Anti-blocking negative pressure abdominal drainage tube

Abstract

The present invention relates to the technical field of abdominal drainage, and discloses an anti-blocking negative pressure abdominal drainage tube, comprising: an outer tube of the drainage tube, a limit head integrated with the outer tube of the drainage tube is arranged at the top, a plurality of outer grooves are provided at one end of the outer wall of the drainage tube inserted into the patient's body, a plurality of negative pressure drainage holes penetrating the outer tube of the drainage tube are provided at the deepest point on the inner side of the outer groove, so as to prevent the negative pressure in the outer tube of the drainage tube from directly acting on the tissue and sucking the tissue into the negative pressure drainage hole, and a plurality of inner grooves are provided on the inner wall of the outer tube of the drainage tube near the liquid outlet end of the outer tube of the drainage tube. The plurality of inner grooves of the present invention are staggered with the plurality of outer grooves, so as to increase the drainage cavity in a limited space, and even if the outer tube of the drainage tube is blocked by external force or pressure of surrounding tissues, the plurality of inner grooves inside the outer tube of the drainage tube still have space to ensure the outflow of liquid, thereby solving the problem of poor drainage caused by occlusion of the lumen after the outer tube of the drainage tube is blocked by external force or pressure of surrounding tissues.

Description

Technical Field

[0001] The invention relates to the field of abdominal drainage, and more particularly to an anti-blocking negative pressure abdominal drainage tube. Background Art

[0002] The surgical drainage tubes used clinically are used to guide the pus, blood, and fluid accumulated between human tissues or in the body cavity to the outside of the body to prevent the spread of postoperative infection and affect wound healing. The abdominal drainage tubes are used to promptly eliminate the body fluids and blood retained in the abdominal cavity after abdominal surgery, drain the effusion and pus, reduce the absorption of toxins, and promote wound healing. They can also be used to decompress hollow organs, prevent the overflow of cavity contents and contaminate the abdominal cavity, or facilitate the control of intracavitary infection, or use drainage tubes to inject antibiotics into the abdominal cavity and other treatment measures. The nature and quantity of the drainage can also help analyze the condition.

[0003] Now some people have proposed to open a few more holes on the side of the end of the drainage tube so that in case the main hole is blocked, drainage can be carried out from the side. However, through actual application, it is found that even in this way, blockage and insufficient drainage often occur. The main reason for this is that large lumps such as blood clots and greater omentum have entered the drainage tube or the side hole, resulting in blockage of the main or side hole. Sometimes, because the large lumps that have entered the drainage tube or the side hole are connected to the abdominal organs, it will cause unnecessary pain to the patient when the abdominal drainage tube is removed; and because the side holes of the existing abdominal drainage tubes are arranged irregularly, the drainage of abdominal effusion is insufficient, which may aggravate the condition or cause serious complications after abdominal surgery. For this reason, we propose an anti-blocking negative pressure abdominal drainage tube. Summary of the invention

[0004] The present invention provides an anti-blocking negative pressure abdominal drainage tube, which solves the technical problem in the related art that large blocks such as blood clots and greater omentum enter the drainage tube or side holes, resulting in blockage of the main tube or side holes and insufficient drainage.

[0005] The present invention provides an anti-blocking negative pressure abdominal drainage tube, comprising: an outer tube of the drainage tube, a limit head integrated with the outer tube is arranged on the top of the outer tube of the drainage tube, a plurality of outer grooves are opened at one end of the outer wall of the drainage tube inserted into the patient's body, a plurality of negative pressure drainage holes penetrating the outer tube of the drainage tube are opened at the deepest point on the inner side of the outer groove, so as to prevent the negative pressure in the outer tube of the drainage tube from directly acting on the tissue, sucking the tissue into the negative pressure drainage hole and causing the negative pressure drainage hole to be blocked, a plurality of inner grooves are opened on the inner wall of the outer tube of the drainage tube near the liquid outlet end of the outer tube of the drainage tube, and the plurality of inner grooves are staggered with the plurality of outer grooves, so as to increase the drainage cavity in a limited space, and even if the drainage tube is blocked by external force or pressure from surrounding tissues, there is still space in the inner grooves inside the drainage tube.

[0006] Furthermore, several outer grooves and the ribs on both sides of the outer tube of the drainage tube are of arc-shaped structure, and the bottom ends of several outer grooves extend to the bottom end surface of the outer tube of the drainage tube, which is used to reduce the resistance of the outer tube of the drainage tube to the pulled-out tissue. The top ends of several outer grooves are all smooth arc-shaped surfaces with no angles, which is used to reduce damage to the tissue when inserting the outer tube of the drainage tube. The lowest end positions of several inner grooves are higher than the highest end positions of several outer grooves.

[0007] Furthermore, the structure of the limit head is I-shaped, and a liquid injection head is fixedly arranged on one side of the limit head. A flushing channel is opened inside the outer tube of the drainage tube between the plurality of inner grooves, and the bottom end of the flushing channel is connected to the top end of the outer groove. The interior of the limit head is connected to the flushing channel, and the plurality of flushing channels correspond to the plurality of outer grooves one by one, so as to inject liquid into the outer grooves.

[0008] Furthermore, a drainage tube inner tube assembly is passed through the drainage tube outer tube, and the drainage tube inner tube assembly includes a drainage tube inner core whose diameter is smaller than the inner diameter of the drainage tube outer tube, and the length of the drainage tube inner core is greater than the length of the drainage tube outer tube.

[0009] Furthermore, a plurality of inner core suction holes are provided on the outer wall of the inner core of the drainage tube near one end of the outer groove, and the diameter of the inner core suction hole is larger than the diameter of the negative pressure drainage hole, so as to reduce blockage during drainage to the outside of the body.

[0010] Furthermore, a gas injection head four is fixedly arranged on one side of the drainage tube inner core close to the drainage outlet, a clearing balloon is fixedly arranged on the bottom end of the drainage tube inner core, and the clearing balloon and the gas injection head four are connected to each other.

[0011] Furthermore, the expanded diameter of the clearing balloon is the same as the inner diameter of the outer tube of the drainage tube, and the clearing balloon has a ring-shaped bulging structure after being inflated. The ring-shaped bulging balloon is used to remove foreign matter attached to the inside of the outer tube of the drainage tube by friction.

[0012] Furthermore, a limit head 2 with a diameter larger than that of the inner core of the drainage tube is fixedly provided on the outer wall of the inner core of the drainage tube below the gas injection head 4, and a connecting protective sleeve is fixedly provided below the limit head 2. The bottom of the connecting protective sleeve is fixedly connected to the limit head 1, and the connecting protective sleeve, the limit head 2 and the limit head 1 constitute a sealing structure, and the connecting protective sleeve is an elastic film structure.

[0013] Furthermore, an outer sleeve at one end of the outer tube of the drainage tube near the limiting head is provided with a skin-adaptive component for pressing on the skin and completely sealing the gap between the skin structure. The skin-adaptive component includes an outer skin balloon, a skin segment balloon is arranged below the outer skin balloon, and an inner skin balloon is arranged below the skin segment balloon. The outer skin balloon, the skin segment balloon and the inner skin balloon are an integrated structure.

[0014] Furthermore, the air inlet ends of the outer skin balloon, the skin segment balloon and the inner skin balloon are respectively provided with an air injection head one, an air injection head two and an air injection head three, and the expansion degrees of the outer skin balloon, the skin segment balloon and the inner skin balloon are adjusted by injecting air separately through the air injection head one, the air injection head two and the air injection head three, and the expansion structures of the outer skin balloon, the skin segment balloon and the inner skin balloon are dumbbell-shaped.

[0015] The beneficial effects of the present invention are:

[0016] In the present invention, the plurality of inner grooves are staggered with the plurality of outer grooves, thereby increasing the drainage cavity in a limited space. Furthermore, even if the outer tube of the drainage tube is blocked by external force or compression of surrounding tissues, the plurality of inner grooves inside the drainage tube still have space to ensure the outflow of liquid, thereby solving the problem of poor drainage caused by blockage of the lumen after the outer tube of the drainage tube is compressed by external force or surrounding tissues.

[0017] Use a syringe to insert into the injection head and inject liquid into the injection head. The liquid can be ejected along the flushing channel. On the one hand, it can flush the outer groove to reduce blockage, and on the other hand, it can give medicine to the abdominal cavity, making it easier for medical staff to inject liquid medicine into the abdominal cavity;

[0018] After being inflated, the Qingzhu balloon will expand in a ring shape. The diameter of the ring-shaped expanded Qingzhu balloon is the same as the outer tube of the drainage tube. The ring-shaped expanded Qingzhu balloon can be used to remove foreign matter attached to the inside of the outer tube of the drainage tube by friction, thereby ensuring the patency of the inside of the drainage tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the connection structure between the inner core of the drainage tube and the outer tube of the drainage tube of the present invention;

[0021] Figure 3 The present invention Figure 2 The enlarged schematic diagram at A in the middle;

[0022] Figure 4 The present invention Figure 2 The enlarged schematic diagram of point B in the middle;

[0023] Figure 5 It is a schematic diagram of the inner core structure of the drainage tube of the present invention;

[0024] Figure 6 The present invention Figure 5 The enlarged schematic diagram at C in the middle;

[0025] Figure 7 It is a schematic diagram of the structure of the skin extracellular balloon of the present invention;

[0026] Figure 8 It is a schematic diagram of the internal structure of the outer tube of the drainage tube of the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure in which the connection protection sleeve of the present invention is stretched.

[0028] In the figure: 11. Outer tube of drainage tube; 12. Outer groove; 13. Negative pressure drainage hole; 14. Inner groove; 15. Limiting head one; 16. Injection head; 17. Flushing channel; 2. Muscle-adapting component; 21. Skin outer balloon; 22. Skin segment balloon; 23. Skin inner balloon; 24. Injection head one; 25. Injection head two; 26. Injection head three; 3. Connecting protective cover; 4. Inner tube component of drainage tube; 41. Inner core of drainage tube; 42. Limiting head two; 43. Injection head four; 44. Inner core liquid suction hole; 45. Clearing balloon. DETAILED DESCRIPTION

[0029] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0030] like Figure 1 - Fig. 9 As shown, a blockage-proof negative pressure abdominal drainage tube includes: a drainage tube outer tube 11, and a limiting head 15 which is integrated with the drainage tube outer tube 11 is arranged on the top of the drainage tube outer tube 11. After the operation, ensure that the drainage tube outer tube 11 is correctly placed in the abdominal cavity and properly fixed. The drainage tube outer tube 11 is connected to the drainage bag to collect the drained fluid.

[0031] The outer wall of the outer tube 11 of the drainage tube is provided with a plurality of outer grooves 12 at one end inserted into the patient's body, and a plurality of negative pressure drainage holes 13 penetrating the outer tube 11 of the drainage tube are provided at the deepest point on the inner side of the outer grooves 12 to prevent the negative pressure in the outer tube 11 of the drainage tube from directly acting on the tissue, sucking the tissue into the negative pressure drainage holes 13, and causing the negative pressure drainage holes 13 to be blocked. The inner wall of the outer tube 11 of the drainage tube is provided with a plurality of inner grooves 14 near the liquid outlet end of the outer tube 11 of the drainage tube, and a plurality of inner grooves 14 are staggered with a plurality of outer grooves 12, thereby increasing the drainage cavity in a limited space. Even if the drainage tube is blocked by external force or pressure from surrounding tissues, there is still space in the inner grooves 14 inside the drainage tube.

[0032] After the drainage tube outer tube 11 is placed at the designated position, the liquid outlet end of the drainage tube inner core 41 is connected to the drainage bag. Under the action of negative pressure, negative pressure suction is presented in the drainage tube outer tube 11. Under the suction, the blood in the patient's body is collected in the multiple outer grooves 12, and then enters the drainage tube outer tube 11 through the negative pressure drainage hole 13, and then is sucked into the drainage tube inner core 41, and finally sucked out and flows into the drainage bag;

[0033] Several inner grooves 14 are staggered with multiple outer grooves 12, which increases the drainage cavity in a limited space. Secondly, even if the outer tube 11 of the drainage tube is blocked by external force or pressure from surrounding tissues, the several inner grooves 14 inside it still have space to ensure the outflow of liquid, thereby solving the problem of poor drainage caused by occlusion of the lumen after the outer tube 11 of the drainage tube is blocked by external force or pressure from surrounding tissues.

[0034] Several outer grooves 12 and the ribs on both sides of the drainage tube outer tube 11 are arc-shaped structures, and the bottom ends of several outer grooves 12 extend to the bottom end surface of the drainage tube outer tube 11, which is used to reduce the resistance of the drainage tube outer tube 11 to the tissue when pulling out. The top ends of several outer grooves 12 are all smooth arc-shaped surfaces without angles, which are used to reduce the damage to the tissue when inserting the drainage tube outer tube 11. The lowest end positions of several inner grooves 14 are higher than the highest end positions of several outer grooves 12. The wall thickness of the drainage tube outer tube 11 is 1mm, and the depth of multiple outer grooves 12 is 0.5mm. This design can prevent the negative pressure in the drainage tube outer tube 11 from directly acting on the tissue, sucking the tissue into the negative pressure drainage hole 13, causing the negative pressure drainage hole 13 to be blocked, and the design of the outer grooves 12 can drain a larger range of liquid to the negative pressure drainage hole 13 and discharge it through the drainage tube outer tube 11 and the drainage tube inner core 41. Several inner grooves 14 have a depth of 0.5mm.

[0035] The structure of the limit head 15 is an I-shape, and an injection head 16 is fixedly arranged on one side of the limit head 15. A flushing channel 17 is opened inside the outer tube 11 of the drainage tube between the plurality of inner grooves 14, and the bottom end of the flushing channel 17 is interconnected with the top end of the outer groove 12. The interior of the limit head 15 is interconnected with the flushing channel 17, and the plurality of flushing channels 17 correspond one-to-one to the plurality of outer grooves 12, which are used to inject liquid into the outer grooves 12. A syringe is inserted into the injection head 16, and liquid is injected into the injection head 16. The liquid can be sprayed out along the flushing channel 17. On the one hand, the outer grooves 12 can be flushed to reduce blockage, and drugs can also be given into the abdominal cavity, which is convenient for medical staff to inject liquid medicine into the abdominal cavity.

[0036] The drainage tube outer tube 11 is penetrated by a drainage tube inner tube assembly 4 , which includes a drainage tube inner core 41 whose diameter is smaller than the inner diameter of the drainage tube outer tube 11 , and whose length is greater than that of the drainage tube outer tube 11 .

[0037] A plurality of inner core liquid absorption holes 44 are provided on the outer wall of the inner core 41 of the drainage tube near one end of the outer groove 12. The diameter of the inner core liquid absorption hole 44 is larger than the diameter of the negative pressure drainage hole 13, and is used to reduce blockage during drainage to the outside of the body. Under the action of negative pressure, negative pressure suction is presented in the outer tube 11 of the drainage tube. Under the suction, the blood in the patient's body is collected in the multiple outer grooves 12, and enters the outer tube 11 of the drainage tube through the negative pressure drainage holes 13. Under the suction inside the inner core 41 of the drainage tube, the liquid collected in the outer tube 11 of the drainage tube is sucked into the inner core 41 of the drainage tube from the inner core liquid absorption hole 44, and finally flows into the drainage bag.

[0038] A gas injection head 43 is fixedly provided on one side of the drainage tube inner core 41 close to the drainage outlet, and a clearing balloon 45 is fixedly provided at the bottom end of the drainage tube inner core 41, and the clearing balloon 45 and the gas injection head 43 are connected to each other.

[0039] The expansion diameter of the clearing balloon 45 is the same as the inner diameter of the drainage tube outer tube 11, and the clearing balloon 45 is an annular inflated structure after being inflated. The annular inflated balloon is used to remove foreign matter attached to the inside of the drainage tube outer tube 11 by friction. When the negative pressure drainage hole 13 of the drainage tube outer tube 11 is blocked, the medical staff can pull the drainage tube inner core 41 outward without removing the drainage tube outer tube 11, so that the drainage tube inner core 41 slides inside the drainage tube outer tube 11. Before pulling the drainage tube inner core 41, it is necessary to first Air is injected into the clearing balloon 45 through the air injection head 43. After being inflated, the clearing balloon 45 will swell in a ring shape. The diameter of the ring-shaped swelled clearing balloon 45 is the same as that of the drainage tube outer tube 11. The ring-shaped swelled clearing balloon 45 can be used to remove foreign matter attached to the inside of the drainage tube outer tube 11 by friction, thereby ensuring the patency of the inside of the drainage tube body. After the inside of the drainage tube outer tube 11 is unobstructed, the drainage tube outer tube 11 is connected to the drainage tube inner core 41 again to continue drainage. The drainage tube outer tube 11 is connected to the drainage tube inner core 41 through a nut structure.

[0040] The outer wall of the drainage tube inner core 41 below the gas injection head four 43 is fixedly provided with a limiting head two 42 whose diameter is larger than that of the drainage tube inner core 41, and a connecting protective sleeve 3 is fixedly provided below the limiting head two 42. The bottom of the connecting protective sleeve 3 is fixedly connected to the limiting head one 15, and the connecting protective sleeve 3, the limiting head two 42 and the limiting head one 15 constitute a sealing structure. The connecting protective sleeve 3 is an elastic film structure. Without removing the drainage tube outer tube 11, the medical staff pulls the drainage tube inner core 41 outward to make the drainage tube inner core 41 slide inside the drainage tube outer tube 11, and the two are protected by the connecting protective sleeve 3 to prevent bacteria from entering the drainage tube when the drainage tube inner core 41 is inserted and pulled out, causing abdominal cavity infection.

[0041] The outer sleeve of one end of the drainage tube outer tube 11 near the limit head 15 is provided with a skin-adaptive component 2 for pressing on the skin and completely sealing the gap between the skin structure. The skin-adaptive component 2 includes an outer skin balloon 21, a skin segment balloon 22 is arranged below the outer skin balloon 21, and an inner skin balloon 23 is arranged below the skin segment balloon 22. The outer skin balloon 21, the skin segment balloon 22 and the inner skin balloon 23 form an integrated structure.

[0042] The air inlet ends of the skin outer balloon 21, the skin segment balloon 22 and the skin inner balloon 23 are respectively provided with an air injection head 1 24, an air injection head 25 and an air injection head 3 26, and the expansion degree of the skin outer balloon 21, the skin segment balloon 22 and the skin inner balloon 23 is adjusted by air injection through the air injection head 1 24, the air injection head 25 and the air injection head 3 26, and the expansion structure of the skin outer balloon 21, the skin segment balloon 22 and the skin inner balloon 23 is dumbbell-shaped;

[0043] After the operation, different models of muscle-adaptive components 2 are selected according to the thickness of the skin, and the muscle-adaptive component 2 is inserted into the outer tube 11 of the abdominal drainage tube. The head end of the outer tube 11 of the drainage tube is placed in the surgical area, the position of the muscle-adaptive component 2 is adjusted, and the layers of tissue of the abdominal wall are sutured layer by layer. After the suturing is completed, the skin balloon 23 of the muscle-adaptive component 2 is filled, and then the skin balloon 21 is filled. The filled skin balloon 23 and the skin balloon 21 can fix the muscle-adaptive component 2 to the skin, and then the skin segment balloon 22 is filled. The filled fusiform skin segment balloon 22 can completely seal the gap between the muscle-adaptive component 2 and the skin structure, thereby preventing the leakage of peritoneal fluid.

[0044] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. An anti-blocking negative pressure abdominal drainage tube, comprising: An outer tube (11) of a drainage tube, wherein a stopper head (15) is provided at the top of the outer tube (11) of the drainage tube, and is characterized in that a plurality of outer grooves (12) are provided at one end of the outer wall of the drainage tube outer tube (11) inserted into the patient's body, and a plurality of negative pressure drainage holes (13) penetrating the outer tube (11) of the drainage tube are provided at the deepest point on the inner side of the outer grooves (12) to prevent the negative pressure in the outer tube (11) from directly acting on the tissue and sucking the tissue into the negative pressure drainage holes (13), thereby preventing the negative pressure in the outer tube (11) from directly acting on the tissue and causing the tissue to be sucked into the negative pressure drainage holes (13) and causing the negative pressure drainage holes (13) to be blocked; a plurality of inner grooves (14) are provided on the inner wall of the drainage tube outer tube (11) near the liquid outlet end of the drainage tube outer tube (11), and the plurality of inner grooves (14) and the plurality of outer grooves (12) are staggeredly distributed, thereby increasing the drainage cavity in a limited space, and even if the drainage tube is blocked by external force or pressure from surrounding tissues, the inner grooves (14) inside the drainage tube still have space; A drainage tube inner tube assembly (4) is inserted into the drainage tube outer tube (11), wherein the drainage tube inner tube assembly (4) comprises a drainage tube inner core (41) having a diameter smaller than the inner diameter of the drainage tube outer tube (11), and a length of the drainage tube inner core (41) greater than the length of the drainage tube outer tube (11); A plurality of inner core liquid absorption holes (44) are provided on the outer wall of the inner core (41) of the drainage tube near one end of the outer groove (12); the diameter of the inner core liquid absorption holes (44) is larger than the diameter of the negative pressure drainage holes (13) so as to reduce blockage during drainage to the outside of the body; A gas injection head (43) is fixedly provided on one side of the drainage tube inner core (41) close to the drainage outlet, a clearing balloon (45) is fixedly provided at the bottom end of the drainage tube inner core (41), and the clearing balloon (45) and the gas injection head (43) are in communication with each other; The expansion diameter of the clearing balloon (45) is the same as the inner diameter of the drainage tube outer tube (11), and the clearing balloon (45) is an annular bulging structure after being inflated. The annular bulging balloon is used to remove foreign matter attached to the inside of the drainage tube outer tube (11) by friction. A second limiting head (42) having a diameter larger than that of the inner core (41) of the drainage tube is fixedly arranged on the outer wall of the inner core (41) of the drainage tube below the fourth gas injection head (43); a connecting protective sleeve (3) is fixedly arranged below the second limiting head (42); the bottom of the connecting protective sleeve (3) is fixedly connected to the first limiting head (15); the connecting protective sleeve (3), the second limiting head (42) and the first limiting head (15) together form a sealing structure; the connecting protective sleeve (3) is an elastic film structure.

2. The anti-blocking negative pressure abdominal drainage tube according to claim 1, characterized in that: The plurality of outer grooves (12) and the ribs on both sides of the drainage tube outer tube (11) are of arc-shaped structure, and the bottom ends of the plurality of outer grooves (12) extend to the bottom end surface of the drainage tube outer tube (11), so as to reduce the resistance of the drainage tube outer tube (11) to the tissue when being pulled out. The top ends of the plurality of outer grooves (12) are all flat arc-shaped surfaces without angles, so as to reduce the damage to the tissue when the drainage tube outer tube (11) is inserted. The lowest end positions of the plurality of inner grooves (14) are higher than the highest end positions of the plurality of outer grooves (12).

3. The anti-blocking negative pressure abdominal drainage tube according to claim 1, characterized in that: The limit head 1 (15) has an I-shaped structure, and a liquid injection head (16) is fixedly arranged on one side of the limit head 1 (15). A liquid flushing channel (17) is provided inside the outer tube (11) of the drainage tube between the plurality of inner grooves (14), and the bottom end of the liquid flushing channel (17) is interconnected with the top end of the outer groove (12). The interior of the limit head 1 (15) is interconnected with the liquid flushing channel (17), and the plurality of liquid flushing channels (17) correspond to the plurality of outer grooves (12) one by one, so as to be used for injecting liquid into the outer grooves (12).

4. The anti-blocking negative pressure abdominal drainage tube according to claim 1, characterized in that: The outer sleeve of one end of the outer tube (11) of the drainage tube close to the limiting head (15) is provided with a skin-adapting component (2) for pressing on the skin and completely sealing the gap between the skin structure, the skin-adapting component (2) comprising an outer skin balloon (21), a skin segment balloon (22) being provided below the outer skin balloon (21), an inner skin balloon (23) being provided below the skin segment balloon (22), and the outer skin balloon (21), the skin segment balloon (22) and the inner skin balloon (23) are an integrated structure.

5. The anti-blocking negative pressure abdominal drainage tube according to claim 4, characterized in that: The air inlet ends of the outer skin balloon (21), the skin segment balloon (22) and the inner skin balloon (23) are respectively provided with an air injection head one (24), an air injection head two (25) and an air injection head three (26). The expansion degrees of the outer skin balloon (21), the skin segment balloon (22) and the inner skin balloon (23) are adjusted by individually injecting air through the air injection head one (24), the air injection head two (25) and the air injection head three (26). The expansion structures of the outer skin balloon (21), the skin segment balloon (22) and the inner skin balloon (23) are dumbbell-shaped.

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