A non-invasive carbon dioxide partial pressure monitoring ear clip and an intelligent monitoring method thereof

Abstract

The present application relates to the technical field of medical information monitoring, and more particularly to a non-invasive carbon dioxide partial pressure monitoring ear clip and an intelligent monitoring method thereof, comprising: determining that a trigger alarm is determined based on a theoretical carbon dioxide partial pressure value to determine that the partial pressure is unqualified; determining the content unqualified based on the evaluation concentration value; determining the alarm state according to the relationship between the first deviation value and the risk deviation value; in response to determining that the content is unqualified, determining that the second evaluation is inaccurate based on the actual standard deviation value; according to the relationship that the second deviation value is less than or equal to the second deviation threshold, the evaluation concentration value is re-determined based on the theoretical carbon dioxide partial pressure value, so as to re-determine the partial pressure qualification, and the early warning concentration range is re-determined according to the second deviation value; the present application can quickly and accurately obtain the carbon dioxide partial pressure condition through multi-parameter coupling in a non-invasive manner, and can master the alveolar ventilation function and the respiratory function in real time through the carbon dioxide partial pressure condition.

Description

Technical Field

[0001] This invention relates to the field of medical information monitoring technology, and in particular to a non-invasive carbon dioxide partial pressure monitoring ear clip and its intelligent monitoring method. Background Technology

[0002] Currently, the mainstream method for monitoring PaCO2 values ​​to assess alveolar permeability and respiratory function relies on arterial blood gas analysis. This requires arterial puncture or placement, which increases the risk of infection and hematoma. Furthermore, it cannot monitor carbon dioxide partial pressure in real time, and obtaining this information is technically challenging. Another method for obtaining PaCO2 values ​​is through percutaneous PtcCO2 detection devices. However, this requires heating the skin to 42°C for children and 44°C for adults. Its accuracy is highly dependent on good local and systemic blood perfusion, which percutaneous PtcCO2 detection devices lack. Therefore, it is limited by factors such as skin temperature and blood perfusion, has a significant measurement delay, and requires a heated sensor, making it unsuitable for prolonged wear.

[0003] Chinese Patent Publication No. CN118766450A discloses a real-time non-invasive blood gas physiological parameter monitoring system for an extracorporeal circulation artificial tubing, applied in the field of medical information monitoring technology. It includes a sensing module, a data processing module, and a display module. The sensing module comprises a laser light source, a photodetector, and a monitoring probe. Multiple laser light sources with different center wavelengths are used to irradiate the blood sample. The photodetector receives the transmitted light intensity, and the monitoring probe is used for optical path transmission. The data processing module calculates and calibrates the physiological parameters of the blood sample, and the display module displays the monitoring results. However, the real-time non-invasive blood gas physiological parameter monitoring system for an extracorporeal circulation artificial tubing has the following problems:

[0004] It is not possible to obtain carbon dioxide partial pressure quickly and accurately through multi-parameter coupling in a non-invasive manner, and to monitor alveolar ventilation and respiratory function in real time based on carbon dioxide partial pressure. Summary of the Invention

[0005] Therefore, this invention provides a non-invasive carbon dioxide partial pressure monitoring ear clip and its intelligent monitoring method to overcome the problem in the prior art that it is impossible to quickly and accurately obtain carbon dioxide partial pressure through multi-parameter coupling without invasiveness, and to monitor alveolar ventilation and respiratory function in real time through carbon dioxide partial pressure.

[0006] To achieve the above objectives, the present invention provides a non-invasive intelligent monitoring method for carbon dioxide partial pressure, comprising:

[0007] Obtain the concentration of dissolved carbon dioxide in the gas phase at the monitoring location, determine the theoretical partial pressure of carbon dioxide, and determine the alarm based on the partial pressure failure based on the theoretical partial pressure value.

[0008] The alarm status is determined based on the relationship between the first deviation value and the risk deviation value, according to the judgment result of the non-compliance of the evaluation concentration value; wherein, the evaluation concentration value is determined based on the carbon dioxide concentration, and the first deviation value is determined based on the evaluation concentration value and the warning concentration range;

[0009] In response to the determination that the content is unqualified, the first assessment is determined to be inaccurate based on the actual temperature value. The evaluation concentration value is re-determined according to the relationship that the first excess value is less than or equal to the risk excess value. The actual temperature value is determined based on the temperature at the monitoring location, and the first excess value is determined based on the actual temperature value and the warning temperature range.

[0010] In response to the determination that the content is unqualified, the second assessment is determined to be inaccurate based on the actual standard deviation value. The theoretical carbon dioxide partial pressure value is re-determined based on the relationship that the second deviation value is less than or equal to the second deviation threshold, so as to re-determine the partial pressure qualification. The warning concentration range is re-determined based on the second deviation value. The actual standard deviation value is determined based on the standard deviation of all normal sinus intervals at the monitoring location.

[0011] Furthermore, the process of determining that the partial pressure is unqualified includes,

[0012] Compare the theoretical partial pressure of carbon dioxide with the preset partial pressure range to determine the qualification of the partial pressure;

[0013] In response to the determination that the partial pressure is unqualified, an alarm is triggered; wherein, the theoretical carbon dioxide partial pressure value is determined based on the evaluation concentration value.

[0014] Furthermore, the process for determining whether the content is unqualified includes,

[0015] Compare and evaluate the concentration value with the warning concentration range to determine the compliance of the content;

[0016] In response to the determination that the content is unqualified, the first deviation value is compared with the risk deviation value, and an alarm is triggered based on the relationship that the first deviation value is greater than the risk deviation value.

[0017] Furthermore, the process of determining that the first assessment is inaccurate based on the actual temperature value includes,

[0018] Compare the actual temperature value with the warning temperature range to determine the accuracy of the first assessment;

[0019] In response to the determination that the first assessment is inaccurate, the first excess value is compared with the risk excess value. Based on the fact that the first excess value is greater than the risk excess value, an alarm is triggered.

[0020] Furthermore, the process of determining the inaccuracy of the second assessment based on the actual standard deviation value includes,

[0021] Compare the actual standard deviation value with the warning standard deviation range to determine the accuracy of the second assessment;

[0022] In response to the determination that the second assessment is inaccurate, the second deviation value is compared with the second deviation threshold. Based on the fact that the second deviation value is greater than the second deviation threshold, an alarm is triggered.

[0023] Furthermore, in response to redetermining the warning concentration range, the boundary of the adjusted warning concentration range is determined based on the deviation direction of the actual standard deviation value relative to the warning standard deviation range; wherein the boundary includes the peak and valley values ​​of the adjusted warning concentration range.

[0024] Furthermore, in response to adjusting the boundary of the warning concentration range, the warning concentration range is redefined based on the boundary adjustment amount corresponding to the second deviation value, wherein the boundary adjustment amount is positively correlated with the second deviation value.

[0025] Furthermore, in response to the redetering of the theoretical carbon dioxide partial pressure value, the theoretical carbon dioxide partial pressure value is redetering according to the partial pressure correction value set corresponding to the second deviation value, wherein the partial pressure correction value is positively correlated with the second deviation value.

[0026] Furthermore, the partial voltage correction value is determined based on the second deviation value and the partial voltage correction coefficient, wherein the partial voltage correction coefficient is positively correlated with the second deviation value.

[0027] Furthermore, the ear clip that uses the above-mentioned non-invasive carbon dioxide partial pressure intelligent monitoring method to monitor carbon dioxide partial pressure includes an ear clip body, a near-infrared sensor built into the ear clip body for acquiring carbon dioxide concentration, a temperature sensor for acquiring the actual temperature value of the monitoring location, and a blood perfusion sensor for compensating for environmental and individual differences.

[0028] Compared with the prior art, the beneficial effect of the non-invasive carbon dioxide partial pressure monitoring ear clip and its intelligent monitoring method of the present invention is that it can quickly and accurately obtain the carbon dioxide partial pressure through multi-parameter coupling without invasiveness, and monitor alveolar ventilation function and respiratory function in real time through the carbon dioxide partial pressure.

[0029] Furthermore, by non-invasively detecting the concentration of dissolved carbon dioxide in the gas phase at the earlobe, the theoretical partial pressure of carbon dioxide can be quickly obtained to assess alveolar ventilation and respiratory function. Compared to the current mainstream method of obtaining PaCO2 values ​​through arterial blood gas analysis, this method does not require arterial puncture or placement, does not increase the risk of infection and hematoma, and can monitor carbon dioxide partial pressure in real time. It also reduces the professional difficulty of obtaining carbon dioxide partial pressure and provides a faster, more convenient, non-invasive, and real-time way to obtain PaCO2 values. This provides data support for medical staff to monitor patients' alveolar ventilation and respiratory function in real time, and can promptly trigger alarms when PaCO2 values ​​are abnormal to quickly notify medical staff to conduct examinations, avoiding more serious consequences due to undetected abnormalities in patients' alveolar ventilation and respiratory function.

[0030] Furthermore, by acquiring the dissolved CO2 concentration in the gas phase in real time, the theoretical partial pressure of carbon dioxide is quickly determined by evaluating the concentration value to assess alveolar ventilation and respiratory function. Simultaneously, by evaluating the concentration value and the corresponding set warning concentration range, alveolar ventilation and respiratory function are assessed. This avoids occasional distortions in the theoretical partial pressure of carbon dioxide determined quickly by evaluating the concentration value, which could lead to misjudgments of alveolar ventilation and respiratory function based on a single parameter, thus missing abnormal patient conditions. By using the evaluated concentration value as an auxiliary means to assess alveolar ventilation and respiratory function using the theoretical partial pressure of carbon dioxide, alveolar ventilation and respiratory function are assessed from multiple perspectives, avoiding misjudgments caused by relying on a single parameter to assess the actual situation of alveolar ventilation and respiratory function, which could affect the understanding of the patient's condition. Therefore, through rigorous and multi-dimensional assessment of alveolar ventilation and respiratory function, the accuracy and precision of patient diagnosis are increased.

[0031] Furthermore, by assessing the degree of abnormality of the evaluated concentration value relative to the warning concentration range when an abnormality occurs, alveolar ventilation and respiratory function are judged. When the evaluated concentration value is severely abnormal relative to the warning concentration range, exceeding the absolute normal or potentially abnormal, an alarm is directly triggered. It is not necessary to further verify the accuracy of the theoretical carbon dioxide partial pressure value determined by the evaluated concentration value in judging alveolar ventilation and respiratory function, or the possibility of distortion of the theoretical carbon dioxide partial pressure value. This avoids situations where the theoretical carbon dioxide partial pressure value is still normal, but the evaluated concentration value is already severely abnormal. Thus, by using the theoretical carbon dioxide partial pressure value to judge alveolar ventilation and respiratory function from multiple directions, it ensures that medical staff have more accurate control over the patient's alveolar ventilation and respiratory function, avoiding the failure to detect abnormalities in the patient's alveolar ventilation and respiratory function in time, which could lead to missed opportunities for treatment.

[0032] Furthermore, by monitoring the patient's temperature in real time to verify the theoretical carbon dioxide partial pressure value determined by the evaluation concentration value, the validity of the currently acquired evaluation concentration value is verified. This avoids using distorted evaluation concentration values ​​to determine the theoretical carbon dioxide partial pressure value for judging alveolar ventilation and respiratory function when the evaluation concentration value is distorted due to changes in the patient's body temperature. Distorted evaluation concentration values ​​can lead to inaccurate and untimely monitoring of the patient's alveolar ventilation and respiratory function, resulting in erroneous judgments of the patient's alveolar ventilation and respiratory function due to matrix distortion of the evaluation concentration value and theoretical carbon dioxide partial pressure value. Therefore, actual temperature values ​​are introduced to correct distorted evaluation concentration values ​​and the theoretical carbon dioxide partial pressure value determined by the evaluation concentration value in a timely manner. This multi-source data verification verifies the accuracy of judging alveolar ventilation and respiratory function using the theoretical carbon dioxide partial pressure value, ensuring real-time monitoring of the patient's alveolar ventilation and respiratory function.

[0033] Furthermore, when the actual temperature value is outside the warning temperature range, indicating that the assessment of alveolar ventilation and respiratory function based on the theoretical carbon dioxide partial pressure value determined by the evaluation concentration value is inaccurate and has already affected the evaluation concentration value, the degree of distortion in the assessment of alveolar ventilation and respiratory function based on the theoretical carbon dioxide partial pressure value determined by the evaluation concentration value is further considered based on the deviation of the actual temperature value from the warning temperature range. When the actual temperature value deviates significantly from the warning temperature range, it is completely unnecessary to continue assessing alveolar ventilation and respiratory function based on the theoretical carbon dioxide partial pressure value determined by the evaluation concentration value, or to directly assess alveolar ventilation and respiratory function based on the evaluation concentration value. This indicates that the previous assessment of alveolar ventilation and respiratory function based on the theoretical carbon dioxide partial pressure value determined by the evaluation concentration value has been completely distorted, and the current actual temperature value deviates significantly. In this case, an alarm is directly triggered to prevent further damage to the patient's alveolar ventilation and respiratory function. The continuous deterioration of function in an abnormal state ensures that medical staff can intervene in a timely manner and quickly grasp the patient's current alveolar ventilation and respiratory functions, effectively preventing the risk of worsening of the condition due to delayed judgment, and improving the timeliness and accuracy of clinical intervention. If the actual temperature value deviates from the warning temperature range but does not trigger an alarm, the distorted evaluation concentration value is corrected by the first excess value of the actual temperature value relative to the warning temperature range. After correcting the distorted evaluation concentration value, the theoretical carbon dioxide partial pressure value is re-determined to judge alveolar ventilation and respiratory functions, and alveolar ventilation and respiratory functions are judged directly by the re-determined evaluation concentration value. This ensures that alveolar ventilation and respiratory functions can still be accurately judged under the interference of actual temperature values, providing data support for medical staff to judge alveolar ventilation and respiratory functions, and increasing the medical staff's response speed when the patient's alveolar ventilation and respiratory functions are abnormal. It ensures the accuracy of real-time monitoring data and the synchronization of clinical response, further reducing the risk of misjudgment and missed judgment, and protecting the patient's life safety.

[0034] Furthermore, when the theoretical carbon dioxide partial pressure value does not trigger an alarm but approaches an anomaly, the actual standard deviation value is determined by combining the warning standard deviation range corresponding to the current theoretical carbon dioxide partial pressure value. This verifies the accuracy of determining the theoretical carbon dioxide partial pressure value based on the evaluated concentration value for assessing alveolar ventilation and respiratory function, further improving the multidimensionality of the assessment of alveolar ventilation and respiratory function. This allows for a more refined assessment of alveolar ventilation and respiratory function. Without the assistance of the actual standard deviation value in assessing alveolar ventilation and respiratory function, distortions in the evaluated concentration value may go undetected, leading to simultaneous distortions in the theoretical carbon dioxide partial pressure value. This leads to an inability to accurately assess the patient's alveolar ventilation and respiratory function. If the deviation of the actual standard deviation from the warning standard deviation range is insufficient to trigger an alarm, the theoretical carbon dioxide partial pressure value determined by the evaluated concentration value is corrected based on the deviation of the actual standard deviation from the warning standard deviation range. This ensures that the accurate theoretical carbon dioxide partial pressure value determined after coupling multiple parameters and data is used to assess alveolar ventilation and respiratory function, thereby ensuring that medical staff have a full understanding of the patient's current alveolar ventilation and respiratory function status and increasing the accuracy of assessments of alveolar ventilation and respiratory function based on evaluated concentration values ​​and theoretical carbon dioxide partial pressure values.

[0035] Furthermore, by issuing an alarm when the theoretical carbon dioxide partial pressure value determined directly by the evaluation concentration value deviates significantly from the actual value, medical staff are prompted to immediately intervene to assess the patient's alveolar ventilation and respiratory function. This avoids the failure to promptly detect inaccuracies in the theoretical carbon dioxide partial pressure value determined directly by the evaluation concentration value, thus preventing the undetected abnormalities in the patient's alveolar ventilation and respiratory function. Simultaneously, when the actual standard deviation does not deviate from the warning standard deviation range to trigger the alarm, a partial pressure correction value is introduced to correct the accuracy of the theoretical carbon dioxide partial pressure value determined by the evaluation concentration value. This ensures that the theoretical carbon dioxide partial pressure value accurately reflects the patient's alveolar ventilation and respiratory function, increasing the accuracy of real-time monitoring of carbon dioxide partial pressure and the accuracy of assessing alveolar ventilation and respiratory function. This provides medical staff with a more reliable basis for decision-making, effectively reducing the risk of clinical misjudgment and improving the quality and safety of patient monitoring.

[0036] Furthermore, by dynamically correcting the theoretical partial pressure of carbon dioxide, corresponding partial pressure correction values ​​are introduced for different degrees of deviation to ensure the accuracy of the corrected theoretical partial pressure of carbon dioxide. This allows for precise adaptation to the monitoring needs of different individuals and physiological states, further improving the accuracy of alveolar ventilation and respiratory function assessment.

[0037] Furthermore, by using a portable ear clip to non-invasively acquire carbon dioxide partial pressure from multiple dimensions and data, a comprehensive and accurate assessment of alveolar ventilation and respiratory function can be achieved. Compared to traditional methods that rely on arterial blood gas analysis to obtain PaCO2 values, this method eliminates the need for arterial puncture or placement, thus avoiding increased risks of infection and hematoma. It also allows for real-time monitoring of carbon dioxide partial pressure, reducing the professional difficulty of obtaining this data. This enables faster, more convenient, non-invasive, and real-time acquisition of PaCO2 values, providing data support for healthcare professionals to monitor patients' alveolar ventilation and respiratory function in real time. Furthermore, it can promptly trigger alarms when PaCO2 values ​​are abnormal, quickly notifying healthcare professionals to conduct examinations and preventing more serious complications caused by undetected abnormalities in alveolar ventilation and respiratory function. The system can wirelessly transmit monitoring data to medical monitoring systems or other cloud platforms, such as mobile phones and other portable devices, in real time. This allows medical staff to view data reflecting the patient's alveolar ventilation and respiratory functions at any time, achieving an organic combination of remote monitoring and intelligent early warning. By continuously collecting carbon dioxide concentration, temperature, and hemodynamic parameters in the ear microcirculation, and combining them with a multi-parameter dynamic model to calculate the arterial blood carbon dioxide partial pressure in real time, it effectively eliminates measurement deviations caused by individual differences and environmental interference, achieving high-precision non-invasive monitoring. It can also obtain other data through the medical monitoring system to assess the patient's alveolar ventilation and respiratory functions from a more comprehensive perspective, increasing the assessment dimensions of the patient's alveolar ventilation and respiratory functions, and improving the timeliness and accuracy of clinical intervention. Attached Figure Description

[0038] Figure 1 This is a flowchart illustrating the non-invasive intelligent monitoring method for carbon dioxide partial pressure of the present invention.

[0039] Figure 2 This is a flowchart for determining the content compliance of the present invention;

[0040] Figure 3 This is a flowchart illustrating the process of redetermining the evaluation concentration value in this invention;

[0041] Figure 4 This is a structural diagram of the non-invasive carbon dioxide partial pressure monitoring ear clip of the present invention.

[0042] In the figure: Ear clip body 01, near-infrared sensor 02, temperature sensor 03, blood perfusion sensor 04. Detailed Implementation

[0043] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0044] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0045] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0046] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] Please see Figure 1 The following is a detailed description of an embodiment of non-invasive intelligent monitoring of carbon dioxide partial pressure;

[0048] An embodiment of the present invention provides a non-invasive intelligent monitoring method for carbon dioxide partial pressure, comprising:

[0049] Step S1: Obtain the concentration of dissolved carbon dioxide in the gas phase at the monitoring location, determine the theoretical carbon dioxide partial pressure value, and determine the alarm based on the theoretical carbon dioxide partial pressure value if the partial pressure is unqualified.

[0050] The near-infrared sensor 02 is used to obtain the concentration of dissolved carbon dioxide in the gas phase at the monitoring location. The emitting end of the near-infrared sensor 02 emits a combination of 940nm and 1060nm near-infrared light wavelengths that pass through the earlobe. The receiving end of the near-infrared sensor 02 receives the transmitted light. According to the Lambert-Beer law, the light intensity attenuation is followed to obtain the concentration of dissolved CO2 in the gas phase, determine the evaluation concentration value, and determine the theoretical carbon dioxide partial pressure value based on the evaluation concentration value.

[0051] Specifically, the process of determining that the partial pressure is unqualified includes comparing the theoretical carbon dioxide partial pressure value with the preset partial pressure range to determine whether the partial pressure is qualified;

[0052] In response to the determination that the partial pressure is unqualified, an alarm is triggered; wherein, the theoretical carbon dioxide partial pressure value is determined based on the evaluation concentration value.

[0053] The theoretical partial pressure of carbon dioxide = the evaluation concentration value × 760;

[0054] Compare the theoretical partial pressure of carbon dioxide with the preset partial pressure range to determine the partial pressure compliance; if the theoretical partial pressure of carbon dioxide is... The preset partial pressure range is used to determine if the partial pressure is within acceptable limits; if the theoretical carbon dioxide partial pressure value is... The preset voltage range is used to determine if the voltage is unacceptable.

[0055] The preset partial pressure range is 35-45 mmHg, when the theoretical carbon dioxide partial pressure value... A preset partial pressure range is used; when the partial pressure is within acceptable limits, it indicates that the alveolar ventilation is normal. If the theoretical carbon dioxide partial pressure value... If the partial pressure is set to a preset range, and the partial pressure is found to be unqualified, it indicates that the alveolar ventilation of the human body is abnormal, and an alarm is issued to provide data support for medical staff.

[0056] This invention detects the concentration of dissolved carbon dioxide in the gas phase at the earlobe location non-invasively. It rapidly obtains the theoretical partial pressure of carbon dioxide from this concentration to assess alveolar ventilation and respiratory function. Compared to the current mainstream method of obtaining PaCO2 values ​​through arterial blood gas analysis, PaCO2 values ​​are arterial blood carbon dioxide partial pressure values. This eliminates the need for arterial puncture or placement, reducing the risk of infection and hematoma. Furthermore, it allows for real-time monitoring of carbon dioxide partial pressure, lowering the technical difficulty of obtaining this information. This provides a faster, more convenient, non-invasive, and real-time way to acquire PaCO2 values, thus providing data support for medical personnel to monitor patients' alveolar ventilation and respiratory function in real time. It also promptly triggers alarms when PaCO2 values ​​are abnormal, quickly notifying medical personnel to conduct examinations and preventing more serious consequences from undetected abnormalities in alveolar ventilation and respiratory function.

[0057] Step S2: Based on the judgment result of the non-compliance of the evaluation concentration value, determine the alarm status according to the relationship between the first deviation value and the risk deviation value; wherein, the evaluation concentration value is determined based on the carbon dioxide concentration, and the first deviation value is determined based on the evaluation concentration value and the warning concentration range;

[0058] Please see Figure 2 The process for determining the content compliance is shown in detail.

[0059] Specifically, the process of determining whether the content is substandard includes,

[0060] The concentration value is compared with the warning concentration range to determine the content compliance; in response to the determination that the content is unqualified, the first deviation value is compared with the risk deviation value, and the alarm is triggered based on the relationship that the first deviation value is greater than the risk deviation value.

[0061] Compare the evaluation concentration value with the warning concentration range to determine the content compliance; if the evaluation concentration value If the concentration falls within the warning range, the content is deemed acceptable; if the concentration value is evaluated... If the concentration falls within the warning range, the content is deemed unqualified.

[0062] When evaluating concentration values The warning concentration range indicates that the CO2 concentration is within the ideal range and does not exceed it. At this time, the partial pressure of carbon dioxide is normal, the alveolar ventilation function is normal, and the carbon dioxide produced in the body can be effectively expelled. At the same time, the acid-base balance is also normal. The warning concentration range is 4.8%-5.7%, and the corresponding theoretical partial pressure of carbon dioxide is 36.48-43.32 mmHg. At this time, everything is normal and no alarm will be issued.

[0063] When evaluating concentration values When the concentration falls outside the warning range, it indicates that the CO2 concentration is outside the ideal range, suggesting a possible CO2 concentration anomaly. Similarly, the partial pressure of carbon dioxide may also be abnormal. Therefore, it is necessary to test the accuracy of determining the theoretical partial pressure of carbon dioxide from the evaluated concentration value. If the determination process is inaccurate, the process should be corrected using actual temperature and actual standard deviation values ​​to ensure the accuracy of the theoretical partial pressure. The alarm status should be determined based on the relationship between the first deviation value and the risk deviation value of the evaluated concentration value from the warning range. When the evaluated concentration value is less than the trough of the warning range, the first deviation value is determined by subtracting the evaluated concentration value from the trough. When the evaluated concentration value is greater than the peak value of the warning range, it is determined by subtracting the peak value from the evaluated concentration value.

[0064] This invention acquires the dissolved CO2 concentration in the gas phase in real time and rapidly determines the theoretical partial pressure of carbon dioxide by evaluating the concentration value. This is used to assess alveolar ventilation and respiratory function. Simultaneously, by evaluating the concentration value and setting corresponding warning concentration ranges, it assesses alveolar ventilation and respiratory function. This avoids occasional distortions in the theoretical partial pressure of carbon dioxide determined by the evaluation concentration value, which can lead to misjudgments of alveolar ventilation and respiratory function based on a single parameter, thus preventing the loss of insight into abnormal patient conditions. By using the evaluation concentration value as an auxiliary means to assess alveolar ventilation and respiratory function using the theoretical partial pressure of carbon dioxide, it provides a multi-dimensional assessment of alveolar ventilation and respiratory function, avoiding misjudgments caused by relying on a single parameter to determine the actual situation of alveolar ventilation and respiratory function, which can affect the understanding of the patient's condition. Therefore, through rigorous and multi-dimensional assessment of alveolar ventilation and respiratory function, it increases the accuracy and precision of patient diagnosis.

[0065] If the first deviation value is less than or equal to the risk deviation value, no alarm is issued, and the system enters warning mode for comprehensive judgment. The risk deviation value is 0.2%, determined based on the allowable concentration range and the warning concentration range. This indicates that although the CO2 concentration is within the allowable range of 4.6%-5.9%, corresponding to a theoretical carbon dioxide partial pressure range of 35-45 mmHg, and the allowable concentration range represents the normal CO2 concentration in the human body, the carbon dioxide partial pressure may already be abnormal. For example, in acute, mild hypercapnia, when the carbon dioxide partial pressure increases slightly, such as from 40 mmHg to 50 mmHg, the physically dissolved CO2 immediately increases. However, the bicarbonate buffer system in the blood will quickly activate, converting some of the dissolved CO2 into HCO3-. - Therefore, although the partial pressure of carbon dioxide is significantly increased and appears "normal" within the reference range, the increase in CO2 concentration may not be significant. For example, the CO2 concentration may still be 5.9%, and the theoretical partial pressure of carbon dioxide should be 45 mmHg, while the actual theoretical partial pressure of carbon dioxide may be 50 mmHg, in which case the partial pressure of carbon dioxide is already in an abnormal state; or the partial pressure of carbon dioxide may still be in a normal state, so further comprehensive judgment is required.

[0066] If the first deviation value is greater than the risk deviation value, an alarm will be issued, indicating that the CO2 concentration is seriously abnormal and the human body is in an unhealthy state. An alarm can be issued directly, and a comprehensive judgment will be made to determine the state of imbalance in the human body. At this time, there is insufficient alveolar ventilation, and the CO2 produced by the body cannot be expelled from the body in time, or excessive alveolar ventilation, and the expelled CO2 exceeds the amount produced by the body. The degree of carbon dioxide partial pressure imbalance is determined by the comprehensive judgment results.

[0067] This invention assesses alveolar ventilation and respiratory function by evaluating the degree of abnormality of the concentration value relative to the warning concentration range. When the evaluated concentration value is severely abnormal relative to the warning concentration range, exceeding the absolute normal range or indicating a possible abnormality, an alarm is triggered directly. This eliminates the need to further verify the accuracy of the theoretical carbon dioxide partial pressure value determined by the evaluated concentration value in assessing alveolar ventilation and respiratory function, and avoids situations where the theoretical carbon dioxide partial pressure value remains normal while the evaluated concentration value is severely abnormal. By using multi-directional auxiliary theoretical carbon dioxide partial pressure values ​​to assess alveolar ventilation and respiratory function, this invention ensures that medical staff have more precise control over the patient's alveolar ventilation and respiratory function, preventing the failure to detect abnormalities in alveolar ventilation and respiratory function in a timely manner and avoiding missed opportunities for treatment.

[0068] Step S3: In response to the determination that the content is unqualified, the first assessment is determined to be inaccurate based on the actual temperature value, and the evaluation concentration value is re-determined according to the relationship that the first excess value is less than or equal to the risk excess value; wherein, the actual temperature value is determined based on the temperature of the monitoring location, and the first excess value is determined based on the actual temperature value and the warning temperature range;

[0069] Please see Figure 3 The process of redetermining the evaluation concentration value is shown in detail below.

[0070] Specifically, the process of determining that the first assessment is inaccurate based on the actual temperature value includes,

[0071] The accuracy of the first assessment is determined by comparing the actual temperature value with the warning temperature range. If the first assessment is determined to be inaccurate, the first exceedance value is compared with the risk exceedance value. If the first exceedance value is greater than the risk exceedance value, an alarm is triggered.

[0072] Temperature sensor 03 acquires the temperature of the earlobe, determines the actual temperature value, assesses the accuracy of the evaluation, and compares the actual temperature value with the warning temperature range to determine the accuracy of the evaluation; if the actual temperature value... The warning temperature range is accurately assessed; if the actual temperature value... The warning temperature range was inaccurately determined and assessed.

[0073] The solubility of gases in blood is inversely proportional to temperature. Higher temperatures result in lower CO2 solubility and higher partial pressures of free gases in the blood. Within a certain temperature range, CO2 solubility is relatively stable. The warning temperature range, specifically 36.5-37.5℃, is chosen as the warning temperature range for CO2 solubility. At this temperature, CO2 solubility is relatively stable. Therefore, when the actual temperature value... When the warning temperature range is accurately assessed, it indicates that the solubility of the gas in the blood is stable at this temperature, and the evaluation concentration value can fully reflect the alveolar ventilation. At this time, the process of determining the theoretical carbon dioxide partial pressure value based on the CO2 concentration is accurate.

[0074] When the actual temperature value The warning temperature range indicates that the solubility of the gas in the blood is affected by the actual temperature. The evaluated concentration value at this point deviates in assessing the theoretical partial pressure of carbon dioxide, leading to a bias in reflecting alveolar ventilation using the theoretical partial pressure. Therefore, the assessment is inaccurate, indicating that the actual temperature affects the calculation of the theoretical partial pressure of carbon dioxide based on the evaluated concentration value. Thus, the theoretical partial pressure of carbon dioxide needs to be recalculated. For example, if the actual temperature is 38.1℃, which is 1℃ higher than the midpoint of the warning temperature range (37℃), the solubility of the gas in the blood decreases by 3%-5%, taking 4% as an example. The evaluated concentration value measured at this point is a false value, specifically 4.7%. Due to the influence of the actual temperature, the evaluated concentration value needs to be recalculated.

[0075] This invention verifies the theoretical carbon dioxide partial pressure value determined by evaluating concentration values ​​by monitoring the patient's temperature in real time. It validates the effectiveness of the currently acquired evaluation concentration values ​​and avoids using distorted evaluation concentration values ​​to determine the theoretical carbon dioxide partial pressure value for judging alveolar ventilation and respiratory function, even when these values ​​are distorted due to changes in the patient's body temperature. Distorted evaluation concentration values ​​lead to inaccurate and untimely monitoring of the patient's alveolar ventilation and respiratory function, resulting in erroneous judgments about the patient's alveolar ventilation and respiratory function. This invention introduces actual temperature values ​​to correct distorted evaluation concentration values ​​and the theoretical carbon dioxide partial pressure value determined by them. By using multi-source data to verify the accuracy of judging alveolar ventilation and respiratory function using theoretical carbon dioxide partial pressure values, it ensures real-time monitoring of the patient's alveolar ventilation and respiratory function.

[0076] Let the original evaluation concentration value be Qi, and the newly determined evaluation concentration value be Qj, where Qj = Qi + Ki × ΔQ; where ΔQ is the concentration correction difference, and Ki is the first concentration correction coefficient, determined based on the first excess value; in this case, ΔQ is 0.15%. When the evaluation concentration value is less than 4.8%, Ki is negative; when the evaluation concentration value is greater than 5.7%, Ki is positive; in this case, Ki is -1.1; therefore, the evaluation concentration value Qj is 4.7% - 1.1 × 0.15% = 4.54%; and the theoretical carbon dioxide partial pressure value determined from the evaluation concentration value is 4.54% × 760 = 34.5; at this point, the newly determined theoretical carbon dioxide partial pressure value has exceeded the preset partial pressure range, and the partial pressure is judged to be unqualified, triggering an alarm.

[0077] In response to the determination that the first assessment is inaccurate, the first excess value is compared with the risk excess value. Based on the fact that the first excess value is greater than the risk excess value, an alarm is triggered.

[0078] Based on the relationship that the first excess value is less than or equal to the risk excess value, the evaluation concentration value is re-determined according to the first excess value of the actual temperature value relative to the median value of the warning temperature range, wherein the evaluation concentration value is positively correlated with the first excess value;

[0079] Comparing the first excess value with the risk excess value, if the first excess value ≤ the risk excess value, it indicates a deviation in the calculation process of the theoretical carbon dioxide partial pressure value based on the evaluation concentration value, and a comprehensive judgment is required; in this case, the evaluation concentration value should be re-determined. If the first excess value > the risk excess value, it indicates that the evaluation concentration value is severely distorted and needs to be re-determined; it also indicates a serious deviation in the calculation process of the carbon dioxide partial pressure value based on the evaluation concentration value, and the result of determining the theoretical carbon dioxide partial pressure value based on the evaluation concentration value is invalid, and an alarm should be issued directly; the risk excess value is taken as 2, corresponding to the value at 39℃.

[0080] This invention addresses situations where the actual temperature falls outside the warning temperature range, indicating that the assessment of alveolar ventilation and respiratory function based on the theoretical carbon dioxide partial pressure determined by the evaluated concentration value is inaccurate and has already affected the evaluated concentration value. Furthermore, it considers the degree of distortion in assessing alveolar ventilation and respiratory function based on the deviation of the actual temperature value from the warning temperature range. When the actual temperature value significantly deviates from the warning temperature range, it becomes completely unnecessary to continue assessing alveolar ventilation and respiratory function based on the evaluated concentration value, or to directly assess alveolar ventilation and respiratory function based on the evaluated concentration value. This indicates that the previous assessment of alveolar ventilation and respiratory function based on the evaluated concentration value has been completely distorted, and the current actual temperature value deviates significantly. In this case, an alarm is directly triggered to prevent further damage to the patient's alveolar ventilation and respiratory function. This system can detect continuous deterioration in abnormal states, ensuring timely intervention by medical staff and rapid assessment of the patient's current alveolar ventilation and respiratory functions. This effectively prevents the risk of worsening condition due to delayed judgment, improving the timeliness and accuracy of clinical intervention. If the actual temperature deviates from the warning temperature range but does not trigger an alarm, the distorted evaluation concentration value is corrected by the first excess value of the actual temperature relative to the warning temperature range. After correcting the distorted evaluation concentration value, the theoretical carbon dioxide partial pressure value is re-determined to assess alveolar ventilation and respiratory functions, and the re-determined evaluation concentration value is used directly to assess alveolar ventilation and respiratory functions. This ensures accurate assessment of alveolar ventilation and respiratory functions even under the interference of actual temperature values, providing data support for medical staff to assess alveolar ventilation and respiratory functions. It also increases the speed of medical staff response when patients' alveolar ventilation and respiratory functions become abnormal, ensuring the accuracy of real-time monitoring data and the synchronization of clinical response, further reducing the risk of misjudgment and missed diagnosis, and protecting patient safety.

[0081] Step S4: In response to the determination that the content is unqualified, the second assessment is determined to be inaccurate based on the actual standard deviation value. The theoretical carbon dioxide partial pressure value is re-determined based on the relationship that the second deviation value is less than or equal to the second deviation threshold, so as to re-determine the partial pressure qualification. The warning concentration range is re-determined based on the second deviation value. The actual standard deviation value is determined based on the standard deviation of all normal sinus intervals at the monitoring location.

[0082] Specifically, the process of determining the inaccuracy of the second assessment based on the actual standard deviation value includes,

[0083] The accuracy of the second assessment is determined by comparing the actual standard deviation value with the warning standard deviation range; in response to the determination that the second assessment is inaccurate, the second deviation value is compared with the second deviation threshold, and an alarm is triggered based on the second deviation value being greater than the second deviation threshold.

[0084] The HRV analyzer obtains the standard deviation of all normal sinus intervals to determine the actual standard deviation value, assesses the accuracy of the alarm, and compares the actual standard deviation value with the warning standard deviation range to determine the accuracy of the assessment.

[0085] If the actual standard deviation value If the warning standard deviation range is met, the second assessment is deemed accurate; if the actual standard deviation value is within the range, the second assessment is deemed accurate. If the warning standard deviation is within a certain range, then the second assessment is deemed inaccurate.

[0086] In evaluating concentration values When the concentration falls outside the warning range, it indicates that the partial pressure of carbon dioxide may be abnormal. In this case, the theoretical partial pressure of carbon dioxide fluctuates. For example, in hypercapnia, this leads to deeper and faster breathing, increased ventilation, and stimulation of the sympathetic nervous system through mechanisms such as the pulmonary expansion reflex. High CO2 levels under sympathetic nervous system stimulation can indirectly cause catecholamine release, leading to increased heart rate and reduced overall heart rate variability. Sympathetic dominance reduces normal variability between heartbeats, thus lowering the actual standard deviation. In this situation, the actual standard deviation should be outside the warning range.

[0087] Therefore, if the actual standard deviation value at this time The warning standard deviation range can be used to determine the accuracy of the second assessment based on the actual standard deviation value. At this point, the calculated theoretical carbon dioxide partial pressure value of the evaluation concentration value can accurately reflect the alveolar ventilation status. The warning standard deviation range is determined based on the corresponding carbon dioxide partial pressure.

[0088] If the actual standard deviation at this time A warning standard deviation range indicates that the second assessment is inaccurate. This suggests that the theoretical carbon dioxide partial pressure (PCP) value, calculated based on the evaluation concentration, may not accurately reflect alveolar ventilation. In this case, the theoretical PCP value needs to be recalculated. For example, for a 20-year-old, 175cm, 70kg male, a warning standard deviation range of 160-170ms corresponds to good alveolar ventilation under good PCP conditions. If the actual standard deviation is within 160-170ms, the second assessment is considered accurate. In cases of hypercapnia, if the theoretical PCP is 44, an actual standard deviation less than 160ms indicates an accurate second assessment. In this case, the warning standard deviation range is 130-140. If the actual standard deviation falls within this range, the second assessment is considered accurate. For newborns, the warning standard deviation range is 70-80; for children aged 1-3 years, it is 110-120; for adolescents, it is 160-170; and for the elderly, it is 40-50.

[0089] This invention, when the theoretical carbon dioxide partial pressure value does not trigger an alarm but approaches an anomaly, determines the current actual standard deviation value by combining the warning standard deviation range corresponding to the current theoretical carbon dioxide partial pressure value. This verifies the accuracy of determining the theoretical carbon dioxide partial pressure value based on the evaluated concentration value for assessing alveolar ventilation and respiratory function, further improving the multidimensionality of alveolar ventilation and respiratory function assessment. This allows for a more refined assessment of alveolar ventilation and respiratory function. Without the assistance of the actual standard deviation value in assessing alveolar ventilation and respiratory function, distortions in the evaluated concentration value may go undetected, leading to simultaneous distortions in the theoretical carbon dioxide partial pressure value. In cases where it is impossible to accurately assess the actual alveolar ventilation and respiratory function of patients, and the deviation of the actual standard deviation value from the warning standard deviation range is insufficient to trigger an alarm, the theoretical carbon dioxide partial pressure value determined by the evaluation concentration value is corrected based on the deviation of the actual standard deviation value from the warning standard deviation range. This ensures that the accurate theoretical carbon dioxide partial pressure value determined after coupling multiple parameters and multiple data is used to assess alveolar ventilation and respiratory function, thereby ensuring that medical staff have a full understanding of the patient's current alveolar ventilation and respiratory function status and increasing the accuracy of assessing alveolar ventilation and respiratory function through evaluation concentration values ​​and theoretical carbon dioxide partial pressure values.

[0090] In response to the determination that the second assessment is inaccurate, the theoretical carbon dioxide partial pressure value is re-determined based on the second deviation value of the actual standard deviation value relative to the median of the warning standard deviation range. For example, when the theoretical carbon dioxide partial pressure value is 44, the corresponding warning standard deviation range is 130-140. Taking a 20-year-old, 175cm, 70kg male as an example, for different monitoring subjects, the corresponding warning standard deviation range can be determined based on the arterial blood gas analysis data monitored in previous cases and the data corresponding to the carbon dioxide partial pressure value monitored by the percutaneous PtcCO2 detection device. At this time, the median of the warning standard deviation range is 135. If the actual standard deviation value is 105, the second deviation value is 30. If the actual standard deviation value is 175, the second deviation value is 40.

[0091] Compare the second deviation value with the second deviation threshold to determine the relationship between the second deviation value and the second deviation threshold;

[0092] If the second deviation value is less than or equal to the second deviation threshold, it indicates that there is a deviation in the process of determining the theoretical carbon dioxide partial pressure value through the evaluation concentration value. There is a possibility that the theoretical carbon dioxide partial pressure value is outside the normal range. It is necessary to redetermine the theoretical carbon dioxide partial pressure value by combining the evaluation concentration value with the actual standard deviation value, and further comprehensively evaluate the compliance of the partial pressure. The warning concentration range should be redefined to reduce the margin of the warning concentration range on the evaluation concentration value. This is to avoid the theoretical carbon dioxide partial pressure value determined directly by the evaluation concentration value being seriously deviated from the true value when the actual standard deviation value has not corrected the theoretical carbon dioxide partial pressure value, and to avoid the situation where alveolar ventilation is already seriously abnormal.

[0093] Specifically, in response to redetermining the warning concentration range, the boundary of the adjusted warning concentration range is determined based on the direction of deviation of the actual standard deviation value relative to the warning standard deviation range; wherein, the boundary includes the peak and valley values ​​of the adjusted warning concentration range.

[0094] Specifically, in response to adjusting the boundary of the warning concentration range, the warning concentration range is redefined based on the boundary adjustment amount corresponding to the second deviation value, wherein the boundary adjustment amount is positively correlated with the second deviation value.

[0095] During the process of re-determining the warning concentration range, adjustments are made based on the direction of deviation of the second deviation value. If the theoretical carbon dioxide partial pressure is 44 and the actual standard deviation is 145, then the second deviation value is 10, and the re-determined warning concentration range is 4.8%-5.6%. If the actual standard deviation is 155, then the re-determined warning concentration range is 4.8%-5.5%.

[0096] At this point, it is necessary to redetermine the partial pressure correction value to redetermine the theoretical carbon dioxide partial pressure value. The theoretical carbon dioxide partial pressure value = evaluation concentration value × 760 + ΔP; where ΔP is the partial pressure correction value; wherein, the partial pressure correction value is positively correlated with the second deviation value; for example, when the second deviation value is 30, ΔP = 30 × Kj, where Kj is the partial pressure correction coefficient, and at this time ΔP = 30 × 0.2 = 6; when the second deviation value is 20, ΔP = 20 × 0.18 = 3.6;

[0097] If the evaluated concentration is 5.8% and the actual standard deviation is 165, then the theoretical carbon dioxide partial pressure is calculated as follows: evaluated concentration × 760 + ΔP; theoretical carbon dioxide partial pressure = 5.8% × 760 + 6 = 50.08.

[0098] If the second deviation value is greater than the second deviation threshold, it indicates that there is a serious deviation in the process of determining the theoretical carbon dioxide partial pressure value by evaluating the concentration value. The result of determining the theoretical carbon dioxide partial pressure value by evaluating the concentration value is invalid, and an alarm should be issued directly. The second deviation threshold is 30, that is, when the theoretical carbon dioxide partial pressure value is 44, the warning standard deviation range is 130-140. If the actual standard deviation value is not within 100-170ms, it indicates that the uncorrected theoretical carbon dioxide partial pressure value obtained directly by evaluating the concentration value has been seriously distorted and cannot accurately reflect the current alveolar ventilation. Therefore, an alarm should be issued directly.

[0099] This invention issues an alarm when the theoretical carbon dioxide partial pressure value, determined directly from the evaluation concentration value, deviates significantly from the actual value. This alerts medical staff to immediately assess the patient's alveolar ventilation and respiratory function, preventing the failure to detect inaccurate theoretical carbon dioxide partial pressure values ​​and thus avoiding undetected abnormalities in alveolar ventilation and respiratory function. Furthermore, even when the actual deviation does not deviate from the warning range to trigger the alarm, a partial pressure correction value is introduced to correct the accuracy of the theoretical carbon dioxide partial pressure value determined from the evaluation concentration value. This ensures that the theoretical carbon dioxide partial pressure value accurately reflects the patient's alveolar ventilation and respiratory function, increasing the accuracy of real-time monitoring of carbon dioxide partial pressure and the accuracy of assessing alveolar ventilation and respiratory function. This provides medical staff with more reliable decision-making information, effectively reducing the risk of clinical misjudgment and improving the quality and safety of patient monitoring.

[0100] Specifically, in response to the redetering of the theoretical carbon dioxide partial pressure value, the theoretical carbon dioxide partial pressure value is re-determined based on the partial pressure correction value set corresponding to the second deviation value, wherein the partial pressure correction value is positively correlated with the second deviation value. If the evaluation concentration value is 5.8% and the actual standard deviation value is 165, then the theoretical carbon dioxide partial pressure value at this time = evaluation concentration value × 760 + ΔP; theoretical carbon dioxide partial pressure value = 5.8% × 760 + 6 = 50.08;

[0101] Specifically, the partial pressure correction value is determined based on the second deviation value and the partial pressure correction coefficient, wherein the partial pressure correction coefficient is positively correlated with the second deviation value. At this point, the partial pressure correction value needs to be re-determined to re-determine the theoretical carbon dioxide partial pressure value, which is calculated as: Theoretical carbon dioxide partial pressure value = Evaluation concentration value × 760 + ΔP; where ΔP is the partial pressure correction value; and the partial pressure correction value is positively correlated with the second deviation value. For example, when the second deviation value is 30, ΔP = 30 × Kj, where Kj is the partial pressure correction coefficient, and ΔP = 30 × 0.2 = 6; when the second deviation value is 20, ΔP = 20 × 0.18 = 3.6.

[0102] The theoretical partial pressure of carbon dioxide is determined based on the evaluated concentration value, actual temperature value, and actual standard deviation value. For example, if the current evaluated concentration value is 5.8%, the actual temperature value is 38℃, and the actual standard deviation value is 165ms, then the initially determined theoretical partial pressure of carbon dioxide is 5.8% × 760 = 44.08. At this time, the theoretical partial pressure of carbon dioxide is within the preset partial pressure range, and the partial pressure is deemed qualified. However, the evaluated concentration value of 5.8% exceeds the warning concentration range but does not reach the alarm triggering condition. At this time, the actual temperature value of 38℃ exceeds the warning temperature range but does not reach the alarm triggering condition. The actual standard deviation value of 165ms has already affected the process of determining the theoretical partial pressure of carbon dioxide through the evaluated concentration value. Therefore, it is necessary to re-determine the theoretical partial pressure of carbon dioxide. At this time, the re-determined theoretical partial pressure of carbon dioxide is (5.8% + 1.1 × 0.15%) × 760 + 30 × 0.2 = 51.33. At this time, the theoretical partial pressure of carbon dioxide is not within the preset partial pressure range, and the partial pressure is deemed unqualified, and an alarm is issued.

[0103] This invention dynamically corrects the theoretical carbon dioxide partial pressure value, introducing corresponding correction values ​​for different degrees of deviation to ensure the accuracy of the corrected theoretical carbon dioxide partial pressure value. It provides precise adaptation to the monitoring needs of different individuals and physiological states, further improving the accuracy of alveolar ventilation and respiratory function assessment. It can acquire carbon dioxide concentration, theoretical carbon dioxide partial pressure, actual temperature, and actual standard deviation in real time, enabling a comprehensive, real-time, multi-directional assessment of alveolar ventilation and respiratory function. Compared to arterial blood gas analysis, it does not require arterial puncture or placement, and can acquire data in real time, allowing for the assessment of a patient's alveolar ventilation function based on the data. This device monitors the patient's alveolar ventilation and respiratory function without interruption, allowing for more precise control over these functions. Compared to percutaneous PtcCO2 detection devices, it eliminates the need for skin heating, ensuring real-time acquisition of carbon dioxide concentration, theoretical partial pressure, actual temperature, and actual standard deviation. This enables a comprehensive, real-time, multi-directional assessment of alveolar ventilation and respiratory function. Furthermore, it monitors blood perfusion in real-time using a perfusion sensor, assisting doctors in assessing the patient's alveolar ventilation and respiratory function. Therefore, it allows for more precise control over the patient's alveolar ventilation and respiratory function.

[0104] This embodiment also provides an ear clip for monitoring carbon dioxide partial pressure, used in the aforementioned non-invasive intelligent monitoring method for carbon dioxide partial pressure. It includes an ear clip body 01, a near-infrared sensor 02 for acquiring carbon dioxide concentration, a temperature sensor 03 for acquiring the actual temperature value at the monitoring location, and a blood perfusion sensor 04 for compensating for environmental and individual differences. The ear clip body 01 adopts a flexible clamping structure to increase comfort during long-term wear and avoid local blood circulation obstruction or skin pressure injury due to excessive clamping. The near-infrared sensor 02 and temperature sensor 03 are integrated inside the ear clip to ensure close contact with the earlobe tissue and improve signal acquisition stability. The blood perfusion sensor 04 is used to monitor the blood perfusion status at the monitoring location in real time, outputting data to assist medical personnel in assessing the patient's current condition.

[0105] This invention utilizes a portable ear clip to non-invasively acquire partial pressure of carbon dioxide (PaCO2) from multiple dimensions and data points, enabling a comprehensive and accurate assessment of alveolar ventilation and respiratory function. Compared to traditional methods relying on arterial blood gas analysis to obtain PaCO2 values, this invention eliminates the need for arterial puncture or placement, thus avoiding increased risks of infection and hematoma. Furthermore, it allows for real-time monitoring of PaCO2, reducing the technical complexity of obtaining this data. This provides a faster, more convenient, non-invasive, and real-time method for acquiring PaCO2 values, providing data support for healthcare professionals to monitor patients' alveolar ventilation and respiratory function in real time. It also promptly triggers alarms when PaCO2 values ​​are abnormal, quickly notifying healthcare professionals to conduct further examinations and preventing more serious complications arising from undetected abnormalities in alveolar ventilation and respiratory function. Furthermore, it can wirelessly transmit monitoring data in real time to medical monitoring systems or other cloud platforms, such as mobile phones and other portable devices, allowing medical staff to view data reflecting the patient's alveolar ventilation and respiratory functions at any time. This achieves an organic combination of remote monitoring and intelligent early warning. By continuously collecting carbon dioxide concentration, temperature, and hemodynamic parameters in the ear microcirculation, and combining them with a multi-parameter dynamic model to calculate the arterial blood carbon dioxide partial pressure in real time, it effectively eliminates measurement deviations caused by individual differences and environmental interference, achieving high-precision non-invasive monitoring. It can also obtain other data through the medical monitoring system to assess the patient's alveolar ventilation and respiratory functions from a more comprehensive perspective, increasing the assessment dimensions of the patient's alveolar ventilation and respiratory functions, and improving the timeliness and accuracy of clinical intervention.

[0106] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A non-invasive intelligent monitoring method for carbon dioxide partial pressure, characterized in that, include, Obtain the concentration of dissolved carbon dioxide in the gas phase at the monitoring location, determine the theoretical partial pressure of carbon dioxide, and determine the alarm based on the theoretical partial pressure value if the partial pressure is unqualified. The alarm status is determined based on the relationship between the first deviation value and the risk deviation value, according to the judgment result of the non-compliance of the evaluation concentration value; wherein, the evaluation concentration value is determined based on the carbon dioxide concentration, and the first deviation value is determined based on the evaluation concentration value and the warning concentration range; In response to the determination that the content is unqualified, the first assessment is determined to be inaccurate based on the actual temperature value. The evaluation concentration value is re-determined according to the relationship that the first excess value is less than or equal to the risk excess value. The actual temperature value is determined based on the temperature at the monitoring location, and the first excess value is determined based on the actual temperature value and the warning temperature range. In response to the determination that the content is unqualified, the second assessment is determined to be inaccurate based on the actual standard deviation value. The theoretical carbon dioxide partial pressure value is re-determined based on the relationship that the second deviation value is less than or equal to the second deviation threshold, so as to re-determine the partial pressure qualification. The warning concentration range is re-determined based on the second deviation value. The actual standard deviation value is determined based on the standard deviation of all normal sinus intervals at the monitoring location.

2. The non-invasive intelligent monitoring method for carbon dioxide partial pressure according to claim 1, characterized in that, The process for determining that the partial pressure is unqualified includes, Compare the theoretical partial pressure of carbon dioxide with the preset partial pressure range to determine the qualification of the partial pressure; In response to the determination that the partial pressure is unqualified, an alarm is triggered; wherein, the theoretical carbon dioxide partial pressure value is determined based on the evaluation concentration value.

3. The non-invasive intelligent monitoring method for carbon dioxide partial pressure according to claim 1, characterized in that, The process for determining whether the content is substandard includes: Compare and evaluate the concentration value with the warning concentration range to determine the compliance of the content; In response to the determination that the content is unqualified, the first deviation value is compared with the risk deviation value, and an alarm is triggered based on the relationship that the first deviation value is greater than the risk deviation value.

4. The non-invasive intelligent monitoring method for carbon dioxide partial pressure according to claim 1, characterized in that, The process of determining that the first assessment is inaccurate based on the actual temperature value includes: Compare the actual temperature value with the warning temperature range to determine the accuracy of the first assessment; In response to the determination that the first assessment is inaccurate, the first excess value is compared with the risk excess value. Based on the fact that the first excess value is greater than the risk excess value, an alarm is triggered.

5. The non-invasive intelligent monitoring method for carbon dioxide partial pressure according to claim 1, characterized in that, The process of determining the inaccuracy of the second assessment based on the actual standard deviation value includes: Compare the actual standard deviation value with the warning standard deviation range to determine the accuracy of the second assessment; In response to the determination that the second assessment is inaccurate, the second deviation value is compared with the second deviation threshold. Based on the fact that the second deviation value is greater than the second deviation threshold, an alarm is triggered.

6. The non-invasive intelligent monitoring method for carbon dioxide partial pressure according to claim 1, characterized in that, In response to redetermining the warning concentration range, the boundary of the adjusted warning concentration range is determined based on the direction of deviation of the actual standard deviation value relative to the warning standard deviation range; wherein, the boundary includes the peak and valley values ​​of the adjusted warning concentration range.

7. The non-invasive intelligent monitoring method for carbon dioxide partial pressure according to claim 1, characterized in that, In response to adjusting the boundary of the warning concentration range, the warning concentration range is redefined based on the boundary adjustment amount corresponding to the second deviation value, wherein the boundary adjustment amount is positively correlated with the second deviation value.

8. The non-invasive intelligent monitoring method for carbon dioxide partial pressure according to claim 1, characterized in that, In response to the redetering of the theoretical carbon dioxide partial pressure value, the theoretical carbon dioxide partial pressure value is redetering according to the partial pressure correction value set corresponding to the second deviation value, wherein the partial pressure correction value is positively correlated with the second deviation value.

9. The non-invasive intelligent monitoring method for carbon dioxide partial pressure according to claim 8, characterized in that, The partial voltage correction value is determined based on the second deviation value and the partial voltage correction coefficient, wherein the partial voltage correction coefficient is positively correlated with the second deviation value.

10. An ear clip for monitoring carbon dioxide partial pressure using the non-invasive carbon dioxide partial pressure intelligent monitoring method according to any one of claims 1-9, characterized in that, It includes an ear clip body, a near-infrared sensor built into the ear clip body for acquiring carbon dioxide concentration, a temperature sensor for acquiring the actual temperature value of the monitoring location, and a blood perfusion sensor for compensating for environmental and individual differences.

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