CN118519372A - Centralized treatment system and judgment method for surgical waste liquid - Google Patents

Abstract

The present invention designs a centralized treatment system for surgical waste liquid. By using a centralized treatment method instead of traditional cart recovery, it facilitates the performance of uterine distension surgery, and provides intuitive data reference for surgeons through flow meter feedback. At the same time, the present invention provides a determination method for a centralized treatment system for surgical waste liquid, which is suitable for centralized treatment and calculation of the waste liquid flow rate of multiple operating rooms. A centralized treatment system for surgical waste liquid, including: MCU, RJ45 communication module, negative pressure pipeline filter device, the input end is connected to the waste liquid suction tube, and the output end is connected to the pre-buried pipeline; the pre-buried pipeline is arranged in the wall of the hospital; the buffer bottle, the input end is provided with a first control valve, the input end is connected to the pre-buried pipeline, and the output end is connected to the liquid collecting bottle; the liquid collecting bottle, the second input end is connected to the negative pressure providing system of the hospital, and the output end is connected to the medical waste pipeline of the hospital; a weighing flow sensor is arranged in the connecting pipeline between the liquid collecting bottle and the buffer bottle.

Description

A surgical waste liquid centralized treatment system and determination method

Technical Field

The present invention relates to the technical field of medical equipment, and in particular to a centralized surgical waste liquid treatment system.

Background Art

The hysteroscopic diagnosis and treatment project is a minimally invasive endoscopic diagnosis and treatment technology for routine gynecological uterine cavity diseases. Because the uterine cavity is normally in a completely closed state, a uterine distension pump is required during the operation to continuously inject uterine distension medium into the uterine cavity to expand the uterine cavity and provide sufficient operating space for the diagnosis and treatment operation.

China's invention patent application publication number CN115607755A discloses a hysteroscopic surgery monitoring system and method, which is an injection device for hysteroscopic surgery designed to address the above-mentioned problems. In fact, during surgery, the uterine distension medium will not be absorbed by the human body, and in order to ensure a reliable field of view in the surgical environment, a suction tube will be used to simultaneously suck out the uterine distension medium. The existing waste liquid suction usually adopts a mobile cart type, and each operating room needs to be equipped with such a waste liquid recovery cart. When the collection bottle in the waste liquid recovery cart is full, it needs to be processed in the surgical waste centralized treatment center. Usually, an operating room needs to have more than 2 waste liquid recovery carts for standby. When the recovery bottle of a waste liquid recovery cart is full during surgery, it is not only necessary to pause and replace it, but also someone needs to recycle the cart after surgery (including cleaning the cart), which increases the postoperative cleaning burden of medical staff. However, it is worth considering that the waste liquid recovery cart can intuitively let the surgical staff know the discharge of the uterine distension medium.

Summary of the invention

The present invention designs a centralized surgical waste liquid treatment system, which uses centralized treatment to replace traditional cart recovery, facilitates the uterine distension surgery, and provides intuitive data reference for surgeons through flow meter feedback. At the same time, the present invention provides a surgical waste liquid centralized treatment system determination method suitable for centralized treatment and calculation of waste liquid flow in multiple operating rooms.

A surgical waste liquid centralized treatment system, comprising: an MCU, an RJ45 communication module, and a negative pressure pipeline filtering device, which is arranged in an operating room, with an input end connected to a waste liquid suction tube, and an output end connected to a pre-buried pipeline;

The negative pressure pipeline filter device is in the shape of a bottle, with a filter screen in the middle, an input end is provided on the bottle cap, the input end is connected to the bottle space between the filter screen and the bottle cap, and an output end is provided on the bottle bottom, the output end is connected to the bottle space between the filter screen and the bottle bottom;

Pre-buried pipelines are installed inside the hospital walls;

A buffer bottle is arranged in the centralized processing center of the operating room, the input end of which is provided with a first control valve, the input end is connected to the pre-buried pipeline, and the output end is connected to the liquid collection bottle;

The liquid collection bottle is arranged in the centralized processing center of the operating room, and has two input ends and one output end. The first input end is connected to the buffer bottle, the second input end is provided with a second control valve, the second input end is connected to the negative pressure supply system of the hospital, and the output end is provided with a third control valve, and the output end is connected to the medical waste pipeline of the hospital;

A single buffer bottle and a liquid collecting bottle constitute a liquid collecting unit, and at least two liquid collecting units are arranged in the operating room centralized processing center; a liquid level sensor is arranged inside the liquid collecting bottle, and a weighing flow sensor is arranged in the connecting pipeline between the liquid collecting bottle and the buffer bottle.

The negative pressure pipeline filter device mainly filters possible biological tissues to prevent oversized tissues from clogging the pipeline. The buffer bottle is used to remove bubbles from the collected waste liquid before calculating the flow rate to prevent bubbles from interfering with the symmetric flow sensor. The liquid collection bottle mainly provides waste liquid collection.

Preferably, the negative pressure pipeline filtering device comprises: a transparent filtering bottle, the bottle body is cylindrical, the top screw cap is provided with an input end, a filter screen is provided inside the bottle body, and an output end is provided at the bottom of the bottle body;

The filter bottle jacket is provided with a detection device, which includes: an infrared detector, an electromagnetic flow meter, an MCU and an RJ45 communication module;

The detection end of the infrared detector is aligned with the filter bottle, so that the detection end is set at 3/4 between the filter screen and the bottle cap;

The electromagnetic flowmeter is arranged on the output end of the filter bottle; the statistical information of the infrared detector and the electromagnetic flowmeter is sent to the operation system of the hospital through the RJ45 communication module.

Preferably, a breathable membrane is provided inside the buffer bottle to separate the buffer bottle into an air cavity and a liquid cavity, wherein both the input end and the output end of the buffer bottle are connected to the liquid cavity; and an opening is provided on the bottle wall of the air cavity for gas release.

Preferably, the air cavity opening is connected to the second input end of the liquid collecting bottle and is controlled by the second control valve. Providing a uniform negative pressure to the air cavity is conducive to the discharge of gas that may exist in the waste liquid through the gas permeable membrane.

A method for determining a centralized surgical waste liquid treatment system, assuming that the use of a waste liquid suction tube includes three stages, including: a waste liquid suction tube insertion stage, a surgery duration, and a surgery end stage;

The determination method includes the following steps:

Step 1, obtain the hospital surgery system information through communication, register the current use of the surgical waste liquid suction tube, where the operating room room number s = {1, 2, 3...n}, the corresponding operating room waste liquid suction tube usage Vs = {V1, V2, V3,...Vn}, Vs is the amount of waste liquid discharged per unit time, multiplied by the duration of the surgery to obtain the total discharge volume Vsum_s, where s is still the operating room room number;

Step 2, the negative pressure pipeline filter device and the weight flow sensor are combined to determine the flow state of the waste liquid. After the sensor in the negative pressure pipeline filter device obtains Vs, setV1 is added to the total discharge volume Vsum_s, and the waste liquid suction tube insertion stage is ended. The value of setV1 is manually input, which is the volume of the liquid in a waste liquid suction tube;

When the liquid flow rate in the heavy flow sensor increases by Vs, it is judged that the waste liquid in the operating room No. s is successfully recovered into the centralized treatment device;

Step 3, during the operation, the hospital operation system is used to provide Vs information and Vsum_s for the reference of the surgeon to the operating room s;

Step 4. When the operation is over, the surgeon determines the end and records the snapshot value of the current Vs, which is recorded as Vs’. When the sensor of the negative pressure pipeline filter device records the Vs information as 0, it is determined that the waste liquid suction tube has been pulled out. At this time, the waste liquid suction tube is allowed to be removed but the negative pressure pipeline filter device is not allowed to be removed. When the unit time flow rate V obtained by the heavy flow sensor decreases by Vs’, it is determined that the waste liquid in the pipeline from the operation s to the centralized treatment device has been emptied, and the operation is officially over.

Preferably, step 3 includes a calibration step, which includes the following sub-steps:

Sub-step 1, compare the sum of the waste liquid suction tube usage recorded by the sensor of the negative pressure pipeline filter device in the operating room with the value calculated by the heavy flow sensor, and calculate the error percentage. When the error percentage is greater than or equal to 2%, sub-step 2 is enabled. The calculation formula of the error percentage K is as follows:

Where Ve is the flow rate per unit time measured by the gravity flow sensor;

Sub-step 2, using a heavy flow sensor to measure the flow per unit time and distribute it to each operating room in proportion, and during the triggering of this step, using the Ves value provided in this step instead of Vs to calculate the accumulated total discharge volume Vsum_s;

The allocation formula is as follows:

Among them, the subscript s in Ves represents the number of the corresponding operating room, Ves represents the calculated value of the corresponding operating room, and Vs is the value recorded by the sensor of the negative pressure pipeline filter device in the operating room.

Step 3 includes a sub-step of automatically replacing the liquid collecting bottle. When the feedback value of the liquid level sensor in the first liquid collecting unit is greater than or equal to the high liquid level setting value, the first control valve in the first liquid collecting unit is closed, and the first control valve in the second liquid collecting unit is opened synchronously; the second control valve in the first liquid collecting unit is closed, and the third control valve in the first liquid collecting unit is opened to drain the liquid; until the feedback value of the liquid level sensor in the first liquid collecting unit is less than or equal to the low liquid level setting value, the third control valve is closed, the second control valve is opened, and the standby state is entered.

Step 4 also includes temporary disinfection of the negative pressure pipeline filter device and the pre-buried pipeline after the operation;

Temporary disinfection methods include: pre-made bagged disinfectant, which includes neutral disinfectant and enzyme cleaning solution;

After the operation, insert the waste liquid suction tube into the bag of disinfectant, and wait until the bag of disinfectant is completely drained before ending the waste liquid suction in this operating room;

It is packaged in 1L bags, and both the neutral disinfectant and enzyme cleaning solution are of standard concentration.

The substantial effect of the present invention is that, firstly, it avoids the use of traditional waste liquid recovery carts and directly reduces the postoperative cleaning burden of medical staff; secondly, it avoids the situation in which the waste liquid recovery cart is full of waste liquid bottles during surgery, thereby avoiding the state in which the surgery is suspended to replace the waste liquid bottles; at the same time, it retains the characteristic of the waste liquid recovery cart that it is convenient to observe the discharge of uterine distension medium. In the present invention, the hospital surgical system feedback is used to digitally display the waste liquid recovery amount in real time, which is more intuitive, accurate and real-time compared with the naked eye observation of the waste liquid recovery cart.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a block diagram of a processing system of the present invention;

Fig. 2 is a diagram of the parallel connection of liquid collecting units;

Fig. 3 is a directional diagram of the connection relationship of the buffer bottle;

FIG4 is a diagram showing the location of the electromagnetic flow meter in Embodiment 2;

FIG5 is a schematic diagram of the negative pressure pipeline filtering device in Example 1;

In the figure: 100, buffer bottle, 101, air cavity, 102, liquid cavity, 103, input end, 104, output end, 105, air cavity opening, 200, filter bottle, 201, waste liquid suction tube, 202, filter screen, 203, electromagnetic flowmeter, 104-2, connecting pipeline between liquid collecting bottle and buffer bottle, 300, liquid collecting bottle, 301, second control valve, 302, third control valve, 303, liquid level sensor.

DETAILED DESCRIPTION

The technical solution of the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

Example 1

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 5, the centralized treatment system for surgical waste liquid comprises: MCU, RJ45 communication module, negative pressure pipeline filtering device, which is arranged in the operating room, the input end is connected to the waste liquid suction tube, and the output end is connected to the pre-buried pipeline; the negative pressure pipeline filtering device is in the shape of a bottle, a filter screen 202 is arranged in the middle, the bottle cap is provided with an input end, the input end is connected to the bottle space between the filter screen and the bottle cap, and the bottle bottom is provided with an output end, the output end is connected to the bottle space between the filter screen and the bottle bottom;

Pre-buried pipelines are installed inside the hospital walls;

The buffer bottle 100 is arranged in the centralized processing center of the operating room, and a first control valve is arranged at the input end, the input end is connected to the pre-buried pipeline, and the output end is connected to the liquid collection bottle;

The liquid collecting bottle 300 is arranged in the centralized processing center of the operating room, and has two input ends and one output end. The first input end is connected to the buffer bottle, the second input end is provided with a second control valve 301, and the second input end is connected to the negative pressure supply system of the hospital, and the output end is provided with a third control valve 302, and the output end is connected to the medical waste pipeline of the hospital;

A single buffer bottle and a liquid collecting bottle constitute a liquid collecting unit, and at least two liquid collecting units are arranged in the operating room centralized processing center; a liquid level sensor 303 is arranged inside the liquid collecting bottle, and a weighing flow sensor is arranged in the connecting pipeline 104-2 between the liquid collecting bottle and the buffer bottle.

The negative pressure pipeline filter device mainly filters possible biological tissues to prevent oversized tissues from clogging the pipeline. The buffer bottle is used to remove bubbles from the collected waste liquid before calculating the flow rate to prevent bubbles from interfering with the symmetric flow sensor. The liquid collection bottle mainly provides waste liquid collection.

The negative pressure pipeline filtering device comprises: a transparent filtering bottle, the bottle body is cylindrical, the top screw cap is provided with an input end, a filter screen is provided inside the bottle body, and an output end is provided at the bottom of the bottle body;

The filter bottle jacket is provided with a detection device, which includes: an infrared detector, an electromagnetic flow meter, an MCU and an RJ45 communication module;

The detection end of the infrared detector is aligned with the filter bottle, so that the detection end is set at 3/4 between the filter screen and the bottle cap;

The electromagnetic flowmeter is arranged on the output end of the filter bottle; the statistical information of the infrared detector and the electromagnetic flowmeter is sent to the operation system of the hospital through the RJ45 communication module.

A breathable membrane is arranged inside the buffer bottle to separate the buffer bottle into an air cavity 101 and a liquid cavity 102, wherein the input end 103 and the output end 104 of the buffer bottle are both connected to the liquid cavity; an opening is arranged on the bottle wall of the air cavity for gas release.

The air cavity opening 105 is connected to the second input end of the liquid collecting bottle and is controlled by the second control valve. Providing a uniform negative pressure to the air cavity is conducive to the gas that may exist in the waste liquid to be discharged through the gas permeable membrane.

Example 2

As shown in FIG4 , the difference between this embodiment and embodiment 1 is that a negative pressure pipeline filtering device is not used, and an electromagnetic flow meter calculation unit is directly set on the waste liquid suction pipe 201, and the waste liquid suction pipe is directly connected to the pre-buried pipeline.

The electromagnetic flowmeter calculation unit installed in the operating room includes: an electromagnetic flowmeter 201, an MCU and an RJ45 communication module; the electromagnetic flowmeter 203 is sleeved on the outer end of the waste liquid suction tube, processes data through the MCU, and transmits data to the hospital operation system through the RJ45 communication module.

Since the actual amount of biological tissue waste produced in the uterine cavity is relatively small, it can be directly discharged through the waste liquid pipe without causing blockage. There is a probability that it will affect the accuracy of the electromagnetic flowmeter, but the processing method of this system will eliminate this disturbance.

A method for determining a centralized surgical waste fluid treatment system.

The use of the waste liquid suction tube includes three stages, including: the waste liquid suction tube insertion stage, the duration of the operation, and the end of the operation;

The determination method includes the following steps:

Step 1, obtain the hospital surgery system information through communication, and register the current use of the surgical waste liquid suction tube, where the operating room room number s = {1, 2, 3...n}, and the corresponding operating room waste liquid suction tube usage Vs = {V1, V2, V3,...Vn}, Vs is the amount of waste liquid discharged per unit time, and multiplying it by the duration of the operation can obtain the total discharge volume Vsum_s, where s is still the operating room room number.

In actual operation, the patient's information, the registered operating room and the corresponding surgical medical staff are determined through the patient's wristband, and the corresponding operating room number can be completely random, and there may be a situation where a single operating room is used while other operating rooms are not used. For example, operating room No. 3 uses the system of the present invention, while other operating rooms do not need to use the present invention because they perform other operations. In the usage of Vs, only V3 has a value, and the other Vs are all 0.

Step 2, the waste liquid flow status is determined by the combination of the negative pressure pipeline filter device and the weight flow sensor. After the sensor in the negative pressure pipeline filter device obtains Vs, setV1 is added to the total discharge volume Vsum_s, ending the waste liquid suction tube insertion stage, where the value of setV1 is manually input, which is the capacity of the liquid in a waste liquid suction tube.

Both the total discharge volume Vsum_s and the discharge volume per unit time Vs are of reference significance. The total discharge volume Vsum_s is equivalent to the scale on the waste liquid recovery cart, which can intuitively obtain the status of the operation, while the discharge volume per unit time Vs is not only used to calculate the total discharge volume Vsum_s, but can also be compared with the numerical value provided by the uterine distension pump device to determine the current input situation and ensure the actual numerical trend of uterine distension in the uterine cavity.

The total discharge volume Vsum_s is cumulative, for example, if the unit time is 1 second, then the total discharge volume Vsum_s=Vs1*1+Vs2*1…+Vsn*1, where Vsn represents the flow rate at the nth second.

When the liquid flow rate in the heavy flow sensor increases by Vs, it is judged that the waste liquid in the operating room No. s is successfully recovered into the centralized treatment device;

For a single operating room, the value obtained by the weight flow sensor should be equal to Vs. If they are not equal, the value obtained by the weight flow sensor shall prevail. Due to the elimination of bubbles by the buffer bottle, the value calculated by the weight flow sensor is more accurate

Step 3, during the operation, the hospital operation system is used to provide Vs information and Vsum_s to the operating room s for the surgeon's reference;

Step 4. When the operation is over, the surgeon determines the end and records the snapshot value of the current Vs, which is recorded as Vs’. When the sensor of the negative pressure pipeline filter device records the Vs information as 0, it is determined that the waste liquid suction tube has been pulled out. At this time, the waste liquid suction tube is allowed to be removed but the negative pressure pipeline filter device is not allowed to be removed. When the unit time flow rate V obtained by the heavy flow sensor decreases by Vs’, it is determined that the waste liquid in the pipeline from the operation s to the centralized treatment device has been emptied, and the operation is officially over.

Preferably, step 3 includes a calibration step, which includes the following sub-steps:

Sub-step 1, compare the sum of the waste liquid suction tube usage recorded by the sensor of the negative pressure pipeline filter device in the operating room with the value calculated by the weight flow sensor, and calculate the error percentage. When the error percentage is greater than or equal to 2%, sub-step 2 is enabled. The calculation formula of the error percentage K is as follows:

Where Ve is the flow rate per unit time measured by the gravity flow sensor;

Sub-step 2, using a heavy flow sensor to measure the flow per unit time and distribute it to each operating room in proportion, and during the triggering of this step, using the Ves value provided in this step instead of Vs to calculate the accumulated total discharge volume Vsum_s;

The allocation formula is as follows:

Among them, the subscript s in Ves represents the number of the corresponding operating room, Ves represents the calculated value of the corresponding operating room, and Vs is the value recorded by the sensor of the negative pressure pipeline filter device in the operating room.

Step 3 includes a sub-step of automatically replacing the liquid collecting bottle. When the feedback value of the liquid level sensor in the first liquid collecting unit is greater than or equal to the high liquid level setting value, the first control valve in the first liquid collecting unit is closed, and the first control valve in the second liquid collecting unit is opened synchronously; the second control valve in the first liquid collecting unit is closed, and the third control valve in the first liquid collecting unit is opened to drain the liquid; until the feedback value of the liquid level sensor in the first liquid collecting unit is less than or equal to the low liquid level setting value, the third control valve is closed, the second control valve is opened, and the standby state is entered.

Step 4 also includes temporary disinfection of the negative pressure pipeline filter device and the pre-buried pipeline after the operation;

Temporary disinfection methods include: pre-made bagged disinfectant, which includes neutral disinfectant and enzyme cleaning solution;

After the operation, insert the waste liquid suction tube into the bag of disinfectant, and wait until the bag of disinfectant is completely drained before ending the waste liquid suction in this operating room;

It is packaged in 1L bags, and both the neutral disinfectant and enzyme cleaning solution are of standard concentration.

The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A surgical waste fluid centralized treatment system, comprising: MCU, RJ45 communication module, its characterized in that still includes:

The negative pressure pipeline filtering device is arranged in an operating room, the input end is connected with the waste liquid suction pipe, and the output end is connected with the embedded pipeline;

The negative pressure pipeline filter device is in a bottle shape, a filter screen is arranged in the middle of the negative pressure pipeline filter device, the bottle cap is provided with an input end, the input end is communicated with a bottle inner space between the filter screen and the bottle cap, the bottle bottom is provided with an output end, and the output end is connected with the bottle inner space between the filter screen and the bottle bottom;

The embedded pipeline is arranged in the hospital wall body;

The buffer bottle is arranged in the centralized processing center of the operating room, the input end of the buffer bottle is provided with a first control valve, the input end of the buffer bottle is communicated with the embedded pipeline, and the output end of the buffer bottle is connected with the liquid collecting bottle;

The liquid collecting bottle is arranged in the centralized processing center of the operating room and is provided with a double input end and an output end, the first input end is communicated with the buffer bottle, the second input end is provided with a second control valve, the second input end is connected with a negative pressure supply system of a hospital, the output end is provided with a third control valve, and the output end is connected to a medical waste pipeline of the hospital;

Wherein, a single buffer bottle and a liquid collecting bottle form 1 liquid collecting unit, and at least 2 liquid collecting units are arranged in the centralized processing center of the operating room;

a liquid level sensor is arranged in the liquid collecting bottle, and a weighing type flow sensor is arranged in a connecting pipeline of the liquid collecting bottle and the buffer bottle.

2. The concentrated surgical waste liquid treatment system according to claim 1, wherein the negative pressure line filter device comprises: the transparent filter bottle comprises a bottle body, a top spiral cover, a filter screen, an output end and a filter screen, wherein the bottle body is in a cylinder shape;

The filter flask overcoat is equipped with detection device, and detection device includes: the device comprises an infrared detector, an electromagnetic flowmeter, an mcu and an RJ45 communication module;

Wherein the detection end of the infrared detector is aligned with the filter flask, so that the detection end is arranged at 3/4 of the position between the filter screen and the bottle cap;

the electromagnetic flowmeter is arranged on the output end; statistical information of the infrared detector and the electromagnetic flowmeter is sent to a surgical system of a hospital through an RJ45 communication module.

3. The concentrated treatment system for surgical waste liquid according to claim 1, wherein a gas permeable membrane is arranged in the buffer bottle to divide the buffer bottle into a gas cavity and a liquid cavity, and the input end and the output end of the buffer bottle are both connected with the liquid cavity; an opening is provided in the bottle wall of the air cavity for gas release.

4. A concentrated surgical waste liquid treatment system as claimed in claim 3, wherein said air chamber opening is in communication with a second input of the liquid collection bottle and is controlled by a second control valve.

5. A method for determining a centralized treatment system for surgical waste liquid, which is applied to the centralized treatment system for surgical waste liquid according to claim 1, wherein the step of arranging the waste liquid suction tube comprises three steps of: a waste liquid suction tube insertion stage, a surgery duration period and a surgery ending stage;

The judging method comprises the following steps:

Step 1, acquiring hospital operation system information through communication, and registering the current operation waste liquid suction tube use condition, wherein the room number s= {1,2,3 … … n }, the corresponding operation room waste liquid suction tube use condition Vs= { V1, V2, V3, … … Vn }, and Vs is the waste liquid amount discharged in unit time, and multiplying the operation duration to obtain the total discharge amount Vsum_s, wherein s is still the room number of the operation room;

Step 2, judging the flowing state of the waste liquid by using a negative pressure pipeline filtering device and a heavy flow sensor, adding setV to the total discharge amount Vsum_s after the sensor in the negative pressure pipeline filtering device obtains Vs, and ending the insertion stage of the waste liquid suction pipe, wherein the value of setV is manually input, and the capacity of the liquid in the waste liquid suction pipe is equal to that of the liquid in the waste liquid suction pipe;

When the liquid flow in the heavy flow sensor increases Vs, judging that the waste liquid in the s-type operating room is successfully recycled into the centralized processing device;

step 3, providing Vs information and Vsum_s for an operator to refer to through a hospital operation system for an s-number operation room during the operation duration;

Step 4, when the operation is finished, determining that the operation is finished by an operator, recording a snapshot value of the current Vs, recording the snapshot value as Vs', and when the sensor record Vs information of the negative pressure pipeline filtering device is 0, judging that the waste liquid suction pipe is already extracted; at this time, the waste liquid suction tube is allowed to be removed, the negative pressure pipeline filter device is not allowed to be removed, and when the flow V per unit time acquired by the heavy flow sensor is reduced by Vs', the operation s is judged that the waste liquid in the pipeline from the operation s to the centralized processing device is exhausted, and the operation is formally finished.

6. The method according to claim 5, wherein the step 3 includes a calibration step, comprising the following sub-steps:

Step 1, comparing the sum of service conditions of the waste liquid suction pipes recorded by a sensor of the operating room negative pressure pipeline filtering device with a numerical value calculated by a heavy flow sensor, and calculating an error percentage, and starting the step 2 when the error percentage is more than or equal to 2%, wherein the calculation formula of the error percentage K is as follows:

where Ve is the flow per unit time measured by the heavy flow sensor;

a substep 2, wherein the flow rate in unit time measured by the heavy flow sensor is proportionally distributed to each operating room, and the Ves value provided in the step is used for replacing Vs to calculate the accumulated total discharge amount Vsum_s during triggering the step;

The allocation formula is as follows:

the angle mark s in Ves represents the number of the corresponding operating room, ves represents the calculated value of the corresponding operating room, and Vs is the value recorded by the sensor of the operating room negative pressure pipeline filtering device.

7. The method according to claim 5, wherein the step 3 includes a substep of automatically replacing the liquid collection bottle, and when the feedback value of the liquid level sensor in the first liquid collection unit is greater than or equal to the high liquid level set value, the first control valve in the first liquid collection unit is closed, and the first control valve in the second liquid collection unit is synchronously opened; closing a second control valve in the first liquid collecting unit, and opening a third control valve in the first liquid collecting unit to drain liquid; and closing the third control valve until the feedback value of the liquid level sensor in the first liquid collecting unit is smaller than or equal to the low liquid level set value, opening the second control valve, and entering a standby state.

8. The method according to claim 5, wherein step 4 further comprises temporarily sterilizing the negative pressure pipeline filter device and the embedded pipeline after the operation is completed;

The temporary disinfection method comprises the following steps: prefabricating a bagged disinfectant, wherein the bagged disinfectant comprises a neutral disinfectant and an enzyme cleaning solution;

after the operation is finished, the waste liquid suction tube is inserted into the bagged disinfectant until the bagged disinfectant is completely pumped, and then the waste liquid suction of the operation room is finished;

The disinfectant volume in the bagged disinfectant is between 0.5L and 2L.