CN111658843A

CN111658843A - Flushing and sucking drainage tube and flushing and sucking drainage system

Info

Publication number: CN111658843A
Application number: CN202010623668.7A
Authority: CN
Inventors: 王瑞涛; 乌宇亮; 牟怡平; 郭坤; 许莹
Original assignee: First Affiliated Hospital of Medical College of Xian Jiaotong University
Current assignee: First Affiliated Hospital of Medical College of Xian Jiaotong University
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-09-15

Abstract

The invention provides a flushing and sucking drainage tube and a flushing and sucking drainage system, wherein the flushing and sucking drainage tube comprises a suction tube, a bag sleeving tube and a flushing tube, the front end of the suction tube is provided with a liquid suction hole, and the rear end of the suction tube is provided with a suction connector; the cuff pipe is sleeved outside the suction pipe, the front end of the cuff pipe is provided with a liquid guide hole, the liquid guide hole corresponds to the liquid suction hole, and the rear end of the cuff pipe extends to the middle part of the suction pipe; the front end of the flushing pipe is connected with the front end of the cuff pipe; the front end of the flushing pipe is provided with a flushing hole, and the rear end of the flushing pipe is provided with a flushing joint; the sleeve bag tube is made of flexible material. Therefore, in the drainage process, the tissue residues generated in the flushing process are isolated to a certain extent through the cuff tube, and the tissue residues are prevented from being directly adsorbed on the liquid suction hole of the suction tube to cause blockage; the problem of drainage tube structural design defect among the prior art leads to blockking up easily is solved.

Description

Flushing and sucking drainage tube and flushing and sucking drainage system

Technical Field

The invention relates to the field of surgical equipment, in particular to a flushing and sucking drainage tube and a flushing and sucking drainage system.

Background

The drainage tube is a commonly used surgical instrument in surgical operations, the existing drainage tube can realize simultaneous irrigation and drainage, however, due to structural design defects and non-adjustable suction pressure, the existing drainage tube is very easy to block in the using process, and normal operation of the operation is affected. In addition, the existing drainage tube is hard in material, and in the using process, if the operation is improper, the injury of human organs or tissues is easily caused.

Disclosure of Invention

The invention mainly aims to provide a flushing and sucking drainage tube and a flushing and sucking drainage system, which at least solve the problem that the drainage tube in the prior art is easy to block due to structural design defects.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a wash-and-suction catheter comprising: the front end of the suction pipe is provided with a liquid suction hole, the rear end of the suction pipe is provided with a suction joint, and the suction joint is used for being connected with negative pressure suction equipment; the bag sleeving tube is sleeved outside the suction tube, the front end of the bag sleeving tube is provided with a liquid guide hole, the liquid guide hole corresponds to the liquid suction hole, and the rear end of the bag sleeving tube extends to the middle part of the suction tube; the front end of the flushing pipe is connected with the front end of the cuff pipe, and the flushing pipe extends along the length direction of the suction pipe; the front end of the flushing pipe is provided with a flushing hole, and the rear end of the flushing pipe is provided with a flushing joint which is used for being connected with flushing equipment; wherein, the cuff tube is made of flexible material.

Furthermore, the liquid suction hole is formed along the radial direction of the suction tube, and the liquid guide hole is formed along the radial direction of the capsule sleeving tube; the central line of the liquid pumping hole is perpendicular to the central line of the liquid guide hole.

Furthermore, the flushing holes are formed along the radial direction of the flushing pipe; wherein, the flushing hole is opposite to the liquid guide hole.

Furthermore, the liquid pumping holes and the washing holes are all multiple, and the liquid pumping holes are uniformly arranged at intervals along the length direction of the suction pipe; the plurality of flushing holes are arranged at intervals along the length direction of the flushing pipe.

Furthermore, the front end of the cuff tube is of a spherical structure, and the side wall of the front end of the flushing tube is tangent to the outer wall of the spherical structure.

Further, the flushing and sucking drainage tube also comprises: the wireless pressure sensing unit is arranged in the suction pipe and used for sensing the suction pressure in the suction pipe.

Further, the flushing and sucking drainage tube also comprises: the pressure regulating valve is arranged at the rear end part of the sleeve bag pipe and is used for plugging a gap between the rear end part of the sleeve bag pipe and the suction pipe; the pressure regulating valve regulates the suction pressure in the suction pipe by controlling the size of the valve opening.

According to a second aspect of the present invention, there is provided a flushing and suction drainage system comprising: the flushing and sucking drainage tube and the flushing and sucking drainage all-in-one machine are characterized in that the flushing and sucking drainage tube is the flushing and sucking drainage tube, and the flushing and sucking drainage all-in-one machine comprises a flushing device and a negative pressure suction device; wherein, the suction joint of the suction pipe of the flushing and sucking drainage pipe is connected with the negative pressure suction device, and the flushing joint of the flushing pipe of the flushing and sucking drainage pipe is connected with the flushing device.

Further, the flushing device comprises: the flushing liquid tank is used for storing flushing liquid; the flushing pump is arranged in the flushing liquid tank; one end of the output pipe is connected with the flushing pump, and the other end of the output pipe is connected with a flushing joint of the flushing pipe; wherein, the flushing pump during operation passes through the delivery line pump with the flush fluid in the flushing fluid case and sends to the flushing pipe.

Further, the negative pressure suction device comprises a first negative pressure pipe, a first negative pressure tank, a second negative pressure pipe, a second negative pressure tank, a third negative pressure pipe and a negative pressure pump; one end of the first negative pressure pipe is connected with the suction joint of the suction pipe, and the other end of the first negative pressure pipe extends into the first negative pressure tank; one end of the second negative pressure pipe extends into the first negative pressure tank, and the other end of the second negative pressure pipe extends into the second negative pressure tank; one end of the third negative pressure pipe extends into the second negative pressure tank, and the other end of the third negative pressure pipe is connected with the negative pressure pump; wherein, the negative pressure pump is used for pumping out the flushing liquid sprayed by the flushing pipe through the suction pipe when in work.

The flushing and sucking drainage tube applying the technical scheme of the invention comprises a suction tube, a bagging tube and a flushing tube, wherein the front end of the suction tube is provided with a liquid suction hole, the rear end of the suction tube is provided with a suction connector, and the suction connector is used for being connected with a negative pressure suction device; the cuff pipe is sleeved outside the suction pipe, the front end of the cuff pipe is provided with a liquid guide hole, the liquid guide hole corresponds to the liquid suction hole, and the rear end of the cuff pipe extends to the middle part of the suction pipe; the front end of the flushing pipe is connected with the front end of the cuff pipe, and the flushing pipe extends along the length direction of the suction pipe; the front end of the flushing pipe is provided with a flushing hole, and the rear end of the flushing pipe is provided with a flushing joint which is used for being connected with flushing equipment; wherein, the cuff tube is made of flexible material. Therefore, in the drainage process, the tissue residues generated in the flushing process are isolated to a certain extent through the cuff tube, and the tissue residues are prevented from being directly adsorbed on the liquid suction hole of the suction tube to cause blockage; meanwhile, the flexible cuff tube wraps the whole suction tube to prevent the suction tube from directly contacting with human organs or tissues, so that the human organs and tissues are protected. The problem of drainage tube structural design defect among the prior art leads to blockking up easily is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of an alternative embodiment of a suction/flushing draft tube according to the present invention;

FIG. 2 is a schematic view of a portion of the enlarged structure at A in FIG. 1; and

fig. 3 is a schematic structural diagram of an alternative flushing and suction drainage system according to an embodiment of the invention.

Wherein the figures include the following reference numerals:

10. a suction tube; 11. a liquid pumping hole; 12. a suction connection; 20. sleeving a bag tube; 21. a drain hole; 30. a flush tube; 31. flushing the hole; 32. flushing the joint; 40. a wireless pressure sensing unit; 50. a pressure regulating valve; 60. a flushing and sucking drainage tube; 70. a flushing, sucking and drainage integrated machine; 71. a flushing device; 711. a flushing fluid tank; 712. a flush pump; 713. an output pipe; 714. a liquid supplementing pipe; 72. a negative pressure suction device; 721. a first negative pressure tube; 722. a first negative pressure tank; 723. a second negative pressure tube; 724. a second negative pressure tank; 725. a third negative pressure pipe; 726. a negative pressure pump; 727. a blow-off pipe; 728. a sewage interception valve; 80. a wireless communication unit; 90. a controller; 100. a display screen.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The irrigation and suction drainage tube according to the embodiment of the invention, as shown in fig. 1 and fig. 2, comprises a suction tube 10, a cuff tube 20 and an irrigation tube 30, wherein the front end of the suction tube 10 is provided with a liquid suction hole 11, the rear end of the suction tube 10 is provided with a suction connector 12, and the suction connector 12 is used for connecting with a negative pressure suction device; the cuff tube 20 is sleeved outside the suction tube 10, the front end of the cuff tube 20 is provided with a liquid guide hole 21, the liquid guide hole 21 corresponds to the liquid suction hole 11, and the rear end of the cuff tube 20 extends to the middle part of the suction tube 10; the front end of the irrigation tube 30 is connected with the front end of the cuff tube 20, and the irrigation tube 30 extends along the length direction of the suction tube 10; the front end of the flushing pipe 30 is provided with a flushing hole 31, the rear end of the flushing pipe 30 is provided with a flushing joint 32, and the flushing joint 32 is used for being connected with flushing equipment; wherein the cuff tube 20 is made of a flexible material. Therefore, in the drainage process, the tissue residues generated in the flushing process are isolated to a certain extent through the cap tube 20, and the tissue residues are prevented from being directly adsorbed on the liquid suction hole 11 of the suction tube 10 to cause blockage; at the same time, the flexible cuff tube 20 integrally wraps the evacuation tube 10 and prevents the evacuation tube 10 from directly contacting the body organ or tissue, thereby protecting the body organ or tissue. The problem of drainage tube structural design defect among the prior art leads to blockking up easily is solved.

In specific implementation, the flushing device works to pump flushing liquid to the flushing pipe 30 at a certain pressure and spray the flushing liquid out through the flushing hole 31 so as to flush the tissue at the drainage part; when the negative pressure suction equipment works, negative pressure is generated in the suction pipe 10, and the flushed residual liquid firstly enters a gap part between the bagging pipe 20 and the suction pipe 10 through the liquid guide hole 21 of the bagging pipe 20 under the action of the negative pressure and then enters the suction pipe 10 through the liquid suction hole 11 to be sucked away. The capsular bag 20 not only filters the tissue residues, but also protects the human organs or tissues.

Specifically, the liquid pumping holes 11 and the flushing holes 31 are all multiple, and the liquid pumping holes 11 are uniformly arranged at intervals along the length direction of the suction pipe 10; the plurality of flushing holes 31 are opened at intervals along the longitudinal direction of the flushing pipe 30. Each liquid suction hole 11 is arranged along the radial direction of the suction pipe 10 and penetrates through the suction pipe 10 along the radial direction, the liquid guide hole 21 is arranged along the radial direction of the cuff pipe 20 and penetrates through the cuff pipe 20 along the radial direction, and the central line of the liquid suction hole 11 is perpendicular to the central line of the liquid guide hole 21, so that the liquid guide hole 21 and the liquid suction hole 11 are staggered from each other along the circumferential direction, and tissue residues are prevented from being directly adsorbed on the liquid suction hole 11 through the liquid guide hole 21. In order to ensure the drainage flow of the drainage holes 21 and simultaneously reduce the drainage holes 21 as much as possible relative to more of the liquid extraction holes 11, optionally, the drainage holes 21 are one and the diameter of the drainage holes 21 is larger than that of the liquid extraction holes 11, so that the drainage flow of the drainage holes 21 can be ensured, the diameter of the drainage holes 21 relative to more of the liquid extraction holes 11 can be reduced, and tissue residues are effectively prevented from being directly adsorbed on the liquid extraction holes 11 after passing through the drainage holes 21.

Furthermore, the flushing hole 31 is formed along the radial direction of the flushing pipe 30, and the flushing hole 31 is opposite to the liquid guide hole 21, so that tissue residues are effectively prevented from entering a gap part between the cuff pipe 20 and the suction pipe 10 through the liquid guide hole 21 in the flushing process, and the function of preventing blockage is further achieved.

In order to further reduce the damage to the human organs and tissues, the front end of the cuff tube 20 is of a spherical structure, and the side wall of the front end of the flushing tube 30 is tangent to the outer wall of the spherical structure, so that the side surface of the flushing tube 30 and the front end of the cuff tube 20 are in curved surface transition, and the damage to the human organs and tissues in the process of penetrating the drainage tube is further reduced.

In the working process of the drainage tube, in order to sense whether the suction tube 10 is blocked or not in real time and adjust the suction pressure of the suction tube 10 according to the blocking condition, the flushing and suction drainage tube further comprises a wireless pressure sensing unit 40 and a pressure adjusting valve 50, wherein the wireless pressure sensing unit 40 is arranged in the suction tube 10, and the wireless pressure sensing unit 40 is used for sensing the suction pressure in the suction tube 10 and sending a pressure value to a background processing unit through a wireless communication module; the pressure regulating valve 50 is arranged at the rear end part of the cuff tube 20, and the pressure regulating valve 50 seals the gap between the rear end part of the cuff tube 20 and the suction tube 10; the pressure regulating valve 50 regulates the suction pressure in the suction pipe 10 by controlling the size of the valve opening; a wireless communication module is also arranged inside the pressure regulating valve 50 so as to be connected and communicated with the background processing unit through a wireless signal; when the pressure value sensed by the wireless pressure sensing unit 40 is greater than the preset value, it is indicated that the blockage of the liquid guide hole 21 of the cuff tube 20 or the liquid suction hole 11 of the suction tube 10 is serious, at this time, the background processing unit controls the pressure regulating valve 50 to increase the valve opening, so that the gap between the cuff tube 20 and the suction tube 10 is communicated with the outside atmosphere more, the negative pressure of the gap between the cuff tube 20 and the suction tube 10 is reduced, the adsorption force of tissue residues on the liquid guide hole 21 is reduced, and the background processing unit controls the flushing pressure of the flushing tube 30 to be increased appropriately, so that the tissue residues adsorbed on the liquid guide hole 21 are flushed away, and further, the residual liquid rapidly enters the gap between the cuff tube 20 and the suction tube 10 to flush away the tissue residues on the liquid suction hole 11, so as to play a certain dredging role and effectively prevent blockage.

According to a second embodiment of the present invention, there is provided a flushing, sucking and drainage system, comprising a flushing, sucking and drainage tube 60 and a flushing, sucking and drainage integrated machine 70, wherein the flushing, sucking and drainage tube 60 is the flushing, sucking and drainage tube of the above embodiment, as shown in fig. 3, the flushing, sucking and drainage integrated machine 70 comprises a flushing device 71 and a negative pressure suction device 72; the suction connector 12 of the suction pipe 10 of the suction and flushing drainage pipe 60 is connected with the negative pressure suction device 72, and the irrigation connector 32 of the irrigation pipe 30 of the suction and flushing drainage pipe 60 is connected with the irrigation device 71. The flushing device 71 is operated to pump flushing fluid at a certain pressure to the flushing pipe 30 and to spray the flushing fluid out through the flushing holes 31 so as to flush the tissue at the drainage site; when the negative pressure suction device 72 works, negative pressure is generated in the suction pipe 10, and the flushed residual liquid firstly enters a gap between the cuff pipe 20 and the suction pipe 10 through the liquid guide hole 21 of the cuff pipe 20 under the action of the negative pressure, and then enters the suction pipe 10 through the liquid suction hole 11 to be sucked away. Thereby in the drainage process, play certain isolation to the tissue residue of the production of washing in-process through cover bag pipe 20, prevent that tissue residue direct adsorption from leading to blockking up on the drawing liquid hole 11 of suction tube 10, solved the drainage tube structural design defect among the prior art and lead to the problem of blockking up easily.

In specific implementation, the flushing device 71 comprises a flushing liquid tank 711, a flushing pump 712 and an output pipe 713, wherein the flushing liquid tank 711 is used for storing flushing liquid; the rinse pump 712 is disposed within the rinse tank 711; one end of the output pipe 713 is connected with the washing pump 712, and the other end of the output pipe 713 is connected with the washing joint 32 of the washing pipe 30; the irrigation pump 712 is operable to pump irrigation fluid from the tank 711 through the outlet conduit 713 to the irrigation tube 30 to irrigate tissue at the drainage site. In order to replenish the rinsing liquid tank 711 in time when the rinsing liquid tank 711 is short of the rinsing liquid, a replenishing pipe 714 is optionally further provided at the upper end of the rinsing liquid tank 711, and the rinsing liquid can be replenished to the rinsing liquid tank 711 in time through the replenishing pipe 714.

Further, the negative pressure suction device 72 includes a first negative pressure pipe 721, a first negative pressure tank 722, a second negative pressure pipe 723, a second negative pressure tank 724, a third negative pressure pipe 725, and a negative pressure pump 726; one end of the first negative pressure pipe 721 is connected to the suction joint 12 of the suction pipe 10, and the other end of the first negative pressure pipe 721 extends into the first negative pressure tank 722; one end of the second negative pressure pipe 723 extends into the first negative pressure tank 722, and the other end of the second negative pressure pipe 723 extends into the second negative pressure tank 724; one end of a third negative pressure pipe 725 extends into the second negative pressure tank 724, and the other end of the third negative pressure pipe 725 is connected with a negative pressure pump 726; the first negative pressure pipe 721, the second negative pressure pipe 723, and the third negative pressure pipe 725 are hermetically connected to the first negative pressure tank 722 and the second negative pressure tank 724, and the negative pressure pump 726 generates negative pressure in the first negative pressure tank 722 and the second negative pressure tank 724 when operating, thereby pumping out the residual flushing liquid after flushing through the suction pipe 10. The arrangement of the first negative pressure tank 722 and the second negative pressure tank 724 can play a role in guiding and buffering overflowing flushing residual liquid after the flushing residual liquid in the first negative pressure tank 722 overflows, and further play a role in protecting the negative pressure pump 726.

In order to discharge the flushing residual liquid after the flushing residual liquid in the first negative pressure tank 722 or the second negative pressure tank 724 is filled, further, a drain pipe 727 is arranged below the first negative pressure tank 722 and the second negative pressure tank 724, the inlet end of the drain pipe 727 is divided into two branch pipes which are correspondingly connected with the bottoms of the first negative pressure tank 722 and the second negative pressure tank 724, the outlet end of the drain pipe 727 extends to the outside of the flushing and sucking drainage integrated machine 70, two branch pipes at the inlet end of the drain pipe 727 are respectively provided with a sewage interception valve 728, after the flushing residual liquid in the first negative pressure tank 722 or the second negative pressure tank 724 is filled, the corresponding sewage interception valve 728 is opened to discharge the flushing residual liquid, and therefore the normal operation of the negative pressure suction device 72 is ensured.

In addition, in order to control the operation processes of the wireless pressure sensing unit 40 and the pressure regulating valve 50, the irrigation device 71 and the negative pressure suction device 72 on the irrigation and suction flow pipe 60, further, the irrigation and suction drainage system of the present embodiment further includes a wireless communication unit 80, a controller 90 and a display screen 100, a wireless communication module of the wireless pressure sensing unit 40 and a wireless communication module of the pressure regulating valve 50 are connected to the wireless communication unit 80, the wireless communication unit 80 is connected to the controller 90 so as to perform wireless communication between the wireless pressure sensing unit 40 and the pressure regulating valve 50 and the controller 90, the wireless pressure sensing unit 40 transmits the sensed pressure value to the controller 90, the controller 90 is connected to both the irrigation pump 712 of the irrigation device 71 and the negative pressure pump 726 of the negative pressure suction device 72 and the display screen 100, when the controller 90 receives the pressure value signal transmitted by the wireless pressure sensing unit 40, the pressure value signal is synchronized to the display screen 100 to be displayed, when the pressure value is larger than the preset value, the controller 90 controls the pressure regulating valve 50 to increase the valve opening, and controls the input power of the flushing pump 712 to properly increase the flushing pressure of the flushing pipe 30, so as to dredge the blockage of the liquid guide hole 21 of the cuff pipe 20 or the liquid suction hole 11 of the suction pipe 10. Alternatively, the controller 90 may control the input power to the negative pressure pump 726 to control the negative pressure in the aspiration line 10 as desired.

Optionally, the sewage interception valves 728 on the two branch pipes at the inlet end of the sewage draining pipe 727 are solenoid valves, and the controller 90 is also connected with the two sewage interception valves 728, so that the sewage draining process of the first negative pressure tank 722 or the second negative pressure tank 724 can be automatically controlled.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flushing and sucking drainage tube is characterized by comprising:

the suction pipe (10), the front end of the suction pipe (10) is provided with a liquid suction hole (11), the rear end of the suction pipe (10) is provided with a suction joint (12), and the suction joint (12) is used for being connected with negative pressure suction equipment;

the bag sleeving tube (20) is sleeved outside the suction tube (10), a liquid guide hole (21) is formed in the front end of the bag sleeving tube (20), the liquid guide hole (21) corresponds to the liquid suction hole (11), and the rear end of the bag sleeving tube (20) extends to the middle of the suction tube (10);

an irrigation tube (30), the front end of the irrigation tube (30) being connected to the front end of the cuff tube (20), the irrigation tube (30) extending in the longitudinal direction of the suction tube (10); a flushing hole (31) is formed in the front end of the flushing pipe (30), a flushing joint (32) is arranged at the rear end of the flushing pipe (30), and the flushing joint (32) is used for being connected with flushing equipment;

wherein the cuff tube (20) is made of a flexible material.

2. The flushing and suction drainage tube according to claim 1, characterized in that the liquid suction hole (11) is opened along the radial direction of the suction tube (10), and the liquid guide hole (21) is opened along the radial direction of the cuff tube (20);

the central line of the liquid extracting hole (11) is perpendicular to the central line of the liquid guide hole (21).

3. The flushing and suction drainage tube according to claim 2, characterized in that the flushing holes (31) are opened in the radial direction of the flushing tube (30);

wherein the flushing hole (31) is opposite to the liquid guide hole (21).

4. The flushing and suction drainage tube according to claim 1, characterized in that the liquid suction holes (11) and the flushing holes (31) are all multiple, and the liquid suction holes (11) are arranged at regular intervals along the length direction of the suction tube (10); the plurality of flushing holes (31) are arranged at intervals along the length direction of the flushing pipe (30).

5. The flushing and suction drainage tube according to claim 1, characterized in that the front end of the cuff tube (20) is of a spherical structure, and the side wall of the front end of the flushing tube (30) is tangential to the outer wall of the spherical structure.

6. The irrigation drain of claim 1 further comprising:

a wireless pressure sensing unit (40) disposed within the suction tube (10), the wireless pressure sensing unit (40) for sensing a suction pressure within the suction tube (10).

7. The irrigation drain of claim 6 further comprising:

a pressure regulating valve (50) provided at a rear end portion of the cuff tube (20), the pressure regulating valve (50) closing a gap between the rear end portion of the cuff tube (20) and the suction tube (10); the pressure regulating valve (50) regulates the suction pressure in the suction pipe (10) by controlling the size of the valve opening.

8. A flushing and aspirating drainage system, comprising: the washing and sucking drainage pipe (60) and the washing and sucking drainage integrated machine (70), wherein the washing and sucking drainage pipe (60) is the washing and sucking drainage pipe in any one of claims 1 to 7, and the washing and sucking drainage integrated machine (70) comprises a washing device (71) and a negative pressure suction device (72);

wherein the suction connector (12) of the suction pipe (10) of the flushing and suction drainage pipe (60) is connected with the negative pressure suction device (72), and the flushing connector (32) of the flushing pipe (30) of the flushing and suction drainage pipe (60) is connected with the flushing device (71).

9. The flushing and suction drainage system according to claim 8, characterized in that the flushing device (71) comprises:

a flushing liquid tank (711), the flushing liquid tank (711) being used for storing flushing liquid;

a flush pump (712) disposed within the flush fluid tank (711);

an output pipe (713), one end of the output pipe (713) is connected with the washing pump (712), and the other end of the output pipe (713) is connected with a washing joint (32) of the washing pipe (30);

wherein the flushing pump (712) is operated to pump the flushing liquid in the flushing liquid tank (711) to the flushing pipe (30) through the output pipe (713).

10. The irrigation and drainage system according to claim 8, wherein the negative pressure suction device (72) comprises a first negative pressure tube (721), a first negative pressure tank (722), a second negative pressure tube (723), a second negative pressure tank (724), a third negative pressure tube (725), and a negative pressure pump (726); one end of the first negative pressure pipe (721) is connected with the suction joint (12) of the suction pipe (10), and the other end of the first negative pressure pipe (721) extends into the first negative pressure tank (722); one end of the second negative pressure pipe (723) extends into the first negative pressure tank (722), and the other end of the second negative pressure pipe (723) extends into the second negative pressure tank (724); one end of the third negative pressure pipe (725) extends into the second negative pressure tank (724), and the other end of the third negative pressure pipe (725) is connected with the negative pressure pump (726);

wherein the negative pressure pump (726) pumps out the flushing liquid sprayed by the flushing pipe (30) through the suction pipe (10) when working.