CN112604042B

CN112604042B - Reduced pressure drainage system, method of controlling the same, and computer-readable storage medium

Info

Publication number: CN112604042B
Application number: CN202011620358.6A
Authority: CN
Inventors: 艾杰; 刘先成; 曾映; 张良; 江云; 张波
Original assignee: Guangdong Pumen Biomedical Technology Co ltd
Current assignee: Guangdong Pumen Biomedical Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2023-03-24
Anticipated expiration: 2040-12-31
Also published as: CN112604042A

Abstract

The invention provides a reduced pressure drainage system, a control method thereof and a computer readable storage medium. The reduced-pressure drainage system comprises a dressing component, a liquid collecting tank and a reduced-pressure source, wherein the liquid collecting tank is communicated with the dressing component; the pressure reducing source is communicated with the liquid collection tank through a connecting pipe; the control method of the reduced pressure drainage system comprises the following steps: controlling the reduced-pressure source to run at a preset power for a first preset time, and then turning off the reduced-pressure source; acquiring the detection pressure in the connecting pipe within a second preset time after the decompression source is closed; and comparing the detected pressure with a pressure threshold, and if the detected pressure is greater than the pressure threshold, judging that the liquid collection tank is in a full liquid state or a blocked state. The control method can accurately detect the state of the liquid collecting tank.

Description

Reduced pressure drainage system, method of controlling the same, and computer-readable storage medium

Technical Field

The invention relates to the technical field of medical equipment, in particular to a reduced-pressure drainage system, a control method thereof and a computer-readable storage medium.

Background

The Vacuum Sealing Drainage (VSD) is originally created in 1992 by Leischmann, a traumatic surgery of Germany and university of UIM, and means that a dressing connected with a drainage tube is adopted to cover or fill a wound surface with skin and soft tissue defects, a sealing film is used for sealing to form a closed space, the drainage tube is communicated with a reduced pressure source, negative pressure is applied to the wound surface to promote wound surface healing, and tissue fluid drained from the wound surface is collected through a fluid collection tank. When the liquid collecting tank is full or blocked, the liquid collecting tank needs to be replaced in time. However, the existing pressure reduction drainage system lacks a detection means for the state of the liquid collection tank, and has poor safety.

Disclosure of Invention

In view of this, it is necessary to provide a control method of a reduced pressure drainage system, which can detect the state of the liquid collection tank relatively accurately.

It is further desirable to provide a method of controlling a reduced pressure drainage system and a computer readable storage medium.

A control method of a reduced-pressure drainage system comprises a dressing component, a liquid collecting tank and a reduced-pressure source, wherein the liquid collecting tank is communicated with the dressing component; the reduced-pressure source is communicated with the liquid collecting tank through a connecting pipe;

the control method comprises the following steps:

controlling the reduced-pressure source to run at a preset power for a first preset time, and then turning off the reduced-pressure source;

acquiring the detection pressure in the connecting pipe within a second preset time after the decompression source is closed; and

and comparing the detected pressure with a pressure threshold, and if the detected pressure is greater than the pressure threshold, judging that the liquid collection tank is in a full liquid state or a blocked state.

According to the control method of the reduced-pressure drainage system, the reduced-pressure source is controlled to operate at the preset power for the first preset time, and then the reduced-pressure source is closed; acquiring the detection pressure in the connecting pipe within a second preset time after the decompression source is closed; the detection pressure is compared with the pressure threshold, if the detection pressure is larger than the pressure threshold, whether the liquid collecting tank is in a liquid full state or a blocking state is judged, the detection speed is high, the control method can accurately detect whether the liquid collecting tank is in the liquid full state or the blocking state in real time, generally, a connecting pipe between the reduced pressure source and the liquid collecting tank is always in a non-moving state, the state of the liquid collecting tank is judged through the pressure in the connecting pipe between the reduced pressure source and the liquid collecting tank, and the detection accuracy of the state of the liquid collecting tank can be prevented from being influenced by the movement of a pipeline.

In one embodiment, the predetermined power is a set multiple of the power rating of the reduced-pressure source.

In one embodiment, the multiple is set to be 0.4-1 times.

In one embodiment, the first predetermined time is 1 second to 2 seconds.

In one embodiment, the second predetermined time is 1 second to 2 seconds.

In one embodiment, the pressure threshold is a preset multiple of the maximum operating pressure of the reduced pressure drainage system.

In one embodiment, the pressure threshold value is set to be 0.8-1.2 times of the maximum working pressure of the reduced-pressure drainage system.

In one embodiment, after detecting that the liquid collecting tank is in a full liquid state or a blockage state, the method further comprises the following steps: sending out a prompt signal, and closing the decompression drainage system.

In one embodiment, the prompting signal is a prompting device such as an audio prompting signal, a light prompting signal or an image prompting signal.

A reduced pressure drainage system comprising:

a dressing assembly;

a fluid collection tank in communication with the dressing assembly;

the pressure reduction source is communicated with the liquid collection tank through a connecting pipe;

the pressure sensor is positioned between the liquid collecting tank and the pressure reducing source and is used for detecting the pressure in the connecting pipe; and

the controller is in signal connection with the reduced pressure source and the pressure sensor, the controller can control the reduced pressure source to operate at preset power for a first preset time and then close the reduced pressure source, then detection pressure detected by the pressure sensor within a second preset time after the reduced pressure source is closed is received, the controller can also compare the detection pressure with a pressure threshold, and if the detection pressure is larger than the pressure threshold, the liquid collection tank is judged to be in a full liquid state or a blocked state.

In one embodiment, the device further comprises a liquid blocking filter, the liquid blocking filter is connected with the liquid collecting tank and the connecting pipe, and if the detected pressure is larger than a pressure threshold value, the liquid blocking filter is judged to be in a blocking state.

In one embodiment, the liquid blocking filter may be a hydrophobic filter or an oleophobic filter or the like that serves to block the flow of liquid.

In one embodiment, the dressing component comprises a dressing component and a connecting pipe component, wherein the dressing component comprises a dressing component and a dressing component, the dressing component is arranged on the dressing component, the connecting pipe component comprises a connector, a drainage pipe, a pressure measuring pipe and a liquid inlet pipe, the connector is in sealed communication with the dressing component, the connector is provided with three connecting ports arranged side by side, one end of the drainage pipe, one end of the pressure measuring pipe and one end of the liquid inlet pipe are respectively communicated with the three connecting ports, the other end of the drainage pipe is communicated with a liquid collection tank, the other end of the pressure measuring pipe can be connected with a pressure monitor, and the other end of the liquid inlet pipe can be connected with a fluid source.

In one embodiment, the outer peripheral surface of the side of the drainage tube close to the connector, the outer peripheral surface of the side of the pressure measuring tube close to the connector, and the outer peripheral surface of the side of the liquid inlet tube close to the connector are connected.

A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned control method.

Drawings

FIG. 1 is a schematic flow diagram of a method of controlling a reduced pressure drainage system according to one embodiment;

FIG. 2 is a partial block diagram of an embodiment of a reduced pressure drainage system;

FIG. 3 is a schematic diagram of a connector of the reduced pressure drainage system of FIG. 2;

FIG. 4 is a schematic view of a partial structure of a drainage tube, a pressure measuring tube and a liquid inlet tube in the reduced pressure drainage system shown in FIG. 2;

FIG. 5 is a schematic view of another angle of the connector shown in FIG. 3;

FIG. 6 is a schematic view of another angle of the connector shown in FIG. 3;

FIG. 7 is a partially exploded view of the canister of the reduced pressure drainage system of FIG. 2.

Detailed Description

The present invention will now be described more fully hereinafter for purposes of facilitating an understanding thereof, and may be embodied in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 and 2, an embodiment of the present invention provides a method for controlling a reduced pressure drainage system, which can detect the state of the liquid collection tank 120 more accurately. In this embodiment, the reduced pressure drainage system includes a dressing assembly 110, a canister 120, and a reduced pressure source 130, the canister 120 being in communication with the dressing assembly 110; the reduced-pressure source 130 communicates with the sump tank 120 through a connection pipe 140.

Specifically, the control method of the reduced-pressure drainage system comprises the following steps of S1-S3:

s1, controlling the reduced pressure source 130 to operate at a preset power for a first preset time, and then turning off the reduced pressure source 130.

Wherein the computer device presets and controls the operating power and operating time of the reduced pressure source 130. After the reduced-pressure source 130 is operating at the predetermined power for the first predetermined time, the computer device turns off the reduced-pressure source 130. The computer device may be a terminal or a server. The terminal can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers and portable wearable devices, and the server can be implemented by an independent server or a server cluster formed by a plurality of servers.

In this embodiment, the reduced pressure drainage system includes a controller. The controller is in signal communication with a reduced pressure source 130. The controller is pre-loaded with a computer program, and the computer program can be executed to realize the steps of the control method. Specifically, the controller may be configured to control reduced pressure source 130 to operate at a predetermined power for a first predetermined time before turning off reduced pressure source 130.

The decompression source 130 is an air pump or a vacuum pump.

In one embodiment, the predetermined power is a set multiple of the rated power of the reduced pressure source 130. Further, the setting multiple is 0.4-1. In some embodiments, the preset power may be 0.4 times, 0.5 times, 0.6 times, 0.7 times, 0.8 times, 0.9 times, or 1.0 times the rated power of the reduced pressure source 130.

In one embodiment, the first predetermined time is 1 second to 2 seconds. In some embodiments, the first preset time may be 1 second, 1.1 second, 1.2 seconds, 1.3 seconds, 1.4 seconds, 1.5 seconds, 1.6 seconds, 1.7 seconds, 1.8 seconds, 1.9 seconds, or 2 seconds.

And S2, acquiring the detection pressure in the connecting pipe 140 within a second preset time after the decompression source 130 is closed.

Wherein, after the reduced pressure source 130 is turned off, the computer device obtains the detected pressure in the connection pipe 140 within a second preset time after the reduced pressure source 130 is turned off.

In this embodiment, the reduced pressure drainage system includes a pressure sensor 150. A pressure sensor 150 is located between the sump tank 120 and the reduced pressure source 130. The pressure sensor 150 is used to detect the pressure in the connection pipe 140. The controller is also in signal communication with a pressure transducer 150. The controller may be configured to receive a detected pressure detected by the pressure sensor 150 for a second preset time period since the reduced pressure source 130 was turned off.

In one embodiment, the second predetermined time is 1 second to 2 seconds. In some embodiments, the second preset time may be 1 second, 1.1 seconds, 1.2 seconds, 1.3 seconds, 1.4 seconds, 1.5 seconds, 1.6 seconds, 1.7 seconds, 1.8 seconds, 1.9 seconds, or 2 seconds.

And S3, comparing the detected pressure with a pressure threshold, and if the detected pressure is greater than the pressure threshold, judging that the liquid collection tank 120 is in a full liquid state or a blocked state.

Further, if the sensed pressure is less than the pressure threshold, the canister 120 is not full or clogged.

In this embodiment, the reduced pressure drainage system further includes a liquid blocking filter 160. The liquid blocking filter 160 connects the sump 120 and the connection pipe 140. If the detected pressure is greater than the pressure threshold, it is determined that the liquid blocking filter 160 is in a clogged state. When the collected liquid in the collected liquid tank 120 is full, the collected liquid contacts the liquid blocking filter 160, so that the liquid blocking filter 160 is blocked and is in a blocked state. When the liquid blocking filter 160 is clogged, it is difficult for the liquid collection tank 120 to continue collecting the collected liquid and the state is clogged. Therefore, by determining whether the liquid-blocking filter 160 in the reduced-pressure drain system is in a clogged state, it is possible to evaluate whether the liquid-collecting tank 120 is in a full liquid or clogged state.

Optionally, the liquid blocking filter 160 is a water blocking filter. The water-blocking filter may be, for example, a hydrophobic filter. The water-blocking filter may be a filter that is clogged with a water-soluble liquid. It is to be understood that the liquid blocking filter 160 is not limited to being a water blocking filter, and may be selected according to the liquid state of the collected liquid in the collected liquid tank 120, for example, the collected liquid is oily, and an oil blocking filter, for example, an oil-repellent filter, may be selected.

The computer device compares the detected pressure with a pressure threshold, and if the detected pressure is greater than the pressure threshold, it is determined that the liquid collection tank 120 is in a full liquid state or a blocked state.

In this embodiment, the controller may also compare the detected pressure with a pressure threshold value, and if the detected pressure is greater than the pressure threshold value, determine that the liquid collection tank 120 is in a full liquid state or a clogged state.

In one embodiment, the pressure threshold is a preset multiple of the maximum operating pressure of the reduced pressure drainage system. Further, the pressure threshold value is set to be 0.8-1.2 times of the maximum working pressure of the pressure reduction drainage system. In some embodiments, the pressure threshold may be 0.8, 0.9, 1.0, 1.1, or 1.2 times the set multiple of the maximum operating pressure of the reduced pressure drainage system.

In one embodiment, after detecting that the liquid collection tank 120 is in a full state or a blocked state, the method further comprises the following steps: sending out a prompt signal, and closing the decompression drainage system. Optionally, the prompt signal includes at least one of an audio prompt signal, a light prompt signal, and an image prompt signal. The audible alert signal may be, for example, a horn or an alert ring. The light prompting signal may be, for example, an indicator light that lights up or flashes. The image prompt signal may be, for example, a display screen display. By signaling a prompt, the user can be prompted to adjust or replace the sump tank 120 in a timely manner.

Specifically, the reduced-pressure drainage system further includes a prompting device (not shown). The prompting device is connected with the controller. The controller can control the prompting device liquid collecting tank 120 to send out a prompting signal when the tank is in a full liquid state or a blocked state, and the pressure reduction drainage system is controlled to be closed. The prompting device comprises at least one of a loudspeaker, a prompting bell, an indicating lamp and a display screen.

In one specific example, the predetermined power is set at 0.4 times the rated power of the reduced pressure source 130, the first predetermined time is 1 second, the second predetermined time is 1 second, and the pressure threshold is 0.8 times the maximum operating pressure of the reduced pressure drainage system.

In one specific example, the predetermined power is set at 0.6 times the rated power of the reduced pressure source 130, the first predetermined time is 1.5 seconds, the second predetermined time is 1.5 seconds, and the pressure threshold is 1 time the maximum operating pressure of the reduced pressure drainage system.

In one specific example, the predetermined power is a set multiple of the rated power of the reduced pressure source 130 of 1, the first predetermined time is 2 seconds, the second predetermined time is 2 seconds, and the pressure threshold is 1.2 times the maximum operating pressure of the reduced pressure drainage system.

The control method of the reduced pressure drainage system comprises the steps of controlling the reduced pressure source 130 to run at a preset power for a first preset time, and then turning off the reduced pressure source 130; acquiring the detected pressure in the connection pipe 140 within a second preset time after the reduced pressure source 130 is turned off; the detection pressure is compared with the pressure threshold, if the detection pressure is greater than the pressure threshold, the liquid collecting tank 1203 is judged to be in a full liquid state or a blocked state, the detection rate is high, the control method can accurately detect whether the liquid collecting tank 120 is in the full liquid state or the blocked state in real time, in addition, generally, the connecting pipe 140 between the reduced pressure source 130 and the liquid collecting tank 120 is always in a non-moving state, the state of the liquid collecting tank 120 is judged through the pressure in the connecting pipe 140 between the reduced pressure source 130 and the liquid collecting tank 120, and the detection accuracy of the state of the liquid collecting tank 120 due to the movement of a pipeline can be avoided.

Referring to fig. 2, an embodiment of the present invention further provides a reduced pressure drainage system, which can perform the control method of the reduced pressure drainage system, and can detect the state of the liquid collection tank 120 more accurately. The reduced-pressure drainage system includes, among other things, a dressing assembly 110, a canister 120, a reduced-pressure source 130, a pressure sensor 150, and a controller. The collection tank 120 is in communication with the dressing assembly 110. The reduced-pressure source 130 communicates with the sump tank 120 through a connection pipe 140. A pressure sensor 150 is located between the sump tank 120 and the reduced pressure source 130. The pressure sensor 150 is used to detect the pressure in the connection pipe 140. The controller is in signal communication with the reduced pressure source 130 and the pressure sensor 150. The controller may be configured to control the reduced pressure source 130 to operate at a predetermined power for a first predetermined time period before turning off the reduced pressure source 130 and then receive a pressure detected by the pressure sensor 150 for a second predetermined time period after turning off the reduced pressure source 130. The controller can also compare the detected pressure with a pressure threshold, and if the detected pressure is greater than the pressure threshold, determine that the sump 120 is in a full or blocked state.

The dressing assembly 110 includes a sealing membrane (not shown) and a dressing (not shown). The sealing membrane can cover the tissue part with the wound surface and form a sealing space with the tissue part. The wound surface is located in the sealed space. The dressing can be disposed in the sealed space and cover or fill the wound bed. Wherein, the sealing film is a breathable and liquid-impermeable film. The sealing membrane is capable of adhering to a tissue site. The dressing has a channel for the passage of a liquid. The dressing may be, for example, a foam pad.

Referring to fig. 3 to 6, the reduced-pressure drainage system further includes a connecting pipe assembly. The connection assembly includes a connector 171, a drainage tube 173, a pressure measuring tube 175, and a fluid inlet tube 177. The connector 171 is in sealed communication with the dressing assembly 110. The connector 171 has three connection ports 171a arranged side by side. One end of the drainage tube 173, one end of the pressure measuring tube 175, and one end of the liquid inlet tube 177 are respectively communicated with the three connection ports 171a. The other end of the draft tube 173 communicates with the sump 120. The other end of the pressure measuring tube 175 can be connected to a pressure monitor. The other end of the liquid inlet pipe 177 can be connected to a source of fluid.

Wherein the sealing film has an opening communicating with the sealed space. The side of the connector 171 remote from the connection port 171a shields the opening of the sealing film, communicates with the sealed space, and is sealingly connected to the sealing film.

The reduced pressure drainage system further includes a pressure monitor (not shown) connected to an end of the pressure measuring tube 175 remote from the connector 171. Pressure monitors are used to detect pressure within a wound site (i.e., a sealed space).

Wherein the reduced pressure drainage system further comprises a fluid source (not shown). A fluid source is connected to the end of the inlet tube 177 remote from the connector 171 for introducing a fluid onto the wound bed, such as: a cleaning solution such as physiological saline or a liquid containing a therapeutic drug. Further, the fluid source includes a reservoir and a driver. The liquid storage tank is used for storing liquid conveyed to the wound surface. The liquid inlet pipe 177 communicates with the liquid reservoir and the connector 171. The driver drives the liquid in the liquid storage tank to flow to the wound surface through the liquid inlet pipe 177. The driver can be a power device such as a positive pressure pump or a water pump.

An outer peripheral surface of the drain pipe 173 on the side close to the connector 171, an outer peripheral surface of the pressure measuring pipe 175 on the side close to the connector 171, and an outer peripheral surface of the liquid inlet pipe 177 on the side close to the connector 171 are connected. This kind of setting can prevent the pipeline winding, and the user of being convenient for accomodates to be favorable to the type of each pipeline of user identification.

In the present embodiment, the connector 171, the drainage tube 173, the pressure measuring tube 175 and the liquid inlet tube 177 are integrally formed. The arrangement is beneficial to ensuring the tightness of the connection of the drainage tube 173, the pressure measuring tube 175 and the liquid inlet tube 177 with the connector 171 respectively, and can also simplify the production process.

Referring to fig. 7, the liquid collection tank 120 includes a tank body 121. The tank 121 is provided with a liquid inlet 1211 and a suction port 1213. The inlet 1211 is connected to the dressing assembly 110. The suction port 1213 is used to connect the reduced pressure source 130. Further, the can 121 has a bottom wall 121a, a top wall 121b, and a side wall 121c. The bottom wall 121a and the top wall 121b are oppositely disposed. The side wall 121c is connected at both ends thereof to the bottom wall 121a and the top wall 121b, respectively. Liquid inlet 1211 is disposed on top wall 121 b. The suction port 1213 is provided on the side wall 121c and is disposed near the top wall 121 b.

Sump tank 120 also includes tank cover 123. The can lid 123 can be placed on the can body 121. The tank cover 123 is provided with a detection port 1231 for connection of the pressure measuring tube 175. The detection port 1231 is inserted through the receiving hole 123a of the lid 123. Further, a cap 123 can be disposed on the top wall 121b and fit over the liquid inlet 1211. The tank cover 123 is provided with a liquid inlet 1233 for connecting the drainage tube 173. When the cover 123 is disposed on the top wall 121b, the position of the liquid inlet 1233 corresponds to the position of the liquid inlet 1211, and the liquid inlet 1233 is communicated with the liquid inlet 1211.

Referring to fig. 2, the reduced pressure drainage system further includes a liquid blocking filter 160. The liquid blocking filter 160 connects the collected liquid tank 120 and the connection pipe 140. If the detected pressure is greater than the pressure threshold, it is determined that the liquid blocking filter 160 is in a clogged state. When the collected liquid in the collected liquid tank 120 is full, the collected liquid contacts the liquid blocking filter 160, so that the liquid blocking filter 160 is blocked and is in a blocked state. When the liquid blocking filter 160 is clogged, it is difficult for the liquid collection tank 120 to continue collecting the collected liquid and the state is clogged. Therefore, by judging whether or not the liquid-blocking filter 160 in the reduced-pressure drainage system is in a clogged state, it is possible to evaluate whether or not the liquid-collecting tank 120 is in a full liquid state or a clogged state. Further, a liquid-blocking filter 160 is provided in the suction port 1213. The can 121 is provided with a fixing cap 1215 to be fitted over the suction port 1213. When the liquid blocking filter 160 is disposed in the suction port 1213, the fixing cap 1215 is fitted over the suction port 1213 to fix the liquid blocking filter 160.

Optionally, the liquid-blocking filter 160 is a water-blocking filter. The water-blocking filter may be, for example, a hydrophobic filter. The water-blocking filter may be a filter that is clogged with a water-soluble liquid. It is understood that the liquid blocking filter 160 is not limited to being a water blocking filter, and may be selected according to the liquid state of the collected liquid in the collected liquid tank 120, for example, if the collected liquid is oily, an oil blocking filter may be selected.

The decompression source 130 is an air pump or a vacuum pump.

The reduced pressure drainage system includes a host computer not shown. The host is internally provided with a controller. The controller is internally preset with a computer program. The controller, when executing the computer program, is capable of implementing the steps of the method of controlling the reduced pressure drainage system of the above-described embodiment. The detailed description of the steps of the control method of the reduced pressure drainage system is given above and will not be repeated here.

The reduced pressure drainage system also includes a reminder device (not shown). The prompting device is connected with the controller. The controller can control the prompting device liquid collecting tank 120 to send out a prompting signal when the tank is in a full liquid state or a blocked state, and the pressure reduction drainage system is controlled to be closed. The prompting device comprises at least one of a loudspeaker, a prompting bell, an indicating lamp and a display screen. It should be noted that the display screen is not limited to displaying the prompt signal, and may also be used to prompt the operation flow in the treatment process.

In the reduced-pressure drainage system, the controller controls the reduced-pressure source 130 to operate at a preset power for a first preset time, and then the reduced-pressure source 130 is turned off; acquiring the detected pressure in the connection pipe 140 within a second preset time after the reduced pressure source 130 is turned off; the detection pressure is compared with the pressure threshold, if the detection pressure is greater than the pressure threshold, the liquid collecting tank 1203 is judged to be in a full liquid state or a blocked state, the detection rate is high, the control method can accurately detect whether the liquid collecting tank 120 is in the full liquid state or the blocked state in real time, in addition, generally, the connecting pipe 140 between the reduced pressure source 130 and the liquid collecting tank 120 is always in a non-moving state, the state of the liquid collecting tank 120 is judged through the pressure in the connecting pipe 140 between the reduced pressure source 130 and the liquid collecting tank 120, and the detection accuracy of the state of the liquid collecting tank 120 due to the movement of a pipeline can be avoided.

An embodiment of the present invention further provides a computer device, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the method for controlling the reduced pressure drainage system according to the above embodiment when executing the computer program. The detailed description of the control method of the reduced pressure drainage system is given above, and is not repeated here.

An embodiment of the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of controlling a reduced pressure drainage system of the above-mentioned embodiment. The detailed description of the control method of the reduced pressure drainage system is given above, and is not repeated here.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A control method of a reduced-pressure drainage system is characterized in that the reduced-pressure drainage system comprises a dressing assembly, a liquid collecting tank and a reduced-pressure source, wherein the liquid collecting tank is communicated with the dressing assembly; the reduced-pressure source is communicated with the liquid collection tank through a connecting pipe;

the control method comprises the following steps:

controlling the reduced-pressure source to run at a preset power for a first preset time, and then closing the reduced-pressure source, wherein the preset power is a set multiple of the rated power of the reduced-pressure source;

acquiring the detection pressure in the connecting pipe within a second preset time after the reduced pressure source is closed; and

and comparing the detection pressure with a pressure threshold, and if the detection pressure is greater than the pressure threshold, judging that the liquid collection tank is in a full liquid state or a blocked state, wherein the pressure threshold is a preset multiple of the maximum working pressure of the pressure reduction drainage system.

2. The control method according to claim 1, wherein the set multiple is 0.4-1 times.

3. The control method according to claim 1, wherein the first preset time is 1 second to 2 seconds.

4. The control method according to claim 1, wherein the second preset time is 1 second to 2 seconds.

5. The control method according to any one of claims 1 to 4, characterized by further comprising, after detecting that the collected-liquid tank is in a full-liquid state or a clogged state, the steps of: sending a prompt signal, and closing the reduced pressure drainage system;

the prompt signal comprises at least one of a sound prompt signal, a light prompt signal and an image prompt signal.

6. A reduced pressure drainage system, comprising:

a dressing assembly;

a fluid collection tank in communication with the dressing assembly;

the pressure sensor is positioned between the liquid collecting tank and the reduced-pressure source and used for detecting the pressure in the connecting pipe; and

the controller is in signal connection with the reduced pressure source and the pressure sensor, the controller can control the reduced pressure source to operate for a first preset time at preset power and then close the reduced pressure source, then receives detection pressure detected by the pressure sensor within a second preset time after the reduced pressure source is closed, the controller can also compare the detection pressure with a pressure threshold value, if the detection pressure is greater than the pressure threshold value, the liquid collection tank is judged to be in a liquid full state or a blocked state, wherein the preset power is a set multiple of rated power of the reduced pressure source, and the pressure threshold value is a preset multiple of the maximum working pressure of the reduced pressure drainage system.

7. The reduced-pressure drainage system according to claim 6, further comprising a liquid blocking filter, wherein the liquid blocking filter is connected with the liquid collecting tank and the connecting pipe, and if the detected pressure is greater than the pressure threshold value, the liquid blocking filter is judged to be in a blocked state.

8. The reduced-pressure drainage system according to claim 6, further comprising a connecting pipe assembly, wherein the connecting pipe assembly comprises a connector, a drainage pipe, a pressure-measuring pipe and a liquid inlet pipe, the connector is in sealed communication with the dressing assembly, the connector is provided with three connecting ports arranged side by side, one end of the drainage pipe, one end of the pressure-measuring pipe and one end of the liquid inlet pipe are respectively communicated with the three connecting ports, the other end of the drainage pipe is communicated with the liquid collection tank, the other end of the pressure-measuring pipe can be connected with a pressure monitor, and the other end of the liquid inlet pipe can be connected with a fluid source.

9. The reduced-pressure drainage system according to claim 8, wherein an outer peripheral surface of the drainage tube on a side close to the connector, an outer peripheral surface of the pressure-measuring tube on a side close to the connector, and an outer peripheral surface of the liquid inlet tube on a side close to the connector are connected.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the control method according to any one of claims 1 to 5.