CN112451757B - Thoracoabdominal cavity flushing drainage and dredging conversion connecting device - Google Patents

Abstract

The invention relates to a thoracic and abdominal cavity irrigation and drainage and dredging conversion connection device. The thoracic and abdominal cavity irrigation and drainage and dredging conversion connection device comprises a connection device body and a dredging device; the left end of the connection device body is connected with a drainage bag, and the right end is connected with the patient's chest and abdominal cavity. There is a waste liquid outlet at the bottom of the connection device body, and a flushing pipe above it; the left end of the connection device body and the wall of the waste liquid outlet pipe are also provided with a pipe flow clamp; the top opening of the flushing pipe is provided with a rubber seal A through hole is provided in the middle of the rubber sealing ring; the dredging device includes a guide wire outlet, a guide wire inlet, a catheter body and a guide wire; the catheter body is provided with a guide wire outlet and a guide wire inlet at the distance The exposed area of the catheter; the surface of the exposed area of the catheter is also provided with a threaded structure. The advantages are: convenient and tight connection, good air tightness, convenient flushing, easy to dredge, no contact, effectively preventing pollution, improving the effect of thoracic and abdominal drainage, and reducing the pain of patients.

Description

A thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device

technical field

The invention relates to the technical field of medical appliances, in particular to a thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device.

Background technique

Pleural effusion and ascites are common manifestations of many diseases. Clinical medical staff usually use the method of thoracoabdominal puncture to place a drainage tube to drain the effusion, blood or gas in the thoracic and abdominal cavity out of the body. Thereby promoting lung recruitment and reducing compression symptoms. Specifically, a puncture trocar is inserted into the thoracic and abdominal cavity to establish a channel, and a drainage tube is implanted to drain the pleural and abdominal effusion, and the drained thoracic and abdominal effusion is collected by a drainage bag.

However, the disadvantage of the current clinical thoracoabdominal puncture and drainage in the drainage process is that the patient's pleural effusion often contains blood tissue, etc., and it is easy to cause the drainage port of the drainage tube to be blocked, resulting in an unsatisfactory drainage effect. Therefore, it is often used clinically to flush the thoracic and abdominal cavity or dredge the drainage tube by re-inserting the catheter or injecting normal saline through the end of the drainage tube. The method of re-insertion will undoubtedly increase the pain of the patient, and at the same time, it will also increase the risk of wound infection; the method of injecting normal saline through the end of the drainage tube requires the medical staff to disconnect the end of the drainage tube and the drainage bag. Connecting the drainage tube with a syringe to inject normal saline will not only easily lead to leakage of drainage fluid, but also cause the problem of contact contamination at the end of the drainage tube, as well as the problem of air and bacteria entering the chest and abdominal cavity through the drainage tube; in addition, due to the drainage tube Due to the interface design problem at the connection with the drainage bag, it is often impossible to achieve a better tight connection and air tightness during the drainage process.

Chinese patent document: CN201820269202.X, the application date is 2018.02.24, the patent name is: a medical thoracic and abdominal drainage connection joint. Disclosed is a medical thoracic and abdominal drainage connection joint composed of a catheter joint, a three-way valve, a cylindrical base, a conical elastic body and a rubber bottom plate. The upper riser of the through valve has a connecting thread on the outer cylindrical surface in the middle. The lower riser 8 penetrates vertically downward into the top of the cylinder base. When the vertical pipe and the horizontal pipe are connected and disconnected, the inner wall of the cylindrical base surrounds the hollow conical elastic body whose inner wall is a concave-convex elastic fold surface, and the rubber bottom plate with a through hole in the middle is fixed on the bottom end of the cylindrical base.

Chinese patent document: CN201920105608.9, the application date is 2019.01.22, the patent name is: an external device for thoracic and abdominal drainage. An external device for thoracic and abdominal drainage is disclosed. The external device for thoracic and abdominal drainage includes a catheter, a first three-way valve, a balloon, a second three-way valve, and a drainage bag; the first three-way valve is arranged on the catheter. the front position; the second three-way valve is set at the end of the catheter; the balloon is set between the first three-way valve and the second three-way valve, and the interior of the balloon communicates with the catheter; The drainage bag is connected with the second three-way valve; the position of the front section of the catheter is set in the abdominal cavity.

Above-mentioned patent document: a kind of medical thoracic and abdominal drainage connection joint in CN201820269202.X, adopting the conduit joint to be a hollow cylindrical tower body, the top cylindrical conduit is sealed vertically downward to communicate with the upper riser of the three-way valve, and the outer cylindrical surface of the middle is provided with There are connecting threads, the inner wall of the cylinder base is surrounded by a hollow conical elastic body whose inner wall is a concave-convex elastic fold surface, and the rubber bottom plate with a through hole in the middle is fixed at the bottom end of the cylinder base. The structure is simple, the connection is tight, and the use is convenient, avoiding repeated Repeated connection of the diversion tube is convenient for promotion and use in clinical care; while a thoracic and abdominal drainage external device in the patent document CN201920105608.9 uses the first three-way valve to be set at the front of the catheter; the second three-way valve is set at the The end position of the catheter; the balloon is set between the first three-way valve and the second three-way valve, and the inside of the balloon is communicated with the catheter; the structure is simple, easy to obtain materials, economical and practical, and no additional use is required during operation To dredge or even replace the catheter with normal saline, the catheter can be dredged only by using a balloon, which greatly simplifies the operation steps, reduces the chance of catheter contamination, increases safety, and improves work efficiency. However, about a kind of thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device, which is convenient and tight connection, good air tightness, convenient for washing, easy to dredging, no contact, effectively prevents pollution, improves the effect of thoracic and abdominal cavity drainage, and reduces the pain of patients. There are no related reports.

To sum up, there is an urgent need for a thoracic and abdominal cavity irrigation and drainage that is convenient and tight in connection, good in air tightness, convenient for flushing, easy to dredge, without contact, effectively prevents pollution, improves the effect of thoracic and abdominal drainage, and reduces the pain of patients. Unclog the conversion connector.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a convenient and tight connection, good air tightness, convenient flushing, easy dredging, no contact, effectively preventing pollution, improving the effect of thoracic and abdominal drainage and reducing the pain of patients. A kind of thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device.

For realizing the above-mentioned purpose, the technical scheme that the present invention takes is:

A thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device, the thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device comprises a connection device body and a dredging device; the left and right ends of the connection device body are tapered tips, and the left end passes through the drainage. The tube is connected to the drainage bag, and the right end is connected to the chest and abdominal cavity of the patient through the drainage tube; a waste liquid outlet is arranged below the body of the connection device, and a flushing pipe is arranged above it; the left end of the connection device body and the wall of the waste fluid outlet are also There is a pipe flow clamp; the top opening of the flushing pipe is provided with a rubber sealing ring, and the middle position of the rubber sealing ring is provided with a through hole; A screw cap is provided on the thread; the dredging device includes a guide wire outlet, a guide wire inlet, a catheter body and a guide wire; the catheter body is provided with a catheter exposure area away from the guide wire outlet and the guide wire inlet; the The surface of the exposed area of the catheter is also provided with a threaded structure.

As a preferred technical solution, the connecting device body has a "cross"-shaped structure, and the minimum diameter of the conical tips at the left and right ends is smaller than the diameter of the drainage tube, and the maximum diameter is larger than the diameter of the drainage tube.

As a preferred technical solution, the included angle between the flushing pipe and the horizontal plane of the left end of the connecting device body is 30°.

As a preferred technical solution, the diameter of the through hole is 1 mm.

As a preferred technical solution, the dredging device is a "double head" dredging device; the guide wire outlet, the guide wire inlet and the catheter body are on the same plane, and the guide wire inlet is located between the two .

As a preferred technical solution, the guide wire outlet, the guide wire inlet and the catheter body are connected with each other. After the guide wire penetrates through the guide wire inlet, the guide wire protrudes through the catheter body and the guide wire outlet.

As a preferred technical solution, the length of the guide wire outlet and the guide wire inlet is about 3 cm; the catheter exposed area is about 3 cm away from the guide wire outlet and the guide wire inlet, and the length of the catheter exposed area is about 4.5 cm .

As a preferred technical solution, the guide wire outlet is "tip-shaped", the diameter of the distal end is smaller than the diameter of the top end, and the diameter of the proximal end is larger than the diameter of the catheter body; the inlet of the guide wire is "trumpet-shaped", and the diameter of the distal end is The diameter of the proximal end is equal to the diameter of the catheter body, which is about one time larger than the diameter of the catheter body.

As a preferred technical solution, a three-way valve is also provided on the drainage tube connecting the right end of the connecting device body with the patient's thoracic and abdominal cavity.

The advantages of the present invention are:

1. The left and right ends of the connecting device body are designed with a tapered tip structure, and the minimum diameter of the tip is slightly smaller than the diameter of the existing thoracoabdominal drainage tube, and the maximum diameter is slightly larger than the diameter of the thoracic and abdominal cavity drainage tube, so as to facilitate the insertion of the drainage tubes to maintain each other Secure the connection while ensuring the connection is airtight.

2. The waste liquid outlet under the body of the connecting device is a cylindrical structure, which is used for the outflow of the thoracic and abdominal flushing liquid. The design of the outlet is downward, which is convenient for collecting polluted liquid and preventing pollution.

3. The left end of the connection device body and the pipe flow clip on the wall of the waste liquid outlet can close the left end of the connection device body and the waste liquid outlet channel when injecting physiological saline, so that the physiological saline can accurately enter the thoracic and abdominal cavity and avoid flushing each time. Unplug the drainage tube in the abdominal cavity to prevent air and bacteria from entering the chest and abdominal cavity. After the injection is completed, open the tube flow clip, which can be used to flush the outflow of waste fluid or collect the drainage fluid, which improves the drainage effect and reduces the patient's pain. pain.

4. The horizontal included angle between the opening direction of the flushing tube and the left end of the connecting device body is 30°, and the opening direction is designed to face away from the patient, which is convenient for operation and use, and at the same time prevents contact with the patient's skin and avoids contamination.

5. The top of the irrigation tube is provided with a rubber sealing ring, and the design of a through hole in the middle of the rubber sealing ring can be connected with a common medical syringe, so as to inject physiological saline to flush the blockage at the front end of the drainage tube and to the patient's chest and abdomen. Internal flushing action.

6. The design of the rubber sealing ring can tightly wrap the tip of the syringe when the syringe is inserted to prevent the flushing fluid from overflowing. In addition, through the screw cap provided on the periphery of the pipe wall at the top of the flushing port, it can be flushed without injecting normal saline. Seal the irrigation port to prevent liquid leakage or gas from entering the chest and abdominal cavity to ensure good air tightness.

7. The threaded structure on the surface of the exposed area of the catheter is used to increase the friction force of the guide wire when it enters and exits, and it is convenient to fix the guide wire; the guide wire outlet is "tip type", the diameter of the distal end is smaller than the diameter of the top end, and the diameter of the proximal end is larger than the diameter of the catheter body , the purpose is to facilitate the tight connection between the catheter body and the top of the guide wire outlet.

8. The entrance of the guide wire is "trumpet-shaped", the diameter of the distal end is about twice the diameter of the catheter body, and the diameter of the proximal end is equal to the diameter of the catheter body. The guide wire after dredging will cause surrounding pollution, which is beneficial to be used again when it needs to be dredged.

9. With the dredging device of the present invention, when the front end of the drainage tube is blocked and needs to be dredged, it is only necessary to insert the guide wire outlet into the through hole of the rubber sealing ring provided at the top of the flushing port, and then the guide wire can be adjusted by adjusting the guide wire inlet. The entry and exit of the wire can have a dredging effect on the front end of the drainage tube.

10. By setting a three-way valve on the drainage tube connecting the patient’s chest and abdominal cavity, while ensuring normal and smooth drainage, the drainage fluid can be directly collected and submitted for inspection, avoiding the need to temporarily close the left end of the connection device or the waste fluid outlet at the bottom. Save time and ensure the quality of the drainage fluid sent for inspection.

Description of drawings

1 is a schematic three-dimensional structure diagram of a connecting device body of a thoracic and abdominal cavity irrigation and drainage, dredging conversion connecting device according to the present invention.

FIG. 2 is a schematic three-dimensional structure diagram of a dredging device of a thoracic and abdominal cavity irrigation and drainage and dredging conversion connection device according to the present invention.

3 is a schematic structural diagram of a thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device during injection and flushing of the present invention.

FIG. 4 is a schematic structural diagram of a thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device during dredging according to the present invention.

5 is a schematic structural diagram of a tube flow clip of a thoracic and abdominal cavity irrigation and drainage and dredging conversion connection device according to the present invention.

6 is a schematic structural diagram of another thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device according to the present invention.

Detailed ways

The present invention will be further described below in conjunction with the embodiments and with reference to the accompanying drawings.

The reference numerals and components involved in the drawings are as follows:

1. Connection device body 11. Waste liquid outlet

12. Flushing tube 13. Tube flow clamp

14. Rubber sealing ring 15. Through hole

16. External thread 17. Screw cap

2. Unclogging device 21. Guide wire outlet

22. Guide wire inlet 23. Catheter body

24. Guide wire 3. Drainage tube

4. Drainage bag 5. Waste bucket

6. Three-way valve 7. Patient's chest and abdomen

Example 1

Please refer to the accompanying drawings 1 and 2. FIG. 1 is a schematic diagram of the three-dimensional structure of a thoracic and abdominal cavity irrigation and drainage and dredging conversion connection device of the present invention. Schematic. A thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device, the thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device comprises a connection device body 1 and a dredging device 2; The connection device body 1 is in a "cross" shape structure; The left and right ends of the connection device body 1 are tapered tips, and the left end is connected to the drainage bag 4 through the drainage tube 3, and the right end is connected to the chest and abdominal cavity of the patient through the drainage tube; the lower part of the connection device body 1 is provided with a waste liquid outlet 11, The upper part is provided with a flushing pipe 12; the left end of the connecting device body 1 and the pipe wall of the waste liquid outlet 11 are also provided with a pipe flow clamp 13; the included angle between the flushing pipe 12 and the horizontal plane of the left end of the connecting device body 1 is 30°; the top opening of the flushing pipe 12 is provided with a rubber sealing ring 14, and the middle position of the rubber sealing ring 14 is provided with a through hole 15; The external thread 16 is provided with a screw cap 17;

The dredging device 2 is a "double-ended" wire guide tube; the dredging device 2 includes a guide wire outlet 21, a guide wire inlet 22, a catheter body 23 and a guide wire 24; the guide wire outlet 21, the guide wire The inlet 22 and the catheter body 23 are on the same plane, and the guide wire inlet 22 is located between the two; the catheter body 23 is provided with a catheter exposure area 25 away from the guide wire outlet 21 and the guide wire inlet 22; The surface of the catheter exposed area 25 is also provided with a threaded structure 26; the guide wire outlet 21, the guide wire inlet 22 and the catheter body 23 are in a communication structure. The body 23 thus protrudes from the guide wire outlet 21 .

It should be noted that: the connecting device body 1 is made of transparent plastic material; the left and right ends of the connecting device body 1 are designed with a tapered tip-shaped structure, and the minimum diameter of the tip is slightly smaller than the existing thoracic and abdominal cavity drainage. The diameter of the tube 3, the maximum diameter is slightly larger than the diameter of the thoracic and abdominal cavity drainage tube 3, so as to facilitate the insertion of the drainage tube 3 to maintain a fixed connection with each other, while ensuring the air tightness of the connection; the waste liquid outlet 11 provided under the connection device body 1 is: The cylindrical structure is used for the outflow of the thoracic and abdominal cavity flushing liquid, and the outlet is designed to be downward, which is convenient for the waste liquid bucket 5 to collect the polluted liquid and prevent pollution; The flow clip 13 can close the left end of the connecting device body 1 and the channel of the waste liquid outlet 11 when injecting physiological saline, so that the physiological saline can accurately enter the thoracic and abdominal cavity, and avoid pulling out the drainage tube every time the abdominal cavity is flushed, so as to prevent the entry of air and bacteria After the thoracic and abdominal cavity is injected, open the tube flow clip 13, which can be used for the outflow of flushing waste liquid or the collection of drainage liquid, which improves the drainage effect and reduces the pain of the patient; the tube flow clip 13 can be used for medical catheters The clip (refer to Figure 5, the pipe body at the left end of the connection device body 1 and the waste liquid outlet pipe body respectively pass through the through hole a and the through hole b), not only can the drainage be closed as required, but also the drainage speed can be adjusted; the described The opening direction of the flushing tube 12 and the horizontal angle between the left end of the connecting device body 1 is 30°, and the opening direction is designed to face away from the patient, which is convenient for operation and use, and at the same time prevents contact with the patient's skin and avoids pollution; the top of the flushing tube 12 is provided with The rubber sealing ring 14, and the design of the through hole 15 in the middle of the rubber sealing ring 14, can be connected with a common medical syringe, so as to inject physiological saline to flush the blockage at the front end of the drainage tube and flush the patient's thoracic and abdominal cavity. The diameter of the through hole 15 is about 1 mm; the design of the rubber sealing ring 14 can tightly wrap the tip of the syringe when the syringe is inserted to prevent the flushing liquid from overflowing. Some screw caps 17 can seal the flushing port 12 when there is no need to inject physiological saline for flushing to prevent liquid leakage or gas from entering the thoracic and abdominal cavity, and ensure good air tightness;

The length of the guide wire outlet 21 and the guide wire inlet 22 in the dredging device 2 is about 3 cm; the catheter exposed area 25 is about 3 cm away from the guide wire outlet 21 and the guide wire inlet 22, and the length of the catheter exposed area 25 is about 3 cm. About 4.5cm; the dredging device 2 is also made of transparent material; the thread structure 26 provided on the surface of the catheter exposed area 25 is used to increase the friction force when the guide wire 24 enters and exits, and is convenient to fix the guide wire 24; The described guide wire outlet 21 is "tip type", the diameter of the distal end is smaller than the diameter of the top end, and the diameter of the proximal end is larger than the diameter of the catheter body 23, so as to facilitate the close connection between the catheter body 23 and the top of the guide wire outlet 23; the described guide wire inlet 22 The diameter of the distal end is approximately double the diameter of the catheter body 23, and the diameter of the proximal end is equal to the diameter of the catheter body 23. The purpose is to facilitate the guide wire 24 to be separated from the catheter body 23 and then re-enter the guide wire 24 into the catheter body 23, so that the The guide wire 24 after dredging is prevented from causing surrounding pollution, which is beneficial to be used again when it needs to be dredged; the dredging device 2 in the present invention, when the front end of the drainage tube 3 is blocked and needs to be dredged, only needs to insert the guide wire outlet 21 into the hole. In the through hole 122 of the rubber sealing ring provided at the top of the flushing port 12 , the front end of the drainage tube 3 can be dredged by adjusting the entry and exit of the guide wire 23 at the guide wire inlet 22 .

Example 2

Please refer to FIG. 6 . FIG. 6 is a schematic structural diagram of another thoracic and abdominal cavity irrigation and drainage and dredging conversion connection device of the present invention. This embodiment is basically the same as Embodiment 1, except that the drainage tube 3 connecting the right end of the connection device body 1 to the patient's chest and abdominal cavity in this embodiment is provided with a three-way valve 6; There is a three-way valve 6 on the drainage tube 3 of the abdominal cavity, which can directly collect and submit the drainage fluid while ensuring normal and smooth drainage, avoiding the problem of temporarily closing the left end of the connection device body 1 or the waste fluid outlet 12 below, saving time, At the same time, ensure the quality of the drainage fluid sent for inspection.

The present invention is a thoracic and abdominal cavity irrigation and drainage, dredging conversion connecting device, the left and right ends of the connecting device body are designed with a tapered tip-shaped structure, and the minimum diameter of the tip is slightly smaller than the diameter of the existing thoracic and abdominal cavity drainage tube, and the maximum diameter is slightly larger than that of the chest and abdominal cavity. The diameter of the abdominal drainage tube is convenient for inserting the drainage tube to maintain a fixed connection with each other, and at the same time to ensure the air-tightness of the connection; the waste liquid outlet provided under the body of the connecting device is a cylindrical structure for the outflow of the thoracic and abdominal cavity irrigation fluid, and the outlet faces downward. The design is easy to collect polluted liquid and prevent pollution; the pipe flow clips provided on the left end of the connecting device body and the wall of the waste liquid outlet pipe can close the left end of the connecting device body and the waste liquid outlet channel when injecting physiological saline, so that the physiological saline can be accurately Enter the thoracic and abdominal cavity, avoid unplugging the drainage tube every time the abdominal cavity is flushed, to prevent air and bacteria from entering the chest and abdominal cavity. The drainage effect reduces the pain of the patient at the same time; the horizontal angle between the opening direction of the flushing tube and the left end of the connecting device body is 30°, and the design of the opening direction facing away from the patient is convenient for operation and use, while preventing contact with the patient's skin and avoiding pollution; the flushing tube There is a rubber sealing ring on the top and a through hole in the middle of the rubber sealing ring, which can be connected with a common medical syringe, so as to inject physiological saline to flush the blockage at the front end of the drainage tube and flush the patient's thoracic and abdominal cavity. ; The design of the rubber sealing ring can tightly wrap the tip of the syringe when the syringe is inserted to prevent the overflow of the flushing liquid. In addition, through the screw cap provided on the periphery of the pipe wall at the top of the flushing port, when flushing with physiological saline is not required, the The flushing port is sealed to prevent liquid leakage or gas from entering the thoracic and abdominal cavity, ensuring good air tightness; the threaded structure on the surface of the exposed area of the catheter is used to increase the friction of the guide wire when it enters and exits, and it is convenient to fix the guide wire; the guide wire outlet is "" Tip type", the diameter of the distal end is smaller than the diameter of the top end, and the diameter of the proximal end is larger than the diameter of the catheter body, in order to facilitate the close connection between the catheter body and the top of the guide wire outlet; times, the diameter of the proximal end is equal to the diameter of the catheter body, and the purpose is to facilitate the guide wire to be separated from the catheter body and re-receive the guide wire into the catheter body, so as to prevent the surrounding pollution caused by the guide wire after dredging, which is beneficial to be used again when it needs to be dredged; The dredging device, when the front end of the drainage tube is blocked and needs to be dredged, just insert the guide wire outlet into the through hole of the rubber sealing ring provided at the top of the flushing port, and then adjust the in and out of the guide wire at the guide wire inlet. It has the effect of dredging the front end of the drainage tube; by setting a three-way valve on the drainage tube connecting the patient's thoracic and abdominal cavity, while ensuring normal and smooth drainage, the drainage fluid can be directly collected and submitted for inspection, avoiding the need to temporarily close the left end of the connection device body Or the problem of the waste liquid outlet below, saving time and ensuring the quality of the drainage liquid sent for inspection.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and supplements can be made, and these improvements and supplements should also be considered as It is the protection scope of the present invention.

Claims (6)

1. a thoracic and abdominal cavity flushing and drainage, dredging conversion connection device, is characterized in that, described thoracic and abdominal cavity flushing and drainage, dredging conversion connection device comprise a connection device body, a dredging device; the left and right ends of the described connection device body are tapered The tip, and the left end is connected to the drainage bag through a drainage tube, and the right end is connected to the chest and abdominal cavity of the patient through a drainage tube; a waste liquid outlet is arranged below the body of the connecting device, and a flushing tube is arranged above; the flushing tube is connected to the left end of the body of the connecting device. The included angle between the horizontal planes is 30°, and the opening direction is facing away from the patient; the left end of the connection device body and the wall of the waste liquid outlet pipe are also provided with a pipe flow clamp; the right end of the connection device body is connected to the patient's chest and abdominal cavity The drainage pipe is also provided with a three-way valve; the top opening of the flushing pipe is provided with a rubber sealing ring, and the middle position of the rubber sealing ring is provided with a through hole; The outer thread is provided with a screw cap; the dredging device includes a guide wire outlet, a guide wire inlet, a catheter body and a guide wire; the guide wire outlet, the guide wire inlet and the catheter body are in a connected structure, After the guide wire is penetrated from the guide wire inlet, it goes out through the catheter body and the guide wire outlet; the guide wire outlet is "tip-shaped", the diameter of the distal end is smaller than the diameter of the top end, and the diameter of the proximal end is larger than the diameter of the catheter body; the The guide wire inlet is "trumpet-shaped", the diameter of the distal end is larger than the diameter of the catheter body, and the diameter of the proximal end is equal to the diameter of the catheter body; the catheter body is provided with a catheter exposure area away from the guide wire outlet and the guide wire inlet; the The surface of the exposed area of the catheter is also provided with a threaded structure. 2. The thoracic and abdominal cavity irrigation and drainage, dredging conversion connecting device according to claim 1, characterized in that, the connecting device body is in a "cross"-shaped structure, and the minimum diameter of the conical tips at the left and right ends is smaller than the diameter of the drainage tube , the maximum diameter is greater than the diameter of the drainage tube. 3 . The thoracic and abdominal cavity irrigation and drainage and dredging conversion connection device according to claim 1 , wherein the diameter of the through hole is 1 mm. 4 . 4. The thoracic and abdominal cavity irrigation and drainage according to claim 1, the dredging conversion connection device is characterized in that, the dredging device is a "double head" dredging device; the guide wire outlet, the guide wire inlet and the catheter body are three. The two are on the same plane, and the guide wire inlet is between the two. 5. The thoracic and abdominal cavity irrigation and drainage, dredging conversion connection device according to claim 1, wherein the length of the guide wire outlet and the guide wire inlet is 3cm; 3 cm, and the length of the exposed area of the catheter is 4.5 cm. 6 . The thoracic and abdominal cavity irrigation and drainage and dredging conversion connecting device according to claim 1 , wherein the connecting device body and the dredging device are made of transparent plastic material. 7 .

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