Anesthetic gas concentration measuring system and method

Abstract

The invention relates to the technical field of anesthetic gas, and discloses an anesthetic gas concentration measuring system and method. A data processing module; a volatilization module; an adjusting module; an input module; the exhaling monitoring module is used for determining the anesthetic gas inhalation amount of the patient according to the adjusted anesthetic gas concentration and the exhaled anesthetic gas concentration; if the inhalation amount of the anesthetic gas is smaller than the estimated anesthetic gas concentration of the patient, the oxygen concentration in the volatilization module is increased, and the conveying rate of the adjusted anesthetic gas is increased; if the anesthetic gas inhalation amount is larger than the estimated anesthetic gas concentration of the patient, the air concentration in the volatilization module is increased, and the conveying rate of the adjusted anesthetic gas is reduced; the anesthetic gas concentration suitable for a patient is calculated according to an individual, the anesthetic gas concentration before adjustment and the estimated anesthetic gas concentration are compared, dynamic adjustment is carried out according to the muscle relaxation degree and the gas change rate, related equipment is replaced in time when abnormal conditions occur, and normal operation of the system and safety of the patient are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of anesthetic gases, and in particular to an anesthetic gas concentration measurement system and method. Background Art

[0002] Anesthetic gas concentration refers to the concentration of anesthetic gas used during anesthesia. Anesthetic gases are used to induce and maintain a painless state in patients so that they do not feel pain during surgery or other painful medical procedures. The concentration of anesthetic gas is usually expressed as a percentage. The specific anesthetic gas and its concentration will be determined according to the patient's condition and needs. Common anesthetic gases include sevoflurane, isoflurane, nitrous oxide, etc. Anesthesiologists will use various monitoring equipment to assess the patient's physiological condition, including ventilators, multi-parameter monitors, etc.

[0003] Common gas concentration meters include electrochemical sensors, infrared sensors, and semiconductor sensors. These sensors measure gas concentrations based on the principle of specific reactions between gases and gases, and display the results on the instrument. Gas analyzer: A gas analyzer is a professional instrument used to measure the concentrations of different components in a gas. These instruments usually include a sampling system and an analysis module. The sampling system is used to collect gas samples and introduce them into the analysis module for measurement. Common gas analyzers include mass spectrometers, gas chromatographs, laser absorption spectrometers, etc. Sensor network: A sensor network is a system that uses multiple sensors distributed in a specific area or device to monitor gas concentrations in real time. These sensors can be connected to a data processing unit via wireless communication to transmit the measurement results to a central control system for analysis and processing. Sensor networks can be used for applications such as gas monitoring in industrial environments and indoor air quality monitoring.

[0004] Electrochemical sensor array: An electrochemical sensor array is a system that uses multiple electrochemical sensors to measure gas concentrations simultaneously. Each sensor corresponds to a specific gas, and the concentration of different gases is determined by measuring the electrical signals output by the sensor array. This method can improve the accuracy and reliability of the measurement.

[0005] There are two extremes in the existing anesthetic gas concentration measurement process. One is that it is relatively close to the outlet. Due to its proximity to the outlet position, this solution has the disadvantage of being easily affected by exhaled water vapor. Its advantage is that the measured gas composition data is more timely and accurate. The other is that it is far away from the outlet position. Although this method can reduce the influence of water vapor, airway transmission takes time and the timeliness of the detected data is poor. Therefore, it does not meet the existing needs. In this regard, we propose an anesthetic gas concentration measurement system and method. Summary of the invention

[0006] The present invention provides an anesthetic gas concentration measurement system and method, which can calculate the anesthetic gas concentration suitable for the patient based on the individual, compare the anesthetic gas concentration before adjustment with the estimated anesthetic gas concentration, and dynamically adjust according to the degree of muscle relaxation and the gas change rate. When an abnormal situation occurs, relevant equipment is replaced in time to ensure the normal operation of the system and the safety of the patient. The system solves the problem of sampling error and contamination that most of the existing anesthetic gas concentration measurement systems mentioned in the above background technology are prone to occur during the measurement process.

[0007] The present invention provides the following technical solution: an anesthetic gas concentration measurement system, comprising: Data acquisition module: collects the concentration and flow data of volatile mist of anesthetic solution, oxygen and air; Data processing module: matching the concentration and flow of oxygen and air according to the concentration and flow data of the volatilized mist of the collected anesthetic solution; Volatilization module: used to mix anesthetic liquid volatilization mist, oxygen and air to form anesthetic gas before adjustment; Adjustment module: detects the concentration of anesthetic liquid in the anesthetic gas, and makes adaptive adjustments according to the preset value to form adjusted anesthetic gas; Input module: used to inject adjusted anesthetic gas into the patient; Exhalation monitoring module: used to monitor the concentration of exhaled anesthetic gas after the patient exhales, and determine the patient's anesthetic gas inhalation amount according to the adjusted anesthetic gas concentration and the exhaled anesthetic gas concentration; If the amount of anesthetic gas inhaled is less than the patient's estimated anesthetic gas concentration, the oxygen concentration in the volatilization module is increased, and the delivery rate of the adjusted anesthetic gas is increased; If the amount of anesthetic gas inhaled is greater than the patient's estimated anesthetic gas concentration, the air concentration in the volatilization module is increased and the delivery rate of the adjusted anesthetic gas is reduced.

[0008] As an optional solution of the anesthetic gas concentration measurement system of the present invention, the exhalation monitoring module specifically includes: A condensation module for cooling the exhaled anesthetic gas; The condensation module specifically includes: a water cooling pipe, an air intake pipe and a liquid accumulation unit; A water-cooling pipe, wherein there are several water-cooling plates at a certain distance from each other, a condensation channel for circulating condensate is provided inside the water-cooling plate, and several water-cooling plates are interconnected through the condensation channel, and one end of the water-cooling plate close to the heating module is inclined; The water cooling pipeline is provided with a water cooling inlet and a water cooling outlet, a circulation pipeline is passed through the water cooling inlet and the water cooling outlet, and both ends of the circulation pipeline are connected with the condensation channel, a circulation pump and a refrigerator are installed on the circulation pipeline, which are used to transport the condensate in the refrigeration circulation pipeline, one end of the water cooling pipeline is connected with the air intake pipe, and the other end of the water cooling pipeline is connected with the heating module; The air intake pipe is provided with an air flow detector inside. If air flow data is detected inside the air intake pipe, the circulation pump is started to exchange the condensate in the condensation channel. If no air flow data is detected, the flow exchange of the condensate is stopped. A fluid collection unit is used to collect the liquid produced when the exhaled anesthetic gas condenses; The liquid accumulation unit specifically comprises: a liquid accumulation pipe connected to the bottom end of the water cooling pipe, a liquid sealing component inside the liquid accumulation pipe, and the other end of the liquid accumulation pipe is connected to the liquid storage tank; Liquid sealing assembly, used to prevent gas leakage; Specifically, a V-shaped groove is arranged inside the liquid accumulation pipe, a round blocking ball is arranged at the upper end of the V-shaped groove, and a floating ball is connected to the top of the round blocking ball.

[0009] As an optional solution of the anesthetic gas concentration measurement system of the present invention, wherein: a heating module is used to heat the exhaled anesthetic gas passing through the condensation module; A hose and a heating tube sleeved outside the hose are arranged inside the heating module, one end of the hose is connected to the condensation module, and the other end of the hose is connected to the infrared detection module; The heating tube specifically comprises: an inner tube and an outer tube sleeved outside the inner tube, and a spiral heating wire is arranged between the inner tube and the outer tube; The infrared detection module includes two identical infrared detection units, the two infrared detection units are connected in parallel with each other, one end of the infrared detection module is connected to a steering valve, and the other end of the steering valve is connected to the heating module; Infrared detection unit, wherein an infrared light source is provided at the upper end of the anesthesia circuit pipeline, and a light source processor is correspondingly provided at the lower end of the infrared light source module; The light source processor specifically includes: a shading wheel, a filter and a photoelectric transducer. A light-transmitting hole is provided at the upper end of the shading wheel, a filter is provided at the lower end of the shading wheel, and a photoelectric transducer is provided at the lower end of the filter.

[0010] As an optional solution of the method for measuring the concentration of anesthetic gas according to the present invention, wherein: S10, obtain the patient's basic information and surgical information; S11. Calculate the volatilization mist of the anesthetic solution and estimate the concentration of anesthetic gas based on the basic information and surgical information of the patient; S12, obtaining the anesthetic gas before adjustment of the volatilization mist of the anesthetic liquid in the volatilization module, and comparing the anesthetic gas before adjustment with the estimated anesthetic gas concentration; S13, forming an adjustment strategy according to the comparison result of the anesthetic gas concentration before adjustment and the estimated anesthetic gas concentration; S14, obtaining the adjusted anesthetic gas, and delivering the adjusted anesthetic gas to the patient through the anesthesia circuit pipeline; S15. Monitor the concentration of the exhaled anesthetic gas exhaled by the patient, and determine the patient's inhaled anesthetic gas amount according to the adjusted anesthetic gas concentration and the exhaled anesthetic gas concentration.

[0011] As an optional solution of the method for measuring the concentration of anesthetic gas according to the present invention, wherein: S10, obtaining basic information and surgical information of the patient, wherein the basic information of the patient specifically includes: age, weight and physiological parameters of the patient; The physiological parameters include: the patient's heart rate, blood pressure, body temperature and blood oxygen saturation; The surgical information includes the type and duration of the current surgery; S11 calculates the volatilization mist of the anesthetic solution and estimates the anesthetic gas concentration, specifically: Based on the basic information and surgical information of the patient, the estimated anesthetic gas concentration required by the patient in the current surgery is calculated, which is recorded as Q; (in the prior art, it is generally calculated based on weight and age: weight is proportional to dose, and fluctuates according to gender, surgical site and comprehensive physical fitness of the patient); According to the estimated anesthetic gas concentration Q, the dose of the volatile mist of the anesthetic solution is calculated and recorded as W; Based on the vapor W emitted by the anesthetic solution, calculate the estimated air volume, recorded as E.

[0012] As an optional solution of the method for measuring the concentration of anesthetic gas according to the present invention, wherein: The step of obtaining the anesthetic liquid volatilization mist before adjusting the anesthetic gas in the volatilization module is specifically as follows: The volatilized mist W of the anesthetic liquid is mixed with the estimated air volume E through the volatilization module, and the mixed anesthetic gas before adjustment is obtained, which is recorded as R1; Compare the estimated anesthetic gas concentration Q with the anesthetic gas R1 before adjustment; If the estimated anesthetic gas concentration Q = the anesthetic gas R1 before adjustment, the anesthetic gas R1 before adjustment is recorded as the anesthetic gas concentration R2 after adjustment; If the estimated anesthetic gas concentration Q> the anesthetic gas before adjustment R1, the first adjustment strategy is performed; The first adjustment strategy is specifically: increasing the anesthetic gas rate inside the volatilization module and increasing the oxygen concentration in the volatilization module until the estimated anesthetic gas concentration Q = the anesthetic gas before adjustment R1; If the estimated anesthetic gas concentration Q is less than the anesthetic gas R1 before adjustment, the second adjustment strategy is performed; The second adjustment strategy is specifically as follows: reduce the anesthetic gas flow rate in the volatilization module and increase the air volume until the estimated anesthetic gas concentration Q = the anesthetic gas R1 before adjustment.

[0013] As an optional solution of the method for measuring the concentration of anesthetic gas according to the present invention, wherein: In S15, the concentration of exhaled anesthetic gas exhaled by the patient is monitored, and the specific steps are: S151, obtaining anesthetic gas exhaled by the patient; S152, the anesthetic gas exhaled by the patient is dehydrated through a condensation module to form a gas with less water content; S153, the gas with less water content is heated by a heating module to form a gas with reduced liquefaction; S154, the reduced liquefied gas is passed through an infrared detection module to detect the gas content, and the result is recorded as detection data; S155. Continuously obtain detection data, and if the detection data changes, execute the detection strategy.

[0014] As an optional method of an anesthetic gas concentration measurement system according to the present invention, wherein: The specific steps in S154 are: S1541, infrared light source emits infrared light; S1542, infrared light is absorbed by the anesthetic gas through the anesthetic circuit pipeline, and the absorbed anesthetic gas reaches the light shielding wheel; S1543, the shading wheel rotates at a constant speed, so that the infrared rays reach the shading sheet in the form of pulses; S1544. The transmitted light filtered by the filter reaches the photoelectric transducer and is converted into a transmittance value of an electrical signal by the photoelectric transducer.

[0015] As an optional solution of the method for measuring the concentration of anesthetic gas according to the present invention, wherein: S155. Continuously obtain test data. If the test data changes, execute the test strategy. The specific test strategy is: Obtain the degree of muscle relaxation of the anesthetized patient, recorded as Y; A first muscle relaxation threshold interval is set, denoted as (K1, K2), which is used to determine the degree of muscle relaxation of an anesthetized patient; A second muscle relaxation threshold interval is set, denoted as (K3, K4), which is used to determine the degree of muscle relaxation of anesthetized patients; Determine the muscle relaxation threshold interval of the muscle relaxation degree Y; If the muscle relaxation degree Y is within the first muscle relaxation threshold interval (K1, K2), the first detection strategy is executed; If the muscle relaxation degree Y is within the second muscle relaxation threshold interval (K3, K4), the second detection strategy is executed.

[0016] As an optional solution of the method for measuring the concentration of anesthetic gas according to the present invention, wherein: Create a line graph of light transmittance versus time to provide feedback on the rate of change of gas; Set the first target gas change rate threshold of the first muscle relaxation threshold interval, denoted as (N1, N2); Set the second target gas change rate threshold value of the second muscle relaxation threshold interval, recorded as (N3, N4); The target gas change rate threshold is used to determine the gas change rate; Get the gas transmittance in the previous minute, recorded as M1; Get the current gas transmittance, recorded as M2; Calculate the current gas change rate, recorded as B, the current gas change rate B = current gas transmittance M2 - gas transmittance M1 of the previous minute; The first detection strategy is specifically: if the current gas change rate B is within the first target gas change rate threshold interval (N1, N2), then continue to measure the anesthetic gas concentration; If the current gas change rate B is not within the first target gas change rate threshold interval (N1, N2), the maintenance strategy is executed; The second detection strategy is specifically: if the current gas change rate B is within the second target gas change rate threshold (N3, N4), then continue to measure the anesthetic gas concentration; If the current gas change rate B is not at the second target gas change rate threshold (N3, N4), the maintenance strategy is executed; The specific maintenance strategy is: start the steering valve, replace another infrared detection unit for detection, and respond to the alarm. The staff disassembles and repairs the abnormal infrared detection unit and closely observes the patient's condition.

[0017] The present invention has the following beneficial effects: 1. The anesthetic gas concentration measurement system and method obtains the patient's basic information and surgical information, calculates the anesthetic gas concentration suitable for the patient according to individual characteristics, and improves the effect and safety of anesthesia; by comparing the anesthetic gas concentration before adjustment and the estimated anesthetic gas concentration, an adjustment strategy is formulated according to the difference, so that the anesthetic gas concentration is closer to the expected target and the risk caused by overdose or underdose is reduced; the infrared detection module in the system can detect the anesthetic gas concentration in real time and provide accurate measurement results; dynamic adjustment is made according to the degree of muscle relaxation and the gas change rate to ensure the accuracy and timeliness of the measurement, and relevant equipment is repaired and replaced in time when abnormal conditions occur to ensure the normal operation of the system and the safety of the patient.

[0018] 2. The anesthetic gas concentration measurement system and method, the condensation module uses a water-cooled plate and a condensation channel to cool the exhaled anesthetic gas, a certain distance is formed inside the water-cooled plate, and the condensation channel is used to circulate condensate to cool the exhaled anesthetic gas; an airflow detector is provided inside the air inlet pipe, and when there is airflow, a circulation pump is started to promote the flow and exchange of condensate so that the exhaled anesthetic gas can be condensed in time; the liquid accumulation unit introduces the condensate into the liquid storage tank through the liquid accumulation pipe, which can effectively collect the condensate to avoid liquid leakage and environmental pollution; the setting of the liquid sealing component improves the sealing of the liquid accumulation pipe, which can prevent the leakage of anesthetic gas and avoid data errors; the exhaled monitoring module can more accurately measure the concentration of anesthetic gas through functions such as condensation, airflow detection and liquid accumulation collection, thereby improving the safety and effect of the anesthesia process.

[0019] 3. The anesthetic gas concentration measurement system and method determine the current anesthetic state of the anesthetized patient by judging the threshold area of ​​the degree of muscle relaxation of the anesthetized patient, thereby matching the target gas change rate threshold corresponding to the anesthetized patient, and then continuously acquiring detection data and based on the target gas change rate threshold corresponding to the anesthetized patient, it can monitor in real time whether the anesthetic gas concentration is abnormal, and promptly initiate the maintenance strategy when an abnormal situation is found to ensure the safety and stability of the anesthesia process; the maintenance strategy can respond quickly when an abnormal situation is detected, and ensure the accuracy and reliability of the anesthetic gas concentration measurement by replacing another infrared detection unit for detection, while closely observing the patient's condition to ensure the patient's safety. The degree of muscle relaxation can be used as an indicator for evaluating the anesthetic state and the depth of anesthesia, so the current anesthetic state of the anesthetized patient can be evaluated according to the threshold area of ​​the degree of muscle relaxation, thereby matching the target gas change rate threshold corresponding to the anesthetized patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the structural block diagram of the anesthetic gas concentration measurement system.

[0021] Figure 2It is a schematic diagram of the structure of the outgoing call monitoring module of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of the condensation module of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the infrared detection unit of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the heating module of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1: This example is intended to help solve the problem of sampling error and contamination that are prone to occur in the measurement process of existing anesthetic gas concentration measurement systems. Figure 1-Figure 5 , an anesthetic gas concentration measurement system and method, comprising: a data acquisition module: collecting concentration and flow data of volatile mist of anesthetic liquid, oxygen and air; Data processing module: matching the concentration and flow of oxygen and air according to the concentration and flow data of the volatilized mist of the collected anesthetic solution; Volatilization module: used to mix anesthetic liquid volatilization mist, oxygen and air to form anesthetic gas before adjustment; Adjustment module: detects the concentration of anesthetic liquid in the anesthetic gas, and makes adaptive adjustments according to the preset value to form adjusted anesthetic gas; Input module: used to inject adjusted anesthetic gas into the patient; Exhalation monitoring module: used to monitor the concentration of exhaled anesthetic gas after the patient exhales, and determine the patient's anesthetic gas inhalation amount according to the adjusted anesthetic gas concentration and the exhaled anesthetic gas concentration; If the amount of anesthetic gas inhaled is less than the patient's estimated anesthetic gas concentration, the oxygen concentration in the volatilization module is increased, and the delivery rate of the adjusted anesthetic gas is increased; If the amount of anesthetic gas inhaled is greater than the patient's estimated anesthetic gas concentration, the air concentration in the volatilization module is increased and the delivery rate of the adjusted anesthetic gas is reduced.

[0027] The outgoing call monitoring module specifically includes: A condensation module for cooling the exhaled anesthetic gas; The condensation module specifically includes: a water cooling pipe, an air intake pipe and a liquid accumulation unit; A water-cooling pipe, wherein there are several water-cooling plates at a certain distance from each other, a condensation channel for circulating condensate is provided inside the water-cooling plate, and several water-cooling plates are interconnected through the condensation channel, and one end of the water-cooling plate close to the heating module is inclined; The water cooling pipeline is provided with a water cooling inlet and a water cooling outlet, a circulation pipeline is passed through the water cooling inlet and the water cooling outlet, and both ends of the circulation pipeline are connected with the condensation channel, a circulation pump and a refrigerator are installed on the circulation pipeline, which are used to transport the condensate in the refrigeration circulation pipeline, one end of the water cooling pipeline is connected with the air intake pipe, and the other end of the water cooling pipeline is connected with the heating module; The air intake pipe is provided with an air flow detector inside. If air flow data is detected inside the air intake pipe, the circulation pump is started to exchange the condensate in the condensation channel. If no air flow data is detected, the flow exchange of the condensate is stopped. A fluid collection unit is used to collect the liquid produced when the exhaled anesthetic gas condenses; The liquid accumulation unit specifically comprises: a liquid accumulation pipe connected to the bottom end of the water cooling pipe, a liquid sealing component inside the liquid accumulation pipe, and the other end of the liquid accumulation pipe is connected to the liquid storage tank; Liquid sealing assembly, used to prevent gas leakage; Specifically, a V-shaped groove is arranged inside the liquid accumulation pipe, a round blocking ball is arranged at the upper end of the V-shaped groove, and a floating ball is connected to the top of the round blocking ball.

[0028] A heating module, used for heating the exhaled anesthetic gas passing through the condensation module; A hose and a heating tube sleeved outside the hose are arranged inside the heating module, one end of the hose is connected to the condensation module, and the other end of the hose is connected to the infrared detection module; The heating tube specifically comprises: an inner tube and an outer tube sleeved outside the inner tube, and a spiral heating wire is arranged between the inner tube and the outer tube; The infrared detection module includes two identical infrared detection units, the two infrared detection units are connected in parallel with each other, one end of the infrared detection module is connected to a steering valve, and the other end of the steering valve is connected to the heating module; Infrared detection unit, wherein an infrared light source is provided at the upper end of the anesthesia circuit pipeline, and a light source processor is correspondingly provided at the lower end of the infrared light source module; The light source processor specifically includes: a shading wheel, a filter and a photoelectric transducer. A light-transmitting hole is provided at the upper end of the shading wheel, a filter is provided at the lower end of the shading wheel, and a photoelectric transducer is provided at the lower end of the filter.

[0029] In this embodiment: by obtaining the patient's basic information and surgical information, the anesthetic gas concentration suitable for the patient is calculated according to individual characteristics to improve the effect and safety of anesthesia; by comparing the anesthetic gas concentration before adjustment and the estimated anesthetic gas concentration, an adjustment strategy is formulated according to the difference to make the anesthetic gas concentration closer to the expected target and reduce the risk caused by overdose or underdose; the infrared detection module in the system can detect the anesthetic gas concentration in real time and provide accurate measurement results; dynamic adjustment is made according to the degree of muscle relaxation and the gas change rate to ensure the accuracy and timeliness of the measurement, and relevant equipment is repaired and replaced in time when abnormal conditions occur to ensure the normal operation of the system and the safety of the patients.

[0030] Example 2: This example is intended to promote the solution of the problem of individualized anesthesia regulation. This example is an improvement made on the basis of Example 1. For details, please refer to Figure 1-Figure 5 , S10, obtaining the patient's basic information and surgical information; S11. Calculate the volatilization mist of the anesthetic solution and estimate the concentration of anesthetic gas based on the basic information and surgical information of the patient; S12, obtaining the anesthetic gas before adjustment of the volatilization mist of the anesthetic liquid in the volatilization module, and comparing the anesthetic gas before adjustment with the estimated anesthetic gas concentration; S13, forming an adjustment strategy according to the comparison result of the anesthetic gas concentration before adjustment and the estimated anesthetic gas concentration; S14, obtaining the adjusted anesthetic gas, and delivering the adjusted anesthetic gas to the patient through the anesthesia circuit pipeline; S15. Monitor the concentration of the exhaled anesthetic gas exhaled by the patient, and determine the patient's inhaled anesthetic gas amount based on the adjusted anesthetic gas concentration and the exhaled anesthetic gas concentration.

[0031] S10, obtaining the patient's basic information and surgical information, the patient's basic information specifically including: the patient's age, weight, and physiological parameters; Physiological parameters include: the patient’s heart rate, blood pressure, body temperature, and blood oxygen saturation; Surgical information included the type and duration of the current surgery; S11 calculates the volatilization mist of the anesthetic solution and estimates the anesthetic gas concentration, specifically: Based on the basic information and surgical information of the patient, the estimated anesthetic gas concentration required by the patient in the current surgery is calculated, which is recorded as Q; (in the prior art, it is generally calculated based on weight and age: weight is proportional to dose, and fluctuates according to gender, surgical site and comprehensive physical fitness of the patient); According to the estimated anesthetic gas concentration Q, the dose of the volatile mist of the anesthetic solution is calculated and recorded as W; Based on the vapor W emitted by the anesthetic solution, calculate the estimated air volume, recorded as E.

[0032] Obtain the anesthetic gas before adjustment of the anesthetic liquid volatilization mist in the volatilization module, specifically: The volatilized mist W of the anesthetic liquid is mixed with the estimated air volume E through the volatilization module, and the mixed anesthetic gas before adjustment is obtained, which is recorded as R1; Compare the estimated anesthetic gas concentration Q with the anesthetic gas R1 before adjustment; If the estimated anesthetic gas concentration Q = the anesthetic gas R1 before adjustment, the anesthetic gas R1 before adjustment is recorded as the anesthetic gas concentration R2 after adjustment; If the estimated anesthetic gas concentration Q> the anesthetic gas before adjustment R1, the first adjustment strategy is performed; The first adjustment strategy is specifically: increasing the anesthetic gas rate inside the volatilization module and increasing the oxygen concentration in the volatilization module until the estimated anesthetic gas concentration Q = the anesthetic gas before adjustment R1; If the estimated anesthetic gas concentration Q is less than the anesthetic gas R1 before adjustment, the second adjustment strategy is performed; The second adjustment strategy is specifically as follows: reduce the anesthetic gas flow rate in the volatilization module and increase the air volume until the estimated anesthetic gas concentration Q = the anesthetic gas R1 before adjustment.

[0033] In this embodiment: the condensation module uses a water-cooled plate and a condensation channel to cool the exhaled anesthetic gas, a certain distance is formed inside the water-cooled plate, and the condensation channel is used to circulate condensate to cool the exhaled anesthetic gas; an airflow detector is provided inside the air inlet pipe, and when there is airflow, a circulation pump will be started to promote the flow and exchange of condensate; the liquid accumulation unit introduces the condensate into the liquid storage tank through the liquid accumulation pipe, which can effectively collect the condensate to avoid liquid leakage and environmental pollution; the setting of the liquid sealing component improves the sealing of the liquid accumulation pipe, which can prevent the leakage of anesthetic gas; the exhaled monitoring module can more accurately measure the concentration of anesthetic gas through functions such as condensation, airflow detection and liquid accumulation collection, thereby improving the safety and effectiveness of the anesthesia process.

[0034] Example 3: This example is intended to help solve abnormal problems during measurement. This example is an improvement made on the basis of Example 1. For details, please refer to Figure 1-Figure 5 In S15, the concentration of the exhaled anesthetic gas exhaled by the patient is monitored, and the specific steps are: S151, obtaining anesthetic gas exhaled by the patient; S152, the anesthetic gas exhaled by the patient is dehydrated through a condensation module to form a gas with less water content; S153, the gas with less water content is heated by a heating module to form a gas with reduced liquefaction; S154, the reduced liquefied gas is passed through an infrared detection module to detect the gas content, and the result is recorded as detection data; S155. Continuously obtain detection data, and if the detection data changes, execute the detection strategy.

[0035] The specific steps in S154 are: S1541, infrared light source emits infrared light; S1542, infrared light is absorbed by the anesthetic gas through the anesthetic circuit pipeline, and the absorbed anesthetic gas reaches the light shielding wheel; S1543, the shading wheel rotates at a constant speed, so that the infrared rays reach the shading sheet in the form of pulses; S1544. The transmitted light filtered by the filter reaches the photoelectric transducer and is converted into a transmittance value of an electrical signal by the photoelectric transducer.

[0036] S155. Continuously obtain test data. If the test data changes, execute the test strategy. The specific test strategy is: Obtain the degree of muscle relaxation of the anesthetized patient, recorded as Y; A first muscle relaxation threshold interval is set, denoted as (K1, K2), which is used to determine the degree of muscle relaxation of an anesthetized patient; A second muscle relaxation threshold interval is set, denoted as (K3, K4), which is used to determine the degree of muscle relaxation of anesthetized patients; Determine the muscle relaxation threshold interval of the muscle relaxation degree Y; If the muscle relaxation degree Y is within the first muscle relaxation threshold interval (K1, K2), the first detection strategy is executed; If the muscle relaxation degree Y is within the second muscle relaxation threshold interval (K3, K4), the second detection strategy is executed.

[0037] Create a line graph of light transmittance versus time to provide feedback on the rate of change of gas; Set the first target gas change rate threshold of the first muscle relaxation threshold interval, denoted as (N1, N2); Set the second target gas change rate threshold value of the second muscle relaxation threshold interval, recorded as (N3, N4); The target gas change rate threshold is used to determine the gas change rate; Get the gas transmittance in the previous minute, recorded as M1; Get the current gas transmittance, recorded as M2; Calculate the current gas change rate, recorded as B, the current gas change rate B = current gas transmittance M2 - gas transmittance M1 of the previous minute; The first detection strategy is specifically: if the current gas change rate B is within the first target gas change rate threshold interval (N1, N2), then continue to measure the anesthetic gas concentration; If the current gas change rate B is not within the first target gas change rate threshold interval (N1, N2), the maintenance strategy is executed; The second detection strategy is specifically: if the current gas change rate B is within the second target gas change rate threshold (N3, N4), then continue to measure the anesthetic gas concentration; If the current gas change rate B is not at the second target gas change rate threshold (N3, N4), the maintenance strategy is executed; The specific maintenance strategy is: start the steering valve, replace another infrared detection unit for detection, and respond to the alarm. The staff disassembles and repairs the abnormal infrared detection unit and closely observes the patient's condition.

[0038] In this embodiment: by determining the threshold area of ​​the degree of muscle relaxation of the anesthetized patient, the current anesthetic state of the anesthetized patient is determined, thereby matching the target gas change rate threshold corresponding to the anesthetized patient, and then continuously acquiring detection data and based on the target gas change rate threshold corresponding to the anesthetized patient, it is possible to monitor in real time whether the anesthetic gas concentration is abnormal, and promptly initiate a maintenance strategy when an abnormal situation is found, thereby ensuring the safety and stability of the anesthesia process; the maintenance strategy can respond quickly when an abnormal situation is detected, by replacing another infrared detection unit for detection, thereby ensuring the accuracy and reliability of the anesthetic gas concentration measurement, while closely observing the patient's condition to ensure the patient's safety.

[0039] The electronic device in the embodiments of the present disclosure may include, but is not limited to, mobile terminals such as laptop computers, PADs (tablet computers), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), and the like, as well as fixed terminals.

[0040] An electronic device may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.), which may perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage device into a random access memory (RAM). In the RAM, various programs and data required for the operation of the electronic device are also stored. The processing device, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0041] Typically, the following devices may be connected to the I / O interface: input devices including, for example, a touch screen, a touch pad, an image sensor, a microphone, etc.; output devices including, for example, a liquid crystal display (LCD), a speaker, etc.; storage devices including, for example, a magnetic tape, a hard disk, etc.; and communication devices. The communication devices may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data.

[0042] The embodiment of the present disclosure also provides a non-transitory computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable the computer to execute the high-precision map-based driving assistance identification method in the aforementioned method embodiment.

[0043] It should be noted that more specific examples of computer-readable storage media may include portable computer disks, hard disks, erasable programmable read-only memories (EPROMs or flash memories), optical storage devices, magnetic storage devices, or any suitable combination thereof. In the present disclosure, computer-readable storage media may be any tangible medium that contains or stores a program, which may be used by or in combination with an instruction execution system, apparatus, or device, and the computer-readable medium may be contained in the electronic device; or it may exist independently without being assembled into the electronic device.

[0044] The computer-readable medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device can implement the solution provided by the method embodiment.

[0045] Computer program code for performing operations of the present disclosure may be written in one or more programming languages ​​or a combination thereof, and may be executed entirely on a user's computer, partially on a user's computer, as a separate software package, partially on a user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An anesthetic gas concentration measurement system, characterized in that: include: Data acquisition module: collects the concentration and flow data of volatile mist of anesthetic solution, oxygen and air; Data processing module: matching the concentration and flow of oxygen and air according to the concentration and flow data of the volatilized mist of the collected anesthetic solution; Volatilization module: used to mix anesthetic liquid volatilization mist, oxygen and air to form anesthetic gas before adjustment; Adjustment module: detects the concentration of anesthetic liquid in the anesthetic gas, and makes adaptive adjustments according to the preset value to form adjusted anesthetic gas; Input module: used to inject adjusted anesthetic gas into the patient; Exhalation monitoring module: used to monitor the concentration of exhaled anesthetic gas after the patient exhales, and determine the patient's anesthetic gas inhalation amount according to the adjusted anesthetic gas concentration and the exhaled anesthetic gas concentration; If the amount of anesthetic gas inhaled is less than the patient's estimated anesthetic gas concentration, the oxygen concentration in the volatilization module is increased, and the delivery rate of the adjusted anesthetic gas is increased; If the amount of anesthetic gas inhaled is greater than the patient's estimated anesthetic gas concentration, the air concentration in the volatilization module is increased and the delivery rate of the adjusted anesthetic gas is reduced.

2. An anesthetic gas concentration measurement system according to claim 1, characterized in that: The outgoing call monitoring module specifically includes: A condensation module for cooling the exhaled anesthetic gas; The condensation module specifically includes: a water cooling pipe, an air intake pipe and a liquid accumulation unit; A water-cooling pipe, wherein there are several water-cooling plates at a certain distance from each other, a condensation channel for circulating condensate is provided inside the water-cooling plate, and several water-cooling plates are interconnected through the condensation channel, and one end of the water-cooling plate close to the heating module is inclined; The water cooling pipeline is provided with a water cooling inlet and a water cooling outlet, a circulation pipeline is passed through the water cooling inlet and the water cooling outlet, and both ends of the circulation pipeline are connected with the condensation channel, a circulation pump and a refrigerator are installed on the circulation pipeline, which are used to transport the condensate in the refrigeration circulation pipeline, one end of the water cooling pipeline is connected with the air intake pipe, and the other end of the water cooling pipeline is connected with the heating module; The air intake pipe is provided with an air flow detector inside. If air flow data is detected inside the air intake pipe, the circulation pump is started to exchange the condensate in the condensation channel. If no air flow data is detected, the flow exchange of the condensate is stopped. A fluid collection unit is used to collect the liquid produced when the exhaled anesthetic gas condenses; The liquid accumulation unit specifically comprises: a liquid accumulation pipe connected to the bottom end of the water cooling pipe, a liquid sealing component inside the liquid accumulation pipe, and the other end of the liquid accumulation pipe is connected to the liquid storage tank; Liquid sealing assembly, used to prevent gas leakage; Specifically, a V-shaped groove is arranged inside the liquid accumulation pipe, a round blocking ball is arranged at the upper end of the V-shaped groove, and a floating ball is connected to the top of the round blocking ball.

3. An anesthetic gas concentration measurement system according to claim 2, characterized in that: A heating module, used for heating the exhaled anesthetic gas passing through the condensation module; A hose and a heating tube sleeved outside the hose are arranged inside the heating module, one end of the hose is connected to the condensation module, and the other end of the hose is connected to the infrared detection module; The heating tube specifically comprises: an inner tube and an outer tube sleeved outside the inner tube, and a spiral heating wire is arranged between the inner tube and the outer tube; The infrared detection module includes two identical infrared detection units, the two infrared detection units are connected in parallel with each other, one end of the infrared detection module is connected to a steering valve, and the other end of the steering valve is connected to the heating module; Infrared detection unit, wherein an infrared light source is provided at the upper end of the anesthesia circuit pipeline, and a light source processor is correspondingly provided at the lower end of the infrared light source module; The light source processor specifically includes: a shading wheel, a filter and a photoelectric transducer. A light-transmitting hole is provided at the upper end of the shading wheel, a filter is provided at the lower end of the shading wheel, and a photoelectric transducer is provided at the lower end of the filter.

4. A method using the anesthetic gas concentration measurement system of claim 3, characterized in that: S10, obtaining the patient's basic information and surgical information; S11. Calculate the volatilization mist of the anesthetic solution and estimate the concentration of anesthetic gas based on the basic information and surgical information of the patient; S12, obtaining the anesthetic gas before adjustment of the anesthetic liquid volatilization mist in the volatilization module, and comparing the anesthetic gas before adjustment with the estimated anesthetic gas concentration; S13, forming an adjustment strategy according to the comparison result of the anesthetic gas concentration before adjustment and the estimated anesthetic gas concentration; S14, obtaining the adjusted anesthetic gas, and delivering the adjusted anesthetic gas to the patient through the anesthesia circuit pipeline; S15. Monitor the concentration of the exhaled anesthetic gas exhaled by the patient, and determine the patient's inhaled anesthetic gas amount according to the adjusted anesthetic gas concentration and the exhaled anesthetic gas concentration.

5. The method of the anesthetic gas concentration measurement system according to claim 4, characterized in that: S10, obtaining basic information and surgical information of the patient, wherein the basic information of the patient specifically includes: age, weight and physiological parameters of the patient; The physiological parameters include: the patient's heart rate, blood pressure, body temperature and blood oxygen saturation; The surgical information includes the type and duration of the current surgery; S11 calculates the volatilization mist of the anesthetic solution and estimates the anesthetic gas concentration, specifically: According to the basic information and operation information of the patient, the estimated anesthetic gas concentration required by the patient in the current operation is calculated, which is recorded as Q; According to the estimated anesthetic gas concentration Q, the dose of the volatile mist of the anesthetic solution is calculated and recorded as W; Based on the vapor W emitted by the anesthetic solution, the estimated air volume is calculated and recorded as E.

6. The method of the anesthetic gas concentration measurement system according to claim 5, characterized in that: The step of obtaining the anesthetic liquid volatilization mist before adjusting the anesthetic gas in the volatilization module is specifically as follows: The volatilized mist W of the anesthetic liquid is mixed with the estimated air volume E through the volatilization module, and the mixed anesthetic gas before adjustment is obtained, which is recorded as R1; Compare the estimated anesthetic gas concentration Q with the anesthetic gas R1 before adjustment; If the estimated anesthetic gas concentration Q = the anesthetic gas R1 before adjustment, the anesthetic gas R1 before adjustment is recorded as the anesthetic gas concentration R2 after adjustment; If the estimated anesthetic gas concentration Q> the anesthetic gas before adjustment R1, the first adjustment strategy is performed; The first adjustment strategy is specifically: increasing the anesthetic gas rate inside the volatilization module and increasing the oxygen concentration in the volatilization module until the estimated anesthetic gas concentration Q = the anesthetic gas before adjustment R1; If the estimated anesthetic gas concentration Q is less than the anesthetic gas R1 before adjustment, the second adjustment strategy is performed; The second adjustment strategy is specifically as follows: reduce the anesthetic gas flow rate in the volatilization module and increase the air volume until the estimated anesthetic gas concentration Q = the anesthetic gas R1 before adjustment.

7. The method of the anesthetic gas concentration measurement system according to claim 6, characterized in that: In S15, the concentration of exhaled anesthetic gas exhaled by the patient is monitored, and the specific steps are: S151, obtaining anesthetic gas exhaled by the patient; S152, the anesthetic gas exhaled by the patient is dehydrated through a condensation module to form a gas with less water content; S153, the gas with less water content is heated by a heating module to form a gas with reduced liquefaction; S154, the reduced liquefied gas is passed through an infrared detection module to detect the gas content, and the result is recorded as detection data; S155. Continuously obtain detection data, and if the detection data changes, execute the detection strategy.

8. The method of the anesthetic gas concentration measurement system according to claim 7, characterized in that: The specific steps in S154 are: S1541, infrared light source emits infrared light; S1542, infrared light is absorbed by the anesthetic gas through the anesthetic circuit pipeline, and the absorbed anesthetic gas reaches the light shielding wheel; S1543, the shading wheel rotates at a constant speed, so that the infrared rays reach the shading sheet in the form of pulses; S1544. The transmitted light filtered by the filter reaches the photoelectric transducer and is converted into a transmittance value of an electrical signal by the photoelectric transducer.

9. The method of the anesthetic gas concentration measurement system according to claim 8, characterized in that: S155. Continuously obtain test data. If the test data changes, execute the test strategy. The specific test strategy is: Obtain the degree of muscle relaxation of the anesthetized patient, recorded as Y; A first muscle relaxation threshold interval is set, denoted as (K1, K2), which is used to determine the degree of muscle relaxation of an anesthetized patient; A second muscle relaxation threshold interval is set, denoted as (K3, K4), which is used to determine the degree of muscle relaxation of anesthetized patients; Determine the muscle relaxation threshold interval of the muscle relaxation degree Y; If the muscle relaxation degree Y is within the first muscle relaxation threshold interval (K1, K2), the first detection strategy is executed; If the muscle relaxation degree Y is within the second muscle relaxation threshold interval (K3, K4), the second detection strategy is executed.

10. The method of the anesthetic gas concentration measurement system according to claim 9, characterized in that: Create a line graph of light transmittance versus time to provide feedback on the rate of change of gas; Set the first target gas change rate threshold of the first muscle relaxation threshold interval, denoted as (N1, N2); Set the second target gas change rate threshold value of the second muscle relaxation threshold interval, recorded as (N3, N4); The target gas change rate threshold is used to determine the gas change rate; Get the gas transmittance in the previous minute, recorded as M1; Get the current gas transmittance, recorded as M2; Calculate the current gas change rate, recorded as B, the current gas change rate B = current gas transmittance M2 - gas transmittance M1 of the previous minute; The first detection strategy is specifically: if the current gas change rate B is within the first target gas change rate threshold interval (N1, N2), then continue to measure the anesthetic gas concentration; If the current gas change rate B is not within the first target gas change rate threshold interval (N1, N2), the maintenance strategy is executed; The second detection strategy is specifically: if the current gas change rate B is within the second target gas change rate threshold (N3, N4), then continue to measure the anesthetic gas concentration; If the current gas change rate B is not at the second target gas change rate threshold (N3, N4), the maintenance strategy is executed; The specific maintenance strategy is: start the steering valve, replace another infrared detection unit for detection, and respond to the alarm. The staff disassembles and repairs the abnormal infrared detection unit and closely observes the patient's condition.

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