Double-channel negative pressure flushing device with alarm function

Abstract

The invention discloses a double-channel negative pressure flushing device with an alarm function, and particularly relates to the technical field of peritoneal flushing, the double-channel negative pressure flushing device comprises a double sleeve, a flushing pipe of the double sleeve is connected with a flushing pipeline, and a suction pipe of the double sleeve is connected with a negative pressure drainage assembly through a drainage pipe fitting; the drainage pipe fitting comprises a drainage pipe and an outer sleeve arranged on the outer side of the drainage pipe in a sleeving mode, a plurality of first steel wire rings are arranged on the inner wall of the outer sleeve, a plurality of inner supporting pieces are fixed to the drainage pipe and used for reducing the probability that the drainage pipe is bent and blocked, and an outer protection assembly is arranged on the outer side of the double sleeves. The probability that the double sleeves and the drainage tube are bent and blocked is low, and an alarm can be given when the double sleeves and the drainage tube are bent and blocked and the collection container is about to be full of liquid, so that normal flushing work is guaranteed, and the treatment effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of abdominal cavity flushing, and in particular to a dual-channel negative pressure flushing device with an alarm function. Background Art

[0002] Negative pressure peritoneal irrigation is a clinical technique used to treat complications such as intra-abdominal infection, effusion, or gastrointestinal fistula. It is primarily used to remove contaminants, blood accumulation, or necrotic tissue from the abdominal cavity, reducing the risk of infection and promoting wound healing. It is usually equipped with a double cannula for dual-channel irrigation. The water inlet of the double cannula is responsible for continuously perfusing physiological saline or other irrigation fluid to dilute pus, digestive fluid, and necrotic tissue. The suction tube of the double cannula is responsible for connecting to a negative pressure device to continuously aspirate the irrigation fluid, intra-abdominal exudate, and necrotic material. Through continuous irrigation and negative pressure drainage, the accumulated fluid and necrotic tissue in the wound cavity can be promptly and thoroughly removed, thereby ensuring efficient drainage of the wound and abscess cavity, promoting wound cavity reduction and wound healing. Examples include a dual-channel irrigation aspirator with announcement number CN216798354U and a dual-channel negative pressure aspirator for laparoscopic surgery with announcement number CN221845624U.

[0003] At present, the abdominal negative pressure flushing device has the following problems in clinical use:

[0004] 1. The tubing is prone to bending due to changes in the patient's body position or improper operation, which can lead to the failure of negative pressure. Fluid accumulation, necrotic tissue and other impurities can easily accumulate in the patient's wound, causing harm to the patient.

[0005] 2. When too much fluid accumulates in the negative pressure collection container, medical staff cannot be informed in time, resulting in the container not being replaced in time, which can easily cause liquid backflow, not only polluting the environment, but also easily affecting the negative pressure flushing work and reducing the treatment effect. Summary of the Invention

[0006] The purpose of the present invention is to provide a dual-channel negative pressure flushing device with an alarm function. The probability of the double sleeves and drainage tubes of the present invention being bent and blocked is low, and an alarm can be issued when the double sleeves and drainage tubes are bent and blocked, and when the liquid in the collection container is about to be full, so as to ensure the normal flushing work and the treatment effect.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a dual-channel negative pressure flushing device with an alarm function, including a double sleeve, the double sleeve is a Li double sleeve, which is composed of a suction tube, a porous external flushing tube and a water inlet pipe. The flushing tube of the double sleeve is connected to the flushing pipeline, and the suction tube of the double sleeve is connected to the negative pressure drainage assembly through a drainage pipe fitting.

[0008] The drainage tube fitting includes a drainage tube and an outer sleeve arranged on the outside of the drainage tube. The inner wall of the outer sleeve is provided with multiple steel wire rings. Multiple internal support members are fixed on the drainage tube to reduce the probability of bending and clogging of the drainage tube. The steel wire rings and the internal support members increase the strength and durability of the outer sleeve, making it have better pressure resistance and reducing the probability of bending of the outer sleeve, thereby reducing the probability of bending of the drainage tube.

[0009] An outer protective component is provided on the outside of the double sleeve to reduce the probability of the double sleeve being bent.

[0010] Preferably, the negative pressure drainage assembly includes a support base and a collection container placed in the support base, the collection container is provided with an upper cover on the top, and a liquid level gauge is fixed on the upper cover, and the liquid level gauge is preferably a non-contact liquid level gauge, which is a device that measures the liquid level height in the container through external sensing technology without direct contact with the liquid;

[0011] For example, radar level gauge: it transmits microwaves and receives the reflected signal from the liquid surface, and calculates the time difference to determine the liquid level;

[0012] Ultrasonic level meter: uses the time difference of sound wave reflection to calculate the liquid level;

[0013] Laser level meter: emits a laser beam and detects the time difference of the reflected light;

[0014] Principle of ray level gauge: The liquid level is determined by the attenuation of the gamma ray after it penetrates the medium.

[0015] Preferably, a liquid inlet pipe and a negative pressure connecting pipe are fixed on the upper cover, one end of the drainage pipe is connected to the double-tube suction pipe, and the other end of the drainage pipe is connected to the liquid inlet pipe; a negative pressure pump is fixed on one side of the support base. The negative pressure pump is a device that can continuously generate vacuum or negative pressure (relative to atmospheric pressure) at the inlet through an air suction nozzle. Its core function is to form a stable low-pressure environment;

[0016] The negative pressure connecting tube is connected to the air inlet pipe of the negative pressure pump through the negative pressure tube, which is convenient for drawing negative pressure into the collection container. The flushing fluid, intra-abdominal exudate and necrotic material are drained into the collection container, realizing continuous flushing and negative pressure drainage, and being able to timely and thoroughly remove the accumulated fluid and necrotic tissue in the wound cavity, thereby ensuring efficient drainage of the wound surface and abscess cavity, and promoting the reduction of the wound cavity and healing of the wound.

[0017] Preferably, a threaded rod is threadedly connected to one side of the top of the support seat, and the bottom of the threaded rod is rotatably connected to the top of the upper cover for adjusting the height of the upper cover so as to cover the top of the collection container, and a sealing ring for sealing the collection container is fixed to the bottom of the upper cover.

[0018] Preferably, the two sides of the upper cover are slidably connected to the two side walls inside the support seat through sliding rails, and guide rods are provided on both sides of the top of the upper cover. The bottom of the guide rods is fixedly connected to the four corners of the top of the upper cover, and the guide rods are slidably connected to the support seat to guide the up and down movement of the upper cover.

[0019] Preferably, the inner support member includes a connecting ring and at least one airbag fixed to the outer wall of the connecting ring, and the interior of the airbag is communicated with the interior of the connecting ring.

[0020] Preferably, a short tube is fixed to one end of the outer sleeve close to the liquid inlet pipe, a branch tube is fixed to the outside of the negative pressure connecting tube, and a valve is fixed on the branch tube. The branch tube is connected to the short tube through a connecting tube, and a pressure gauge 2 for monitoring the air pressure in the outer sleeve is fixed on the branch tube; during negative pressure drainage, negative pressure is generated in the outer sleeve, causing the drainage tube to expand outward, reducing the probability of the drainage tube bending and clogging; at the same time, the airbag expands outward to squeeze the outer sleeve outward, reducing the probability of the outer sleeve bending.

[0021] Preferably, the outer protection component includes an outer tube and an inner tube which are sleeved on the outside of the double tube, one end of the inner tube extends into the outer tube, and two steel wire rings are fixed to the inner walls of the outer tube and the inner tube, which increases the strength and durability of the outer tube and the inner tube, makes them have better pressure resistance, reduces the probability of bending of the outer tube and the inner tube, thereby reducing the probability of bending of the double tube, so as to ensure the normal flushing work.

[0022] Preferably, a pressure gauge 1 is fixed on the negative pressure connecting pipe, and the pressure gauge 1 is used to monitor the air pressure value in the collection container (usually controlled at 80-120 mmHg). A controller is fixed on one side of the support base, and the controller is arranged on the front side of the negative pressure pump; an alarm is fixed on one side of the support base at the top position of the controller, and the pressure gauge 1 and the pressure gauge 2 are both connected to the input end of the controller, and the alarm and the negative pressure pump are both connected to the output end of the controller; when the double sleeve is bent, and the drainage tube is bent or blocked, the pressure gauge 1 detects that the air pressure in the collection container has changed, and the controller activates the alarm to alarm.

[0023] Preferably, the liquid level meter is connected to the input end of the controller. When the liquid level meter detects that the distance between it and the liquid level of the collection container is less than a preset distance, the controller activates the alarm to sound an alarm, indicating that the collection container is about to be full. The controller activates the alarm to sound an alarm and promptly reminds medical staff to replace the collection container.

[0024] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0025] 1. During negative pressure flushing, the flushing fluid, intra-abdominal exudate and necrotic material are drained into the collection container. The liquid level in the collection container is monitored by a liquid level gauge. When the collection container is about to be full, the alarm will sound to remind medical staff to replace the collection container in time to avoid the backflow of liquid in the collection container and pollute the environment, affect the negative pressure flushing work, and reduce the treatment effect.

[0026] 2. During negative pressure flushing, negative pressure is also generated in the space between the outer wall of the drainage tube and the inner wall of the outer sleeve, causing the drainage tube to expand outward. At the same time, the airbag expands outward to squeeze the outer sleeve outward to support the outer sleeve. Combined with the built-in steel wire ring of the outer sleeve, the strength, pressure resistance and durability of the outer sleeve are increased, and the probability of bending and clogging of the drainage tube is reduced, thereby ensuring normal flushing.

[0027] At the same time, an external protection component is provided on the outside of the double sleeve, and the external protection component also has a built-in wire ring, which increases the strength, pressure resistance and durability of the external protection component, and reduces the probability of bending of the external protection component and the double sleeve to ensure the normal flushing work.

[0028] 3. When the double cannula is bent, or the drainage tube is bent or blocked, the pressure gauge detects a change in the air pressure in the collection container and the alarm is activated to promptly remind medical staff to take measures to avoid harm to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the overall structural diagram of the present invention;

[0030] Figure 2 This is a structural diagram of the negative pressure drainage component of the present invention;

[0031] Figure 3 is a cross-sectional view of the negative pressure drainage assembly of the present invention;

[0032] Figure 4 This is a structural diagram of the top surface of the upper cover of the present invention;

[0033] Figure 5 This is a structural diagram of the bottom surface of the upper cover of the present invention;

[0034] Figure 6 It is a partial cross-sectional view of the drainage pipe of the present invention;

[0035] Figure 7 is a cross-sectional view of the inner support member of the present invention;

[0036] Figure 8 is a cross-sectional view of the outer protection assembly of the present invention;

[0037] Figure 9 This is a connection diagram of the controller, liquid level gauge, negative pressure pump, pressure gauge 1, alarm and pressure gauge 2 of the present invention.

[0038] Description of reference numerals:

[0039] 1 double sleeve;

[0040] 2 negative pressure drainage assembly, 21 support base, 22 collection container, 23 upper cover, 24 liquid level gauge, 25 liquid inlet pipe;

[0041] 26 negative pressure connecting pipe, 261 branch pipe, 262 valve, 263 air pressure gauge 2;

[0042] 27 negative pressure pump, 28 negative pressure tube, 29 threaded rod, 210 guide rod, 211 pressure gauge 1, 212 alarm, 213 sealing ring;

[0043] 3 drainage tube fittings, 31 drainage tube, 32 outer sleeve, 33 wire ring 1, 34 inner support member, 341 connecting ring, 342 air bag;

[0044] 4 outer protection assembly, 41 outer tube, 42 inner tube, 43 wire ring 2;

[0045] 5 controllers, 6 connecting pipes. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] The present invention provides Figure 1-9 The double-channel negative pressure flushing device with alarm function shown in the figure includes a double cannula 1, which is the Li double cannula, consisting of a suction tube, a porous external flushing tube and a water inlet pipe: the suction tube is placed in the center and connected to the negative pressure drainage component 2 through the drainage pipe 3. The drainage pipe 3 includes a drainage tube 31, which is used to continuously suck out exudate, pus and necrotic tissue; the porous external flushing tube wraps the suction tube, and small holes are evenly distributed on the surface to prevent tissue blockage and protect the abdominal cavity tissue from direct negative pressure damage; the external flushing tube is connected to the flushing pipeline on the side, which is used to continuously or intermittently flush the drainage area, dilute the pus and keep the drainage unobstructed.

[0048] Specifically, such as Figure 1-Figure 5 As shown, the negative pressure drainage component 2 includes a support base 21 and a collection container 22 placed in the support base 21. The top of the collection container 22 is provided with an upper cover 23, and the bottom of the upper cover 23 is fixed with a sealing ring 213 for sealing the collection container 22.

[0049] A threaded rod 29 is threadedly connected to one side of the top of the support base 21. The bottom of the threaded rod 29 is rotatably connected to the top of the upper cover 23. The sides of the upper cover 23 are slidably connected to the inner side walls of the support base 21 via slide rails. Guide rods 210 are provided on both sides of the top of the upper cover 23. The bottom of the guide rods 210 are fixedly connected to the four corners of the top of the upper cover 23, and the guide rods 210 are slidably connected to the support base 21.

[0050] The collecting container 22 is placed on the supporting base 21 , and the upper cover 23 can be driven downward by rotating the threaded rod 29 , thereby adjusting the height of the upper cover 23 to cover and seal the top of the collecting container 22 . The present invention can adapt to containers of different sizes and has a wide range of applications.

[0051] Next, a liquid inlet pipe 25 and a negative pressure connecting pipe 26 are fixed on the upper cover 23, one end of the drainage pipe 31 is connected to the suction pipe of the double sleeve 1, and the other end of the drainage pipe 31 is connected to the liquid inlet pipe 25, a negative pressure pump 27 is fixed on one side of the support seat 21, the negative pressure connecting pipe 26 is connected to the air inlet pipe of the negative pressure pump 27 through the negative pressure pipe 28, and a pressure gauge 211 is fixed on the negative pressure connecting pipe 26, and the pressure gauge 211 is used to monitor the air pressure value in the collection container 22 (usually controlled at 80-120 mmHg).

[0052] A controller 5 is fixed on one side of the support base 21. The controller 5 is arranged in front of the negative pressure pump 27. The negative pressure pump 27 is connected to the output end of the controller 5, and the pressure gauge 211 is connected to the input end of the controller 5.

[0053] During use, after the upper cover 23 is placed on the collecting container 22, the liquid inlet pipe 25 and the negative pressure connecting pipe 26 are connected to the collecting container 22, and then the drainage pipe 31 is connected to the liquid inlet pipe 25 and the suction pipe of the double cannula 1, and the flushing pipe of the double cannula 1 is connected to the flushing pipe, and then the double cannula 1 is placed in the abdominal cavity, and then the negative pressure pump 27 is started to pump negative pressure into the collecting container 22. At the same time, the flushing pipe continuously infuses physiological saline or other flushing fluid into the abdominal cavity to dilute pus, digestive fluid and necrotic tissue. The flushing fluid and intra-abdominal exudate and necrotic material are drained into the collecting container 22 through the double cannula 1, the drainage pipe 31 and the liquid inlet pipe 25, thereby realizing continuous flushing and negative pressure drainage, which can timely and thoroughly remove the accumulated fluid and necrotic tissue in the wound cavity, thereby ensuring efficient drainage of the wound surface and pus cavity, and promoting the reduction of the wound cavity and healing of the wound.

[0054] Furthermore, a liquid level gauge 24 is fixed to the upper cover 23. The liquid level gauge 24 is connected to the input terminal of the controller 5. When the upper cover 23 is placed on the collection container 22, the liquid level gauge 24 is located at the top of the collection container 22. The liquid level gauge 24 is a non-contact liquid level gauge, such as a radar level gauge. The radar level gauge transmits high-frequency electromagnetic waves through an antenna. After the electromagnetic waves contact the liquid surface, they are reflected back to the receiver. The instrument calculates the time difference between the transmitted wave and the reflected wave, combined with the propagation speed of the radar wave, to calculate the distance between the liquid level gauge and the liquid surface.

[0055] Next, an alarm 212 is fixed on one side of the support base 21 at the top position of the controller 5, and the alarm 212 is connected to the output end of the controller 5; when the liquid level meter 24 detects that the distance between it and the liquid level of the collection container 22 is less than the preset distance, it indicates that the collection container 22 is about to be full, and the controller 5 activates the alarm 212 to sound an alarm and promptly remind medical staff to replace the collection container 22.

[0056] like Figure 6 As shown, an outer sleeve 32 is provided on the outside of the drainage tube 31, and a plurality of steel wire rings 33 are provided on the inner wall of the outer sleeve 32. The drainage tube 31 and the outer sleeve 32 are both hoses. A plurality of inner supports 34 are fixed on the drainage tube 31. Figure 7 As shown, the inner support member 34 includes a connecting ring 341 and at least one air bag 342 fixed to the outer wall of the connecting ring 341 , and the interior of the air bag 342 is communicated with the interior of the connecting ring 341 .

[0057] A short tube is fixed to one end of the outer sleeve 32 close to the liquid inlet pipe 25, a branch pipe 261 is fixed to the outside of the negative pressure connecting pipe 26, and a valve 262 is fixed on the branch pipe 261. The branch pipe 261 is connected to the short tube through a connecting pipe 6, and a second pressure gauge 263 for monitoring the air pressure in the outer sleeve 32 is fixed on the branch pipe 261. The second pressure gauge 263 is connected to the input end of the controller 5.

[0058] During negative pressure drainage, the valve 262 is opened. The space between the outer wall of the drainage tube 31 and the inner wall of the outer sleeve 32 is connected to the negative pressure connecting pipe 26 via the short tube, the connecting pipe 6, and the branch pipe 261. This generates negative pressure in the space between the outer wall of the drainage tube 31 and the inner wall of the outer sleeve 32. At this time, the pressure inside the drainage tube 31 is greater than the pressure outside the drainage tube 31, causing the drainage tube 31 to expand outward, thereby reducing the probability of the drainage tube 31 being squeezed and bent, and also reducing the probability of the drainage tube 31 being squeezed and reduced in inner diameter, resulting in blockage.

[0059] At the same time, the pressure inside the airbag 342 is greater than the pressure outside the airbag 342, so that the airbag 342 expands outward to squeeze the outer sleeve 32 outward to support the outer sleeve 32. Combined with the built-in steel wire ring 33 of the outer sleeve 32, the strength and durability of the outer sleeve 32 are increased, making it have better pressure resistance, reducing the probability of the outer sleeve 32 bending, thereby reducing the probability of the drainage tube 31 bending, to ensure the normal flushing work.

[0060] like Figure 1 and Figure 8 As shown, an outer protection component 4 is provided on the outside of the double cannula 1, and the outer protection component 4 includes an outer tube 41 and an inner tube 42 which are sleeved on the outside of the double cannula 1. One end of the inner tube 42 extends into the outer tube 41. The outer tube 41 and the inner tube 42 can slide relative to each other to adjust the length of the outer protection component 4, so as to protect the section of the double cannula 1 extending outside the patient's body.

[0061] Moreover, the outer tube 41 and the inner tube 42 are both hoses, and the inner walls of the outer tube 41 and the inner tube 42 are fixed with a wire ring 43, which increases the strength and durability of the outer tube 41 and the inner tube 42, makes them have better pressure resistance, and reduces the probability of bending of the outer tube 41 and the inner tube 42, thereby reducing the probability of bending of the double tube 1 to ensure the normal flushing work.

[0062] When the double cannula 1 is bent, and the drainage tube 31 is bent or blocked, the pressure gauge 211 detects a change in the air pressure in the collection container 22, and the controller 5 activates the alarm 212 to sound an alarm, so as to promptly remind medical staff to take measures to avoid harm to the patient.

[0063] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A dual-channel negative pressure flushing device with an alarm function, comprising a double sleeve (1), wherein the flushing pipe of the double sleeve (1) is connected to the flushing pipeline, characterized in that: The suction tube of the double cannula (1) is connected to the negative pressure drainage assembly (2) via a drainage pipe (3); The drainage pipe (3) comprises a drainage pipe (31) and an outer sleeve (32) sleeved on the outside of the drainage pipe (31); the inner wall of the outer sleeve (32) is provided with a plurality of steel wire rings (33); and a plurality of inner support members (34) are fixed on the drainage pipe (31) to reduce the probability of bending and clogging of the drainage pipe (31); An outer protective component (4) is provided on the outside of the double sleeve (1) to reduce the probability of the double sleeve (1) bending.

2. A dual-channel negative pressure flushing device with an alarm function according to claim 1, characterized in that: The negative pressure drainage assembly (2) comprises a support base (21) and a collection container (22) placed in the support base (21); an upper cover (23) is provided on the top of the collection container (22), and a liquid level gauge (24) is fixed on the upper cover (23).

3. A dual-channel negative pressure flushing device with an alarm function according to claim 2, characterized in that: A liquid inlet pipe (25) and a negative pressure connecting pipe (26) are fixed on the upper cover (23); one end of the drainage pipe (31) is connected to the suction pipe of the double sleeve (1), and the other end of the drainage pipe (31) is connected to the liquid inlet pipe (25); A negative pressure pump (27) is fixed to one side of the support seat (21), and the negative pressure connecting pipe (26) is connected to the air inlet pipe of the negative pressure pump (27) through a negative pressure pipe (28), so as to facilitate the extraction of negative pressure in the collection container (22) so as to drain the flushing water into the collection container (22).

4. The dual-channel negative pressure flushing device with an alarm function according to claim 2, characterized in that: A threaded rod (29) is threadedly connected to one side of the top of the support seat (21), and the bottom of the threaded rod (29) is rotatably connected to the top of the upper cover (23) for adjusting the height of the upper cover (23) so as to cover the top of the collection container (22). A sealing ring (213) for sealing the collection container (22) is fixed to the bottom of the upper cover (23).

5. The dual-channel negative pressure flushing device with alarm function according to claim 4, characterized in that: The two sides of the upper cover (23) are slidably connected to the inner two side walls of the support seat (21) via slide rails. Guide rods (210) are provided on both sides of the top of the upper cover (23). The bottom of the guide rods (210) is fixedly connected to the four corners of the top of the upper cover (23), and the guide rods (210) are slidably connected to the support seat (21).

6. The dual-channel negative pressure flushing device with an alarm function according to claim 3, characterized in that: The inner support member (34) comprises a connecting ring (341) and at least one air bag (342) fixed to the outer wall of the connecting ring (341), and the interior of the air bag (342) is communicated with the interior of the connecting ring (341).

7. The dual-channel negative pressure flushing device with alarm function according to claim 6, characterized in that: A short tube is fixed to one end of the outer sleeve (32) close to the liquid inlet pipe (25), a branch pipe (261) is fixed to the outside of the negative pressure connecting pipe (26), and a valve (262) is fixed to the branch pipe (261), the branch pipe (261) is connected to the short tube via a connecting pipe (6), and a second pressure gauge (263) for monitoring the air pressure in the outer sleeve (32) is fixed to the branch pipe (261); During negative pressure drainage, negative pressure is generated in the outer sleeve (32), causing the drainage tube (31) to expand outward, thereby reducing the probability of the drainage tube (31) being bent or blocked; At the same time, the airbag (342) expands outward to squeeze the outer sleeve (32) outward, reducing the probability of the outer sleeve (32) bending.

8. The dual-channel negative pressure flushing device with an alarm function according to claim 1, characterized in that: The outer protection assembly (4) comprises an outer tube (41) and an inner tube (42) which are sleeved on the outside of the double tube (1); one end of the inner tube (42) extends into the outer tube (41); and a second steel wire ring (43) is fixed to the inner walls of the outer tube (41) and the inner tube (42) to reduce the probability of bending of the outer tube (41), the inner tube (42) and the double tube (1).

9. The dual-channel negative pressure flushing device with alarm function according to claim 7, characterized in that: A pressure gauge (211) is fixed on the negative pressure connecting pipe (26), a controller (5) is fixed on one side of the support base (21), and the controller (5) is arranged on the front side of the negative pressure pump (27); An alarm (212) is fixed on one side of the support base (21) at the top of the controller (5); the first barometer (211) and the second barometer (263) are both connected to the input end of the controller (5); and the alarm (212) and the negative pressure pump (27) are both connected to the output end of the controller (5); When the double sleeve (1) is bent, and the drainage tube (31) is bent or blocked, the pressure gauge (211) detects that the air pressure in the collection container (22) has changed, and the controller (5) activates the alarm (212) to sound an alarm.

10. The dual-channel negative pressure flushing device with alarm function according to claim 9, characterized in that: The liquid level meter (24) is connected to the input end of the controller (5). When the liquid level meter (24) detects that the distance between the liquid level meter (24) and the liquid level of the collection container (22) is less than a preset distance, the controller (5) activates the alarm (212) to sound an alarm.

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