CN212547792U - Negative pressure drainage monitoring system - Google Patents

Abstract

The utility model discloses a negative pressure drainage monitoring system, which comprises a control main body, a collecting container, a drainage tube and a separator, wherein the control main body is detachably connected with the collecting container, one end of the drainage tube is communicated with the collecting container, and the other end of the drainage tube is communicated with the separator; the control main body is respectively provided with a negative pressure measuring and controlling system and a drainage flushing system; the negative pressure measuring and controlling system is used for detecting and controlling the negative pressure in the chest cavity or the wound surface of the patient, and the drainage flushing system is used for flushing the drainage cavity. This equipment can not only real-time supervision patient's thorax or the negative pressure condition of the surface of a wound, for medical personnel provide the accurate data that the patient recovered the condition, can also wash the drainage chamber, avoid the drainage chamber to block up.

Description

Negative pressure drainage monitoring system

Technical Field

The utility model relates to the field of medical equipment, more specifically say, it relates to a negative pressure drainage monitored control system.

Background

Closed thoracic drainage or wound drainage is a common clinical operation in thoracic surgery, and is an effective method for treating empyema, traumatic hemothorax, pneumothorax and spontaneous pneumothorax. At present, the drainage device of the pleural effusion in China mainly comprises drainage bag drainage, water-sealed bottle negative pressure drainage and the like, and the drainage mode is also divided into an intercostal tubule intubation method, an intercostal thick tube intubation method and a ribbed bed intubation method according to the illness state of a patient. These methods mainly use the traditional way of manual syringe extraction. But there is the shortcoming in current drainage device and drainage mode, as follows:

1. the drainage bag drainage and the water seal bottle drainage can not regulate the negative pressure of the thoracic cavity of the patient, and are not beneficial to the recovery of the patient.

2. The negative pressure condition of current pleural effusion drainage ware unable real-time supervision patient thorax consequently can't provide the quantization data of patient's recovery condition for medical personnel, increases the degree of difficulty to medical personnel's judgement.

3. The existing pleural effusion drainage device cannot quantitatively monitor the air leakage condition of the thoracic cavity of a patient in real time, so that the thoracic cavity condition of the patient cannot be provided for medical personnel in real time, and the best treatment opportunity can be missed.

4. The drainage condition of pleural effusion of a patient can not be quantitatively monitored in real time by the conventional pleural effusion drainage device, so that the extubation opportunity of the patient can not be scientifically evaluated, and the treatment period of the patient is increased.

5. The easy pustule, the clot that drains in the thorax of the pipeline of current pleural effusion drainage ware block up to can't reach the effect that lasts the drainage, need medical personnel manually to dredge the pipeline this moment, bring very big inconvenience for medical personnel.

6. The existing wound surface drainage equipment cannot realize accurate and rapid control on negative pressure, cannot control the wound surface negative pressure in a trapezoidal wave or sine wave negative pressure control mode, and increases the treatment recovery period of a patient.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims to provide a negative pressure drainage monitored control system, it can solve the above-mentioned technical problem who says.

The above technical purpose of the present invention can be achieved by the following technical solutions: the negative pressure drainage monitoring system comprises a control main body, a collection container, a drainage tube and a separator, wherein the control main body is detachably connected with the collection container, one end of the drainage tube is communicated with the collection container, and the other end of the drainage tube is communicated with the separator;

the control main body is respectively provided with an air path pressure measuring system and a drainage flushing system; the collecting container comprises a container body, a collecting cavity is arranged in the container body, a collecting hole and an air vent are arranged in the collecting cavity, a collecting interface which is respectively communicated with the collecting hole and the air vent is arranged outside the container body, an auxiliary interface which is communicated with a drainage flushing system and a drainage interface which is communicated with a negative pressure measuring and controlling system are respectively arranged on the end surface of the container body, the auxiliary interface is communicated with the air vent, and the drainage interface is communicated with the collecting cavity;

the drainage tube comprises a drainage cavity and a ventilation cavity, the drainage cavity is communicated with the collection hole, and the ventilation cavity is communicated with the ventilation hole;

the separator includes upper cover, lower cover and barrier film, upper cover and lower cover lock joint and both combine to be formed with the isolation chamber, the integrative drainage tube that is provided with is covered down, the inside of drainage tube one end is provided with the gaseous end cap of shutoff and sets up and keeps apart the through-hole of chamber intercommunication, the barrier film is arranged in the isolation chamber and sets up with the inner wall laminating of lower cover, the lower cover is opened and is equipped with intercommunication drainage tube and the interface of keeping apart the chamber, be provided with the one-way closure that can open or close on the barrier film, one-way closure is located the interface, and when the atmospheric pressure value of keeping apart the chamber was higher than the atmospheric pressure value of drainage tube, then one-way closure opened the intercommunication and keeps apart chamber and drainage tube.

The device mainly aims at regulating and controlling the negative pressure of the thoracic cavity of a patient and simultaneously can accurately monitor the negative pressure condition of the thoracic cavity of the patient in real time; therefore, the traditional single-cavity drainage tube is arranged into a double cavity, the drainage cavity is used for draining secretion, and the ventilation cavity is used for washing and pressure measurement. One end of a drainage pipeline of the separator is connected with the drainage pipe, and the other end of the drainage pipeline can be provided with a joint or a plurality of joints.

The principle is as follows: a drainage connecting pipe is inserted into the thoracic cavity or the wound surface of the patient, liquid secretion flows to a drainage cavity of the drainage pipe through the drainage connecting pipe and the separator, and then enters a collection container from the drainage cavity; if in the drainage process, the drainage cavity is blocked due to pustules and blood clots, the electromagnetic valve is opened, external gas enters, the electromagnetic valve, the far-end three-way joint, the ventilation cavity of the drainage tube and the isolation cavity of the separator sequentially pass through, when the air pressure value of the isolation cavity is greater than the air pressure value of the drainage channel, the one-way sealer is opened, the gas enters the drainage cavity, and finally the drainage tube is washed.

Further inject, the drainage flushing system includes the pressure measurement flushing interface who sets up on the control main part tip, the pressure measurement flushing interface is connected with distal end three way connection, one end of distal end three way connection is connected with the solenoid valve, and the other end is connected with the distal end pressure sensor who is used for detecting the separator atmospheric pressure value.

Further inject, negative pressure measurement and control system is including seting up the negative pressure control and drainage interface on the control subject tip, be connected with near-end three way connection on negative pressure control and the drainage interface, near-end three way connection's one end is connected with near-end pressure sensor, and another connects gradually check valve and vacuum pump.

The far-end pressure sensor detects the air pressure of the isolation cavity of the separator to monitor the negative pressure condition of the chest cavity of the patient in real time, and if the air pressure in the collection container changes, a vacuum pump needs to be started for adjustment; in addition, the proximal pressure sensor detects a pressure value of P1 and the distal pressure sensor detects a pressure value of P2, and if the pressure difference between P1 and P2 is greater than the pressure resistance in the drainage lumen, the drainage lumen is blocked. The battery valve needs to be opened to flush the drainage tube.

Further limit, be located the upper region of collection chamber be provided with and block the collection intracavity liquid receive external force influence from the baffle that gushes out from below to the top, the baffle extends downwards along the horizontal slope of vessel from its link, and the free end of this baffle extends perpendicularly downwards has the baffle, a clearance has between the inside wall of baffle and vessel.

Further inject, be located the central zone department of collecting the chamber and from the perpendicular downwardly extending in bottom of baffle there is the riser, leave the determining deviation between the bottom of riser and the vessel body, the riser is followed the longitudinal extension of vessel body just along its vertical direction has seted up the opening on the riser.

Further limit, the barrier film includes round shape spacing piece and rectangular form connection piece, set up on the connection piece with the opening of through-hole intercommunication, and the outside that is located the opening is provided with the sealing.

Further limit, the lower cover comprises a circular cover plate and a long-strip-shaped connecting part, an upwards protruding sealing ring is arranged on the cover plate, and an air passage communicated with the isolation cavity is formed in the connecting part.

Further inject, be provided with the relief valve on the vessel body, the relief valve with the inside of auxiliary interface all is provided with the filter.

Further inject, the inside diapire of vessel body is last and be located the both sides of riser and be provided with the strengthening rib respectively, the strengthening rib upwards extends and crosses the interval of riser and vessel body's inside diapire.

Further limit, a sampling port for taking liquid secretion is arranged on the drainage pipeline.

To sum up, the utility model discloses following beneficial effect has:

1. this equipment can regulate and control patient's thorax negative pressure, does benefit to patient's recovery.

2. This equipment can real-time supervision patient's the negative pressure condition in thorax, provides the accurate data that the patient recovered the condition for medical personnel, provides the help for medical personnel's treatment scheme.

3. This equipment can real-time supervision patient's thorax whether have the gas leakage condition, provides the negative pressure condition of real time monitoring patient's thorax for medical personnel, provides better help for patient's treatment.

4. The drainage condition of pleural effusion of the patient can be quantitatively monitored in real time by the device, the tube drawing time of the patient can be scientifically evaluated, and the treatment period can be shortened.

5. This equipment can detect the drainage tube and whether have the jam, can in time wash the drainage tube, need not that medical personnel are manual to dredge the pipeline.

6. This equipment can accurate quick control negative pressure, utilizes solenoid valve and pressure sensor's cooperation, adopts trapezoidal wave or sinusoidal wave's negative pressure control mode to control the surface of a wound negative pressure, and the science treats the patient for patient's recovery more.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic structural diagram of the control body according to the present embodiment;

FIG. 3 is a schematic view of the connection structure of the collecting vessel, the draft tube and the separator in this embodiment;

FIG. 4 is a schematic view showing the construction of the left container body of the present embodiment;

FIG. 5 is a schematic structural diagram of the right cover body in the present embodiment;

FIG. 6 is a schematic view showing the structure of the draft tube of the present embodiment;

FIG. 7 is a schematic structural view of a separator according to the present embodiment;

FIG. 8 is a schematic diagram of the left side of the separator of this embodiment;

FIG. 9 is a schematic structural view of the upper cover of the separator in this embodiment;

FIG. 10 is a schematic structural view of a separation film according to the present embodiment;

FIG. 11 is a schematic structural view of a lower cover of the separator of the present embodiment;

FIG. 12 is a schematic view of the gas flow through the flush drainage lumens of this embodiment;

FIG. 13 is a partially enlarged schematic view of a left container body of the present embodiment;

FIG. 14 is a schematic view of the connection structure of the internal components of the control body according to the present embodiment;

FIG. 15 is a schematic view of a connection structure between the lower cover and the isolation film in the present embodiment;

description of the drawings: 1. a control body; 2. a collection container; 3. a drainage tube; 4. a separator; 21. A container body; 211. a left container body; 212. a right cover body; 22. a collection interface; 23. a drainage interface; 24. an auxiliary interface; 25. a collection chamber; 251. a collection well; 252. a vent hole; 253. A plug; 26. a partition plate; 27. a blocking plate; 28. a guide plate; 29. reinforcing ribs; 254. a vertical plate; 5. a filter; 6. a pressure relief valve; 31. a drainage lumen; 32. a vent lumen; 41. a lower cover; 42. an upper cover; 43. an isolation film; 411. a cover body; 412. a bonding section; 413. a drainage conduit; 414. buckling grooves; 421. a cover sheet; 422. a connecting portion; 423. buckling edges; 424. an isolation chamber; 425. a seal ring; 426. an airway; 44. a through hole; 45. a sealing block; 46. a card slot; 47. An interface; 48. a one-way sealer; 49. a sampling port; 431. a separator; 432. connecting sheets; 433. a port; 434. a sealing part; 11. a pressure measuring flushing interface; 12. a left tee fitting; 13. an electromagnetic valve; 14. a distal pressure sensor; 15. a negative pressure control and drainage interface; 16. a proximal tee fitting; 17. a proximal end pressure sensor; 18. a one-way valve; 19. a vacuum pump.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a negative pressure drainage monitoring system includes a control main body 1, a collection container 2, a drainage tube 3, and a separator 4. The butt joint end face of the control main body 1 and the collecting container 2 is provided with a connecting structure, and the control main body and the collecting container are detachably connected. One end of the drainage tube 3 is communicated with the collecting container 2, and the other end is communicated with the separator 4. Referring to FIG. 6, the draft tube 3 has two chambers, a draft lumen 31 and a vent lumen 32.

Referring to fig. 3 to 5, the collecting container 2 includes a container body 21, and the container body 21 is divided into a left container body 211 and a right cover body 212, which are detachably coupled. A collecting interface 22 is arranged on the top of the left container body 211, and the collecting interface 22 is used for connecting the drainage tube 3. The right cover body 212 is provided with a drainage port 23 and an auxiliary port 24. In order to filter bacteria, a filter 5 is respectively arranged on the drainage port 23 and the auxiliary port 24; this filter 5 not only can filter the bacterium but also meets water and seals, plays the effect of shutoff.

Referring to fig. 4, the container body 21 has a collection chamber 25 therein. A collection hole 251 and a vent hole 252 are provided in the collection chamber 25, and the vent hole 252 is located above the collection hole 251. The collection interface 22 is respectively communicated with the collection hole 251 and the vent hole 252; in the collection port 22, see fig. 13, a stopper 253 is also provided for closing the chamber at the upper end inside the drain tube 3. In order to filter bacteria during ventilation, a filter 5 is provided in the ventilation hole 252. The drainage lumen 31 communicates with the collection aperture 251 and the vent lumen 32 communicates with the vent aperture 252.

Referring to fig. 4, a partition 26 is provided in an upper region of the collection chamber 25 to block the liquid in the collection chamber 25 from gushing upward from below under the influence of an external force. The baffle 26 extends downwards along the transverse inclination of the container body 21 from the connecting end thereof, the free end of the baffle 26 extends vertically downwards to form a baffle plate 27, and a gap is formed between the baffle plate 27 and the inner side wall of the container body 21. Below the collecting hole 251, a guide plate 28 is provided to guide the liquid to flow out downward. The guide plate 28 not only functions to guide the liquid but also functions to block the backflow of the liquid. Leave the certain interval between the bottom of riser 254 and vessel 21, the riser 254 has seted up the opening along its vertical direction on the vertical extension of vessel 21 and the riser. The collection chamber 25 is divided into two chambers by the riser 254. This opening is intended to open the entire collection chamber 25; the secretion is prevented from being accumulated in a half cavity of the collecting cavity 25, and the gas is not easy to be discharged from the inside.

Reinforcing ribs 29 are respectively arranged on the inner bottom wall of the container body 21 and positioned on two sides of the vertical plate 254. The bead 29 extends upwardly beyond the spacing of the riser 254 from the interior bottom wall of the container body 21. The partition 26, the vertical plate 254 and the reinforcing ribs 29 form a labyrinth structure in the container body 21 to prevent the liquid from flowing out.

The container body 21 is provided with a relief valve 6. When the air pressure inside the container body 21 reaches a certain air pressure value, the relief valve 6 is opened to relieve the pressure. A filter 5 is arranged in the pressure relief valve 6.

Referring to fig. 7 to 15, the separator 4 includes an upper cover 42, a lower cover 41, and a separation membrane 43. Referring to fig. 9, the lower cover 41 has a cover 411 having a circular shape and a coupling portion 412 having an elongated shape; the lower cover 41 is provided with a tubular drainage pipeline 413, and the lower cover 41 and the drainage pipeline 413 are integrally manufactured through a mold. Three catching grooves 414 are formed on the circumferential surface of the cover 411 at equal intervals.

Referring to fig. 6, one end of the drainage tube 3 is connected to the collection port 22 of the collection container 2, and the other end is connected to the drainage pipe 413 of the separator 4. The other end of the drainage conduit 413 of the separator 4 may be provided with a joint or joints; each joint is connected with a drainage tube 3 connected with the thoracic cavity of the human body.

Referring to fig. 11, the upper cover 42 has a circular cover sheet 421 and elongated connecting portions 422; the outer edge of the cover sheet 421 has a ring-shaped fastening edge 423. The cover sheet 421 is provided with a sealing ring 425 protruding upwards, and the connecting portion 422 is provided with an air passage 426 communicated with the isolation cavity 424. The upper cover 42 and the lower cover 41 are connected with the buckling edge 423 through the buckling groove 414, and the two are combined to form an isolation cavity 424. The isolation diaphragm 43 is located in the isolation cavity 424 and is disposed in close contact with the inner wall of the lower cover 41.

Referring to fig. 8, a plug for blocking gas is disposed inside one end of the drainage pipe 413, and a through hole 44 communicated with the isolation chamber 424 is disposed at the lower end of the drainage pipe. The drainage tube 3 is butted with the drainage tube 413, the drainage cavity 31 is communicated with the inner channel of the drainage tube 413, and the plug 253 blocks the ventilation cavity 32, so that air in the ventilation cavity 32 flows into the isolation cavity 424 through the through hole 44. Referring to fig. 9, a sealing block 45 is disposed on the combining portion 412 of the lower cover 41 and on one side of the through hole 44; the outer end of the coupling portion 412 is provided with a locking groove 46. The drainage tube 413 is provided with a sampling port 49 for facilitating sampling.

The lower cover 41 is provided with a port 47 for communicating the drainage pipeline 413 with the isolation cavity 424, the isolation film 43 is provided with a one-way sealer 48 which can be opened or closed, and the one-way sealer 48 is positioned in the port 47. When the pressure in the isolation chamber 424 is higher than the pressure in the drainage tube 413, the one-way sealer 48 is opened to connect the isolation chamber 424 and the drainage tube 413.

Referring to fig. 10, the isolation diaphragm 43 is made of an elastic non-metallic material. The separator 43 includes a circular separator 431 and an elongated connecting piece 432, and the connecting piece 432 is provided with a through hole 433 communicating with the through hole 44, and a seal portion 434 located outside the through hole 433. The cross-sectional shape of the sealing portion 434 is a "convex" shape. The outer end of the isolation film 43 is clamped in the clamping groove 46, the sealing part 434 of the isolation film 43 is buckled on the sealing block 45 of the combining part 412, the lower cover 41 is buckled with the upper cover 42, pressure is applied to the sealing part 434 of the isolation film 43, and the sealing part 434 is in a convex shape, so that a better sealing effect is achieved.

The one-way sealer 48 is two plastic elastic pieces arranged oppositely, and when the ventilation is performed, the two plastic elastic pieces are opened by air pressure, and when the ventilation is not performed, the two plastic elastic pieces recover to be in a closed state. When the door is opened or closed, the isolating sheet 431 is deformed by air pressure; in order to improve the deformability of the spacers 431, the spacers 431 are designed to be convex upward and have a curvature. The inner wall of the lower cover 41 is provided with a cross-shaped groove at the joint.

Referring to fig. 2, a negative pressure measuring and controlling system and a drainage flushing system are respectively arranged on the control main body 1; referring to fig. 14, the drainage flushing system includes a pressure measuring flushing port 11 provided at an end portion of the control main body 1, the pressure measuring flushing port 11 is connected to a distal three-way joint 12, one end of the distal three-way joint 12 is connected to an electromagnetic valve 13, and the other end is connected to a distal pressure sensor 14 for detecting an air pressure value of the separator 4.

The negative pressure measuring and controlling system comprises a negative pressure control and drainage interface 15 arranged at the end part of the control main body 1, a near-end three-way joint 16 is connected to the negative pressure control and drainage interface 15, one end of the near-end three-way joint 16 is connected with a near-end pressure sensor 17, and the other end of the near-end three-way joint is sequentially connected with a one-way valve 18 and a vacuum pump 19.

Referring to fig. 2 and 5, the control main body 1 is connected with the collection container 2, the negative pressure control and drainage port 15 is communicated with the drainage port 23, and the pressure measuring flushing port 11 is communicated with the auxiliary port 24. The remote pressure sensor 14 detects the air pressure in the isolation cavity 424 of the separator 4 to monitor the negative pressure condition of the patient's chest cavity in real time, and if the air pressure value in the isolation cavity 424 does not reach the set value, the vacuum pump 19 starts pumping. In addition, the proximal pressure sensor 17 detects a pressure value of P1 and the distal pressure sensor 14 detects a pressure value of P2. if the pressure difference between P1 and P2 is greater than the pressure resistance in the drainage lumen 31, the drainage lumen 31 becomes occluded. The electromagnetic valve 13 is opened, the electromagnetic valve 13, the far-end three-way joint 12, the vent cavity 32, the isolation cavity 424 of the separator 4 and the drainage cavity 31 are sequentially arranged in the outside atmosphere, and finally the drainage tube 3 is flushed.

The principle is as follows: a drainage connecting pipe is inserted into the thoracic cavity or the wound surface of the patient, liquid secretion flows to a drainage cavity 31 of the drainage pipe 3 through the drainage connecting pipe and the separator 4, and then enters the collection container 2 from the drainage cavity 31; if in the drainage process, the drainage cavity 31 is blocked due to pustules and blood clots, the electromagnetic valve 13 is opened, the outside gas enters, the outside gas sequentially passes through the electromagnetic valve 13, the far-end three-way joint 12 and the isolation cavity 424 of the separator 4, when the pressure value of the isolation cavity 424 is greater than that of the drainage channel, the one-way sealer 18 is opened, the gas enters the drainage cavity 31, and finally the drainage tube 3 is flushed.

The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims (10)

1. The negative pressure drainage monitoring system comprises a control main body (1), a collecting container (2), a drainage tube (3) and a separator (4), wherein the control main body (1) is detachably connected with the collecting container (2), one end of the drainage tube (3) is communicated with the collecting container (2), and the other end of the drainage tube is communicated with the separator (4); the method is characterized in that:

the control main body (1) is respectively provided with a negative pressure measuring and controlling system and a drainage flushing system; the collecting container (2) comprises a container body (21), a collecting cavity (25) is arranged in the container body (21), a collecting hole (251) and a vent hole (252) are arranged in the collecting cavity (25), a collecting interface (22) which is respectively communicated with the collecting hole (251) and the vent hole (252) is arranged outside the container body (21), an auxiliary interface (24) which is communicated with a drainage flushing system and a drainage interface (23) which is communicated with a negative pressure measuring and controlling system are respectively arranged on the end surface of the container body (21), the auxiliary interface (24) is communicated with the vent hole (252), and the drainage interface (23) is communicated with the collecting cavity (25);

the drainage tube (3) comprises a drainage cavity (31) and a ventilation cavity (32), the drainage cavity (31) is communicated with the collection hole (251), and the ventilation cavity (32) is communicated with the ventilation hole (252);

the separator (4) comprises a lower cover (41), an upper cover (42) and an isolating membrane (43), wherein the lower cover (41) and the upper cover (42) are buckled and combined to form an isolating cavity (424), a drainage pipeline (413) is integrally arranged on the lower cover (41), a plug (253) for plugging gas and a through hole (44) communicated with the isolating cavity (424) are arranged in one end of the drainage pipeline (413), the isolating membrane (43) is positioned in the isolating cavity (424) and is attached to the inner wall of the lower cover (41), an interface (47) for communicating the drainage pipeline (413) with the isolating cavity (424) is arranged on the lower cover (41), a one-way sealer (48) capable of being opened or closed is arranged on the isolating membrane (43), the one-way sealer (48) is positioned in the interface (47), and when the air pressure value of the isolating cavity (424) is higher than the air pressure value of the drainage pipeline (413), the one-way obturator (48) opens the communication isolation chamber (424) with the drainage conduit (413).

2. The negative pressure drainage monitoring system of claim 1, wherein: the drainage flushing system comprises a pressure measuring flushing interface (11) arranged at the end part of the control main body (1), the pressure measuring flushing interface (11) is connected with a far-end three-way joint (12), one end of the far-end three-way joint (12) is connected with an electromagnetic valve (13), and the other end of the far-end three-way joint is connected with a far-end pressure sensor (14) used for detecting the air pressure value of the separator (4).

3. The negative pressure drainage monitoring system of claim 1, wherein: the negative pressure measuring and controlling system comprises a negative pressure control and drainage interface (15) arranged at the end part of the control main body (1), a near-end three-way joint (16) is connected to the negative pressure control and drainage interface (15), one end of the near-end three-way joint (16) is connected with a near-end pressure sensor (17), and the other end of the near-end three-way joint is sequentially connected with a one-way valve (18) and a vacuum pump (19).

4. The negative pressure drainage monitoring system of claim 1, wherein: a partition plate (26) for blocking liquid in the collection cavity (25) from gushing out from the lower part to the upper part under the influence of external force is arranged in the upper area of the collection cavity (25), the partition plate (26) extends downwards along the transverse inclination of the container body (21) from the connecting end of the partition plate, a blocking plate (27) vertically extends downwards from the free end of the partition plate (26), and a space is formed between the blocking plate (27) and the inner side wall of the container body (21).

5. The negative pressure drainage monitoring system of claim 4, wherein: the bottom that is located the central zone department of collection chamber (25) and from baffle (26) is perpendicular downwardly extending has riser (254), leave certain interval between the bottom of riser (254) and vessel (21), riser (254) along the longitudinal extension of vessel (21) just along its vertical direction seted up the opening on riser (254).

6. The negative pressure drainage monitoring system of claim 1, wherein: the isolating membrane (43) comprises a round isolating sheet (431) and a long connecting sheet (432), wherein the connecting sheet (432) is provided with a through hole (433) communicated with the through hole (44), and a sealing part (434) is arranged on the outer side of the through hole (433).

7. The negative pressure drainage monitoring system of claim 1, wherein: the upper cover (42) comprises a circular cover plate (421) and a long connecting part (422), an upwards-protruding sealing ring (425) is arranged on the cover plate (421), and an air channel (426) communicated with the isolation cavity (424) is arranged on the connecting part (422).

8. The negative pressure drainage monitoring system of claim 1, wherein: a pressure release valve (6) is arranged on the container body (21), and a filter (5) is arranged in each of the pressure release valve (6) and the drainage interface (23).

9. The negative pressure drainage monitoring system of claim 8, wherein: reinforcing ribs (29) are arranged on the inner bottom wall of the container body (21) and positioned on two sides of the vertical plate (254), and the reinforcing ribs (29) extend upwards to cross the distance between the vertical plate (254) and the inner bottom wall of the container body (21).

10. The negative pressure drainage monitoring system of claim 1, wherein: the drainage pipeline (413) is provided with a sampling port (49) for taking liquid secretion.

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