An inhalation anaesthetic concentration monitoring and regulation system

Abstract

A system for monitoring and regulating the concentration of inhaled anesthetics, belonging to the field of data processing and intelligent control technology applied to clinical anesthesia, includes: an anesthetic concentration regulation module, installed in the anesthesia machine, for regulating the concentration of anesthetic output by the anesthesia machine; a metabolic information acquisition module, for collecting metabolic information of the anesthetized subject regarding the inhaled anesthetic; and a control module, communicatively interconnected with both the metabolic information acquisition module and the anesthetic concentration regulation module, recording and processing the metabolic information of the anesthetized subject regarding the inhaled anesthetic collected by the metabolic information acquisition module, and controlling the operation of the anesthetic concentration regulation module based on the metabolic information to regulate the concentration of anesthetic output by the anesthesia machine. This system, through the integration and interaction of the metabolic information acquisition module and the anesthetic concentration regulation module, enables intervention guidance based on the metabolic information of the anesthetized subject in controlling the dosage of anesthetics during inhalation anesthesia, thereby improving the accuracy of inhaled anesthetic dosage control.

Description

Technical Field

[0001] This invention belongs to the field of data processing and intelligent control technology applied to clinical anesthesia, specifically relating to an inhaled anesthetic concentration monitoring and adjustment system. Background Technology

[0002] Inhalation anesthesia is a commonly used method in clinical practice. Precisely controlling the dosage of inhaled anesthetics according to surgical needs is crucial, but this experience varies among physicians, and the effectiveness of control is inconsistent due to individual patient metabolic differences. Previously, clinical practice primarily relied on blood tests to determine anesthetic concentrations and metabolism. Later, exhaled breath anesthetic concentration monitoring was developed. However, regardless of the method, its clinical significance mainly lies in detecting the depth of anesthesia and post-anesthesia monitoring. Regarding the dynamic adjustment of anesthetic concentrations during inhalation anesthesia, existing predictive models based on physical signs and respiratory behavior are too theoretical and have not completely replaced experience as the primary clinical basis. Summary of the Invention

[0003] Based on the background technology, this invention proposes an inhaled anesthetic concentration monitoring and regulation system. By integrating and interacting with a metabolic information acquisition module and an anesthetic concentration regulation module, the system enables the intervention and guidance of the metabolic information of the anesthetic subject to control and regulate the dosage of anesthetics during the inhaled anesthesia stage, thereby improving the accuracy of inhaled anesthetic dosage control.

[0004] The technical solution of the present invention is as follows:

[0005] A system for monitoring and regulating the concentration of an inhaled anesthetic, characterized in that it comprises:

[0006] An anesthetic concentration adjustment module is installed in the anesthesia machine and is used to adjust the concentration of the anesthetic output by the anesthesia machine.

[0007] A metabolic information acquisition module, which is used to collect metabolic information of the anesthetized subject on inhaled anesthetics;

[0008] The control module is interconnected with both the metabolic information acquisition module and the anesthetic concentration adjustment module. It records and processes the metabolic information of the anesthetic subject to the inhaled anesthetic collected by the metabolic information acquisition module, and controls the operation of the anesthetic concentration adjustment module based on the metabolic information to adjust the concentration of the anesthetic output by the anesthesia machine.

[0009] Furthermore, in the aforementioned inhaled anesthetic concentration monitoring and adjustment system, the metabolic information of the anesthetic subject to the inhaled anesthetic is metabolic rate information.

[0010] Furthermore, in the aforementioned inhaled anesthetic concentration monitoring and adjustment system, the metabolic information acquisition module is an exhaled anesthetic concentration monitoring component.

[0011] Furthermore, in the aforementioned inhaled anesthetic concentration monitoring and adjustment system, the metabolic rate information is derived based on the change in anesthetic concentration information over metabolic time monitored by the exhaled anesthetic concentration monitoring component.

[0012] Furthermore, in the aforementioned inhaled anesthetic concentration monitoring and adjustment system, the control module is an anesthesia machine controller.

[0013] Furthermore, in the aforementioned inhaled anesthetic concentration monitoring and adjustment system, the control module is an independent controller that is communicatively interconnected with the anesthesia machine and the metabolic information acquisition module.

[0014] Furthermore, in the aforementioned inhaled anesthetic concentration monitoring and adjustment system, the anesthesia machine is an vaporizer-type anesthesia machine.

[0015] Furthermore, in the aforementioned inhaled anesthetic concentration monitoring and adjustment system, the exhaled anesthetic concentration monitoring component is a flash vaporization gas phase detection component.

[0016] Furthermore, in the aforementioned inhaled anesthetic concentration monitoring and adjustment system, the control module adjusts the anesthetic concentration output by the anesthesia machine by changing only the anesthetic concentration value output by the anesthesia machine, or by simultaneously changing the anesthetic concentration value output by the anesthesia machine and the system-preset inhalation time. Preferably, the adjustment of the anesthetic concentration output by the anesthesia machine is dynamic.

[0017] Furthermore, the aforementioned inhaled anesthetic concentration monitoring and adjustment system also includes an early warning module, which is used to verify the matching ability between the actual metabolic information of the anesthetized patient during surgery and the expected control.

[0018] The present invention can achieve the following technical effects:

[0019] The inhaled anesthetic concentration monitoring and adjustment system provided by this invention, through communication interconnection between the control module, the metabolic information acquisition module, and the anesthetic concentration adjustment module, records and processes the metabolic information of the anesthetized subject on the inhaled anesthetic collected by the metabolic information acquisition module. Based on this metabolic information, it controls the operation of the anesthetic concentration adjustment module to adjust the concentration of anesthetic output from the anesthesia machine. This enables intervention guidance based on the metabolic information of the anesthetized subject to control the dosage of anesthetic during the inhaled anesthesia stage, improving the accuracy of inhaled anesthetic dosage control. In particular, the control module can not only adjust the concentration of anesthetic output from the anesthesia machine based on the metabolic information of the same anesthetized subject, but also further combine the scientific matching of physical signs and symptoms to achieve clinical guidance between different anesthetized subjects. This is of great significance in alleviating the current situation of unstable anesthetic effects caused by differences in doctors' experience and the lack of scientific accuracy of existing theoretical prediction models. Attached Figure Description

[0020] Figure 1 The principle of the inhaled anesthetic concentration monitoring and adjustment system provided in Embodiment 1 of the present invention is as follows.

[0021] Figure 2 The principle of another inhaled anesthetic concentration monitoring and adjustment system provided in Embodiment 1 of the present invention.

[0022] Figure 3 The principle of the inhaled anesthetic concentration monitoring and adjustment system provided in Embodiment 2 of the present invention is as follows.

[0023] The components represented by the reference numerals in the attached figures are:

[0024] 1—Anesthesia machine. Detailed Implementation

[0025] Example 1

[0026] like Figure 1 As shown, the inhaled anesthetic concentration monitoring and adjustment system of this embodiment includes an anesthetic concentration adjustment module, a metabolic information acquisition module, and a control module.

[0027] The anesthetic concentration adjustment module is located in the anesthesia machine and is used to adjust the concentration of the anesthetic output by the anesthesia machine. It is the anesthetic concentration adjustment module used by the main unit of the anesthesia machine itself. It can adjust the concentration of the output anesthetic based on the valve control adjustment method of the anesthetic gas flow of the existing vaporizer anesthesia machine.

[0028] The metabolic information acquisition module is an additional functional module integrated into the anesthesia machine host. It is used to collect the metabolic information of the anesthetized subject to inhaled anesthetics. The metabolic information referred to here is metabolic rate information. The metabolic rate can reflect the relationship between the depth of anesthesia and the effective anesthesia time. Collecting the metabolic rate information of the anesthetized subject to inhaled anesthetics in advance can provide a scientific basis for controlling and adjusting the dosage of anesthetics during the inhalation anesthesia stage.

[0029] The metabolic rate information of anesthetics can be derived from the change of anesthetic concentration information with metabolic time. Therefore, as an innovative functional extension of the principle of existing exhaled anesthetic concentration monitoring devices, the metabolic information acquisition module uses the core module of the exhaled anesthetic concentration monitoring component as the working module. Thus, the metabolic rate information of anesthetics in this embodiment is derived from the change of anesthetic concentration information with metabolic time monitored by the core module of the exhaled anesthetic concentration monitoring component. The exhaled anesthetic concentration monitoring component used can be the flash vapor phase detection component that is currently used in clinical practice.

[0030] In this embodiment, the control module is interconnected with the metabolic information acquisition module and the anesthetic concentration adjustment module. It records and processes the metabolic information of the anesthetic subject to the inhaled anesthetic collected by the metabolic information acquisition module, and controls the operation of the anesthetic concentration adjustment module based on the metabolic information to adjust the concentration of the anesthetic output by the anesthesia machine.

[0031] The concentration of anesthetic agent output by the anesthesia machine is preferably adjusted dynamically.

[0032] The control module in this embodiment can achieve the above new functions by upgrading and modifying the main control module of the anesthesia machine. Figure 1 In the system structure shown, the anesthetic concentration adjustment module and the control module are both represented as the corresponding basic modules of the anesthesia machine host. In this case, the control module is the anesthesia machine controller.

[0033] In another implementation, the control module may also be an independent controller that communicates and interconnects with the anesthesia machine and the metabolic information acquisition module.

[0034] In this embodiment of the invention, the control module establishes basic metabolic rate data corresponding to a specific anesthesia subject by recording and processing the metabolic information of the inhaled anesthetic collected by the metabolic information acquisition module. For example, it can be recorded as a function relationship including time T. In a repeat inhaled anesthesia operation for the same anesthesia subject, the control module can retrieve the corresponding basic metabolic rate data according to the anesthesia subject's identity information matched by the system. Based on this basic metabolic rate data, it can automatically recommend an anesthetic concentration parameter (which can be an adjustment curve) corresponding to the current surgical settings (duration T1, where T1 may be equal to or different from the aforementioned time T). This is more targeted and scientific than the anesthetic concentration parameter defaulted by the system or adjusted by the doctor based on experience. The inhaled anesthesia process can then be performed directly using the system-recommended anesthetic concentration parameter, or it can be performed after manually intervening and adjusting the anesthetic concentration parameter. The control module can adjust the anesthetic concentration output by the anesthesia machine by simply changing the anesthetic concentration value output by the anesthesia machine, or by simultaneously changing the anesthetic concentration value output by the anesthesia machine and the system-preset inhalation time. It should be noted that during the anesthesia process, the system's original monitoring activities for basic indicators such as heart rate, blood pressure, and EEG index are not replaced, but continue to play a monitoring and early warning role as real-time indicators.

[0035] If the patient undergoing inhalation anesthesia is not a patient with pre-stored metabolic rate data, the monitoring and adjustment system developed in this invention can also provide an approximate matching function for the patient, thereby adjusting the concentration of anesthetic output by the anesthesia machine based on the metabolic information of different patients. This approximate matching function can be based on the patient's physical signs or physical signs combined with symptoms. That is, when the patient undergoing inhalation anesthesia is matched with the basic metabolic rate data of a patient whose basic metabolic rate data is the same as one or more physical signs or physical signs combined with symptoms entered into the system, the system automatically recommends an anesthetic concentration parameter corresponding to the current surgical settings based on this basic metabolic rate data. Similarly, the inhalation anesthesia process can then be performed directly using the anesthetic concentration parameter recommended by the system, or the inhalation anesthesia process can be performed after manually intervening and adjusting the anesthetic concentration parameter. It can be understood that the more physical signs or physical signs combined with symptoms that are matched, the more meaningful the matching effect will be. If the anesthetic concentration parameter automatically recommended by the system directly exceeds the preset anesthetic concentration range for the current patient, the doctor needs to make necessary selections and interventions based on experience.

[0036] It should be noted that the "physical signs" mentioned above include, but are not limited to, the gender, weight, and age of the anesthetized subject, while "symptoms" can be clinical diagnostic information corresponding to the anesthetized subject. The clinical diagnostic information is marked in the system according to its correlation with anesthetic drug metabolism. Clinical diagnostic information that is not related to or is weakly related to anesthetic drug metabolism is excluded from the query matching range.

[0037] Example 2

[0038] like Figure 3 As shown, Example 2 adds an early warning module to the inhaled anesthetic concentration monitoring and adjustment system described in Example 1. This early warning module verifies the matching ability between the actual metabolic information of the anesthetized patient during surgery and the expected control, thereby reducing potential uncertainties in the present invention. The early warning module functions as follows: After the inhaled anesthesia phase ends (during surgery), the control module uses the metabolic information acquisition module to collect the anesthetized patient's metabolic information on the inhaled anesthetic again and compares it with the metabolic information used as the basis for controlling and adjusting the anesthetic dosage during the inhaled anesthesia phase. If a significant difference exists between the metabolic information before and after the inhalation, an early warning is issued through the early warning module. For example, if the metabolic rate information before and after is recorded as a curve relationship between the anesthetic concentration information monitored by the exhaled anesthetic concentration monitoring component and metabolic time, then the anesthetic concentration information at multiple randomly selected same time points on the two curves is used as comparison data. When the difference between the comparison data exceeds a certain threshold, it is considered that a significant difference exists between the metabolic information before and after the inhalation, and the system issues an early warning through the early warning module for the doctor's reference.

[0039] Because the form of the alert is optional, such as a visual alert on the screen or a visual alert combined with an audible alarm, therefore, as Figure 3 As shown, the preferred control module itself has this early warning module, which further facilitates system upgrades and modifications.

[0040] In summary, the inhaled anesthetic concentration monitoring and adjustment system provided in the embodiments of the present invention, through communication interconnection between the control module, the metabolic information acquisition module, and the anesthetic concentration adjustment module, records and processes the metabolic information of the anesthetized subject on the inhaled anesthetic collected by the metabolic information acquisition module, and controls the operation of the anesthetic concentration adjustment module based on this metabolic information to adjust the concentration of anesthetic output by the anesthesia machine. This enables intervention guidance on the control and adjustment of anesthetic dosage during the inhaled anesthesia stage based on the metabolic information of the anesthetized subject, which is more reliable than the currently used purely theoretical models. This improves the accuracy of inhaled anesthetic dosage control and can serve as a primary clinical basis. It can also be used in conjunction with the system's existing theoretical model of anesthetic concentration. In particular, the control module can not only adjust the concentration of anesthetic output by the anesthesia machine based on the metabolic information of the same anesthetized subject, but also further combine the scientific matching of physical signs and symptoms to achieve clinical guidance between different anesthetized subjects. This is of great significance in alleviating the current situation of unstable anesthetic effects caused by differences in doctors' experience and the lack of scientific accuracy of existing theoretical prediction models.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention is determined by the claims.

Claims

1. A system for monitoring and adjusting the concentration of an inhaled anesthetic, characterized in that, include: An anesthetic concentration adjustment module is installed in the anesthesia machine and is used to adjust the concentration of the anesthetic output by the anesthesia machine. A metabolic information acquisition module, which is used to collect metabolic information of the anesthetized subject on inhaled anesthetics; The control module is interconnected with both the metabolic information acquisition module and the anesthetic concentration adjustment module. It records and processes the metabolic information of the anesthetic subject to the inhaled anesthetic collected by the metabolic information acquisition module, and controls the operation of the anesthetic concentration adjustment module based on the metabolic information to dynamically adjust the concentration of the anesthetic output by the anesthesia machine. The metabolic information of the anesthetic subject to the inhaled anesthetic is metabolic rate information; the metabolic information acquisition module is an exhaled anesthetic concentration monitoring component; the metabolic rate information is derived based on the change of anesthetic concentration information monitored by the exhaled anesthetic concentration monitoring component over time. The control module establishes basic metabolic rate data corresponding to a specific anesthesia subject by recording and processing the metabolic information of the specific anesthesia subject collected by the metabolic information acquisition module. This data is recorded as a function of time T. In the re-inhalation anesthesia operation for the same anesthesia subject, the control module retrieves the corresponding basic metabolic rate data based on the anesthesia subject identity information matched by the system. Based on this basic metabolic rate data, the control module automatically recommends the anesthetic concentration parameters corresponding to the current surgical settings. It also includes an early warning module, which is used to verify the matching ability between the actual metabolic information of the anesthetized subject during surgery and the control expectation. After the inhalation anesthesia stage ends, the control module uses the metabolic information acquisition module to collect the metabolic information of the anesthetized subject on the inhalation anesthetic again, and compares it with the metabolic information used as the basis for controlling and adjusting the dosage of anesthetic during the inhalation anesthesia stage. When there is a large difference in the metabolic information before and after, the early warning module issues an early warning. Furthermore, the metabolic rate information before and after is recorded as a curve relationship between the anesthetic concentration information monitored by the exhaled anesthetic concentration monitoring component and the metabolic time. The anesthetic concentration information at multiple identical time points of the two curves is used as comparison data. When the difference between the comparison data exceeds a certain threshold, it is considered that there is a large difference in the metabolic information before and after, and the system issues an early warning through the early warning module.

2. The inhaled anesthetic concentration monitoring and adjustment system according to claim 1, characterized in that, The control module is an anesthesia machine controller.

3. The inhaled anesthetic concentration monitoring and adjustment system according to claim 1, characterized in that, The control module is an independent controller that communicates and interconnects with the anesthesia machine and the metabolic information acquisition module.

4. The inhaled anesthetic concentration monitoring and adjustment system according to claim 1, characterized in that, The anesthesia machine mentioned is an evaporator-type anesthesia machine.

5. The inhaled anesthetic concentration monitoring and adjustment system according to claim 1, characterized in that, The exhaled anesthetic concentration monitoring component is a flash vapor phase detection component.

6. The inhaled anesthetic concentration monitoring and adjustment system according to claim 1, characterized in that, The control module adjusts the concentration of the anesthetic output by the anesthesia machine by changing only the concentration value of the anesthetic output by the anesthesia machine, or by changing both the concentration value of the anesthetic output by the anesthesia machine and the system's preset inhalation time.

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