CN106512112B

CN106512112B - Drainage system for body cavity effusion

Info

Publication number: CN106512112B
Application number: CN201611104228.0A
Authority: CN
Inventors: 胡育新; 王东; 王猛; 庄明强; 王方道
Original assignee: Shanghai Boshirui Life Technology Co ltd
Current assignee: Shanghai Boshirui Life Technology Co ltd
Priority date: 2016-12-05
Filing date: 2016-12-05
Publication date: 2023-06-16
Anticipated expiration: 2036-12-05
Also published as: CN106512112A

Abstract

The invention discloses a body cavity effusion drainage system, which comprises a drainage tube, an extension tube communicated with one end of the drainage tube, and a negative pressure drainage device communicated with the extension tube, wherein a puncture device is arranged on the other end of the drainage tube in a penetrating way, the body cavity effusion drainage system also comprises an injector, and the injector comprises: a head; the cylinder body is provided with an inner cavity; the core rod is arranged in the inner cavity in a sliding way and is provided with a channel; one end of the hollow tube is communicated with the puncture device, and the other end of the hollow tube sequentially penetrates through the head, the inner cavity and the channel of the core rod; wherein, the one end that the drainage tube kept away from extension pipe wears to locate passageway, hollow tube and the piercing depth of core bar in proper order. The coelomic effusion drainage system reduces the complexity of coelomic effusion diagnosis and treatment, saves the time spent by medical staff on puncture drainage and improves the working efficiency.

Description

Drainage system for body cavity effusion

Technical Field

The invention relates to the field of medical instruments, in particular to a body cavity effusion drainage system.

Background

Clinically, the phenomena of body cavity effusion, including hydrothorax, ascites, pericardial effusion and the like caused by various causes are quite common, and almost all departments are involved. The body cavity dropsy puncture drainage is an indispensable link in the disease diagnosis and treatment process, sometimes even needs to be repeated for a plurality of times, but unfortunately, no product special for body cavity puncture drainage is available for medical staff in clinic. Because no ideal special product is used for body cavity drainage, the central venous catheter is used for pleuroperitoneal cavity effusion puncture drainage in the most extensive treatment mode at present, but the design of the central venous catheter is only suitable for being inserted into a central vein originally, and the problems of complex operation flow, long time consumption, multiple consumed materials and the like exist in the process of being applied to pleuroperitoneal cavity effusion puncture drainage.

Disclosure of Invention

The invention aims to overcome the defects that in the prior art, no ideal special product is used for body cavity drainage, and the central venous catheter is used for thoracoabdominal cavity effusion puncture drainage, which comprises complex operation flow, long time consumption and more consumable materials, and provides a body cavity effusion drainage system.

The invention solves the technical problems by the following technical proposal:

the utility model provides a body cavity hydrops drainage system, its includes a drainage tube, one with extension pipe that one end of drainage tube is linked together, with a negative pressure drainage device that the extension pipe is linked together wear to be equipped with a piercing depth on the other end of drainage tube, its characterized in that, body cavity hydrops drainage system still includes an syringe, the syringe includes:

a head connected to the puncture device;

the cylinder body is connected with one end of the head part far away from the puncture device, and is provided with an inner cavity;

the core rod is arranged in the inner cavity in a sliding way and is provided with a channel;

the hollow tube is communicated with the puncture device at one end, and the other end of the hollow tube sequentially penetrates through the head, the inner cavity and the channel of the core rod; the side wall of the hollow tube is provided with a through hole, and the through hole is communicated with the hollow tube and the inner cavity; the hollow tube only allows the drainage tube to pass through from the core rod to the puncture device in one direction;

one end of the drainage tube, which is far away from the extension tube, sequentially penetrates through the channel of the core rod, the hollow tube and the puncture device.

Therefore, through the structure of the injector, the step of leading the original guide wire to guide the drainage tube into the body cavity is omitted, and meanwhile, through back-pumping the injector, the next operation is carried out after the injector is determined to pump body fluid, so that the success rate of puncture drainage can be greatly improved.

Preferably, the drainage tube is internally provided with a supporting component in a penetrating way. The supporting component plays a supporting role on the drainage tube, and when the drainage tube is acted by external force, the drainage tube sequentially passes through the channel of the core rod, the hollow tube and the puncture device more easily.

Preferably, the length of the support member is greater than the length of the drain tube. In this way, the support member is conveniently removed from the drain tube.

Preferably, the material of the supporting component is metal.

Preferably, the drainage tube is provided with a regulating valve, and the regulating valve is used for regulating the flow rate of liquid in the drainage tube.

Preferably, the end, away from the extension tube, of the drainage tube to the end, close to the extension tube, is sequentially divided into a first part and a second part; the outer wall of the second part is an inclined surface with gradually increasing diameter, and the diameter of one end of the second part far away from the first part is larger than that of one end of the second part near the first part; the diameters of both ends of the first portion are the same.

Preferably, the end of the extension tube, which is close to the drainage tube, to the end, which is far away from the drainage tube, is sequentially divided into a third part and a fourth part, the outer wall of the third part is an inclined surface with gradually increasing diameter, and the diameter of the end, which is far away from the fourth part, of the third part is smaller than the diameter of the end, which is close to the fourth part, of the third part; the diameters of the two ends of the fourth part are the same, and one end, far away from the third part, of the fourth part is communicated with the negative pressure drainage device.

Preferably, the third portion is inserted into the second portion, and the third portion and the second portion are in interference fit. Thus, through the structural arrangement of the connection part of the drainage tube and the extension tube, the connection of the drainage tube and the extension tube can be achieved without other parts.

Preferably, the extension tube further comprises a fifth portion, one end of the fifth portion is communicated with the fourth portion, the other end of the fifth portion is inserted into the negative pressure drainage device, the outer wall of the fifth portion is an inclined surface with gradually decreasing diameter, and the diameter of one end of the fifth portion, which is far away from the fourth portion, is smaller than the diameter of one end of the fifth portion, which is close to the fourth portion.

Preferably, the drainage tube is provided with a side hole, and the side hole is arranged at one end of the drainage tube away from the extension tube.

Preferably, the number of the side holes is three, and the side holes are arranged at intervals.

Thus, the side hole increases the amount of effusion in the body cavity of the patient entering the drainage tube, so that the effusion in the body cavity of the patient can be discharged more quickly.

Preferably, the puncture device is a puncture needle, the puncture needle comprises a needle tube and a needle seat which are connected and communicated with each other, one end of the puncture needle, which is far away from the needle seat, is an inclined plane, and the needle seat is connected with the injector.

Preferably, the negative pressure drainage device is a negative pressure storage liquid container, the negative pressure storage liquid container is cylindrical, a spring is arranged in the negative pressure storage liquid container, a first opening is formed in the upper end of the negative pressure storage liquid container, the first opening is communicated with the extension pipe, and a second opening is formed in the lower end of the negative pressure storage liquid container.

Preferably, the hollow tube is made of metal; the drainage tube is made of silica gel or polyurethane; the material of extension pipe is polyvinyl chloride.

The invention has the positive progress effects that:

1. the complexity of body cavity hydrops diagnosis and treatment is reduced, the time spent on puncture drainage by medical staff is saved, and the working efficiency is improved;

2. the time of puncture and drainage is shortened, so that the pain of a patient is relieved;

3. the puncture drainage does not need a guide wire, so that the material consumption is saved, the medical cost is reduced, and the environmental protection is facilitated.

Drawings

FIG. 1 is a schematic diagram showing the internal structure of a syringe of a body cavity effusion drainage system according to a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of a puncture device of a body cavity effusion drainage system according to a preferred embodiment of the present invention.

FIG. 3 is a schematic view showing the internal structure of a puncture device and a syringe, through which a drainage tube and a supporting member are inserted, of a body cavity effusion drainage system according to a preferred embodiment of the present invention.

FIG. 4 is a schematic view showing the internal structure of a portion of a drainage tube and an extension tube of a body cavity effusion drainage system according to a preferred embodiment of the present invention.

FIG. 5 is a schematic view showing the structure of the drainage tube, the regulating valve, the extension tube and the negative pressure drainage device of the body cavity effusion drainage system according to the preferred embodiment of the present invention.

FIG. 6 is a schematic diagram of a regulating valve of the drainage system for body cavity effusion according to a preferred embodiment of the present invention.

Description of the reference numerals

Drainage tube 10

Regulating valve 11

Opening 112

Communication portion 113

Adjustment part 114

Side hole 12

First portion 13

Second portion 14

Extension tube 20

Third portion 21

Fourth part 22

Fifth part 23

Negative pressure drainage device 30

Spring 31

First opening 32

Puncturing device 40

Needle tube 41

Needle stand 42

Syringe 50

Head 51

Barrel 52

Core rod 53

Piston 531

Hollow tube 54

Inner cavity 55

Channel 56

Through hole 57

Support member 60

Detailed Description

The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.

As will be understood with reference to fig. 1-6, the present embodiment provides a drainage system for body cavity effusion, which includes a drainage tube 10, an extension tube 20 connected to one end of the drainage tube 10, a negative pressure drainage device 30 connected to the extension tube 20, a puncture device 40 penetrating the other end of the drainage tube 10, a syringe 50 and a supporting member 60.

The syringe 50 includes: head 51, cylinder 52, core 53, hollow tube 54. In this embodiment, the syringe 50 has a capacity of 3.0ml and the overall length of the syringe 50 is 80mm.

The head 51 is connected to the puncture device 40. The barrel 52 is connected to the end of the head 51 remote from the lancing device 40, and the barrel 52 is provided with an internal cavity 55.

The core 53 is slidably disposed in the cavity 55, and the core 53 is provided with a channel 56. In other embodiments, the end of the core rod 53 near the head 51 is further sleeved with a piston 531, the piston 531 is made of rubber, and the piston 531 can better seal the inner cavity 55.

One end of the hollow tube 54 is communicated with the puncture device 40, and the other end of the hollow tube 54 sequentially penetrates through the head 51, the inner cavity 55 and the channel 56 of the core rod 53; the side wall of the hollow tube 54 is provided with a through hole 57, and the through hole 57 is communicated with the hollow tube 54 and the inner cavity 55; the hollow tube 54 allows only one-way passage of the drain tube 10 from the core 53 to the puncturing device 40. In this example, the hollow tube has a length of 90mm, an outer diameter of 2.2mm, and an inner diameter of 1.8mm. The hollow tube 54 is made of metal.

One end of the drainage tube 10, which is far away from the extension tube 20, sequentially penetrates through the channel 56 of the core rod 53, the hollow tube 54 and the puncture device 40. In this embodiment, the drainage tube 10 is made of silica gel or polyurethane; the length of the drainage tube 10 is 120mm, the outer diameter of the drainage tube 10 is 1.5mm, and a length mark is arranged at each 10mm interval on the outer side of the drainage tube 10.

The support member 60 is penetrated in the drainage tube 10, that is, the support member 60 is penetrated in the drainage tube 10. The length of the support member 60 is greater than the length of the drain tube 10. The material of the support member 60 is metal. The support member 60 is provided to support the drainage tube 10, and is more easily inserted through the passage 56 of the core rod 53, the hollow tube 54, and the puncture device 40 in this order when the drainage tube 10 is subjected to an external force. In this embodiment, the length of the support member 60 is 10mm greater than the length of the drain tube 10, facilitating the extraction of the support member 60 from the drain tube 10. The supporting member 60 has a diameter identical to the inner diameter of the drainage tube 10 and is made of stainless steel in order to support and fix the drainage tube 10, so that it is easier to sequentially pass the drainage tube 10 through the passage 56 of the core rod 53, the hollow tube 54 and the puncture device 40 and then penetrate into the body cavity, and to facilitate the maintenance of the drainage tube 10 in an upright state after the syringe 50 is withdrawn, thereby facilitating the subsequent operation.

The drainage tube 10 is provided with a regulating valve 11, and the regulating valve 11 is used for regulating the flow rate of liquid in the drainage tube 10. The regulating valve 11 is detachably sleeved on the drainage tube 10. In the present embodiment, the structure of the regulating valve 11 is as shown in fig. 6, the regulating valve 11 is provided with an opening 112, the drainage tube 10 is arranged through the opening 112 on the regulating valve 11, and the drainage tube 10 can be conveniently taken out from the regulating valve 11 or put into the regulating valve 11 through the opening 112. The flow rate of the liquid in the drainage tube 10 is directly regulated through the structure of the opening 112, so that the regulating valve 11 has a simple structure and low production cost. The opening 112 includes a communication portion 113 and an adjustment portion 114 that communicate in order. One end of the communicating portion 113 away from the adjusting portion 114 is arranged on the outer surface of the adjusting valve 11, the side wall of the communicating portion 113 is an inclined surface with gradually decreasing diameter, the width of one end of the communicating portion 113 away from the adjusting portion 114 is larger than that of one end of the communicating portion 113 close to the adjusting portion 114, and the width of one end of the communicating portion 113 close to the adjusting portion 114 is smaller than the diameter of the drainage tube 10. In this way, the drainage tube 10 needs to deform the tube wall of the drainage tube 10 to enter the adjustment portion 114 when passing through the structure of the communication portion 113, and the drainage tube 10 is not easy to slide out of the communication portion 113 as the tube wall of the drainage tube 10 returns to its original shape after the drainage tube 10 enters the adjustment portion 114. The side wall of the adjusting part 114 is an inclined surface with gradually decreasing diameter, the width of one end of the adjusting part 114 close to the communicating part 113 is larger than or equal to the diameter of the drainage tube 10, and the width of one end of the adjusting part 114 far from the communicating part 113 is smaller than the diameter of the drainage tube 10. In this way, when the tube wall of the draft tube 10 slides in the adjustment portion 114, the tube wall of the draft tube 10 deforms according to the change in the width of the adjustment portion 114, thereby adjusting the flow rate of the liquid in the draft tube 10.

The drainage tube 10 is also provided with a side hole 12, and the side hole 12 is arranged at one end of the drainage tube 10 away from the extension tube 20. The number of the side holes 12 is three, and the side holes 12 are arranged at intervals. The side hole 12 increases the amount of effusion in the patient's body cavity entering the drainage tube 10, allowing the effusion in the patient's body cavity to be drained more quickly. In this embodiment, the drainage tube 10 has a side hole 12 at a distance of 2.0mm from the 3.0mm front end and rotated by 120 degrees in the axial direction, and the diameter of the side hole 12 is 0.8mm.

One end of the drainage tube 10, which is far from the extension tube 20, to one end, which is close to the extension tube 20, is sequentially divided into a first part 13 and a second part 14; the outer wall of the second part 14 is an inclined surface with gradually increasing diameter, and the diameter of the end of the second part 14 away from the first part 13 is larger than that of the end of the second part 14 close to the first part 13; the diameter of the two ends of the first portion 13 is the same. The wall thickness of the second portion 14 is smaller than the wall thickness of the first portion 13.

The end of the extension tube 20, which is close to the drainage tube 10, to the end, which is far away from the drainage tube 10, is sequentially divided into a third part 21 and a fourth part 22, wherein the outer wall of the third part 21 is an inclined surface with gradually increasing diameter, and the diameter of the end, which is far away from the fourth part 22, of the third part 21 is smaller than the diameter of the end, which is close to the fourth part 22, of the third part 21; the diameters of the two ends of the fourth part 22 are the same, and the end of the fourth part 22 far away from the third part 21 is communicated with the negative pressure drainage device 30.

The third portion 21 is inserted into the second portion 14, and the third portion 21 is in interference fit with the second portion 14. Thus, by the structural arrangement of the connection part of the drainage tube 10 and the extension tube 20, the communication between the two can be achieved without other components. At the same time, the wall thickness of the second portion 14 is smaller than the wall thickness of the first portion 13, making it easier for the third portion 21 to be inserted into the second portion 14.

In other embodiments, the extension tube 20 further includes a fifth portion 23, one end of the fifth portion 23 is communicated with the fourth portion 22, the other end of the fifth portion 23 is inserted into the negative pressure drainage device 30, the outer wall of the fifth portion 23 is an inclined surface with gradually decreasing diameter, and the diameter of the end of the fifth portion 23 away from the fourth portion 22 is smaller than the diameter of the end of the fifth portion 23 near the fourth portion 22. The extension tube 20 is made of polyvinyl chloride. Further, the extension tube 20 is made of medical nontoxic transparent soft polyvinyl chloride. The length of the extension tube 20 is 800mm, and both ends of the extension tube 20 are of a hard conical structure, so that the drainage tube 10 and the negative pressure drainage device 30 can be conveniently inserted respectively.

The puncture device 40 is a puncture needle, which comprises a needle tube 41 and a needle seat 42 which are connected and communicated with each other, one end of the puncture needle, which is far away from the needle seat 42, is an inclined plane, and the needle seat 42 is connected with the injector 50. The puncture needle is one of the most important parts for guiding the drainage tube 10 into the body cavity, and is not substantially different from the conventional injection needle, and is made of stainless steel which is harmless, sterile and nontoxic to the human body. In the embodiment, the length of the needle tube 41 is 60mm, the length of the needle seat 42 is 10mm, the outer diameter of the needle tube 41 is 2.2mm, and the inner diameter is 1.8mm, and the end surface of the puncture needle far away from the needle seat 42, namely the end surface of the end of the needle point, is an inclined surface, so that the puncture needle can conveniently enter a body cavity and be placed in the drainage tube 10.

In this embodiment, the negative pressure drainage device 30 is a negative pressure storage liquid container, the negative pressure storage liquid container is cylindrical, a spring 31 is disposed in the negative pressure storage liquid container, a first opening 32 is disposed at an upper end of the negative pressure storage liquid container, the first opening 32 is communicated with the extension tube 20, and a second opening (not labeled in the figure) is disposed at a lower end of the negative pressure storage liquid container. The second opening is used for discharging liquid. In this embodiment, the spring 31 is circular, and the diameter of the spring 31 is the same as the diameter of the negative pressure reservoir. Before use, the negative pressure liquid storage device is in a compressed state, the volume is gradually increased along with the increase of the liquid introduction amount, and the maximum liquid introduction amount can reach 1500ml.

The invention relates to the field of medical equipment, in particular to a novel special medical equipment which is specially used for clinical diagnosis and treatment of pathological body cavity effusion caused by various causes, and is particularly suitable for malignant body cavity effusion (such as thoracic cavity, abdominal cavity, pericardial cavity and the like) which needs to be subjected to multiple drainage. In addition, the invention can also be applied to diagnosis and treatment of various benign body cavity effusions, such as abscess, cyst, hydrops and the like, so the clinical application range is very wide.

The invention fundamentally changes the current step flow of drainage of the body cavity effusion, and is a novel system special for rapidly, simply and safely conducting drainage of the body cavity effusion at one time, thereby producing various beneficial effects of improving the working efficiency of medical staff, relieving the pain of patients, reducing the medical cost and the like.

Specifically, the pathological body cavity effusion puncture drainage is actually as simple as the venous blood drawing process, but no medical instrument which is reasonable in design and convenient to use is supplied to medical staff for use at present clinically, so that the operation of puncture drainage is excessively complicated, time-consuming and labor-consuming, and the consumed materials are more, and the situation of bringing adverse effects to both doctors and patients is caused.

The invention mainly improves the existing central venipuncture drainage technology and method by a large margin, namely, omits the step of leading the original guide wire to guide the drainage tube into the body cavity on the basis of not influencing the puncture drainage effect, directly inserts the drainage tube into the body cavity through the puncture needle, thus shortening the time required by puncture drainage without doubt and producing beneficial effects for both doctors and patients. Therefore, compared with all the existing body cavity drainage methods applied to clinic, the body cavity drainage method has the main advantages of simplified flow and reduced operation steps, thus shortening the body cavity puncture drainage time without affecting the efficiency, reducing the consumption, saving the cost and being beneficial to environmental protection.

Meanwhile, compared with the similar products clinically used at present, the invention has great difference in product design, component composition and operation flow, and is realized mainly by simplifying the existing puncture drainage technical flow without influencing the puncture drainage effect, and the whole puncture drainage can be completed in a short time (generally about 5 minutes) by adopting the invention. The method has the main advantages of simple operation, time saving, less consumption, and is beneficial to both doctors and patients.

The whole operation steps of the invention are as follows: firstly, determining a puncture part and carrying out local anesthesia, then, puncturing a puncture needle fixed with a specially designed syringe into a body cavity, after the syringe is withdrawn and the syringe is determined to be withdrawn into body fluid, the fixed syringe is not moved, a drainage tube internally penetrated with a supporting component is quickly penetrated into a channel of a core rod of the syringe by the other hand, and the drainage tube is pushed forward, so that the drainage tube sequentially passes through a metal hollow tube and a puncture device until entering the body cavity. Then the puncture needle and the injector are rapidly withdrawn to the outside direction of the body cavity, when the needle tube of the puncture needle is exposed outside the body, the exposed drainage tube is fixed by the thumb and the index finger of the left hand, so that the drainage tube which enters the body cavity is ensured not to leave the body along with the puncture needle, the drainage tube with the length of about half (60 mm) is positioned in the body cavity, the other half (60 mm) is positioned outside the body, then the fixing part in the drainage tube is pulled out, and then the external part of the drainage tube is clamped by the regulating valve, so that the body fluid is prevented from flowing out from the drainage tube. After the puncture drainage operation procedure is finished, the drainage tube is fixed on the skin around the puncture part by a skin suture needle and a suture line, so that the drainage tube is prevented from falling off or entering a body cavity. One end of an extension tube with two conical ends is connected with one end outside the drainage tube body and is tightly fixed, and the other end of the extension tube is inserted into a negative pressure liquid storage device; the regulating valve is opened to begin body fluid drainage.

Other auxiliary components of the invention include syringes, needles, rubber medical gloves, self-attaching dressings, medical gauze, cotton balls, hole towels, needle sticks, sutures, small pointed blades, sterilizing brushes, labeled test tubes, etc. all of which are sterilized and then all contained in a split, plastic storage case specially designed for the invention, and all of which are disposable during the indicated discard period and must not be reused.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims

1. The utility model provides a body cavity hydrops drainage system, its includes a drainage tube, an extension pipe that is linked together with the one end of drainage tube, with a negative pressure drainage device that is linked together of extension pipe wear to be equipped with a piercing depth on the other end of drainage tube, its characterized in that, body cavity hydrops drainage system still includes an syringe, the syringe includes:

a head connected to the puncture device;

one end of the drainage tube, which is far away from the extension tube, sequentially penetrates through the channel of the core rod, the hollow tube and the puncture device;

a supporting component is arranged in the drainage tube in a penetrating way and is used for supporting the drainage tube; the length of the supporting component is longer than that of the drainage tube.

2. The body cavity effusion drainage system of claim 1, wherein the material of the support member is metal.

3. The body cavity effusion drainage system of claim 1, wherein the drainage tube is provided with a regulating valve for regulating the flow rate of the liquid in the drainage tube.

4. The body cavity effusion drainage system of claim 1, wherein an end of said drain tube distal to said extension tube to an end proximal to said extension tube is divided into a first portion and a second portion in sequence; the outer wall of the second part is an inclined surface with gradually increasing diameter, and the diameter of one end of the second part far away from the first part is larger than that of one end of the second part near the first part; the diameters of both ends of the first portion are the same.

5. The body cavity effusion drainage system of claim 4, wherein the end of the extension tube near the drainage tube to the end far away from the drainage tube is sequentially divided into a third part and a fourth part, the outer wall of the third part is an inclined surface with gradually increasing diameter, and the diameter of the end of the third part far away from the fourth part is smaller than the diameter of the end of the third part near the fourth part; the diameters of the two ends of the fourth part are the same, and one end, far away from the third part, of the fourth part is communicated with the negative pressure drainage device.

6. The body cavity effusion drainage system of claim 5, wherein the third portion is inserted into the second portion and the third portion is an interference fit with the second portion.

7. The drainage system of claim 5, wherein the extension tube further comprises a fifth portion, one end of the fifth portion is communicated with the fourth portion, the other end of the fifth portion is inserted into the negative pressure drainage device, the outer wall of the fifth portion is an inclined surface with gradually decreasing diameter, and the diameter of the end of the fifth portion away from the fourth portion is smaller than the diameter of the end of the fifth portion close to the fourth portion.

8. The body cavity effusion drainage system of claim 1, wherein the drain tube is provided with a side hole, the side hole being provided at an end of the drain tube remote from the extension tube.

9. The body cavity effusion drainage system of claim 8, wherein the number of side holes is three, the side holes being spaced apart.

10. The body cavity effusion drainage system of claim 1, wherein the puncture device is a puncture needle, the puncture needle comprises a needle tube and a needle seat which are connected and communicated with each other, one end of the puncture needle away from the needle seat is an inclined plane, and the needle seat is connected with the injector.

11. The body cavity effusion drainage system of claim 1, wherein the negative pressure drainage device is a negative pressure reservoir, the negative pressure reservoir is cylindrical, a spring is arranged in the negative pressure reservoir, a first opening is arranged at the upper end of the negative pressure reservoir, the first opening is communicated with the extension tube, and a second opening is arranged at the lower end of the negative pressure reservoir.

12. The body cavity effusion drainage system of any of claims 1-11, wherein the hollow tube is of metal; the drainage tube is made of silica gel or polyurethane; the material of extension pipe is polyvinyl chloride.