CN212490972U

CN212490972U - Irrigation and drainage double-cavity tube for neurosurgery

Info

Publication number: CN212490972U
Application number: CN202020281983.1U
Authority: CN
Inventors: 赵洲洋; 廖勤明; 马跃; 陈雯
Original assignee: Third Affiliated Hospital Of Southern Medical University
Current assignee: Third Affiliated Hospital Of Southern Medical University
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2021-02-09
Anticipated expiration: 2030-03-09

Abstract

The utility model relates to the technical field of medical appliances, and a neurosurgery washes drainage double lumen pipe is disclosed, including being the pipe body of "Y" type, this internal baffle that is provided with of pipe, the one end fixed connection of baffle is in the branching department of "Y" type, the one end of the branching department of "Y" type is kept away from to the other end fixed connection of baffle at the pipe body, the baffle is divided into the drainage chamber that is used for the drainage with the pipe body inner chamber and is used for pouring into the chamber that washes of medicine, the width in drainage chamber is greater than the width that washes the chamber, drainage chamber and puncture guide needle phase-match. By the arrangement, the neurosurgery flushing and drainage double-cavity tube realizes the separation of drainage and flushing, continuously flushes and drains, improves the cure rate, and has the advantages of simple structure, convenient operation and convenient clinical popularization; solves the problems that the drainage tube used in the existing neurosurgery operation is a single-cavity tube, the infection risk is easily increased, the disease course of a patient is prolonged, and even the life is threatened.

Description

Irrigation and drainage double-cavity tube for neurosurgery

Technical Field

The application relates to the technical field of medical appliances, in particular to a neurosurgery irrigation and drainage double-cavity tube.

Background

In neurosurgery operations such as intracranial hematoma removal operation and cerebral abscess removal operation, drainage tubes are often kept after the operation to discharge hematocele, hydrops or empyema in an operation area, and the single-cavity drainage tubes are mostly used at present; or the ventricular external drainage needs drilling drainage, and a single-cavity drainage tube is also used. After operation, the doctor can inject medicines such as antibiotics and urokinase or physiological saline into the operation cavity or the ventricle of part of patients for flushing according to the condition of the patient. In order to solve the problem, a method commonly used by clinicians is to inject medicine from the drainage tube with a single cavity, but because partial drainage fluid is remained in the drainage tube, the medicine is injected while partial drainage fluid flows back to the cranium, so that the infection risk is increased with a certain probability, the course of disease of a patient is prolonged, and even the life of the patient is threatened.

Therefore, how to solve the problems that the drainage tube used in the existing neurosurgery is a single-lumen tube, which is easy to increase the infection risk, prolong the disease course of a patient and even endanger the life in the drainage and flushing process is a key technical problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the related art at least to a certain extent, the present application aims to provide a neurosurgical irrigation and drainage double-lumen tube, which can solve the problems that the drainage tube used in the existing neurosurgical operation is a single-lumen tube, so that the infection risk is easily increased, the course of a patient is prolonged, and even the patient is life-threatening.

The application provides a neurosurgery washes drainage double lumen pipe, including the pipe body that is "Y" type, this internal baffle that is provided with of pipe, the one end fixed connection of baffle is in the branching department of "Y" type, the other end fixed connection of baffle is in the pipe body is kept away from the one end of the branching department of "Y" type, the baffle will the pipe body inner chamber divide into the drainage chamber that is used for the drainage and the chamber that washes that is used for injecting into the medicine, the width in drainage chamber is greater than wash the width in chamber, just drainage chamber and puncture guide needle phase-match.

Preferably, one end of the tube body, which is far away from the Y-shaped bifurcation, is provided with a first opening communicated with the drainage cavity and a second opening communicated with the flushing cavity, the first opening is positioned on the end surface of the tube body, the width of the first opening is smaller than that of the drainage cavity, the second opening is positioned on the side wall, which is far away from the partition plate, of the flushing cavity and is parallel to the partition plate, and the second opening is arranged close to one end, which is far away from the Y-shaped bifurcation, of the tube body.

Preferably, the corners of the partition board, the drainage cavity and the flushing cavity are passivated and smoothed.

Preferably, the drainage chamber with wash the chamber and keep away from all be provided with a plurality of through-holes on the lateral wall of baffle, a plurality of through-holes are close to the pipe body is kept away from the one end setting of "Y" type bifurcation department.

Preferably, the outer wall of the pipe body is provided with scale marks, and the scale marks extend along the extending direction of the pipe body.

Preferably, the partition is provided with a developing line extending along an extending direction of the partition.

Preferably, three developing balls are arranged on the developing line, and the distances between the three developing balls and one end, far away from the Y-shaped branch, of the tube body are respectively 1.5cm, 5cm and 10 cm.

Preferably, the baffle is located at a quarter of an inner diameter line of a circle on the cross section of the tube body.

Preferably, the second opening is circular or elliptical.

Preferably, the drainage chamber is kept away from first open-ended one end detachably is connected with the drainage tube, it keeps away from to wash the chamber second open-ended one end detachably is connected with the flushing pipe, drainage tube detachably is connected with first three way valve, two other interfaces of first three way valve are connected with the extension pipe and the first heparin cap that are connected with the drainage bag through the screw thread respectively, flushing pipe detachably is connected with second three way valve, two other interfaces of second three way valve are connected with infusion pipeline and second heparin cap through the screw thread respectively.

The technical scheme provided by the application can comprise the following beneficial effects:

the application provides a neurosurgery washes drainage double lumen pipe, including the pipe body that is "Y" type, this internal baffle that is provided with of pipe sets the drainage chamber that is used for the drainage and the chamber that washes that is used for injecting into the medicine to the drainage chamber and puncture guide needle phase-match, so that puncture guide needle stretches into the drainage intracavity and punctures. When the puncture guiding needle is used, for a patient needing puncture, such as ventricular puncture, the puncture guiding needle is firstly placed into the drainage cavity to puncture according to the conventional operation and then taken out, and for a patient not needing puncture, the flushing drainage double-cavity tube is directly placed into an exposed operation cavity in the operation without using the puncture guiding needle. The operation is consistent, namely the flushing and drainage double-cavity tube is fixed, and then the drainage tube and the flushing tube are respectively connected to conduct drainage and flushing work, so that the separation of drainage and flushing is realized, the flushing and the drainage are continuously carried out, the cure rate is improved, and the problems that the infection risk is easily increased, the disease course of a patient is prolonged and even the life is threatened in the drainage and flushing process of the drainage tube used in the existing neurosurgery are solved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of a neurosurgical irrigation drainage dual lumen tube shown in accordance with some exemplary embodiments;

FIG. 2 is a plan view of a neurosurgical irrigation drainage dual lumen tube shown in accordance with some exemplary embodiments;

FIG. 3 is a cross-sectional view of a neurosurgical irrigation drainage dual lumen tube shown in accordance with some exemplary embodiments;

FIG. 4 is a perspective view of a puncture guide needle shown in accordance with some exemplary embodiments;

FIG. 5 is a plan view of a puncture guide needle shown in accordance with some exemplary embodiments;

FIG. 6 is a cross-sectional view of a penetration guide needle shown in accordance with some exemplary embodiments;

FIG. 7 is a diagram illustrating the effect of a main lumen placement puncture guide needle of a neurosurgical irrigation and drainage dual lumen tube, according to some exemplary embodiments;

FIG. 8 is a diagram illustrating the effect of a neurosurgical irrigation and drainage dual lumen catheter connecting a drainage bag to an irrigation bag, according to some exemplary embodiments.

In the figure:

1. a drainage lumen; 2. flushing the cavity; 3. a partition plate; 4. a first opening; 5. a second opening; 6. a first three-way valve; 7. a second three-way valve; 8. a puncture guide needle; 9. scale lines; 10. buckling; 11. a third developing ball; 12. a second developing ball; 13. a first developing ball; 14. a through hole; 15. a first heparin cap; 16. developing lines; 17. a second heparin cap.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus or methods consistent with aspects of the present application.

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1-8, the present embodiment provides a neurosurgery irrigation and drainage double-lumen tube, which comprises a tube body in a "Y" shape, a partition plate 3 is arranged in the tube body, the partition plate 3 divides the inner cavity of the tube body into a drainage cavity 1 and a flushing cavity 2, the drainage cavity 1 is used for drainage to lead out hematocele, hydrops or empyema in the operation cavity or the ventricle, and the flushing cavity 2 is used for injecting medicine to inject the medicine into the operation cavity or the ventricle, thereby treating or flushing the operation cavity or the ventricle. When in use, for the patient needing puncture, such as ventricular puncture, the puncture guide needle 8 is firstly placed into the drainage cavity 1 to puncture according to the conventional operation and then the puncture guide needle 8 is taken out, and for the patient not needing puncture, the flushing drainage double-cavity tube is directly placed into the exposed operation cavity in the operation without using the puncture guide needle 8. The operation is consistent, namely the flushing and drainage double-cavity tube is fixed, and then the drainage tube and the flushing tube are respectively connected to conduct drainage and flushing work, so that the separation of drainage and flushing is realized, the flushing and drainage are continued, and the cure rate is improved.

It should be noted that one end of the partition board 3 is fixedly connected to the Y-shaped bifurcation, and the other end is fixedly connected to the end of the tube body away from the Y-shaped bifurcation, that is, the partition board 3 separates the inner cavity of the straight section of the tube body, and is respectively communicated with the two bifurcated cavities located at the Y-shaped bifurcation to form a drainage cavity 1 and a flushing cavity 2.

Wherein, as shown in fig. 7, the drainage cavity 1 is matched with the puncture guiding needle 8, namely, the shape, width and length of the drainage cavity 1 are matched with those of the puncture guiding needle 8. Here, the shape and the width of drainage chamber 1 are the same with the shape and the width of puncture guide needle 8, and the length of drainage chamber 1 equals with the length of the sharp-end of puncture guide needle 8 to buckle 10 on puncture guide needle 8, so that the sharp-end of puncture guide needle 8 can be located at the tip of drainage chamber 1 just, thereby can puncture ventricles of brain or other art chamber, and buckle 10 card can avoid puncture guide needle 8 to break through the one end of the pipe body department of keeping away from "Y" type branching (prevent that puncture guide needle 8 from breaking through first opening 4 of drainage chamber 1 promptly) at the end of drainage chamber 1 (keep away from the one end of pipe body straightway promptly).

And, the width in drainage chamber 1 is greater than the width that washes chamber 2, like this, can avoid drainage chamber 1 to be blockked up by semi-solid state drainage liquid and unable drainage, also can avoid simultaneously washing the operation time because drainage chamber 1 undersize makes the speed of washing be greater than the speed of drainage, causes the piling up of flush fluid to appear.

By the arrangement, the neurosurgery flushing and drainage double-cavity tube realizes the separation of drainage and flushing, continuously flushes and drains, improves the cure rate, and has the advantages of simple structure, convenient operation and convenient clinical popularization; solves the problems that the drainage tube used in the existing neurosurgery operation is a single-cavity tube, the infection risk is easily increased, the disease course of a patient is prolonged, and even the life is threatened.

In the preferred scheme of this embodiment, as shown in fig. 1, the one end of the pipe body far away from the Y-shaped bifurcation is provided with a first opening 4 and a second opening 5, the first opening 4 is communicated with the drainage cavity 1, and the second opening 5 is communicated with the flushing cavity 2, so that the objects to be discharged in the operation cavity or the ventricle can enter the drainage cavity 1 through the first opening 4 and then be led out, and the liquid medicine can enter the operation cavity or the ventricle through the flushing cavity 2 from the second opening 5.

Wherein, in order to prevent that the puncture guiding needle 8 breaks through the first opening 4 when puncturing is carried out, thereby causing the puncture to be too large or damaging other parts, the width of the first opening 4 is made to be smaller than the width of the drainage cavity 1, thereby being capable of preventing the puncture guiding needle 8 from breaking through the first opening 4 and causing accidents in the operation.

As shown in FIG. 1, the second opening 5 is disposed in the side wall of the washing chamber 2 and is located in the side wall of the washing chamber 2 remote from the partition 3, so that the injected drug is prevented from directly entering the drainage chamber 1 from the first opening 4 of the drainage chamber 1 and being discharged through the drainage chamber 1. And the second opening 5 is arranged in parallel with the partition plate 3, so that the side wall opening faces to the puncture direction in the process of puncturing the ventricle or the operative cavity, thereby preventing unnecessary scraping and rubbing of brain tissues and blockage of the flushing cavity 2 by the scraped brain tissues.

Here, the second opening 5 may be provided in a circular or elliptical shape, and the diameter length may be provided in 5 mm.

In this embodiment, the equal passivation smooth processing in drainage chamber 1 of baffle 3 and pipe body and the contained angle department that washes chamber 2, baffle 3 and drainage chamber 1 and the handing-over department angulation that washes chamber 2 promptly, this angle has carried out passivation smooth processing, sets up like this, avoids the drainage liquid to produce at sharp-pointed angle department and detains to avoid semisolid state drainage thing like the formation of clot, avoid blockking up the drainage tube.

In some embodiments, as shown in fig. 1, a plurality of through holes 14 are disposed on the side walls of the drainage cavity 1 and the flushing cavity 2 far from the partition board 3, the through holes 14 are disposed near one end of the tube body far from the Y-shaped bifurcation, that is, the through holes 14 are disposed on the straight line segment of the tube body, and the through holes 14 are disposed near one end of the straight line segment far from the Y-shaped bifurcation, so that the through holes 14 are disposed near the first opening 4 and the second opening 5, thereby enlarging the diffusion range of the medicine injected into the flushing cavity 2, and simultaneously enabling the drainage cavity 1 to drain smoothly.

Wherein, a plurality of through holes 14 are distributed on the side wall of the tube body between one end of the tube body far away from the Y-shaped branch and the position 1.5cm away from the end. And the diameters (widths) of the through holes 14 on the drainage cavity 1 and the washing cavity 2 are respectively smaller than the inner diameters (widths) of the drainage cavity 1 and the washing cavity 2. In the operation indication that the hematoma amount is more than 30ml or the diameter of the brain abscess is more than 2.5cm, the 1.5cm part of the front end of the tube body (i.e. the end of the tube body far away from the Y-shaped bifurcation) can be completely placed into the operation cavity or the lateral ventricle, and the through hole 14 can not be exposed in the normal brain tissue to cause ineffective medicine injection.

In this embodiment, as shown in fig. 2, the tube body is provided with scale lines 9, and the scale lines 9 extend along the extending direction of the tube body, so that the medical personnel can estimate the depth of the flushing and drainage double-lumen tube inserted into the operation cavity or the ventricle.

In the present embodiment, as shown in fig. 1, the partition 3 is provided with the developing line 16, and the developing line 16 extends along the extending direction of the partition 3, specifically, the length of the developing line 16 may be set to be equal to the length of the partition 3, and the developing line 16 may be set at the center of the partition 3, so as to judge the position of the drainage tube again in the post-operation imaging examination.

Further, three developing balls are arranged on the developing line 16, the distances between the three developing balls and one end of the tube body far away from the Y-shaped branch can be respectively 1.5cm, 5cm and 10cm, the three developing balls are respectively a first developing ball 13, a second developing ball 12 and a third developing ball 11, of course, other values can be set, and the setting can be specifically carried out according to actual needs. Thus, the position of the through hole 14 can be conveniently judged by referring to the position of the developing ball during imaging examination after operation.

The diameter of the developing line 16 may be 0.5mm, and the diameter of the developing ball may be 1mm, but of course, other values may be used, and the values may be specifically set as necessary.

In this embodiment, as shown in fig. 3, the partition plate 3 is located at one fourth of the inner diameter line of the circle on the cross section of the tube body, so that the partition plate 3 divides the inner cavity of the tube body into a large cavity and a small cavity, the large cavity is the drainage cavity 1, and the small cavity is the flushing cavity 2. And 3 perpendicular to the cross section of the pipe body of baffle, guaranteed like this that the width that is located drainage chamber 1 and washing chamber 2 of pipe body straightway is even to avoid drainage chamber 1 or washing 2 inside width oversize or undersize and cause the jam.

It should be noted that the partition plate 3 may also be located at one third of the inner diameter line of the circle on the cross section of the tube body or other positions, and only the partition plate 3 needs to divide the inner cavity of the tube body into a large cavity and a small cavity.

In this embodiment, as shown in fig. 8, the tube body is equivalent to a three-way pipe, the drainage chamber 1 located in the Y-shaped branch section is detachably connected with a drainage tube, the flushing chamber 2 located in the Y-shaped branch section is detachably connected with a flushing tube, the drainage tube is provided with a detachable first three-way valve 6, and the flushing tube is provided with a detachable second three-way valve 7.

Wherein, the other two interfaces of the first three-way valve 6 are both provided with threads, one of the interfaces can be connected with an extension tube, one end of the extension tube far away from the first three-way valve 6 is connected with a drainage bag, and the extension tube and the drainage bag are both the existing extension tube and the drainage bag, so that drainage materials led out from an operation cavity or a ventricle enter the drainage bag; another interface of first three way valve 6 can be connected with first heparin cap 15, and the screw thread on this interface and the screw thread phase-match of first heparin cap 15 to make first heparin cap 15 can connect on first three way valve 6, like this, to the patient of ventricles of brain drainage, can prick through first heparin cap 15 extraction with current needle tubing and carry out the chemical examination from the cerebrospinal fluid of drainage chamber drainage.

The other two interfaces of the second three-way valve 7 are also provided with threads, and one interface can be connected with the interface of the existing transfusion pipeline so as to conveniently inject medicine into the drainage cavity 1 and further inject medicine into the operation cavity or the ventricle; the other interface can be connected with the second heparin cap 17, and the thread of the interface is matched with the thread of the second heparin cap 17, so that the second heparin cap 17 is connected with the interface, that is, the second heparin cap 17 can be used for sealing when a plurality of medicines are not needed to be used for flushing or injected with medicines simultaneously, or the second heparin cap 17 can be directly punctured through a needle tube and the like to inject the inside of the flushing tube or another infusion pipeline is connected with the interface to continuously flush the inside of the flushing tube when the medicines are needed to be injected or flushed.

In this embodiment, the length of the straightway of the tube body can be 15cm, the lengths of the drainage cavity 1 and the washing cavity 2 of the Y-shaped bifurcation of the tube body can be 8cm, the wall thickness of the tube body can be 0.3mm, the thickness of the partition plate 3 can be 0.3mm, the maximum width of the drainage cavity 1 positioned on the straightway can be 3mm, and the maximum width of the washing cavity 2 positioned on the straightway can be 1 mm. The inner diameter of the first opening 4 may be 2 mm.

In addition, in order to be used with the double lumen tube, the puncture guide needle 8 may be selected from: a puncture guide needle 8 of a hard metal material with a length of 25cm, as shown in fig. 6, and a cross-sectional shape of "D" is the same as the shape of the drainage lumen 1, and a maximum width of 3mm is the same as the width of the drainage lumen 1, i.e., the puncture guide needle 8 can be just inserted into the drainage lumen 1.

As shown in fig. 5, the tip (h end) of the puncture guide needle 8 is a cambered surface, and the diameter of the cambered surface is the same as the inner diameter of the first opening 4, so that the puncture guide needle 8 is just embedded and fixed at the first opening 4 of the drainage lumen 1. As shown in fig. 4 and 5, a cuboid or square buckle 10 is disposed at one end of the puncture guide needle 8 away from the tip, and the width of the buckle 10 is greater than the width of the drainage cavity 1, so that when the tip of the puncture guide needle 8 is just embedded in the first opening 4 of the drainage cavity 1, the buckle 10 just abuts against the tail end of the drainage cavity 1 (i.e. the end of the drainage cavity 1 away from the straight line segment), thereby further preventing the puncture guide needle 8 from breaking through the first opening 4.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. The utility model provides a neurosurgery washes drainage double lumen pipe, its characterized in that, including being the pipe body of "Y" type, this internal baffle (3) that is provided with of pipe, the one end fixed connection of baffle (3) is in the branching department of "Y" type, the other end fixed connection of baffle (3) is in the pipe body is kept away from the one end of the branching department of "Y" type, baffle (3) will pipe body inner chamber divide into drainage chamber (1) that are used for the drainage and wash chamber (2) that are used for infusing the medicine, the width in drainage chamber (1) is greater than wash the width in chamber (2), just drainage chamber (1) and puncture guide needle (8) phase-match.

2. The neurosurgical irrigation and drainage double-lumen tube is characterized in that one end of the tube body, which is far away from the Y-shaped bifurcation, is provided with a first opening (4) communicated with the drainage cavity (1) and a second opening (5) communicated with the irrigation cavity (2), the first opening (4) is positioned on the end surface of the tube body, the width of the first opening (4) is smaller than that of the drainage cavity (1), the second opening (5) is positioned on the side wall of the irrigation cavity (2), which is far away from the clapboard (3) and is parallel to the clapboard (3), and the second opening (5) is positioned close to one end of the tube body, which is far away from the Y-shaped bifurcation.

3. The neurosurgical irrigation and drainage double lumen tube according to claim 1, wherein the partition plate (3) and the corners of the drainage lumen (1) and the irrigation lumen (2) are both bluntly and smoothly treated.

4. The neurosurgical irrigation and drainage double-lumen tube is characterized in that a plurality of through holes (14) are formed in the side walls of the drainage cavity (1) and the irrigation cavity (2) far away from the partition plate (3), and the plurality of through holes (14) are formed close to one end, far away from the Y-shaped bifurcation, of the tube body.

5. The neurosurgical irrigation and drainage double lumen tube according to claim 1, wherein graduation lines (9) are arranged on the outer wall of the tube body, and the graduation lines (9) extend along the extension direction of the tube body.

6. The neurosurgical irrigation and drainage dual lumen tube according to claim 1, wherein a visualization line (16) is provided on the septum (3), the visualization line (16) extending in the extension direction of the septum (3).

7. The neurosurgical irrigation and drainage double lumen tube according to claim 6, wherein three visualization balls are arranged on the visualization line (16), and the distances between the three visualization balls and one end of the tube body far away from the Y-shaped branch are respectively 1.5cm, 5cm and 10 cm.

8. The neurosurgical irrigation and drainage dual lumen tube according to claim 1, wherein the baffle (3) is located at one quarter of the inner diameter line of a circle on the cross section of the tube body.

9. The neurosurgical irrigation and drainage dual lumen tube according to claim 2, wherein the second opening (5) is circular or elliptical.

10. The neurosurgical irrigation and drainage double-lumen tube according to claim 2, wherein a drainage tube is detachably connected to one end of the drainage cavity (1) far away from the first opening (4), a flushing tube is detachably connected to one end of the flushing cavity (2) far away from the second opening (5), a first three-way valve (6) is detachably connected to the drainage tube, the other two interfaces of the first three-way valve (6) are respectively connected with an extension tube connected with a drainage bag and a first heparin cap (15) through threads, a second three-way valve (7) is detachably connected to the flushing tube, and the other two interfaces of the second three-way valve (7) are respectively connected with an infusion pipeline and a second heparin cap (17) through threads.