Visual dynamic monitoring method and system for flow velocity and flow of postoperative drainage liquid of patient

Abstract

The invention discloses a visual dynamic monitoring method and system for the flow velocity and flow of postoperative drainage liquid of a patient, and relates to the technical field of drainage liquid monitoring. The method comprises the steps that a drainage device, a monitoring device and a display device are arranged, and a liquid level sensor in the monitoring device is used for obtaining an electric signal from the drainage device; acquiring an output voltage from the drainage device by using a flow velocity sensor in the monitoring device; a monitoring host in the monitoring device is used for conducting flow calculation on the electric signals, and the flow of drainage liquid is obtained and transmitted to a display device; calculating the flow velocity of the output voltage by using the monitoring host to obtain the flow velocity of the drainage liquid, and transmitting the flow velocity to a display device; the flow of the drainage liquid and the flow velocity of the drainage liquid are subjected to visualization and early warning judgment based on the display device, and the flow velocity and the flow of the drainage liquid are monitored visually and dynamically. Through the stepped electrode of the liquid level sensor and the flow velocity sensor, accurate measurement of drainage liquid is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage fluid monitoring, and in particular to a method and system for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery of a patient. Background Art

[0002] With the rapid development of modern medical technology and the popularization of precision medicine concepts, the importance of postoperative drainage management in clinical practice has become increasingly prominent. As a key link in postoperative treatment, the effect of drainage technology directly affects the patient's recovery speed and prognosis quality. Traditional drainage tubes can play a role in drainage. The drainage fluid discharges the patient's waste fluid into the drainage bag through the pipe, thereby achieving the purpose of curing the disease. However, it should be noted that for safety reasons, the amount of drainage fluid drainage on the first day of surgery for most postoperative patients is limited, and medical staff are required to accurately control the flow of the patient's drainage fluid to ensure that the patient recovers as soon as possible under safe conditions; however, traditional drainage management methods mainly rely on the experience and judgment of medical staff and intermittent observation. This method often seems powerless when faced with complex and changeable postoperative situations, such as Due to the busy work of medical staff, they cannot observe the drainage volume 24 hours a day, which often leads to excessive drainage fluid release. Poor control of drainage fluid can cause water and electrolyte imbalance or uneven chest and mediastinal pressure in patients, leading to shock and cardiac arrest. In recent years, the medical community has begun to try to apply advanced sensing technology and data analysis methods to the field of drainage management. For example, some researchers have proposed a liquid level monitoring system based on photoelectric sensors to prevent drainage fluid overflow. Other scholars have developed an intelligent drainage bag with a simple alarm function, which sends a reminder when the drainage fluid reaches a preset capacity. However, in clinical work, the control of the drainage fluid volume is adjusted according to the patient's condition, age and drug properties, and is not static. Therefore, these innovations have improved the effect of drainage management to a certain extent, but there are still many shortcomings.

[0003] The shortcomings of the current common solutions include: first, most existing technologies only focus on a single parameter, such as liquid level, and ignore the dynamic changes of flow and flow rate indicators during the drainage process; second, due to the lack of real-time and accurate monitoring of drainage fluid flow and flow rate, it is difficult for medical staff to detect and deal with drainage abnormalities in a timely manner, increasing the risk of postoperative complications; in addition, due to the discontinuity and inaccuracy of monitoring data, it is difficult for doctors to adjust treatment plans in a timely manner according to the dynamic changes in drainage conditions, affecting the personalization and precision of treatment; finally, the deficiencies of existing technologies in early warning mechanisms and data visualization increase the workload of medical staff and reduce work efficiency. These problems not only affect the quality of patients' rehabilitation, but also bring additional pressure to medical resources. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is how to provide a method for solving the problem of poor control of drainage fluid after surgery in clinical patients, using liquid level sensors and flow rate sensors as monitoring media to solve the problem of quantitative and constant speed of drainage fluid, and converting electrical signals into digital signals through digital modules to achieve a method for visual observation of drainage fluid.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In the first aspect, an embodiment of the present invention provides a method for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery of a patient, which includes arranging a drainage device, a monitoring device and a display device, using a liquid level sensor in the monitoring device to obtain an electrical signal from the drainage device, and using a flow rate sensor in the monitoring device to obtain an output voltage from the drainage device; using a monitoring host in the monitoring device to perform flow calculation on the electrical signal to obtain the flow rate of the drainage fluid and transmit it to a display device; using the monitoring host to perform flow rate calculation on the output voltage to obtain the flow rate of the drainage fluid and transmit it to a display device; based on the display device, the flow rate and flow rate of the drainage fluid are visualized and early warning judgments are made to achieve visual dynamic monitoring of the flow rate and flow rate of the drainage fluid.

[0008] As a preferred embodiment of the method for visualizing dynamic monitoring of flow rate and flow rate of drainage fluid after surgery of a patient described in the present invention, the drainage device comprises a drainage bottle, a drainage tube and a drain valve; the monitoring device comprises a signal transmission module, a monitoring host, a lead wire, a flow rate sensor, a liquid level sensor, a sub-connector, a female connector, a small resistor, a monitoring electrode, a grounding electrode and a clamp; the display device is a computer display; the liquid level sensor is completely placed inside the entire drainage bottle, close to the front wall of the drainage bottle, and the grounding electrode above the liquid level sensor is located at the right edge of the electrode panel, extending upward to the female connector and downward to the female connector. At the lowest end of the drainage bottle, there is a monitoring electrode on the left side of the electrode panel for sensing changes in the liquid level. The monitoring electrodes are distributed in a stepped manner on the left side of the electrode panel, and each monitoring electrode has a small resistor of different sizes; the monitoring electrode and the grounding electrode are gathered together at the female connector, and the female connector is connected to the sub-connector of the monitoring host in a spiral manner. The monitoring host is also connected to the flow rate sensor located on the drainage tube through a lead wire; the monitoring host includes a power supply, a converter, a current output module I, a voltage amplification module, a voltage output module II, a central computing module and an analog signal output module.

[0009] As a preferred solution of the method for visualizing dynamic monitoring of the flow rate and flow rate of drainage fluid after surgery of a patient described in the present invention, wherein: obtaining an electrical signal using the liquid level sensor in the monitoring device includes: using the liquid level sensor to monitor the liquid level in the drainage bottle, if the liquid level in the drainage bottle changes, then judging the height of the liquid level, if the height of the liquid level reaches the monitoring electrode, then using the grounding electrode and the power supply on the monitoring host to achieve circuit connection, generate an electrical signal and transmit it to the monitoring host; if the height of the liquid level does not reach the monitoring electrode, then the circuit between the power supply on the grounding electrode and the power supply on the monitoring host is disconnected, and no electrical signal is generated; if the height of the drainage bottle reaches the monitoring electrode, then the grounding electrode and the power supply on the monitoring host are disconnected, and no electrical signal is generated; if the height of the drainage bottle reaches the monitoring electrode, then the grounding electrode and the power supply on the monitoring host are disconnected, and no electrical signal is generated. If the liquid level in the bottle does not change, the liquid level in the drainage bottle continues to be monitored; obtaining the output voltage using the flow rate sensor in the monitoring device includes the following steps: connecting the two ends of the flow rate sensor to a power source, and current starts to flow, so that the charge carriers follow a linear path from one end of the plate to the other end, and the movement of the charge carriers causes the generation of a magnetic field; when the magnetic field is generated, a DC voltage is applied, and the current direction of the DC voltage is orthogonal to the direction of the magnetic field; when the drainage fluid passes through the turbine switch shell of the flow rate sensor and drives the magnetic rotor to rotate, a rotating magnetic field with different magnetic poles is generated, cutting the magnetic induction lines, generating a pulse level, and then obtaining an output voltage and transmitting it to the monitoring host.

[0010] As a preferred solution of the method for visualizing dynamic monitoring of the flow rate and flow rate of drainage fluid after surgery of patients described in the present invention, the calculation of the electrical signal includes the following steps: using the converter on the monitoring host to convert the received electrical signal, and using the current output module I to transmit the converted current to the central calculation module; using the central calculation module to calculate the current and rated voltage, obtain the corresponding resistance and compare it with the small resistance of the monitoring electrode to obtain the liquid level corresponding to the current; combining the liquid level and the cross-sectional area of ​​the drainage bottle to calculate, obtain the flow rate of the drainage fluid, and transmit the liquid level and the flow rate of the drainage fluid to the analog signal output module; based on the analog signal output module, using GPRS technology to transmit the liquid level and the flow rate of the drainage fluid to the display device.

[0011] As a preferred solution of the method for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery of a patient described in the present invention, the flow rate calculation of the output voltage includes the following steps: using the voltage amplification module on the monitoring host to amplify the received output voltage, and transmitting the amplified output voltage to the voltage output module II; using the voltage output module II to transmit the amplified output voltage to the central calculation module; using the central calculation module to calculate the amplified output voltage, obtain the corresponding flow rate of the drainage fluid and transmit it to the analog signal output module; based on the analog signal output module, using GPRS technology to transmit the flow rate of the drainage fluid to the display device.

[0012] As a preferred solution of the method for visualizing dynamic monitoring of the flow rate and flow rate of drainage fluid after surgery of a patient described in the present invention, wherein: the computer display on the display device includes a flow monitoring area and a flow velocity monitoring area; visualizing the flow rate and flow velocity of the drainage fluid includes: in the flow monitoring area, drawing a liquid volume square wave and a total liquid volume display area based on the flow rate of the drainage fluid; in the flow velocity monitoring area, drawing a flow velocity change wave based on the flow velocity of the drainage fluid, and drawing a flow velocity warning line according to the set flow velocity alarm threshold.

[0013] As a preferred embodiment of the method for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery of a patient described in the present invention, the early warning judgment of the flow rate and flow rate of the drainage fluid includes: judging the liquid level, if the liquid level is ≥ the first threshold, it is judged that the drainage fluid in the drainage bottle is sufficient, the computer display gives an alarm and sends a signal, and controls the clamp to close the drainage tube; if the liquid level is < the first threshold, it is judged that the drainage fluid in the drainage bottle is insufficient, the computer display continues to visually and dynamically monitor the drainage fluid flow rate, and the clamp remains unchanged; judging the flow rate change wave, if the flow rate change wave is ≥ the flow rate warning line, it is judged that the flow rate of the drainage fluid exceeds the flow rate warning threshold, the computer display gives an alarm, and prompts medical personnel to pay attention to the changes in the drainage fluid in time; if the flow rate change wave is < the flow rate warning line, it is judged that the flow rate of the drainage fluid is within the normal range, and the computer display continues to visually and dynamically monitor the flow rate of the drainage fluid.

[0014] In the second aspect, in order to further solve the safety problems existing in drainage fluid monitoring, the present invention provides a visual dynamic monitoring system for the flow rate and flow rate of drainage fluid after surgery, which includes: a data acquisition module, which is used to arrange a drainage device, a monitoring device and a display device, and use the liquid level sensor in the monitoring device to obtain an electrical signal from the drainage device, and use the flow rate sensor in the monitoring device to obtain an output voltage from the drainage device; a flow calculation module, which is used to use the monitoring host in the monitoring device to calculate the flow rate of the electrical signal, obtain the resistance data and compare it with the monitoring electrode in the monitoring device, obtain the liquid level height of the drainage fluid and the flow rate of the drainage fluid and transmit it to the display device; a flow rate calculation module, which is used to use the monitoring host in the monitoring device to calculate the flow rate of the output voltage, obtain the flow rate of the drainage fluid and transmit it to the display device; a dynamic monitoring module, which is used to use the display device to visualize the flow rate and flow rate of the drainage fluid, and make early warning judgments in combination with the liquid level height, flow rate and flow rate of the drainage fluid, so as to realize visual dynamic monitoring of the flow rate and flow rate of the drainage fluid.

[0015] In a third aspect, an embodiment of the present invention provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: when the computer program is executed by the processor, any step of the method for visualizing and dynamically monitoring the flow rate and flow rate of postoperative drainage fluid of a patient as described in the first aspect of the present invention is implemented.

[0016] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, any step of the method for visualizing and dynamically monitoring the flow rate and flow rate of postoperative drainage fluid in a patient as described in the first aspect of the present invention is implemented.

[0017] The beneficial effects of the present invention are as follows: the present invention improves the liquid level sensor, installs a different small resistor on each layer of monitoring electrodes, so that each layer of the electrode panel corresponds to a different amount of drainage fluid. When the liquid surface of the drainage fluid contacts each layer of monitoring electrodes, the circuit generates different electrical signals, and then obtains the corresponding drainage fluid flow rate according to the different sizes of the electrical signals, thereby improving the accuracy and uniqueness of the drainage fluid flow rate; through the stepped electrode design of the liquid level sensor and the Hall effect principle of the flow rate sensor, accurate measurement of the drainage fluid level and flow rate is achieved; by simultaneously monitoring the liquid level and flow rate, the accuracy of the data can be cross-verified, the reliability of the system and the accuracy and comprehensiveness of data acquisition are improved, and the monitoring of the drainage fluid status is made more accurate; through the intuitive graphical interface, medical staff can monitor the patient's drainage status at any time, thereby improving the utilization efficiency of medical resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1 This is an overall flow chart of the method for visualizing dynamic monitoring of drainage fluid velocity and flow rate of patients after surgery in Example 1.

[0020] Figure 2 Schematic diagram of the structure of the drainage device and the monitoring device in Example 1.

[0021] Figure 3 This is a flow chart for calculating the flow rate and flow rate of drainage fluid after surgery for patients in Example 1.

[0022] Figure 4 This is the architecture diagram of the monitoring system in Example 1.

[0023] Figure 5 Schematic diagram of the flow rate change of drainage fluid over 24 hours in Example 2. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Example 1

[0028] Reference Figure 1 to Figure 4 , which is the first embodiment of the present invention, provides a method for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery.

[0029] The existing drainage bags have the following main problems: First, the traditional drainage tube can play a role in drainage. The drainage fluid discharges the waste fluid in the body into the drainage bag through the tube to achieve the purpose of curing the disease. However, the amount of drainage fluid drainage on the first day of surgery for most patients is limited. Due to the busy work of nursing workers, they cannot observe the drainage volume of drainage fluid 24 hours a day, which often causes excessive drainage fluid release. Poor control of drainage fluid can cause water and electrolyte disorders in the body, uneven chest and mediastinal pressure, and cause shock and cardiac arrest in patients. Secondly, the release speed of drainage fluid is It is related to factors such as the patient's body position, the location of the drainage tube, the frequency of turning over, and the patient's activities. Multiple uncontrollable factors make it more difficult to manage the drainage fluid flow rate of postoperative patients; finally, although the existing new technologies have some innovations in liquid level, most of them are aimed at preventing the reflux of drainage fluid. For example, a drainage bag with an alarm function will only alarm when the drainage fluid reaches a certain total amount. However, in clinical work, the control of the drainage fluid volume is adjusted according to the patient's condition, age and the properties of the medicine, and it is not fixed. Therefore, it cannot solve the problem of monitoring the drainage fluid flow and flow rate.

[0030] The present application provides an effective solution to the above-mentioned problems. Next, a method for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery of the patient will be described in detail in combination with multiple embodiments.

[0031] Figure 1 The overall flow chart of the method for visualizing dynamic monitoring of drainage fluid velocity and flow rate after surgery of a patient is shown, including:

[0032] S1: Arrange a drainage device, a monitoring device and a display device, use the liquid level sensor in the monitoring device to obtain an electrical signal from the drainage device, and use the flow rate sensor in the monitoring device to obtain an output voltage from the drainage device.

[0033] Preferably, Figure 2 It is a schematic diagram of the structure of the drainage device and the monitoring device. The drainage device includes a drainage bottle 104, a drainage tube 103 and a drainage valve 105.

[0034] Preferably, the monitoring device includes a signal transmission module 302, a monitoring host 301, a lead wire 303, a flow rate sensor 101, a liquid level sensor 201, a sub-connector 304, a female connector 205, a small resistor 203, a monitoring electrode 204, a grounding electrode 202 and a clamp 102.

[0035] Preferably, the display device is a computer monitor.

[0036] Furthermore, the liquid level sensor is completely placed inside the entire drainage bottle, close to the front wall of the drainage bottle. The ground electrode above the liquid level sensor is located at the right edge of the electrode panel, extending upward to the female connector and downward to the lowest end of the drainage bottle. There are several monitoring electrodes on the left side of the electrode panel for sensing changes in the liquid level. The monitoring electrodes are distributed in a stepped manner on the left side of the electrode panel, and each monitoring electrode has a small resistor of different sizes.

[0037] Specifically, the monitoring electrode and the grounding electrode are brought together at the female connector, the female connector is connected to the sub-connector of the monitoring host in a spiral manner, and the monitoring host is simultaneously connected to the flow rate sensor located on the drainage tube through a lead wire.

[0038] Furthermore, there are several analysis modules inside the monitoring host, including a power supply, a converter, a current output module I, a voltage amplification module, a voltage output module II, a central calculation module and an analog signal output module.

[0039] Specifically, using the liquid level sensor in the monitoring device to obtain an electrical signal includes: using the liquid level sensor to monitor the liquid level in the drainage bottle; if the liquid level in the drainage bottle changes, the height of the liquid level is judged; if the height of the liquid level reaches the monitoring electrode, the ground electrode and the power supply on the monitoring host are used to achieve circuit connectivity, generate an electrical signal and transmit it to the monitoring host.

[0040] If the height of the liquid level does not reach the monitoring electrode, the circuit between the power supply on the ground electrode and the power supply on the monitoring host is disconnected, and no electrical signal is generated.

[0041] If the liquid level in the drainage bottle does not change, continue to monitor the liquid level in the drainage bottle.

[0042] It should be noted that when the drainage fluid in the drainage bottle increases, due to the different liquid level heights, it reaches monitoring electrodes at different steps, and the size of the small resistor on each monitoring electrode is different, resulting in different sizes of resistance in the circuit. Under rated voltage conditions, the current generated in the circuit is also different. Therefore, each time the liquid level of the drainage bottle changes, the drainage fluid will immerse the monitoring electrodes at different heights, forming small resistors of different sizes, and then generating different electrical signals. The liquid level sensor senses the difference in liquid levels through the different resistances of the monitoring electrodes corresponding to different liquid levels, and then calculates the height of the liquid level in the drainage bottle through the generated electrical signals. When setting multiple monitoring electrodes of different heights, the monitoring electrodes can be set at different height intervals according to the specifications of the drainage bottle and the requirements for drainage fluid monitoring accuracy. When setting a small resistor on each monitoring electrode, it can be increased or decreased according to a certain rule, so that the liquid level interval can be located more quickly when identifying the liquid level of the drainage fluid, which is convenient for subsequent calculations.

[0043] Preferably, by completely placing the liquid level sensor inside the drainage bottle and providing monitoring electrodes with a stepped distribution, accurate sensing of the drainage fluid level is achieved, allowing the system to capture tiny changes in the liquid level, thereby improving the accuracy and sensitivity of monitoring.

[0044] Specifically, obtaining the output voltage using the flow rate sensor in the monitoring device includes the following steps: connecting the two ends of the flow rate sensor to a power source, and current starts to flow, causing the charge carriers to follow a linear path from one end of the plate to the other end, and the movement of the charge carriers causes the generation of a magnetic field.

[0045] When a magnetic field is generated, a certain DC voltage is applied and the current direction of the DC voltage is orthogonal to the direction of the magnetic field.

[0046] When the drainage fluid passes through the turbine switch housing of the flow rate sensor and drives the magnetic rotor to rotate, a rotating magnetic field with different magnetic poles is generated, cutting the magnetic induction lines and generating a pulse level, which then uses the Hall sensor to generate an output voltage and transmit it to the monitoring host.

[0047] It should be noted that the rotor speed determines the frequency of the distance and angle changes between the magnet and the Hall sensor. The faster the rotor speed, the higher the frequency of the magnet passing through the Hall sensor, and the faster the generated Hall voltage changes; the slower the rotor speed, the lower the frequency of the magnet passing through the Hall sensor, and the slower the generated Hall voltage changes; these changing Hall voltages are amplified by the voltage amplification module and then enter the voltage output module II and are then transmitted to the central calculation module for calculation. By measuring the frequency and amplitude of these voltage changes, the rotor speed can be calculated, and then the flow rate of the drainage fluid can be inferred, and then transmitted to the monitoring platform through the analog signal output module via GPRS.

[0048] Preferably, by utilizing a flow rate sensor based on the Hall effect, contactless measurement of the drainage fluid flow rate can be achieved, avoiding the risk of contamination caused by traditional contact measurement, and at the same time will not interfere with the flow of the drainage fluid, ensuring the accuracy of the measurement and patient safety; by connecting the liquid level sensor and the flow rate sensor to the monitoring host, an integrated data acquisition system is established, which realizes real-time monitoring of the drainage fluid status, providing a reliable basis for subsequent data processing and analysis.

[0049] S2: Utilize the monitoring host in the monitoring device to calculate the flow rate of the electrical signal, obtain the flow rate of the drainage fluid and transmit it to the display device.

[0050] Preferably, Figure 3 The figure shows a flow chart for calculating the flow rate and flow rate of drainage fluid after surgery. The calculation of the electrical signal includes the following steps: using the converter on the monitoring host to convert the received electrical signal, and using the current output module I to transmit the converted current to the central calculation module.

[0051] The central calculation module is used to calculate the current and rated voltage, and the corresponding resistance is obtained and compared with the small resistance of the monitoring electrode to obtain the liquid level corresponding to the current.

[0052] The flow rate of the drainage fluid is obtained by calculating the liquid level height and the cross-sectional area of ​​the drainage bottle, and the liquid level height and the flow rate of the drainage fluid are transmitted to the analog signal output module.

[0053] Based on the analog signal output module, the liquid level height and drainage fluid flow are transmitted to the display device using GPRS technology.

[0054] It should be noted that since there are monitoring electrodes distributed in a stepped manner on the left side of the electrode panel of the liquid level sensor used in this example, when the liquid surface of the drainage fluid contacts each layer of monitoring electrodes, the ground electrode and the power supply on the monitoring host are connected, thereby realizing circuit connectivity. At the same time, since each monitoring electrode has a small resistor of different sizes, the liquid surface of the drainage fluid contacts different monitoring electrodes and will form resistances of different sizes. Under rated voltage conditions, electrical signals of different sizes are generated in the circuit. Therefore, by pre-recording the resistance size and liquid level height corresponding to each layer of monitoring electrodes, when an electrical signal is detected, the resistance size is calculated by combining the rated voltage, and then the corresponding liquid level height is obtained by resistance comparison.

[0055] Preferably, by processing the electrical signal using the converter and the current output module I, the quality and reliability of the signal are improved, the environmental interference and signal attenuation are effectively reduced, and the accuracy of subsequent calculations is ensured; by considering the characteristics of different monitoring electrodes, the current and voltage are calculated using the central calculation module and compared with the preset resistance value, the precise measurement of the liquid level is achieved, and the accuracy of the liquid level measurement is improved; the flow rate of the drainage fluid is calculated in combination with the liquid level and the cross-sectional area of ​​the drainage bottle, and the data is transmitted through GPRS technology, thereby realizing remote real-time monitoring of the drainage fluid flow rate, enabling medical staff to grasp the patient's drainage situation anytime and anywhere, and improving the monitoring efficiency and response speed.

[0056] S3: Calculate the flow rate of the output voltage using the monitoring host, obtain the flow rate of the drainage fluid and transmit it to the display device.

[0057] Preferably, the flow velocity calculation of the output voltage includes the following steps: since the output voltage generated by the Hall element is extremely small, the received output voltage is amplified by the voltage amplification module on the monitoring host, and the amplified output voltage is transmitted to the voltage output module II

[0058] The voltage output module II is used to transmit the amplified output voltage to the central computing module.

[0059] The amplified output voltage is calculated by the central computing module to obtain the corresponding flow rate of the drainage fluid and transmit it to the analog signal output module. Since the output signal frequency of the Hall element is proportional to the rotation speed of the magnetic rotor, and the speed of the magnetic rotor is proportional to the flow rate of the drainage fluid, the flow rate of the drainage fluid can be inferred.

[0060] Based on the analog signal output module, the flow rate of the drainage fluid is transmitted to the display device using GPRS technology.

[0061] Preferably, the voltage amplification module is used to amplify the weak output voltage of the Hall element, thereby improving the signal strength and signal-to-noise ratio, and enhancing the sensitivity and accuracy of the drainage fluid flow rate measurement.

[0062] S4: Visualize and make early warning judgments on the flow rate and flow velocity of the drainage fluid based on the display device, so as to realize visual dynamic monitoring of the flow velocity and flow rate of the drainage fluid.

[0063] Preferably, the computer display on the display device includes a flow monitoring area and a flow velocity monitoring area.

[0064] Specifically, the visualization of the flow rate and flow velocity of the drainage fluid includes: in the flow monitoring area, drawing a liquid volume square wave and a total liquid volume display area based on the flow rate of the drainage fluid, wherein the liquid volume square wave increases as the drainage fluid increases, and the total liquid volume display area is the sum of the flow rates of the drainage fluid, and the total liquid volume display area is located in the upper left corner of the liquid volume square wave.

[0065] In the flow rate monitoring area, a flow rate variation wave is drawn based on the flow rate of the drainage fluid, and a flow rate warning line is drawn according to the set flow rate alarm threshold, wherein the flow rate variation wave fluctuates above and below the flow rate warning line.

[0066] It should be noted that the computer display on the display device is a multi-interface monitoring device, which uses a stepped square wave to reflect the flow change of the drainage fluid, and is used to reflect the changing trend of the drainage fluid flow in the drainage bottle with time; the total liquid volume display area displays the total flow of the current drainage fluid at all times, which is used to observe the overall flow of the drainage fluid in the current drainage bottle, and then grasp the overall situation; in the flow rate monitoring area, the flow rate change of the drainage fluid is reflected by using a wave wave, and the application of the waveform will display the simulation data in a visual way, and set an adjustable flow rate warning line, and then by comparison, it can be distinguished whether the flow rate of the drainage fluid exceeds the flow rate alarm threshold. It has high recognition and contrast, which is convenient for clinical medical staff to observe.

[0067] Furthermore, the early warning judgment of the flow rate and flow rate of the drainage fluid includes: judging the liquid level. If the liquid level is ≥ the first threshold, it is determined that there is sufficient drainage fluid in the drainage bottle, the computer display alarms and sends a signal, and the clamp is controlled to close the drainage tube.

[0068] If the liquid level is less than the first threshold, it is determined that the drainage fluid in the drainage bottle is insufficient, the computer display continues to perform visual dynamic monitoring of the drainage fluid flow, and the clamp remains unchanged.

[0069] The flow velocity change wave is judged. If the flow velocity change wave ≥ the flow velocity warning line, it is determined that the flow velocity of the drainage fluid exceeds the flow velocity alarm threshold. The computer monitor alarms to prompt medical staff to pay attention to the changes in the drainage fluid in time.

[0070] If the flow rate change wave is less than the flow rate warning line, the flow rate of the drainage fluid is determined to be within the normal range, and the computer monitor continues to perform visual dynamic monitoring of the drainage fluid flow rate.

[0071] Specifically, with respect to the various thresholds in the early warning judgment of the flow rate and flow velocity of the drainage fluid, first, when judging the liquid level in the drainage bottle, a safe upper limit of the drainage fluid flow rate is determined through a large amount of clinical time, and the upper limit of the patient's drainage fluid flow rate is adjusted according to the patient's condition, age and drug properties to obtain the best first threshold; when judging the flow velocity of the drainage fluid, the initial drainage speed is adjusted in combination with the patient's condition and recovery time to obtain the best flow velocity alarm threshold while ensuring the safety of the patient, and then the flow velocity warning line is drawn.

[0072] It should be noted that if Figure 4 The figure shows the architecture diagram of the monitoring system proposed in the present invention. The method for visualizing dynamic monitoring of drainage fluid flow rate and flow rate proposed in this example can realize simultaneous monitoring of multiple monitoring points by constructing a basic equipment layer, a network transmission layer, a cloud platform layer, and a terminal strategy layer. The multi-party transmission of the data platform ensures that the beds in charge, the nurse center, and the doctor center can obtain changes in the patient's drainage fluid in a timely and effective manner, providing convenience for scientific medical decision-making.

[0073] The present embodiment also provides a visual dynamic monitoring system for the flow rate and flow rate of drainage fluid after surgery of a patient, comprising: a data acquisition module, which is used to arrange a drainage device, a monitoring device and a display device, and to obtain an electrical signal from the drainage device using a liquid level sensor in the monitoring device, and to obtain an output voltage from the drainage device using a flow rate sensor in the monitoring device; a flow calculation module, which is used to use a monitoring host in the monitoring device to perform flow calculation on the electrical signal, obtain resistance data and compare it with the monitoring electrodes in the monitoring device, obtain the liquid level height and flow rate of the drainage fluid and transmit them to the display device; a flow rate calculation module, which is used to use a monitoring host in the monitoring device to perform flow rate calculation on the output voltage, obtain the flow rate of the drainage fluid and transmit it to the display device; a dynamic monitoring module, which is used to use a display device to visualize the flow rate and flow rate of the drainage fluid, and to make early warning judgments in combination with the liquid level height, flow rate and flow rate of the drainage fluid, so as to realize visual dynamic monitoring of the flow rate and flow rate of the drainage fluid.

[0074] This embodiment also provides a computer device, which is suitable for the case of a method for visually monitoring the flow rate and flow rate of drainage fluid after surgery of a patient, including: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute computer-executable instructions to implement the method for visually monitoring the flow rate and flow rate of drainage fluid after surgery of a patient as proposed in the above embodiment.

[0075] The computer device may be a terminal, and the computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a key, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0076] This embodiment also provides a storage medium on which a computer program is stored. When the program is executed by a processor, it implements the method for realizing the dynamic visualization monitoring of the flow rate and flow rate of drainage fluid after surgery of a patient as proposed in the above embodiment; the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, referred to as EPROM), programmable read-only memory (Programmable Red-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0077] In summary, the present invention improves the liquid level sensor by installing a different small resistor on each layer of monitoring electrodes, so that each layer of the electrode panel corresponds to a different amount of drainage fluid. When the liquid surface of the drainage fluid contacts each layer of monitoring electrodes, the circuit generates different electrical signals, and then obtains the corresponding drainage fluid flow rate according to the different sizes of the electrical signals, thereby improving the accuracy and uniqueness of the drainage fluid flow rate; through the stepped electrode design of the liquid level sensor and the Hall effect principle of the flow rate sensor, accurate measurement of the drainage fluid level and flow rate is achieved; by simultaneously monitoring the liquid level and flow rate, the accuracy of the data can be cross-verified, the reliability of the system and the accuracy and comprehensiveness of data acquisition are improved, and the monitoring of the drainage fluid status is made more accurate; through the intuitive graphical interface, medical staff can monitor the patient's drainage status at any time, thereby improving the utilization efficiency of medical resources.

[0078] Example 2

[0079] Reference Figure 5 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that, in order to verify its beneficial effects, operating data of the present invention in an actual environment is provided.

[0080] This example selects and analyzes the 24-hour flow data of patients in a ward of a tertiary hospital. The flow warning line of the drainage fluid is set to 310 mL. The flow change of the drainage fluid is as follows: Figure 5 As shown in the figure, it can be seen that with the change of time, the flow rate of the drainage fluid gradually increases from 0 at 7 o'clock on the first day, until the flow rate of the drainage fluid is less than the flow warning line at 21 o'clock, and the computer monitor continues to perform visual dynamic monitoring of the drainage fluid flow rate, and the clamp remains unchanged. After 21 o'clock, the flow rate of the drainage fluid is greater than or equal to the flow warning line, and the computer monitor alarms, prompting medical staff to pay attention to the changes in the drainage fluid in time; at the same time, the drainage fluid flow rate in the two time periods from 11 o'clock to 19 o'clock and from 19 o'clock to 21 o'clock remains unchanged, indicating that the patient's drainage fluid has no fluctuations in this time period.

[0081] Therefore, by detecting the changing trend of the drainage fluid flow rate of the patient within 24 hours, it is shown that the present invention achieves accurate measurement of the drainage fluid level and flow rate, so that medical staff can monitor the patient's drainage status at any time and improve the utilization efficiency of medical resources.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for visualizing dynamic monitoring of drainage fluid velocity and flow rate of patients after surgery, characterized in that: include: Arrange a drainage device, a monitoring device and a display device, use a liquid level sensor in the monitoring device to obtain an electrical signal from the drainage device, and use a flow rate sensor in the monitoring device to obtain an output voltage from the drainage device; Utilizing the monitoring host in the monitoring device to calculate the flow rate of the electrical signal, obtain the flow rate of the drainage fluid and transmit it to the display device; Calculating the flow rate of the output voltage using the monitoring host to obtain the flow rate of the drainage fluid and transmit it to a display device; Based on the display device, the flow rate and flow velocity of the drainage fluid are visualized and early-warning judged, so as to realize the visualized dynamic monitoring of the flow velocity and flow rate of the drainage fluid.

2. The method for visualizing dynamic monitoring of drainage fluid velocity and flow rate of a patient after surgery according to claim 1, characterized in that: The drainage device comprises a drainage bottle, a drainage tube and a drainage valve; The monitoring device includes a signal transmission module, a monitoring host, a lead wire, a flow rate sensor, a liquid level sensor, a sub-connector, a female connector, a small resistor, a monitoring electrode, a grounding electrode and a clamp; The display device is a computer monitor; The liquid level sensor is completely placed inside the entire drainage bottle, close to the front wall of the drainage bottle, the ground electrode above the liquid level sensor is located at the right edge of the electrode panel, extending upward to the female connector and downward to the lowest end of the drainage bottle, and there is a monitoring electrode on the left side of the electrode panel for sensing the change of the liquid level. The monitoring electrodes are distributed in a stepped manner on the left side of the electrode panel, and each monitoring electrode has a small resistor of different sizes; The monitoring electrode and the grounding electrode are gathered together at a female connector, the female connector is connected to the sub-connector of the monitoring host in a spiral manner, and the monitoring host is simultaneously connected to a flow rate sensor located on the drainage tube through a lead wire; The monitoring host comprises a power supply, a converter, a current output module I, a voltage amplification module, a voltage output module II, a central calculation module and an analog signal output module.

3. The method for visualizing dynamic monitoring of drainage fluid velocity and flow rate of a patient after surgery according to claim 2, characterized in that: Using the liquid level sensor in the monitoring device to obtain an electrical signal includes: The liquid level sensor is used to monitor the liquid level in the drainage bottle. If the liquid level in the drainage bottle changes, the height of the liquid level is determined. If the height of the liquid level reaches the monitoring electrode, the ground electrode and the power supply on the monitoring host are used to achieve circuit connection, generate an electrical signal and transmit it to the monitoring host; If the height of the liquid level does not reach the monitoring electrode, the circuit between the power supply on the ground electrode and the power supply on the monitoring host is disconnected, and no electrical signal is generated; If the liquid level in the drainage bottle does not change, continue to monitor the liquid level in the drainage bottle; Using the flow rate sensor in the monitoring device to obtain the output voltage includes the following steps: Connecting the two ends of the flow rate sensor to a power source, current starts to flow, causing charge carriers to follow a linear path from one end of the plate to the other end, and the movement of the charge carriers causes the generation of a magnetic field; When the magnetic field is generated, a DC voltage is applied, and the current direction of the DC voltage is orthogonal to the direction of the magnetic field; When the drainage fluid passes through the turbine switch housing of the flow rate sensor and drives the magnetic rotor to rotate, a rotating magnetic field with different magnetic poles is generated, cutting the magnetic induction lines, generating a pulse level, and then obtaining an output voltage and transmitting it to the monitoring host.

4. The method for visualizing dynamic monitoring of drainage fluid velocity and flow rate of a patient after surgery according to claim 3, characterized in that: Calculating the electrical signal comprises the following steps: Using the converter on the monitoring host to convert the received electrical signal, and using the current output module I to transmit the converted current to the central computing module; The central calculation module is used to calculate the current and the rated voltage to obtain the corresponding resistance and compare it with the small resistance of the monitoring electrode to obtain the liquid level corresponding to the current; Calculating the flow rate of the drainage fluid by combining the liquid level height and the cross-sectional area of ​​the drainage bottle, and transmitting the liquid level height and the flow rate of the drainage fluid to the analog signal output module; Based on the analog signal output module, the liquid level and the flow rate of the drainage fluid are transmitted to the display device using GPRS technology.

5. The method for visualizing dynamic monitoring of flow rate and flow rate of drainage fluid after surgery of a patient as claimed in claim 4, characterized in that: Calculating the flow rate of the output voltage includes the following steps: Amplify the received output voltage by using the voltage amplification module on the monitoring host, and transmit the amplified output voltage to the voltage output module II; The voltage output module II is used to transmit the amplified output voltage to the central computing module; The amplified output voltage is calculated by the central calculation module to obtain the corresponding flow rate of the drainage fluid and transmit it to the analog signal output module; Based on the analog signal output module, the flow rate of the drainage fluid is transmitted to the display device using GPRS technology.

6. The method for visualizing dynamic monitoring of drainage fluid velocity and flow rate of a patient after surgery according to claim 5, characterized in that: The computer display on the display device includes a flow monitoring area and a flow rate monitoring area; Visualizing the flow rate of the drainage fluid and the flow rate of the drainage fluid includes: In the flow monitoring area, a liquid volume square wave and a total liquid volume display area are drawn based on the flow of the drainage fluid; In the flow rate monitoring area, a flow rate variation wave is drawn based on the flow rate of the drainage fluid, and a flow rate warning line is drawn according to a set flow rate alarm threshold.

7. The method for visualizing dynamic monitoring of drainage fluid velocity and flow rate of a patient after surgery according to claim 6, characterized in that: The early warning judgment of the flow rate and the flow velocity of the drainage fluid includes: The height of the liquid level is judged. If the height of the liquid level is greater than or equal to the first threshold, it is determined that the drainage fluid in the drainage bottle is sufficient, and the computer display gives an alarm and sends a signal to control the clamp to close the drainage tube; If the liquid level is less than the first threshold, it is determined that the drainage fluid in the drainage bottle is insufficient, the computer display continues to perform visual dynamic monitoring of the drainage fluid flow rate, and the clamp remains unchanged; The flow velocity change wave is judged. If the flow velocity change wave is greater than or equal to the flow velocity warning line, it is determined that the flow velocity of the drainage fluid exceeds the flow velocity alarm threshold. The computer display gives an alarm to prompt medical personnel to pay attention to the change of the drainage fluid in a timely manner. If the flow rate change wave is less than the flow rate warning line, it is determined that the flow rate of the drainage fluid is within the normal range, and the computer display continues to perform visual dynamic monitoring of the flow rate of the drainage fluid.

8. A system for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery of a patient, based on a method for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery of a patient according to any one of claims 1 to 7, characterized in that: include, A data acquisition module is used to arrange the drainage device, the monitoring device and the display device, obtain an electrical signal from the drainage device using a liquid level sensor in the monitoring device, and obtain an output voltage from the drainage device using a flow rate sensor in the monitoring device; A flow calculation module is used to calculate the flow of the electrical signal using the monitoring host in the monitoring device, obtain resistance data and compare it with the monitoring electrodes in the monitoring device, obtain the liquid level height and flow rate of the drainage fluid and transmit them to the display device; A flow rate calculation module, used to calculate the flow rate of the output voltage using the monitoring host in the monitoring device, obtain the flow rate of the drainage fluid and transmit it to the display device; The dynamic monitoring module is used to visualize the flow rate and flow velocity of the drainage fluid using a display device, and to make early warning judgments based on the liquid level, flow rate and flow velocity of the drainage fluid, thereby realizing visual dynamic monitoring of the drainage fluid flow velocity and flow rate.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery of a patient as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for visualizing and dynamically monitoring the flow rate and flow rate of drainage fluid after surgery of a patient as described in any one of claims 1 to 7 are implemented.

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