utility model, at least one three-way valve with a heparin cap is arranged on the first connecting pipe between the negative pressure drainage ball and the drainage bag, close to the negative pressure drainage ball and close to the drainage bag. Figure 1 In some embodiments of the utility model, a second three-way valve 13 and a third three-way valve 14 with a heparin cap are arranged between the drainage ball and the drainage bag. When a blood clot or other blocked pipe appears between the drainage ball and the drainage bag, the connecting pipe does not need to be disassembled, and the syringe can pass through the injection hole with a heparin cap to push and pull to dredge the blocked part. A piece of clamp 20 is arranged on the first connecting pipe at the lower end of the negative pressure drainage ball.

[0053] In some embodiments of the utility model, the drainage output cavity pipe connected to the upper part of the three-way base is provided with a flow regulator 18, which can open and close the valve and control the size and speed of the drainage flow through the flow regulator

[0054] In some embodiments of the utility model, the negative pressure drainage ball is preferably a negative pressure drainage ball processed from liquid silicone, which has good biocompatibility and high transparency, facilitating observation of pressure fluctuations in the body (such as the brain). The drainage ball can be switched to normal pressure and negative pressure drainage as needed, which is beneficial to the drainage requirements during surgery. For example, normal pressure or negative pressure drainage can be selected arbitrarily before craniotomy, during surgery, after surgery, or when puncture drainage is performed for cerebral hemorrhage. This is particularly beneficial to the solution of the problem of clogging of the drainage tube during normal pressure puncture drainage of the lateral ventricle. When clogging occurs, the tube does not need to be disassembled, and negative pressure can be generated directly through the drainage ball to re-channel, or a syringe can be used in combination with the cavity of the first three-way valve to aspirate, thereby more quickly unblocking the blocked parts such as blood clots.

[0055] In some embodiments of the utility model, the negative pressure drainage ball is provided with an air vent at the upper end, and the air vent is provided with a first filter valve 15 at the end. The air vent with the filter valve can prevent microbial contamination and iatrogenic cross infection when the ball generates negative pressure, and can maintain the consistency of the pressure inside and outside the drainage system when normal pressure drainage is required, thereby preventing pollution of the cerebrospinal fluid and infection caused by backflow to the brain during craniocerebral drainage. A Robert clamp 19 is arranged on the pipeline of the air vent.

[0056] In some embodiments of the utility model, the drainage bag is provided with an air vent, and the air vent is provided with a second filter valve 16 at the end. The air vent can be used to release pressure and prevent the bag from swelling. The air vent is preferably provided with a nanoscale microporous precision filter membrane, which can filter and block microorganisms in the air to prevent infection caused by backflow of the drainage fluid after external microbial pollution.

[0057] In some embodiments of the utility model, a guide needle can be inserted into the cavity of the drainage tube, and the guide needle is preferably a medical stainless steel woven guide needle or a medical stainless steel needle. One end of the guide needle is designed in a spherical shape and is slightly shorter than the drainage tube to prevent the guide needle from penetrating into human tissue. This design solves the problem that the drainage tube without the support of the guide needle cannot reach the part to be drained due to its softness during the clinical minimally invasive interventional surgery or postoperative drainage. Through the guidance of the supporting guide needle, the drainage tube quickly reaches the part to be drained of the patient through the interventional incision or the laparoscope surgical channel.

[0058] In some embodiments of the utility model, the multi-groove cavity drainage tube is made of liquid silicone with better biocompatibility, and the X-ray developing line of the tube body facilitates accurate determination of the catheter position through developing during clinical use.

[0059] In some embodiments of the utility model, the middle transition area of groove structure to double cavity structure of multi-groove cavity drainage tube is provided with scale, the scale can be divided into single face, double face, multi face, surround type etc. The scale can be scale, dot, square block etc. Mark, clinical operation is convenient, is favorable to multi angle observation, controls the flow of drainage. In addition, when operating, can prevent the drainage tube part from being pulled out of the body, thereby causing the risk of unable to drain due to pressure loss.

[0060] It can be seen from the embodiments of the utility model that the heparin cap is arranged on the external cavity of all double cavity valves and triple cavity valves, the external exhaust hole on the drainage device and drainage bag is provided with a precision filter membrane, which effectively prevents microbial contamination and iatrogenic infection risk; at the same time, when the drainage device is blocked by blood clots, through the design of the three-way base and the double cavity valve and triple cavity valve added on each connecting conduit, the blocked parts of the drainage device can be quickly and conveniently dredged through the liquid injection cavity, the closed pipeline is avoided to be disassembled, the risk of iatrogenic cross infection is easily caused, and the patient is beneficial to recovery; and the unique multi-groove cavity drainage tube structure design, the liquid injection cavity is arranged at the center position of the drainage tube, the drainage tube is prevented from being pressed and deformed due to stress, the smoothness of the liquid injection cavity is guaranteed to the maximum extent, and the probability of drainage tube blockage is reduced. The drainage device of the utility model has achieved great results in preventing drainage blockage and solving blockage, and realizes full-sealed drainage in the whole pipeline process.

[0061] The above only describes the embodiments of the utility model and does not limit the utility model. Any modification, equivalent replacement and improvement within the application range of the utility model should be included in the protection range of the utility model.

Claims

1. A multi-slot cavity drainage device, comprising a drainage tube, a drainage intermediate, a negative pressure drainage ball, a drainage bag, a guide needle, characterized in that: The drainage tube is a multi-slot cavity drainage tube, one end of the drainage intermediate part is connected with the multi-slot cavity drainage tube, the other end is connected with the drainage inlet of the negative pressure drainage ball, the drainage outlet of the negative pressure drainage ball is connected with the drainage bag through a first connecting catheter, and the guide needle can be inserted into the cavity of the multi-slot cavity drainage tube. The drainage intermediate part includes a multi-slot cavity pipe joint and a three-way base. One side of the multi-slot cavity pipe joint is provided with a first liquid injection cavity pipe and a first drainage cavity pipe, and the other side is provided with a second liquid injection cavity pipe and a second drainage cavity pipe. The multi-slot cavity drainage tube is internally provided with a first liquid injection cavity and a first drainage cavity. The bottom of the three-way base is provided with a multi-slot cavity drainage input pipe, the upper part of the three-way base is provided with a base liquid injection cavity pipe and a base drainage output cavity pipe, the drainage output cavity pipe is connected with the negative pressure drainage ball, and the multi-slot cavity drainage input pipe is internally provided with a second liquid injection cavity and a second drainage cavity. The first liquid injection cavity pipe and the first drainage cavity pipe on one side of the multi-slot cavity pipe joint can be inserted into the first liquid injection cavity and the first drainage cavity of the multi-slot cavity drainage tube, the second liquid injection cavity pipe and the second drainage cavity pipe on the other side of the multi-slot cavity pipe joint can be inserted into the second liquid injection cavity and the second drainage cavity of the multi-slot cavity drainage input pipe of the three-way base, and the multi-slot cavity drainage tube and the multi-slot cavity drainage input pipe of the three-way base are fixedly connected to the multi-slot cavity pipe joint through the locking part of the multi-slot cavity pipe joint.

2. A multi-lumen drainage device according to claim 1, wherein: The intermediate part of the joint is threadedly connected with the locking part.

3. The multi-lumen drainage device of claim 1, wherein: The openings of the first liquid injection cavity pipe and the second liquid injection cavity pipe of the multi-slot cavity pipe joint are designed as inclined surfaces.

4. The multi-lumen drainage device of claim 1, wherein: The multi-slot cavity drainage tube is a structure in which a pipe cavity and a drainage groove are constructed together, the first liquid injection cavity is located at the center of the multi-slot cavity drainage tube, and the periphery of the first liquid injection cavity is provided with a plurality of groove walls for supporting the inner part.

5. The multi-lumen drainage device of claim 1, wherein: The base liquid injection cavity pipe of the three-way base is provided with a double-cavity valve with a heparin cap.

6. The multi-lumen drainage device of claim 1, wherein: The base liquid injection cavity pipe and the base drainage output cavity pipe of the three-way base at the top are connected in a soft connection mode.

7. The multi-lumen drainage device of claim 1, wherein: The base drainage output cavity pipe connected to the upper part of the three-way base is provided with a first three-way valve with a heparin cap.

8. The multi-lumen drainage device of claim 1, wherein: At least one three-way valve with a heparin cap is arranged on the first connecting catheter close to the negative pressure drainage ball and close to the drainage bag.

9. The multi-lumen drainage device of claim 1, wherein: The first liquid injection cavity pipe and the second liquid injection cavity pipe of the multi-slot cavity pipe joint are made of a high-molecular rigid pipe or a metal rigid connecting pipe.

10. The multi-lumen drainage device of claim 1, wherein: The material of the multi-slot cavity drainage tube is silica gel.

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