92 results about "Airway pressures" patented technology

The invention relates to an anesthetic gas output control system for an anesthesia machine and a method thereof, and relates to the technical field of anesthesia machines, the system comprises a data acquisition module used for collecting breathing parameters and gas state parameters of a patient and constructing a breathing dynamics model containing nonlinear correction; the concentration prediction module is used for constructing a gas mixing concentration prediction model with pressure dynamic compensation according to the airway pressure of the anesthetic gas output by the respiratory dynamic model; the parameter control module is used for constructing a control objective function based on the concentration deviation, the flow change rate and the pressure deviation of the anesthetic gas; the self-adaptive compensation module is used for determining a self-adaptive compensation factor based on the concentration deviation and the pressure change rate of the anesthetic gas; the flow correction module is used for calculating flow correction values of various anesthetic gases; and the gas output module is used for outputting the anesthetic gas according to the flow correction values of various anesthetic gases. The system can improve the accuracy of anesthetic gas output control.

The invention particularly discloses an intelligent monitoring type integrated negative pressure sputum suction device and a working method thereof. According to the device, a plurality of functional systems are integrated in the main body framework, so that the occupied space is effectively reduced. The core innovation point is that the intelligent monitoring and risk assessment system is integrated with various sensors and can monitor a plurality of key parameter indexes in real time, during working, first-level risks are judged by detecting basic parameters such as blood oxygen and heart rate, then second-level risks are determined by monitoring parameters such as airway pressure, and so on until the risk level is accurately judged; and a coping strategy is formulated accordingly. Meanwhile, the main control system intelligently manages operation of all the modules, it is ensured that the risk assessment and decision module and the basic sign monitoring module are normally opened, and other modules are started according to judgment logic, so that the operation cost is saved, repeated abnormal judgment is avoided, the sputum suction operation process is optimized, the safety, effectiveness and intelligent level of the sputum suction process are improved, and the sputum suction efficiency is improved. And more reliable support is provided for clinical treatment.

The application provides a real-time closed-loop adaptive airway pressure regulating system. The system comprises a respirator mask and a host computer; the respirator mask is provided with an airflow monitoring module, a pressure monitoring module, a snore monitoring module, a lower jaw electromyography monitoring module, a forehead transcutaneous carbon dioxide sensing module and a preprocessing module; the host computer is internally provided with an intelligent module; the preprocessing module pre-processes airflow velocity, pressure data, airway vibration signals, electrical signals corresponding to lower jaw and pharyngeal muscle activity and carbon dioxide content measured by the airflow monitoring module, the pressure monitoring module, the snore monitoring module, the lower jaw electromyography monitoring module and the forehead transcutaneous carbon dioxide sensing module in real time; the intelligent module identifies a risk window period of airway collapse of a user in real time according to the pre-processed data and performs adaptive pressure boosting control on the pressure in the airway of the patient after identification. The application reduces the misjudgment rate of newly occurring CSA events of complex sleep apnea after OSA relief.

The utility model discloses a breathing pipeline device capable of adjusting and releasing airway pressure, which comprises a breathing sputum excretion device body, a fourth connector, an air valve main body, an adjusting assembly and a sputum excretion assembly, and the air valve main body is used for blocking or opening an airflow channel in the fourth connector; the sputum excretion assembly is used for providing an upward opening moving stroke for the air valve assembly, one end of the sputum excretion assembly is installed on the breathing sputum excretion device body, and the other end of the sputum excretion assembly is installed on the top of the air valve body. The adjusting assembly is arranged on the periphery of the breathing sputum excretion device body and the periphery of the sputum excretion assembly in a sleeving mode. The distance between the breathing sputum excretion device body and the sputum excretion assembly is adjusted through the adjusting assembly, and then the pressing force of the sputum excretion assembly for pressing the air valve assembly is adjusted; therefore, the breathing intensity of the patient during breathing training can be adjusted, and the device is suitable for breathing rehabilitation training of various moderate and mild patients in the lung department and contributes to expectoration of sputum.

The present invention provides a bionic composite artificial trachea, comprising: an artificial tracheal wall; the artificial tracheal wall comprising a biological patch layer and an absorbable biomaterial layer from the inside out; a tracheal stent disposed on the outside of the artificial tracheal wall; and a gasket wrapping the edge of the tracheal stent. The bionic composite artificial trachea, with the biological patch layer and the absorbable biomaterial layer as the artificial tracheal wall, combined with the arrangement of the tracheal stent, not only provides good ventilation, but also can slightly deform with airway pressure and has a certain degree of elasticity, so that the patient's head can move freely, without the trouble of having to fix the neck after traditional tracheal surgery; at the same time, the arrangement of the gasket can prevent the end of the tracheal stent from bruising surrounding organs due to friction during the initial implantation period; in summary, the bionic composite artificial trachea provided by the present invention can be applied clinically and can solve the problem of the lack of an effective tracheal substitute for primary tracheal reconstruction during the resection of an extra-long trachea in current tracheal surgery in a single operation.

This invention relates to the field of medical device technology and provides a method, system, and medical device for measuring peak cough flow rate. The method includes real-time acquisition of inspiratory and expiratory flow rate signals and airway pressure signals; monitoring changes in the expiratory flow rate signal to identify burst cough events and lock a cough analysis window; calculating the difference in inspiratory and expiratory flow rates within the cough analysis window to obtain a baseline cough flow rate sequence; calculating the airway pressure signal within the cough analysis window using a system leakage factor to obtain a leakage flow rate compensation sequence; determining coefficients based on the ratio of tubing and patient airway resistance parameters and multiplying the expiratory flow rate signals to obtain a tubing resistance compensation sequence; superimposing the above sequences to obtain a corrected flow rate sequence; and extracting extreme value features and evaluating the effectiveness of the corrected flow rate sequence generated after a preset number of iterations to determine the peak cough flow rate value. This invention solves the problems of inaccurate and inefficient measurement results in existing peak cough flow rate measurements.

The utility model relates to the technical field of medical instruments, in particular to an anaesthesia machine rack and an anaesthesia machine. The anesthesia machine rack comprises a front shell assembly, an air inlet shell assembly and a lower shell assembly. The front shell assembly is detachably provided with a display screen of the anesthesia machine, an oxygen sensor, a manual machine control key, a flying shuttle knob, a quick oxygen supply valve button, an airway pressure gauge, an air source pressure gauge, a flowmeter assembly, a total flow tube, a flow adjusting knob and a breathing loop. The air inlet shell assembly is used for detachably installing an evaporator and an air inlet assembly of the anaesthesia machine. The lower shell assembly is used for detachably installing a turbine assembly, a power supply assembly and a communication assembly of the anaesthesia machine; the front shell assembly and the air inlet shell assembly are located above the lower shell assembly, and the front shell assembly is connected with the air inlet shell assembly and the lower shell assembly through riveting connecting pieces. According to the anesthesia machine rack, the stability and rigidity of the whole rack are improved, the structure is small and exquisite, firmness and stability are achieved, the strength is high, and assembly of parts is facilitated.

A pressure detection device and ventilation equipment, wherein the pressure detection device includes a partition member with a ventilation cavity provided through it in the axial direction and a detection cavity provided in the partition member in the radial direction, the port of the ventilation cavity located on one side of the partition member is used to seal the outlet end of the gas pressurizing device, the port of the ventilation cavity located on the other side of the partition member is used to seal the inlet end of the gas humidifying device, and the detection cavity is connected to the ventilation cavity for installing the pressure detection member. Setting the pressure detection position at the end of the gas pressurizing device can not only reduce the air pressure fluctuations generated by the gas pressurizing device, but also play a role in stabilizing the pressure with the help of the gas humidifying device, so that the pressure detection result is more accurate; at the same time, because the detection position is close to the patient end, it can more truly reflect the patient's airway pressure, and the gas pressurizing device can be regulated according to the pressure feedback, which can avoid causing discomfort to the patient and allow the patient to breathe naturally and comfortably.

The invention relates to the technical field of snoring patient treatment, and discloses a snoring patient lower jaw position and airway pressure linkage adjusting device which comprises a breathing machine body, a mask is connected to one end of an air delivery pipe, a tap is mounted on the outer wall of one end of the air delivery pipe, and an upper gear sleeve is connected to one end of a first air guide pipe; according to the breathing machine, the lower jaw airway linkage adjusting mechanism is arranged, oxygen on the breathing machine body can enter the first hose through the tap joint, and when a snore symptom patient wears a mask, the oxygen can enter the first hose through the tap joint, so that the breathing machine body is more comfortable to wear, and the breathing machine body is more comfortable to wear. An upper tooth sleeve and a lower tooth sleeve on one side of the mask are worn in the oral cavity of a patient, oxygen intermittently enters a second hose, air bags on the upper tooth sleeve and the lower tooth sleeve are intermittently expanded and contracted, then the throat of the lower jaw of the patient in sleep is intermittently expanded, gas between the lower jaw and an airway flows in a linkage mode, and therefore the patient can feel more comfortable. And the patient can breathe smoothly.

The invention discloses a plateau altitude self-adaptive compensation system and method for an emergency breathing machine. The plateau altitude self-adaptive compensation system comprises a sensing module, a control module, a power module, a gas circuit driving circuit, a man-machine interaction module, an execution module and an additional function module. Acquiring a plateau altitude self-adaptive compensation data set; the plateau altitude adaptive compensation data set comprises altitude height information, fan parameter information, atmospheric pressure information, airway pressure information, gas flow information and temperature information; training a preset fan drive control model by using the plateau altitude self-adaptive compensation data set to obtain an optimized fan drive control model; and processing plateau altitude self-adaptive compensation data to be processed by utilizing the optimized fan drive control model to realize plateau altitude self-adaptive compensation of the emergency breathing machine. The method can adapt to different altitudes and automatically compensate the influence of atmospheric pressure change on tidal volume and minute ventilation output precision.

This invention relates to the field of high-frequency ventilator technology and discloses a high-frequency ventilator operating method based on flow control. The high-frequency ventilator sequentially outputs multiple average airway flow rates of the same or different magnitudes and with the same or different durations according to a set periodic pattern. The airway flow rate output is stable during the expiratory and inspiratory phases, and the average airway flow rate can be output at the same or different magnitudes during different inspiratory and expiratory phases. The output gas flow rate of the high-frequency ventilator can be independently adjusted periodically between different ventilation flow rate levels within different durations. In high-frequency ventilation, the flow control-based high-frequency ventilation method can precisely control the gas flow rate and time. Flow control ventilation can better control changes in airway pressure. By setting appropriate flow rates and times, the delivery volume of the device can be accurately estimated to reduce airway pressure and risks, and lower the possibility of barotrauma.

This disclosure provides a breathing recognition method applicable in a ventilation apparatus. In the breathing recognition method, an airway pressure and a gas flow rate can be acquired during mechanical ventilation; correlation data corresponding to the airway pressure and the gas flow rate can be determined according to the airway pressure and the gas flow rate; and a breathing state of a patient can be recognized according to a change in the correlation data.

The invention discloses a calibration system and method for a medical simulated lung. The calibration system comprises a gravity air bellow device connected with the simulated lung. The bottom of the gravity air bellow device is connected with the simulated lung; a weight module is arranged at the top of the gravity air bellow device, the side wall of the gravity air bellow device has deformation and rebounding capabilities in the vertical direction, and the top of the gravity air bellow device can be downwards compressed and deformed under the action of the weight module so as to exhaust gas to the simulated lung; a flow meter and a pressure meter are installed on the air channel and used for measuring the pressure value and the air flow rate in the simulated lung in the air exhausting process. The gravity generated by the weight module is gradually increased to act on the air bellow, the air bellow is promoted to be compressed and deformed, gas is gradually injected into the simulated lung, the pressure gauge and the flow instrument are adopted for monitoring, the gas volume and the airway pressure are obtained, and the compliance and the compliance curve of the medical simulated lung can be calculated. Therefore, whether the technical parameters of the medical simulated lung meet the requirements or not is verified.

The invention provides a real-time closed-loop adaptive airway pressure regulation system. The system comprises a respirator mask and a host, an airflow monitoring module, a pressure monitoring module, a snore monitoring module, a lower jaw myoelectricity monitoring module, a forehead percutaneous carbon dioxide sensing module and a preprocessing module are arranged on the respirator mask; an intelligent module is arranged in the host; the preprocessing module is used for preprocessing airflow speed, pressure data, airway vibration signals, electric signals corresponding to lower jaw and pharyngeal muscle activities and carbon dioxide content measured by the airflow monitoring module, the pressure monitoring module, the snore monitoring module, the lower jaw myoelectricity monitoring module and the frontal percutaneous carbon dioxide sensing module in real time; and the intelligent module identifies the risk window period of airway collapse of the user in real time according to the preprocessed data and performs boosting control on the pressure in the airway of the patient in a self-adaptive manner after identification. According to the method and the device, the misjudgment rate of a new CSA event of the complex sleep apnea after the OSA is relieved is reduced.

This invention discloses a gas mixing flow control method and system for a ventilator, comprising: A1: collecting and preprocessing time-series data of airway pressure and respiratory flow; A2: constructing a respiratory noise reduction and enhancement gating mechanism to extract noise-reduced respiratory features; A3: extracting sleep posture features based on the noise-reduced respiratory features; A4: calculating the probability distribution of sleep posture states at each time step based on the sleep posture features using global average pooling and a classification layer, and selecting the state code corresponding to the maximum probability to obtain the sleep posture state sequence; A5: extracting comprehensive respiratory features; A6: extracting gas mixing features based on the comprehensive respiratory features; A7: outputting the gas mixing flow result based on the gas mixing features and controlling the operation of the ventilator's oxygen solenoid valve and air fan. This invention can solve the problem of traditional methods failing to address the mismatch between ventilator parameter adjustments and the turning rhythm of elderly COPD patients.

The invention discloses full-automatic fresh air breathing auxiliary equipment and a control method thereof, and belongs to the technical field of breathing protection. The equipment comprises a head-mounted unit, a fresh air host, an air path connecting pipe, a low-pressure sensor and an MCU controller. The head-mounted unit comprises a nose mask and a fixing piece, and the bottom of the nose mask is provided with an exhaust port and a one-way stepped valve plate integrally formed by ultra-soft silica gel; the fresh air main machine is fixed to the rear portion of the head and communicates with the nose mask through an air path connecting pipe embedded in the fixing piece. The low-pressure sensor detects the airway pressure in real time, and the measurement range is 0.1-2 inches of water column; the MCU controller is configured to control the fresh air host to increase the output power when it is detected that expiration is started, and positive pressure airflow is output to assist in pushing the exhaust valve plate open. Complete separation of an inspiration air path and an expiration air path is achieved, pure fresh air is provided for a user through intelligent control of'expiration detection-active discharge assistance ', and the device has the advantages of being extremely simple in structure, extremely effective in control and extremely suitable in respiration and can be widely applied to daily protection and respiration assistance of rhinitis patients and chronic obstructive pulmonary patients.

The invention relates to the technical field of medical instruments, in particular to a self-adaptive respirator parameter optimization system and method based on artificial intelligence, and the self-adaptive respirator parameter optimization system is constructed by combining real-time collection of a high-precision sensor, depth time sequence modeling and intelligent prediction based on TimesNet at a cloud end and closed-loop self-adaptive parameter adjustment. Specifically, one-dimensional breathing signals are reconstructed into multi-cycle 2D representation at the cloud end, multi-scale feature extraction is carried out, short-term and medium-term breathing parameter changes can be predicted more accurately, and predicted values serve as feed-forward input to work cooperatively with traditional PID closed-loop control. Therefore, smooth and real-time adjustment of key parameters such as airway pressure, tidal volume, respiratory rate, humidifier, fan and the like is realized. According to the method, the adaptive capacity and parameter adjustment precision of individual breathing modes of different patients are remarkably improved, and manual intervention and error risks are reduced.

The application discloses a pressure compensation control method, device, equipment and medium of a breathing apparatus, comprising: acquiring a tidal volume of a user using the breathing apparatus and a gas flow rate of breathing gas at a current time; setting a tidal volume weight parameter for controlling a tidal volume at a next time and a gas flow rate weight parameter for controlling a gas flow rate at the next time; obtaining a tidal volume compensation amount at the next time according to the product of the tidal volume weight parameter and the tidal volume; obtaining a gas flow rate compensation amount at the next time according to the product of the gas flow rate weight parameter and the gas flow rate; obtaining an airway pressure compensation amount at the next time according to the sum of the tidal volume compensation amount and the gas flow rate compensation amount; and performing pressure compensation on an output pressure value of the breathing apparatus at the next time according to the acquired output pressure value and the airway pressure compensation amount at the current time. The application solves the problem that the constant pressure support provided by the ventilation mode of the existing breathing apparatus is easy to cause insufficient ventilation support or excessive support.

A ventilation device and its diaphragm installation detection method, apparatus, medium, and controller are disclosed. The method includes: recording the airway pressure in the expiratory airway during the process of introducing gas from the inlet into the expiratory airway to obtain an initial pressure waveform, wherein the inlet pressure of the gas is less than the PEEP value set by the PEEP valve; and determining whether the diaphragm is installed at the outlet of the expiratory airway based on the initial pressure waveform. The solution provided in this application can effectively detect the situation where the diaphragm at the outlet of the expiratory airway of the ventilation device is missing.

The disclosure provides an airway anomaly detection method and a ventilation device thereof. The method may include acquiring a ventilation parameter, where the ventilation parameter includes at least one of an airway pressure and airway flow; detecting, according to a change of the ventilation parameter, whether an airway anomaly event occurs; and when it is determined that the airway anomaly event occurs, outputting an airway anomaly event prompt.

The invention relates to the technical field of high-frequency ventilation methods, in particular to a high-frequency ventilation method and system for preventing lung injury, comprising: acquiring historical control parameters of a high-frequency ventilator during anesthesia within a preset time period; real-time ventilation information is obtained, and correlation evaluation is conducted on the standardized historical control parameters and the real-time ventilation information; accumulating the real-time ventilatory capacity data in a time dimension, comparing the real-time ventilatory capacity data with a preset total ventilatory capacity requirement during anesthesia, and determining a standard grade based on a comparison difference; a first control strategy, a second control strategy and a third control strategy are generated according to the standard grade, and control parameters of the high-frequency breathing machine are optimized; and performing real-time driving control on the high-frequency breathing machine based on the optimized control parameter group. The problem of risks of volume injury, pressure injury and the like in the prior art is solved, the amplitude, the frequency, the average airway pressure and the inhaled oxygen concentration are dynamically optimized in the whole anesthesia process, and the total lung stretching amount is always kept within a safe range.

The present application belongs to the technical field of medical general equipment, and relates to a ventilator phase switching method and device based on respiratory effort recognition, a ventilation equipment and a storage medium. The method comprises the following steps: monitoring a patient's proximal ventilation flow and airway pressure; according to a set logical enabling condition, avoiding an undesirable recognition period; the undesirable recognition period is an initial unstable stage after the ventilator inflation or breathing starts; outside the undesirable recognition period, based on the waveform trajectory change characteristics of the ventilation flow and the airway pressure, the time when the patient's inspiratory effort ends, the expiratory effort starts or the inspiratory effort starts is recognized; and according to the recognition result, the ventilator is controlled to switch between the inflation phase and the exhalation phase. The present application can improve the sensitivity and accuracy of respiratory effort recognition, improve the time synchronization of ventilation triggering and switching, reduce the phenomenon of man-machine asynchronization, and improve the comfort and effectiveness of mechanical ventilation support.

The present invention relates to an integrated sleep diagnosis and treatment device, and more particularly to an integrated apnea diagnosis and treatment device. The present invention additionally relates to method of sleep diagnosis and treatment.

An insufflator (1) for insufflating a peritoneal cavity (2) of a subject (3) comprises a microprocessor (25) operating a flow controller (19) in response to a signal read from a pressure sensor (29) indicative of cavity pressure for insufflating the cavity at a target pressure value. The microprocessor (25) reads a signal from a pressure sensor (37) indicative of the peak airway pressure of a subject, and operates the flow controller (19) and / or a venting valve (33) to reduce the cavity pressure to prevent the peak airway pressure of the subject exceeding a maximum safe peak airway pressure value. The heart rate of the subject (3) is also monitored, and insufflating of the cavity (2) is terminated on the heart rate of the subject falling below a predefined minimum heart rate value. The insufflator (1) may also be configured to monitor the depth of anaesthesia of a subject by monitoring an alternating component of cavity pressure induced in the cavity pressure by ventilating of and / or natural breathing of the subject.

The invention relates to the field of intelligent testing, and discloses an anaesthesia machine testing method, device and equipment and a medium, and the method comprises the steps: controlling an anaesthesia machine to close an exhaust port of a mechanical ventilation loop of the anaesthesia machine, transmitting gas to the mechanical ventilation loop until the airway pressure of the mechanical ventilation loop reaches a preset testing pressure, stopping gas transmission, and maintaining a preset pressure stabilization duration, recording the initial pressure, the highest pressure and the end pressure in the gas transmission process through a pressure sensor of the mechanical ventilation loop; the gas conveying flow, the inspiration flow and the expiration flow in the gas conveying and preset pressure stabilizing duration maintaining process are collected; and according to the initial pressure, the highest pressure, the end pressure and the corresponding initial moment, the highest moment and the end moment, combining the gas transmission flow, the inspiration flow and the expiration flow, calculating the leakage rate of the mechanical ventilation loop and the pipeline compliance, and according to the leakage rate of the mechanical ventilation loop and the pipeline compliance, obtaining a test result. The problems of high test cost and complex operation of the anaesthesia machine in the prior art are solved.

A device to provide positive airway pressure for use in pressure therapy to treat respiratory-related diseases. The device includes a casing configured to enclose and protect its internal components from external environmental interference. Inside the casing, a noise-reducing air passage is provided, which has an inlet, an outlet, an inner wall, and an outer wall, configured to receive external gas and allow pressurized gas to flow out. The noise-reducing air passage also houses a blower assembly, a core component of the device, configured to pressurize the breathable gas entering the noise-reducing air passage and then output it. Specifically, the blower assembly includes an impeller, a motor, and its internal gas channel. The blower assembly also has an intake port and an exhaust port.

A flexible positive airway pressure (PAP) mask body, frame, and cushion are described. The mask body includes prongs that insert through and act upon apertures of the mask frame to connect the mask frame to the mask body. An airtight seal may be created between the mask body and the mask frame by a ball and socket connector, of the mask frame, having an elongated portion that extends through and has an outer perimeter commensurate with an aperture located in the mask body. The mask body may be configured with elongated portions that extend from the mask body chamber and to ends of eye sockets of the user. Headgear may couple to end portions of the mask frame corresponding to the elongated portions of the mask body. When pulling pressure by the headgear, additional contact is created between elongated portions of the mask cushion and the user's face.

A technology system implements processing apparatus, such as one or more server(s) and / or respiratory therapy device(s) (4000), to characterize insomnia such as for comorbid sleep apnea and insomnia (COMISA) subjects. The technology may be implemented with artificial intelligence, such as machine learning. The technology may be configured to receive objective data relating to a user's therapy and / or sleep from sensor(s) associated with the user. The sensor(s) may be in. or associated with, a positive airway pressure (PAP) device. The technology may be configured to receive subjective data relating to the user's sleep. The technology may be configured to input the objective data and subjective data into a classification system or classifier. The classifier may then apply the objective and subjective data to (a) determine key characteristics for patients that distinguish phenotypes of COMISA; and / or (b) distinguish phenotypes of COMISA based on previously7 determined ones of the key characteristics.

The invention relates to a method for determining the carbon dioxide concentration in a measurement gas, comprising the following steps: branching off measurement gas from a main line (15) of a medical device (12) via a branch line (14) during the inhalation phase of a person (13) connected to the medical device (12) as inhaled gas and during the exhalation phase of the person (13) as exhaled gas towards a sensor unit (11); conveying the measurement gas from the main line (15) via the branch line (14) towards the sensor unit (11) by means of a fluid conveying unit (24); adaptively setting the fluid conveying unit (24) while taking into account the airway pressure in the main line (15) in order to generate a uniform volume flow and / or gas pressure of the measurement gas in the branch line (14) towards the sensor unit (11) during the inhalation phase and the exhalation phase; and determining the carbon dioxide concentration in the measurement gas by means of the sensor unit (11). The invention further relates to an ascertainment device (10), a medical apparatus (12), a setting unit (26), a computer program product (29), and a memory device (30) having the computer program product (29) stored thereon for carrying out the method according to the invention.

The application discloses a method for obtaining an autogenous breathing effort curve under mechanical ventilation based on a breathing machine waveform, which can calculate resistance and compliance in a patient's respiratory system through airway pressure and flow rate waveforms of the breathing machine when the breathing machine ventilates the patient, and then calculate the autogenous breathing effort of the patient during each breath according to the resistance and compliance and the pressure and flow rate waveforms. For each different patient, the method can calculate the change of pressure and resistance with time and the inspiratory effort intensity curve of each breath. The content can help doctors better judge the condition of the patient, thereby better assisting clinical treatment.