Surgical waste fluid collection method and system
By designing a surgical waste fluid collection system, a closed collection and real-time volume display are achieved using filters and ultrasonic level detection. This solves the problems of the inability to display volume in real time and the lack of filters in existing technologies, thus improving the safety and convenience of surgical waste fluid collection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU DODE MEDICAL EQUIP SERVICE CO LTD
- Filing Date
- 2024-01-24
- Publication Date
- 2026-08-04
AI Technical Summary
Existing surgical waste fluid collection devices cannot display the volume in real time, lack a filter structure that prevents the collection of residues, and pose environmental pollution and infection risks during the discharge process.
A surgical waste fluid collection system was designed, which includes a collection tank, a filter screen, a negative pressure connector, and an ultrasonic level detection system to achieve closed collection and real-time volume display, and to achieve safe discharge through magnetic connection.
It enables closed-loop collection and real-time volume monitoring of surgical waste fluids, avoiding environmental pollution and infection risks, and improving ease of use and safety.
Smart Images
Figure CN122499374A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, specifically to a method and system for collecting surgical waste fluid. Background Technology
[0002] As is well known, during surgery, it is essential to promptly and quickly aspirate and collect patient bodily fluids, waste fluids, or cleaning solutions. This helps maintain the cleanliness and hygiene of the operating room, reduces the risk of infection, and ensures the smooth progress of the surgery. Generally, a negative pressure catheter is used to guide the fluid into a waste tank for collection. This method is simple in structure and low in cost. However, it typically does not display the waste fluid volume in real time; collection is based on visual estimation of the remaining volume, which can easily lead to over-collection. Furthermore, it usually lacks a filter structure, preventing the separate collection of residues and affecting ease of use. After use, medical staff must open the waste tank lid to empty it, exposing the surgical waste fluid to the environment and posing a risk of infection to medical personnel. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a method and system for collecting surgical waste fluid. The method and system can collect surgical waste fluid into a sealed collection tank, collect residue into a filter screen, and discharge the waste fluid through a pipe, thereby reducing the pollution of the environment. The method and system can display the waste fluid capacity of the collection tank in real time, and are easy to use. The invention can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a surgical waste fluid collection method and system, including a frame; The frame contains a collection tank. A negative pressure connector is located at the lower front end of the frame, with its rear end connected to an air extraction port on the upper surface of the collection tank via an extraction pipe. A tube seat is located at the lower front end of the frame. Each waste liquid hole on the upper surface of the collection tank has an extraction shell, with a filter screen movably inserted inside. The rear end of the extraction shell is threaded with an extraction tube seat. Symmetrically distributed sealing caps are located on the outer arc surface of each extraction tube seat, engaging with the rear end of the vertically corresponding extraction tube seat. It operates under external central negative pressure, collecting surgical waste into a sealed collection tank. This facilitates collection and prevents environmental pollution. Equipped with ultrasonic level detection, it displays the real-time waste liquid capacity of the collection tank, allowing for timely treatment of internal surgical waste. After completion, it can be quickly and easily connected to a drainage station for discharge and self-cleaning, ensuring high safety during discharge through a pipeline.
[0005] Furthermore, the lower end of the frame is provided with evenly distributed sliding columns, all of which are slidably connected to the support plate. The left side of the upper surface of the support plate is provided with a liquid inlet connector, and the right side of the upper surface of the support plate is provided with a liquid outlet connector. The upper end of the liquid outlet connector is connected to the liquid outlet hole on the lower surface of the collection tank through a liquid outlet pipe, and the upper end of the liquid inlet connector is connected to the spray hole on the upper surface of the collection tank through a liquid delivery pipe, which facilitates the discharge of waste liquid inside the collection tank and the internal cleaning.
[0006] Furthermore, springs are movably sleeved in the middle of the outer arc surface of the sliding column, and nuts are threaded to the upper end of the outer arc surface of the sliding column. The springs are located between the nuts and the support plate, providing downward pressure to the support plate.
[0007] Furthermore, magnets are provided on both the left and right sides of the lower rear side of the frame, two top pins are provided in the middle of the support plate, and a positioning pin is provided at the lower end of the inside of the frame to facilitate connection with an external drainage station.
[0008] Furthermore, an infusion rod holder is slidably connected to the upper end of the frame to facilitate the attachment of infusion bottles.
[0009] Furthermore, a lead screw is rotatably connected inside the frame via a bearing, and a nut block is threadedly connected to the lower end of the outer arc surface of the lead screw. The rear end of the nut block is fixedly connected to the lower end of the infusion rod holder, which facilitates the adjustment of the height of the infusion rod holder.
[0010] Furthermore, a gearbox is provided in the middle of the front side wall of the frame. The output shaft of the gearbox is fixedly connected to the upper end of the lead screw. The front end of the input shaft of the gearbox extends out of the front side of the frame and is provided with a handwheel at the end to facilitate the driving of the lead screw.
[0011] Furthermore, an ultrasonic liquid level sensor is installed at the detection hole on the upper surface of the collection tank, a display screen is installed at the large rectangular hole at the upper end of the frame, a battery is installed at the small rectangular hole at the upper end of the frame, and a controller is installed at the upper end inside the frame. The output terminals of the ultrasonic liquid level sensor and the battery are electrically connected to the input terminal of the controller, and the input terminal of the display screen is electrically connected to the output terminal of the controller, which facilitates the monitoring of the surgical waste liquid volume.
[0012] Furthermore, a flow sensor is provided on the front side of the upper surface of the collection tank. The flow sensor is connected in series with the waste liquid pipe of the liquid extraction shell, and the output end of the flow sensor is electrically connected to the input end of the controller.
[0013] The method for collecting surgical waste fluid includes the following steps: 1): Connect the negative pressure connector to the external central negative pressure system, and connect the liquid suction pipe seat to the external liquid suction pipe; 2) The infusion bottle is supported by an adjustable infusion pole. 3): When the external central negative pressure system is working, negative pressure is generated inside the collection tank to collect the liquid; 4): The flow rate and volume of waste liquid collected in the collection tank are displayed in real time through an ultrasonic level sensor, flow sensor, and display screen. 5): After collection is completed, the frame is magnetically connected to the external drainage station via magnets, and the inlet and outlet connectors float and rise to connect with the pipelines of the external drainage station. 6): The external drainage station drains the surgical waste fluid from the collection tank through the drainage connector, while the inside of the collection tank is repeatedly cleaned through the inlet connector.
[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The surgical waste fluid collection method and system of this invention have the following advantages: 1. Connect the negative pressure connector to the external central negative pressure system using an air hose. Remove the sealing cap from the rear end of the suction tube seat. Connect the external suction tube to the tube head at the rear end of the suction tube seat. The central negative pressure system evacuates air from the inside of the collection tank through the air hose, negative pressure connector, and suction tube, creating a negative pressure inside the collection tank. The collection tank then draws and collects surgical waste fluid through the suction shell, suction tube seat, and suction tube. The surgical waste fluid is temporarily stored inside the collection tank. The filter inside the suction shell filters the passing surgical waste fluid to prevent residue from entering the inside of the collection tank. By using an external central negative pressure system, surgical waste fluid can be collected into a sealed collection tank, which is convenient for collection and avoids environmental pollution caused by surgical waste fluid.
[0015] 2. The ultrasonic liquid level sensor detects the liquid level inside the collection tank and converts it into an electrical signal, which is then transmitted to the controller. The controller processes the electrical signal and transmits it to the display screen for display. This allows for accurate understanding of the volume of waste liquid collected in the collection tank. At the same time, the liquid level inside the collection tank can be observed by the scale on the back of the collection tank. Equipped with ultrasonic liquid level detection, the collection tank's waste liquid volume is displayed in real time, facilitating the timely treatment of surgical waste liquid inside.
[0016] 3. Connect the external drainage station to the rear end of the frame, and simultaneously connect the positioning pin to the pin sleeve of the external drainage station. The magnet magnetically attracts the external drainage station, and the lifting unit of the external drainage station raises its connector to connect with the inlet and outlet connectors. The striker inside the connector pushes open the plugs inside the inlet and outlet connectors to achieve connection. In the unconnected state, the inlet and outlet connectors are in a closed, sealed state. Simultaneously, the top pin connects with the external drainage station to ensure accurate positioning. During connection, the spring, positioned by the nut, provides downward pressure to the support plate, allowing the support plate to move upwards along the sliding column. The sliding inlet and outlet connectors can float up and down, with springs providing downward pressure to ensure flexible and secure connections. The external drainage station then drains the surgical waste fluid from the collection tank via the outlet connector and drain pipe. After drainage, the external drainage station supplies hypochlorous acid to the inside of the collection tank via the inlet connector and delivery pipe to clean the tank cavity. Simultaneously, the cleaned waste fluid is discharged through the outlet connector. Once the process is complete, it can quickly and easily connect to the drainage station to achieve the discharge of internal surgical waste fluid and its own cleaning. Discharge is carried out through pipelines, preventing infection of medical personnel and ensuring high discharge safety. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the structure on the left side of the present invention; Figure 3 This is a cross-sectional view of the structure on the right side of the present invention; Figure 4 This is a cross-sectional view of the rear side of the present invention; Figure 5 This is an enlarged structural diagram of point A in the present invention; Figure 6 This is an enlarged structural diagram of section B of the present invention.
[0018] In the diagram: 1. Frame, 2. Collection tank, 3. Negative pressure connector, 4. Suction shell, 5. Suction tube seat, 6. Filter screen, 7. Sealing cap, 8. Ultrasonic level sensor, 9. Controller, 10. Display screen, 11. Battery, 12. Infusion rod holder, 13. Handwheel, 14. Nut block, 15. Lead screw, 16. Gear box, 17. Tube seat, 18. Sliding column, 19. Support plate, 20. Drain connector, 21. Inlet connector, 22. Spring, 23. Nut, 24. Top pin, 25. Positioning pin, 26. Magnet, 27. Flow sensor. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Please see Figure 1-6 This embodiment provides a technical solution: a surgical waste fluid collection system, including a frame 1; Frame 1: It contains a liquid collection tank 2. The lower front side of the frame 1 is equipped with a negative pressure connector 3. An air pipe connects the negative pressure connector 3 to an external central negative pressure system. The rear end of the negative pressure connector 3 is connected to the air extraction hole on the upper surface of the liquid collection tank 2 through an air extraction pipe. The central negative pressure system extracts air from the inside of the liquid collection tank 2 through the air pipe, negative pressure connector 3, and air extraction pipe. The lower front side of the frame 1 is equipped with a tube winding seat 17. When the external central negative pressure system stops working, the air pipe can be separated from the external central negative pressure system and then wound around the tube winding seat 17. Each waste liquid hole on the upper surface of the liquid collection tank 2 is equipped with a liquid extraction shell 4. The waste liquid pipe of the liquid extraction shell 4 is connected to the inside of the liquid collection tank 2. Each liquid extraction shell 4 has a filter screen 6 movably inserted inside. The rear end of the liquid extraction shell 4 is threadedly connected to a liquid extraction device. The outer arc surface of the tube seat 5 and the suction tube seat 5 are provided with symmetrically distributed sealing caps 7. The sealing caps 7 are all set to cooperate with the rear end of the vertically corresponding suction tube seat 5. The sealing caps 7 are removed from the rear end of the suction tube seat 5, and the external suction tube is connected to the tube head at the rear end of the suction tube seat 5. A negative pressure is formed inside the collection tank 2. Then the collection tank 2 draws and collects surgical waste liquid through the suction shell 4, the suction tube seat 5 and the suction tube. The surgical waste liquid will be temporarily stored inside the collection tank 2. The filter screen 6 inside the suction shell 4 filters the passing surgical waste liquid to prevent residue from entering the inside of the collection tank 2. The lower end of the frame 1 is provided with evenly distributed sliding columns 18. The sliding columns 18 are all slidably connected to the support plate 19. The left side of the upper surface of the support plate 19 is provided with a liquid inlet connector 21. A drain connector 20 is located on the right side. The upper end of the drain connector 20 is connected to the outlet hole on the lower surface of the collection tank 2 through an outlet pipe. The upper end of the inlet connector 21 is connected to the spray hole on the upper surface of the collection tank 2 through a delivery pipe. The external drain station drains the surgical waste fluid inside the collection tank 2 through the drain connector 20 and the drain pipe. After draining, the external drain station delivers hypochlorous acid to the inside of the collection tank 2 through the inlet connector 21 and the delivery pipe to clean the cavity of the collection tank 2. At the same time, the waste fluid after cleaning is discharged through the drain connector 20, completing the work. The lifting unit of the external drain station drives its connector to rise and connect with the inlet connector 21 and the drain connector 20. The striker inside the connector pushes open the plug inside the inlet connector 21 and the drain connector 20 to achieve connection. When connected, the inlet connector 21 and the outlet connector 20 are in a closed and sealed state. A spring 22 is movably sleeved on the middle of the outer arc surface of the slide column 18. Nuts 23 are threaded onto the upper end of the outer arc surface of the slide column 18. The spring 22 is located between the nut 23 and the support plate 19. With the nut 23 in place, the spring 22 provides downward pressure to the support plate 19. Simultaneously, the support plate 19 can slide up and down along the slide column 18. The inlet connector 21 and the outlet connector 20 can float up and down, with the spring 22 providing downward pressure, ensuring the flexibility and firmness of the connection. Magnets 26 are provided on both the left and right sides of the lower rear side of the frame 1. Two top pins 24 are provided in the middle of the support plate 19, which are inserted into the external outlet station. A positioning pin 25 is provided at the lower end of the interior of the frame 1.The external drainage station is inserted into the rear end of the frame 1, and the positioning pin 25 is inserted into the pin sleeve of the external drainage station. The magnet 26 is magnetically attracted to the external drainage station. The upper end of the frame 1 is slidably connected to the infusion rod holder 12, and the infusion bottle can be hung on the upper end of the infusion rod holder 12. The inside of the frame 1 is rotatably connected to the lead screw 15 through the bearing. The lower end of the outer arc surface of the lead screw 15 is threaded with a nut block 14. The rear end of the nut block 14 is fixedly connected to the lower end of the infusion rod holder 12. The middle part of the front side wall of the frame 1 A gearbox 16 is provided, with its output shaft fixedly connected to the upper end of a lead screw 15. The front end of the input shaft of the gearbox 16 extends out of the front side of the frame 1 and has a handwheel 13 at its end. Rotating the handwheel 13 causes the lead screw 15 to rotate via the gear set inside the gearbox 16. The lead screw 15 then drives the infusion rod holder 12 to move up and down via a nut block 14, thus adjusting the height of the infusion rod holder 12. An ultrasonic liquid level sensor 8 is installed at the detection hole on the upper surface of the collection tank 2. The upper end of the frame 1 has a large... A display screen 10 is located at a rectangular opening, and a battery 11 is located at a small rectangular opening at the top of the frame 1. A controller 9 is located at the upper part of the inside of the frame 1. The outputs of the ultrasonic level sensor 8 and the battery 11 are electrically connected to the input of the controller 9. The input of the display screen 10 is electrically connected to the output of the controller 9. Simultaneously, the ultrasonic level sensor 8 detects the liquid level inside the collection tank 2 and converts it into an electrical signal, which is transmitted to the controller 9. The controller 9 processes the electrical signal and transmits it to the display screen 10 for display. This allows for accurate understanding of the waste liquid capacity collected by the collection tank 2. The internal liquid level can also be observed using the scale on the back of the collection tank 2. A flow sensor 27 is located on the front of the upper surface of the collection tank 2. The flow sensor 27 is connected in series with the waste liquid pipe of the suction shell 4. The output of the flow sensor 27 is electrically connected to the input of the controller 9. The flow sensor 27 detects the flow rate of waste liquid flowing in at each time period and transmits it to the controller 9, which displays the flow rate on the display screen 10. This allows for real-time monitoring of the patient's bleeding and absorption during surgery.
[0021] The flow sensor 27 can also be replaced by a waste liquid monitor to monitor the flow rate, composition and other data of the collected waste liquid. When the data is abnormal, an alarm will be triggered to promptly remind the staff.
[0022] The method for collecting surgical waste fluid includes the following steps: 1): Connect the negative pressure connector 3 to the external central negative pressure system, and connect the liquid suction pipe seat 5 to the external liquid suction pipe; 2): The infusion bottle is supported by an adjustable infusion rod holder 12; 3): When the external central negative pressure system is working, negative pressure is generated inside the liquid collection tank 2 to collect the liquid; 4): The flow rate and volume of waste liquid collected in the collection tank 2 are displayed in real time through the ultrasonic level sensor 8, the flow sensor 27 and the display screen 10. 5): After collection is completed, the frame 1 is magnetically connected to the external drainage station via magnet 26, and the inlet connector 21 and the outlet connector 20 float and rise to connect with the pipeline of the external drainage station. 6): The external drainage station discharges the surgical waste fluid inside the collection tank 2 through the drainage connector 20, and at the same time, it repeatedly cleans the inside of the collection tank 2 through the inlet connector 21.
[0023] The working principle of the surgical waste fluid collection method and system provided by this invention is as follows: A trachea is used to connect the negative pressure connector 3 to an external central negative pressure system. The sealing cap 7 is removed from the rear end of the suction tube seat 5. The external suction tube is connected to the tube head at the rear end of the suction tube seat 5. The central negative pressure system evacuates air from the inside of the collection tank 2 through the trachea, negative pressure connector 3, and suction tube, creating a negative pressure inside the collection tank 2. Then, the collection tank 2 draws and collects the surgical waste fluid through the suction shell 4, suction tube seat 5, and suction tube. The flow sensor 27 detects the flow rate of the waste fluid flowing through the waste fluid tube in the suction shell 4. The surgical waste fluid is temporarily stored inside the collection tank 2. The filter screen 6 inside the suction shell 4 filters the passing surgical waste fluid to prevent residue from entering. Inside the collection tank 2, the filter screen 6 collects residue. The filter screen 6 can be removed and cleaned by removing the suction tube seat 5. Simultaneously, the ultrasonic level sensor 8 detects the liquid level inside the collection tank 2 and converts it into an electrical signal, which is transmitted to the controller 9. The controller 9 processes the electrical signal and transmits it to the display screen 10 for display, allowing for accurate understanding of the waste liquid collected by the collection tank 2. The internal liquid level can also be observed using the scale on the back of the collection tank 2. During use, the infusion bottle can be hung on the upper end of the infusion pole stand 12, and the height of the infusion pole stand 12 can be adjusted according to usage needs. Adjustment is achieved by rotating the handwheel 13, which drives the lead screw 15 to rotate via the gear set inside the gearbox 16. The lead screw 15... Nut block 14 drives the infusion rod holder 12 to move up and down, thereby adjusting the height of the infusion rod holder 12. After the surgical waste fluid is collected, the external central negative pressure system stops working. Then, the trachea can be separated from the external central negative pressure system, and then the trachea is wound around the tube holder 17. Then, the external drainage station is inserted into the rear end of the frame 1, and at the same time, the positioning pin 25 is inserted into the pin sleeve of the external drainage station. The magnet 26 is magnetically attracted to the external drainage station. The lifting unit of the external drainage station drives its connector to rise and insert into the inlet connector 21 and the drainage connector 20. The striker inside the connector pushes open the plug inside the inlet connector 21 and the drainage connector 20 to achieve connection. In the unconnected state, the inlet connector 21 and the drainage connector 20 are connected. The head 20 is in a closed and sealed state, and the top pin 24 is inserted into the external drainage station to ensure accurate positioning. During insertion, the spring 22 provides downward pressure to the support plate 19 under the positioning of the nut 23. At the same time, the support plate 19 can slide up and down along the sliding column 18. The inlet connector 21 and the outlet connector 20 can float up and down, and the spring 22 provides downward pressure to ensure the flexibility and firmness of the connection. Then, the external drainage station discharges the surgical waste fluid inside the collection tank 2 through the outlet connector 20 and the outlet pipe. After the discharge is completed, the external drainage station delivers hypochlorous acid to the inside of the collection tank 2 through the inlet connector 21 and the delivery pipe to clean the cavity of the collection tank 2. At the same time, the waste fluid after cleaning is discharged through the outlet connector 20, completing the work.
[0024] It is worth noting that the controller 9, ultrasonic level sensor 8, display screen 10, flow sensor 27 and battery 11 disclosed in the above embodiments can be freely configured according to the actual application scenario. The controller 9 controls the operation of the ultrasonic level sensor 8, display screen 10, flow sensor 27 and battery 11 using methods commonly used in the prior art.
[0025] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A surgical waste collection system, characterized by: Including rack (1); The frame (1) is equipped with a liquid collection tank (2) inside. The lower end of the front side of the frame (1) is equipped with a negative pressure connector (3). The rear end of the negative pressure connector (3) is connected to the air extraction hole on the upper surface of the liquid collection tank (2) through an air extraction pipe. The lower end of the front side of the frame (1) is equipped with a tube seat (17). The waste liquid hole on the upper surface of the liquid collection tank (2) is equipped with a liquid extraction shell (4). The inside of the liquid extraction shell (4) is movably inserted with a filter screen (6). The rear end of the liquid extraction shell (4) is threadedly connected with a liquid extraction tube seat (5). The outer arc surface of the liquid extraction tube seat (5) is equipped with symmetrically distributed sealing caps (7). The sealing caps (7) are all matched with the rear end of the vertically corresponding liquid extraction tube seat (5).
2. The surgical waste fluid collection system of claim 1, wherein: The lower end of the frame (1) is provided with evenly distributed sliding columns (18), all of which are slidably connected to the support plate (19). The left side of the upper surface of the support plate (19) is provided with a liquid inlet connector (21), and the right side of the upper surface of the support plate (19) is provided with a liquid drain connector (20). The upper end of the liquid drain connector (20) is connected to the liquid outlet hole on the lower surface of the liquid collection tank (2) through a liquid outlet pipe, and the upper end of the liquid inlet connector (21) is connected to the spray hole on the upper surface of the liquid collection tank (2) through a liquid delivery pipe.
3. The surgical waste fluid collection system of claim 2, wherein: Springs (22) are movably sleeved in the middle of the outer arc surface of the sliding column (18), and nuts (23) are threadedly connected to the upper end of the outer arc surface of the sliding column (18). The springs (22) are located between the nuts (23) and the support plate (19).
4. The surgical waste fluid collection system of claim 2, wherein: Magnets (26) are provided on both the left and right sides of the lower rear side of the frame (1), two top pins (24) are provided in the middle of the support plate (19), and a positioning pin (25) is provided at the lower end inside the frame (1).
5. The surgical waste fluid collection system of claim 1, wherein: The upper end of the frame (1) is slidably connected to an infusion rod holder (12).
6. The surgical waste fluid collection system of claim 5, wherein: The frame (1) is rotatably connected to a lead screw (15) via a bearing. The lower end of the outer arc surface of the lead screw (15) is threaded with a nut block (14). The rear end of the nut block (14) is fixedly connected to the lower end of the infusion rod frame (12).
7. The surgical waste fluid collection system of claim 6, wherein: A gearbox (16) is provided in the middle of the front side wall of the frame (1). The output shaft of the gearbox (16) is fixedly connected to the upper end of the lead screw (15). The front end of the input shaft of the gearbox (16) extends out of the front side of the frame (1) and a handwheel (13) is provided at the end.
8. The surgical waste fluid collection system of claim 1, wherein: An ultrasonic liquid level sensor (8) is provided at the detection hole on the upper surface of the liquid collection tank (2). A display screen (10) is provided at the large rectangular hole at the upper end of the frame (1). A battery (11) is provided at the small rectangular hole at the upper end of the frame (1). A controller (9) is provided at the upper end inside the frame (1). The output ends of the ultrasonic liquid level sensor (8) and the battery (11) are electrically connected to the input end of the controller (9). The input end of the display screen (10) is electrically connected to the output end of the controller (9).
9. The surgical waste fluid collection system of claim 8, wherein: A flow sensor (27) is provided on the front side of the upper surface of the liquid collection tank (2). The flow sensor (27) is connected in series with the waste liquid pipe of the liquid extraction shell (4). The output end of the flow sensor (27) is electrically connected to the input end of the controller (9).
10. A method of collecting surgical waste fluid, characterized by: The surgical waste fluid collection system according to any one of claims 1-9 includes the following steps: 1): Connect the negative pressure connector (3) to the external central negative pressure system and connect the liquid suction pipe seat (5) to the external liquid suction pipe; 2): The infusion bottle is supported by an adjustable infusion rod holder (12); 3): When the external central negative pressure system is working, negative pressure is generated inside the liquid collection tank (2) to collect the liquid; 4): The flow rate and volume of waste liquid collected by the collection tank (2) are displayed in real time through the ultrasonic level sensor (8), flow sensor (27) and display screen (10); 5): After collection is completed, the frame (1) is magnetically connected to the external drainage station through the magnet (26), and the inlet connector (21) and the outlet connector (20) float and rise to connect with the pipeline of the external drainage station; 6): The external drainage station discharges the surgical waste liquid inside the collection tank (2) through the drainage connector (20), and at the same time, the inside of the collection tank (2) is repeatedly cleaned through the inlet connector (21).