Mechanical ventilation control method and device for ventilator, ventilator and medium

Abstract

The present invention relates to the technical field of ventilators, and discloses a method for controlling mechanical ventilation of a ventilator, comprising: performing continuous positive pressure ventilation operation on a target object according to acquired positive pressure ventilation parameters; controlling the ventilator to operate in mechanical ventilation mode when the tolerance test fails; performing oxygenation management on the target object to obtain an oxygenation management result; when the oxygenation management result indicates that the blood oxygen saturation is within a preset blood oxygen range, performing pH detection on the target object to obtain a pH detection result; when the pH detection result indicates that it is within the preset pH range, performing inhaled oxygen concentration detection on the target object to obtain a concentration detection result; when the concentration detection result indicates that it is less than an inhaled oxygen threshold, controlling the ventilator to operate in mechanical ventilation mode. In the present invention, mechanical ventilation control of the ventilator is achieved by performing oxygenation management, pH detection, and inhaled oxygen concentration detection on the target object, thereby solving the problem of complex mechanical ventilation control.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilators, and in particular to a mechanical ventilation control method and device for a ventilator, a ventilator, and a medium. Background Art

[0002] Mechanical ventilation is a type of ventilation that uses mechanical devices to replace, control or change spontaneous breathing movements.

[0003] In existing technologies, airflow obstruction leads to gas trapping, which in turn causes respiratory muscle dysfunction in the target patient. Therefore, controlling the ventilator to provide mechanical ventilation to the target patient is crucial. However, controlling the mechanical ventilation of the ventilator requires specialized personnel to detect the target patient's parameters and adjust the ventilation parameters. This is labor-intensive and requires high professional expertise from the operator. Furthermore, the mechanical ventilation operation of the ventilator is difficult to control, making the control of the mechanical ventilation of the ventilator relatively complex. Summary of the Invention

[0004] The present invention provides a mechanical ventilation control method and device for a ventilator, a ventilator and a medium, so as to solve the problem in the prior art that the mechanical ventilation operation of the ventilator is difficult to control, resulting in relatively complicated mechanical ventilation management of the ventilator.

[0005] A mechanical ventilation control method for a ventilator, comprising:

[0006] Acquiring positive pressure ventilation parameters, and performing continuous positive pressure ventilation on the target subject according to the positive pressure ventilation parameters;

[0007] After the target subject performs a tolerance test, if it is determined that the tolerance test fails, obtaining mechanical ventilation parameters and controlling the ventilator to operate in a mechanical ventilation mode corresponding to the mechanical ventilation parameters;

[0008] performing oxygenation management on the target object to obtain an oxygenation management result;

[0009] When the oxygenation management result indicates that the blood oxygen saturation of the target subject is within a preset blood oxygen range, performing a pH value test on the target subject to obtain a pH value test result;

[0010] When the pH value detection result indicates that the pH value of the target object is within a preset pH range, performing an inhaled oxygen concentration detection on the target object to obtain a concentration detection result;

[0011] When the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than an inhaled oxygen threshold, the ventilator is controlled to operate in a mechanical ventilation mode.

[0012] A mechanical ventilation control device for a ventilator, comprising:

[0013] a positive pressure ventilation operation module, configured to obtain positive pressure ventilation parameters and perform continuous positive pressure ventilation on the target subject according to the positive pressure ventilation parameters;

[0014] a tolerance detection module, configured to, after the target subject performs a tolerance test, obtain mechanical ventilation parameters if it is determined that the tolerance test fails, and control the ventilator to operate in a mechanical ventilation mode corresponding to the mechanical ventilation parameters;

[0015] an oxygenation management module, configured to perform oxygenation management on the target object and obtain an oxygenation management result;

[0016] A pH value detection module is configured to perform a pH value detection on the target object to obtain a pH value detection result when the oxygenation management result indicates that the blood oxygen saturation of the target object is within a preset blood oxygen range;

[0017] An inhaled oxygen detection module is configured to detect the inhaled oxygen concentration of the target object when the pH value detection result indicates that the pH value of the target object is within a preset pH range to obtain a concentration detection result;

[0018] The operating mode module is used to control the ventilator to operate in a mechanical ventilation mode when the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than the inhaled oxygen threshold.

[0019] A ventilator comprises a memory, a controller and a computer program stored in the memory and executable on the controller. When the controller executes the computer program, the mechanical ventilation control method of the ventilator is implemented.

[0020] A computer-readable storage medium stores a computer program, and when the computer program is executed by a controller, the mechanical ventilation control method of the ventilator is implemented.

[0021] The mechanical ventilation control method, device, ventilator and medium provided by the present invention achieve continuous positive pressure ventilation operation on the target object by obtaining positive pressure ventilation parameters. By performing tolerance testing on the target object, when the tolerance test fails, the ventilator is controlled to operate in mechanical ventilation mode. By performing oxygenation management, pH value testing and inhaled oxygen concentration testing on the target object in sequence, the next parameter is tested when the previous test result meets the conditions, which simplifies the mechanical ventilation control of the ventilator, solves the complex problem of mechanical ventilation control of the ventilator, and reduces the professional requirements of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 is a flow chart of a mechanical ventilation control method for a ventilator according to one embodiment of the present invention;

[0024] Figure 2 It is a principle block diagram of a mechanical ventilation control device of a ventilator in one embodiment of the present invention. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] The present invention provides a method for controlling mechanical ventilation of a ventilator. In one embodiment, Figure 1 As shown, the technical solution mainly includes the following steps:

[0027] S10, obtaining positive pressure ventilation parameters, and performing continuous positive airway pressure operation on the target object according to the positive pressure ventilation parameters.

[0028] It is understood that the positive pressure ventilation parameters refer to the parameters of the continuous positive airway pressure system set in advance. The continuous positive airway pressure operation refers to controlling the continuous positive airway pressure system to operate at the positive pressure ventilation parameters.

[0029] Specifically, the parameters of the target object are detected to determine the parameters of the target object. When the parameters of the target object represent respiratory muscle dysfunction, the pre-set positive pressure ventilation parameters are obtained, and the continuous positive airway pressure system performs continuous positive pressure ventilation operations on the target object with the positive pressure ventilation parameters.

[0030] S20 , after the target subject performs a tolerance test, if it is determined that the tolerance test has failed, obtaining mechanical ventilation parameters and controlling the ventilator to operate in a mechanical ventilation mode corresponding to the mechanical ventilation parameters.

[0031] It is understood that mechanical ventilation parameters refer to pre-set mechanical ventilation parameters. Target subjects refer to individuals who require mechanical ventilation management. Mechanical ventilation mode refers to the mode in which the ventilator operates with the mechanical ventilation parameters.

[0032] Specifically, after performing continuous positive pressure ventilation on the target object according to the positive pressure ventilation parameters, a tolerance test is performed on the target object, that is, the preset duration of the ventilator is removed to determine whether the target object can breathe independently, and when the target object can breathe independently, it is determined that the tolerance test has passed, otherwise it is determined that the tolerance test has failed. When it is determined that the tolerance test of the target object has failed, the mechanical ventilation parameters are retrieved from the database, that is, the ventilation mode is continuous ventilation, which can be VCV or PCV, VT (tidal volume) is 6 to 8 ml / kg, the respiratory rate is 8 to 15 / min, Ti (inspiratory time) is 0.6 to 1s, PEEP (positive end expiratory pressure) is 5 cmH2O, and the airway plateau pressure is less than or equal to 30 cmH2O, and the ventilator is controlled to operate in the mechanical ventilation mode corresponding to the mechanical ventilation parameters.

[0033] S30, performing oxygenation management on the target object to obtain an oxygenation management result.

[0034] Understandably, the oxygenation management result is used to indicate whether the blood oxygen saturation is within a preset blood oxygen range.

[0035] Specifically, oxygenation management is performed on the target subject, i.e., blood gas analysis is performed on the target subject via transcutaneous measurement, or the target subject's blood oxygen saturation is obtained from a ventilator, thereby obtaining the target subject's blood oxygen saturation. A preset blood oxygen range corresponding to the target subject is then retrieved from a database, and the blood oxygen saturation is compared with the preset blood oxygen range to determine whether the target subject's blood oxygen saturation is within the preset blood oxygen range, thereby obtaining the oxygenation management result.

[0036] S40 , when the oxygenation management result indicates that the blood oxygen saturation of the target object is within a preset blood oxygen range, performing a pH value test on the target object to obtain a pH value test result.

[0037] It can be understood that the pH value detection result is used to indicate whether the pH value of the target object is within a preset pH range.

[0038] Specifically, when the oxygenation management result indicates that the target subject's blood oxygen saturation is not within a preset blood oxygen range, the inhaled oxygen concentration is adjusted to bring the target subject's blood oxygen saturation within the preset blood oxygen range. The target subject's pH value is then tested, specifically obtaining the target subject's pH value and a preset pH range corresponding to the target subject. The obtained pH value of the target subject is compared with the preset pH range to determine whether the target subject's pH value is within the preset pH detection range, thereby obtaining a pH detection result.

[0039] S50 , when the pH value detection result indicates that the pH value of the target object is within a preset pH range, performing an inhaled oxygen concentration detection on the target object to obtain a concentration detection result.

[0040] S60 , when the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than an inhaled oxygen threshold, controlling the ventilator to operate in a mechanical ventilation mode.

[0041] It can be understood that the concentration detection result is used to represent the size of the positive inspired oxygen concentration and the inspired oxygen threshold.

[0042] Specifically, when the pH value detection result indicates that the pH value of the target subject is not within the preset pH range, the respiratory rate or tidal volume is adjusted by comparing the airway plateau pressure with the threshold value, so that the pH value of the target subject is within the preset pH range. Then, the target subject's inhaled oxygen concentration is obtained from the ventilator, as well as the inhaled oxygen threshold corresponding to the target subject. The inhaled oxygen concentration of the target subject is compared with the inhaled oxygen threshold corresponding to the target subject to obtain a concentration detection result. Furthermore, when the concentration detection result indicates that the inhaled oxygen concentration of the target subject is less than the inhaled oxygen threshold value, the ventilator is controlled to operate in mechanical ventilation mode.

[0043] The embodiment of the present invention achieves continuous positive pressure ventilation operation on the target object by obtaining positive pressure ventilation parameters. By performing tolerance testing on the target object, when the tolerance test fails, it is achieved to control the ventilator to operate in mechanical ventilation mode. By performing oxygenation management, pH value testing and inhaled oxygen concentration testing on the target object in sequence, it is achieved to detect the next parameter when the previous test result meets the conditions, simplifying the mechanical ventilation control of the ventilator, solving the complex problem of mechanical ventilation control of the ventilator, and reducing the professional requirements of the operator.

[0044] In one embodiment, in step S20, that is, after the target object performs tolerance testing, the step further includes:

[0045] S201: When it is determined that the target object has passed the tolerance test, a blood oxygen saturation test is performed on the target object to obtain a blood oxygen test result.

[0046] S202: When the blood oxygen detection result indicates that the blood oxygen saturation of the target object is greater than a blood oxygen saturation threshold, reduce the inspired oxygen concentration.

[0047] S203: Detecting the inhaled oxygen concentration of the target object to obtain an inhaled oxygen detection result.

[0048] S204 : When the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than a concentration threshold, perform a non-invasive ventilation operation on the target object.

[0049] Understandably, non-invasive ventilation refers to ventilation procedures that do not cause trauma to the target subject, such as masks. The inspired oxygen test results are used to characterize the inspired oxygen concentration and concentration threshold. The blood oxygen saturation threshold refers to the limit value of the target subject's blood oxygen saturation.

[0050] Specifically, when it is determined that the tolerance test of the target object has passed, a blood oxygen saturation test is performed on the target object, that is, the blood oxygen saturation of the target object is obtained from the ventilator, and the blood oxygen saturation of the target object is compared with the blood oxygen saturation threshold to obtain a blood oxygen test result. When the blood oxygen test result indicates that the blood oxygen saturation is less than or equal to the blood oxygen saturation threshold, the mechanical ventilation parameters are obtained, and the ventilator is controlled to operate in a mechanical ventilation mode corresponding to the mechanical ventilation parameters. When the blood oxygen test result indicates that the blood oxygen saturation is greater than the blood oxygen saturation threshold, the inhaled oxygen concentration is reduced. Next, an inhaled oxygen concentration test is performed on the target object, that is, the inhaled oxygen concentration of the target object is obtained, and the inhaled oxygen concentration is compared with the concentration threshold. When the concentration test result indicates that the inhaled oxygen concentration of the target object is greater than or equal to the concentration threshold, a tolerance test is performed on the target object again. When the concentration test result indicates that the inhaled oxygen concentration of the target object is less than the concentration threshold, a non-invasive ventilation operation is performed on the target object.

[0051] In this embodiment, by performing blood oxygen saturation testing on the target subject, the blood oxygen detection result is adjusted. When the blood oxygen detection result indicates that the blood oxygen saturation is greater than the blood oxygen saturation threshold, the inspired oxygen concentration is adjusted. When the concentration detection result of the inspired oxygen concentration test on the target subject indicates that the inspired oxygen concentration is less than the concentration threshold, non-invasive ventilation is performed on the target subject.

[0052] In one embodiment, step S30, i.e., performing oxygenation management on the target object to obtain an oxygenation management result, includes:

[0053] S301, obtaining the blood oxygen saturation of the target object, and comparing the blood oxygen saturation with a preset blood oxygen range; the preset blood oxygen range includes a minimum blood oxygen threshold and a maximum blood oxygen threshold.

[0054] S302: When the blood oxygen saturation is less than the minimum blood oxygen threshold, increase the inspired oxygen concentration so that the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold, and obtain an oxygenation management result indicating that the blood oxygen saturation is within a preset blood oxygen range.

[0055] S303: When the blood oxygen saturation is greater than the maximum blood oxygen threshold, reduce the inspired oxygen concentration so that the blood oxygen saturation is less than or equal to the maximum blood oxygen threshold, and obtain an oxygenation management result indicating that the blood oxygen saturation is within a preset blood oxygen range.

[0056] S304: When the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold and less than or equal to the maximum blood oxygen threshold, an oxygenation management result is obtained, indicating that the blood oxygen saturation is within a preset blood oxygen range.

[0057] Understandably, blood oxygen saturation refers to the percentage of oxygenated hemoglobin in a person's blood. The preset blood oxygen range refers to the restricted range of a subject's blood oxygen saturation. The minimum blood oxygen threshold refers to the minimum value within the preset blood oxygen range. The maximum blood oxygen threshold refers to the maximum value within the preset blood oxygen range.

[0058] Specifically, the blood oxygen saturation of the target object is read from the ventilator, and then the preset blood oxygen range corresponding to the target object is retrieved, and the blood oxygen saturation is compared with the preset blood oxygen range, that is, the blood oxygen saturation of the target object is compared with the minimum blood oxygen threshold and the maximum blood oxygen threshold, respectively. When the blood oxygen saturation is less than the minimum blood oxygen threshold, the inhaled oxygen concentration is increased so that the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold, and an oxygenation management result is obtained, indicating that the blood oxygen saturation is within the preset blood oxygen range. When the blood oxygen saturation is greater than the maximum blood oxygen threshold, the inhaled oxygen concentration is reduced so that the blood oxygen saturation is less than or equal to the maximum blood oxygen threshold, and an oxygenation management result is obtained, indicating that the blood oxygen saturation is within the preset blood oxygen range. When the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold, and less than or equal to the maximum blood oxygen threshold, an oxygenation management result is obtained, indicating that the blood oxygen saturation is within the preset blood oxygen range. That is, in this embodiment, when the blood oxygen saturation of the target object is not within the preset blood oxygen range, the inhaled oxygen concentration is adjusted so that the blood oxygen saturation of the target object is within the preset blood oxygen range, thereby realizing the detection of the blood oxygen saturation of the target object and further realizing the control of the mechanical ventilation of the target object.

[0059] In one embodiment, the step S40, i.e., performing a pH test on the target object to obtain a pH test result, includes:

[0060] S401: Obtain a target pH value of a target object, and compare the target pH value with a preset pH range.

[0061] S402, when the target pH value is less than the minimum value of the preset pH range, detect whether the airway plateau pressure of the target object is less than a first plateau pressure threshold. When the airway plateau pressure is less than the first plateau pressure threshold, increase the tidal volume so that the target pH value is greater than or equal to the minimum value of the preset pH range.

[0062] S403, when the airway plateau pressure is greater than or equal to the first plateau pressure threshold, increasing the respiratory rate so that the target pH value is greater than or equal to the minimum value of the preset pH range, and obtaining a pH value detection result indicating that the target pH value is within the preset pH range.

[0063] S404, when the target pH value is greater than the maximum value of the preset pH range, detect whether the airway plateau pressure of the target object is greater than the second plateau pressure threshold; when the airway plateau pressure is less than or equal to the second plateau pressure threshold, reduce the respiratory rate so that the target pH value is less than or equal to the maximum value of the preset pH range.

[0064] S405, when the airway plateau pressure is greater than the second plateau pressure threshold, reducing the tidal volume so that the target pH value is less than or equal to the maximum value of the preset pH range, and obtaining a pH value detection result indicating that the target pH value is within the preset pH range.

[0065] Understandably, the target pH value refers to the pH value of the target object. The preset pH range refers to the pH value range of the target object under normal circumstances. The airway plateau pressure (Pplat, Plateau Pressure) refers to the pressure maintained in the airway from the end of inspiration to the beginning of exhalation. The first plateau pressure threshold refers to the plateau pressure limit value when the pH value of the target object is less than the minimum value of the preset range. The second plateau pressure threshold refers to the plateau pressure limit value when the pH value of the target object is greater than the maximum value of the preset range. The respiratory rate refers to the number of breaths per minute of the target object. The tidal volume refers to the amount of air inhaled or exhaled each time during quiet breathing.

[0066] Specifically, the target pH value of the target object is obtained from the ventilator, and then the preset pH range corresponding to the target object is retrieved from the database, and the target pH value of the target object is compared with the preset pH range. When the target pH value is less than the minimum value of the preset pH range, the airway plateau pressure of the target object is obtained from the ventilator, and the airway plateau pressure of the target object is compared with the first plateau pressure threshold. When the airway plateau pressure is less than the first plateau pressure threshold, the tidal volume is increased so that the target pH value of the target object is greater than or equal to the minimum value of the preset pH range. When the airway plateau pressure is greater than or equal to the first plateau pressure threshold, the respiratory rate is increased so that the target pH value is greater than or equal to the minimum value of the preset pH range, and then a pH value detection result indicating that the target pH value is within the preset pH range can be obtained.

[0067] Furthermore, when the target pH value is greater than the maximum value of the preset pH range, the target subject's airway plateau pressure is compared with a second plateau pressure threshold. If the airway plateau pressure is less than or equal to the second plateau pressure threshold, the respiratory rate is reduced so that the target pH value is less than or equal to the maximum value of the preset pH range. If the airway plateau pressure is greater than the second plateau pressure threshold, the tidal volume is reduced so that the target pH value is less than or equal to the maximum value of the preset pH range. An oxygenation management result indicating that the blood oxygen saturation is within the preset blood oxygen range is obtained. Furthermore, if the target pH value is less than or equal to the maximum value of the preset pH range and greater than or equal to the minimum value of the preset pH range, the target subject's blood oxygen saturation is determined to be within the preset blood oxygen range.

[0068] In this embodiment, the pH value of the target object is detected by comparing the target pH value with the preset pH range. If the target pH value is not within the preset pH range, the airway plateau pressure is detected, thereby adjusting the target pH value so that the target pH value is within the preset pH range, thereby obtaining a pH value detection result indicating that the target pH value is within the preset pH range.

[0069] In one embodiment, in step S50, the inhaled oxygen concentration of the target object is detected to obtain a concentration detection result, which includes a first concentration detection result and a second concentration detection result; including:

[0070] S501 : Acquire the inhaled oxygen concentration of the target object, and compare the inhaled oxygen concentration of the target object with an inhaled oxygen threshold.

[0071] S502: When the inhaled oxygen concentration is greater than or equal to the inhaled oxygen threshold, a first concentration detection result is obtained.

[0072] S503: When the inhaled oxygen concentration is less than the inhaled oxygen threshold, a second concentration detection result is obtained.

[0073] Understandably, the inspired oxygen concentration refers to the oxygen concentration of the gas before it enters the respiratory tract of the target subject. The first concentration detection result is used to indicate that the inspired oxygen concentration is greater than or equal to the inspired oxygen threshold. The second concentration detection result is used to indicate that the inspired oxygen concentration is less than the inspired oxygen threshold. The inspired oxygen threshold refers to the limit value of the inspired oxygen concentration of the target subject.

[0074] Specifically, the inhaled oxygen concentration of the target subject is obtained from the ventilator, that is, the inhaled oxygen concentration is displayed on the ventilator. Then, the inhaled oxygen threshold corresponding to the target subject is retrieved from the database, and the inhaled oxygen concentration of the target subject is compared with the inhaled oxygen threshold. When the inhaled oxygen concentration is greater than or equal to the inhaled oxygen threshold, a first concentration detection result is obtained. When the inhaled oxygen concentration is less than the inhaled oxygen threshold, a second concentration detection result is obtained. That is, in this embodiment, by comparing the inhaled oxygen concentration and the inhaled oxygen threshold, the inhaled oxygen concentration of the target subject is detected, and then the subsequent mechanical ventilation management of the target subject is achieved.

[0075] In one embodiment, after step S50, that is, after detecting the inhaled oxygen concentration of the target object and obtaining the concentration detection result, the following steps are further included:

[0076] S70 , when the concentration detection result indicates that the inspired oxygen concentration of the target subject is greater than or equal to the inspired oxygen threshold, perform an intrinsic PEEP detection on the target subject to obtain a ventilation detection result.

[0077] S80: When the ventilation detection result indicates that the intrinsic PEEP does not exist, re-execute the oxygenation management operation.

[0078] S90: When the ventilation test result indicates the presence of the intrinsic PEEP, a secretion clearing operation is performed using a sputum expectorant to reduce the intrinsic PEEP, and the intrinsic PEEP test is performed again.

[0079] Understandably, ventilation monitoring results are used to indicate whether intrinsic PEEP is present. Intrinsic PEEP (PEEPi), also known as auto-PEEP, refers to the difference between the end-expiratory alveolar pressure and the ventilator's preset PEEP value.

[0080] Specifically, when the concentration detection result indicates that the target subject's inspired oxygen concentration is greater than or equal to the inspired oxygen threshold, the target subject is tested for intrinsic PEEP, that is, the presence of intrinsic PEEP is assessed by observing the respiratory flow waveform at the end of exhalation, the airway pressure-time curve, the end-expiratory lung volume, and blood gas analysis, thereby obtaining a ventilation detection result. For example, when intrinsic PEEP is present, the expiratory flow waveform may be plateau-shaped or downward-sloping; on the airway pressure-time curve, the airway pressure curve may drop below the baseline during exhalation; the end-expiratory lung volume may be higher than normal; and the oxygen partial pressure decreases and the carbon dioxide partial pressure increases in the blood gas analysis. In this embodiment, when the airway pressure is not displayed on the ventilator, an alarm prompt is issued. When the ventilation detection result indicates that intrinsic PEEP is not present, the oxygenation management operation is re-executed. When the ventilation detection result indicates that intrinsic PEEP is present, secretions are cleared using a sputum expectorant to reduce the target subject's intrinsic PEEP, and the target subject's intrinsic PEEP is tested again. That is, in this embodiment, by detecting the intrinsic PEEP of the target subject, ventilation test results are obtained. If intrinsic PEEP is not present, oxygenation management operations are re-executed. If intrinsic PEEP is present, secretions are cleared and intrinsic PEEP is re-tested, thereby assessing the target subject's respiratory function.

[0081] In one embodiment, the step S90, i.e., performing the intrinsic PEEP detection again, further includes:

[0082] S901: After performing the intrinsic PEEP detection again, if the intrinsic PEEP exists, after increasing the positive end-expiratory pressure, return to performing the oxygenation management operation.

[0083] S902: If the triggering mode of the ventilator is invalid, after reducing the tidal volume or respiratory rate, return to executing the oxygenation management operation.

[0084] It can be understood that positive end-expiratory pressure refers to the normal positive pressure maintained in the airway at the end of exhalation when the body controls breathing or assisted breathing.

[0085] Specifically, after the secretions are cleared by the expectorant, the target object is tested for endogenous PEEP again to obtain a new ventilation test result. When the new ventilation test result indicates that the target object does not have endogenous PEEP, the process returns to executing the oxygenation management operation. When the new ventilation test result indicates that the target object has endogenous PEEP, the endogenous PEEP is eliminated by increasing the positive end-expiratory pressure, and the process returns to executing the oxygenation management operation. Furthermore, after increasing the positive end-expiratory pressure, the triggering mode of the ventilator is tested to determine whether there is an invalid trigger in the triggering mode of the ventilator. If there is an invalid trigger in the triggering mode of the ventilator, the tidal volume or respiratory rate is reduced to eliminate the invalid trigger, and the process returns to executing the oxygenation management operation.

[0086] In this embodiment, by re-testing intrinsic PEEP, when intrinsic PEEP is present, positive end-expiratory pressure is increased to eliminate intrinsic PEEP, thereby returning to oxygenation management. By testing the ventilator's triggering mode, in the presence of ineffective triggering, tidal volume or respiratory rate is reduced to eliminate the ineffective triggering, thereby returning to oxygenation management.

[0087] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0088] In one embodiment, a mechanical ventilation control device for a ventilator is provided, and the mechanical ventilation control device for the ventilator corresponds one-to-one with the mechanical ventilation control method for the ventilator in the above embodiment. Figure 2 As shown, the mechanical ventilation control device of the ventilator includes a ventilation mode module 10, a leak detection module 20, an oxygenation management module 30, a pH value detection module 40 and a continuous operation module 50. The functional modules are described in detail as follows:

[0089] A positive pressure ventilation operation module 10 is used to obtain positive pressure ventilation parameters and perform continuous positive pressure ventilation on the target subject according to the positive pressure ventilation parameters;

[0090] a tolerance detection module 20 for, after the target subject performs a tolerance test, obtaining mechanical ventilation parameters if it is determined that the tolerance test fails, and controlling the ventilator to operate in a mechanical ventilation mode corresponding to the mechanical ventilation parameters;

[0091] an oxygenation management module 30, configured to perform oxygenation management on the target object and obtain an oxygenation management result;

[0092] A pH value detection module 40 is configured to perform a pH value detection on the target subject to obtain a pH value detection result when the oxygenation management result indicates that the blood oxygen saturation of the target subject is within a preset blood oxygen range;

[0093] An inhaled oxygen detection module 50 is configured to detect the inhaled oxygen concentration of the target object and obtain a concentration detection result when the pH value detection result indicates that the pH value of the target object is within a preset pH range;

[0094] The operation mode module 60 is configured to control the ventilator to operate in a mechanical ventilation mode when the concentration detection result indicates that the inhaled oxygen concentration of the target subject is less than an inhaled oxygen threshold.

[0095] In one embodiment, the pH value detection module 40 includes:

[0096] a pH comparison unit, configured to obtain a target pH value of a target object and compare the target pH value with a preset pH range;

[0097] a first plateau pressure detection unit, configured to detect whether the airway plateau pressure of the target subject is less than a first plateau pressure threshold when the target pH value is less than a minimum value of the preset pH range, and to increase the tidal volume when the airway plateau pressure is less than the first plateau pressure threshold so that the target pH value is greater than or equal to the minimum value of the preset pH range;

[0098] a pH value respiratory rate increasing unit, configured to increase the respiratory rate when the airway plateau pressure is greater than or equal to a first plateau pressure threshold, so as to obtain a pH value detection result indicating that the target pH value is within the preset pH range after the target pH value is greater than or equal to a minimum value of the preset pH range;

[0099] a second plateau pressure detection unit, configured to detect whether the airway plateau pressure of the target subject is greater than a second plateau pressure threshold when the target pH value is greater than a maximum value of the preset pH range, and to reduce the respiratory rate when the airway plateau pressure is less than or equal to the second plateau pressure threshold so that the target pH value is less than or equal to the maximum value of the preset pH range;

[0100] The pH tidal volume reduction unit is used to reduce the tidal volume when the airway plateau pressure is greater than the second plateau pressure threshold, so that the target pH value is less than or equal to the maximum value of the preset pH range, and then obtain a pH detection result indicating that the target pH value is within the preset pH range.

[0101] In one embodiment, the parameter management module 30, the concentration detection result includes a first concentration detection result and a second concentration detection result; including:

[0102] an inhaled oxygen concentration comparison unit, configured to obtain the inhaled oxygen concentration of the target object and compare the inhaled oxygen concentration of the target object with an inhaled oxygen threshold;

[0103] a first concentration detection result unit, configured to obtain a first concentration detection result when the inhaled oxygen concentration is greater than or equal to an inhaled oxygen threshold;

[0104] The second concentration detection result unit is configured to obtain a second concentration detection result when the inhaled oxygen concentration is less than an inhaled oxygen threshold.

[0105] In one embodiment, the apparatus further comprises:

[0106] an intrinsic PEEP detection module, configured to perform an intrinsic PEEP detection on the target subject to obtain a ventilation detection result when the concentration detection result indicates that the inspired oxygen concentration of the target subject is greater than or equal to an inspired oxygen threshold;

[0107] an intrinsic PEEP non-existence module, configured to re-execute an oxygenation management operation when the ventilation detection result indicates that the intrinsic PEEP is not present;

[0108] The intrinsic PEEP existence module is used to perform a secretion clearing operation by using a sputum expectorant to reduce the intrinsic PEEP and perform the intrinsic PEEP detection again when the ventilation detection result indicates the existence of the intrinsic PEEP.

[0109] In one embodiment, the intrinsic PEEP existence module includes:

[0110] a PEEP increasing unit, configured to, after performing the intrinsic PEEP detection again, return to performing the oxygenation management operation after increasing the positive end-expiratory pressure when the intrinsic PEEP exists;

[0111] The ventilator invalid triggering unit is used to return to performing oxygenation management operations after reducing the tidal volume or respiratory rate if there is an invalid trigger in the triggering mode of the ventilator.

[0112] In one embodiment, the oxygenation management module 30 includes:

[0113] a blood oxygen saturation comparison unit, configured to obtain the blood oxygen saturation of the target object and compare the blood oxygen saturation with a preset blood oxygen range; the preset blood oxygen range includes a minimum blood oxygen threshold and a maximum blood oxygen threshold;

[0114] an inspired oxygen concentration increasing unit, configured to increase the inspired oxygen concentration when the blood oxygen saturation is less than the minimum blood oxygen threshold, so that the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold, and obtain an oxygenation management result indicating that the blood oxygen saturation is within a preset blood oxygen range;

[0115] The inspired oxygen concentration reducing unit is used to reduce the inspired oxygen concentration when the blood oxygen saturation is greater than the maximum blood oxygen threshold so that the blood oxygen saturation is less than or equal to the maximum blood oxygen threshold, thereby obtaining an oxygenation management result indicating that the blood oxygen saturation is within a preset blood oxygen range.

[0116] The saturation is in a range unit, which is used to obtain an oxygenation management result indicating that the blood oxygen saturation is within a preset blood oxygen range when the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold and less than or equal to the maximum blood oxygen threshold.

[0117] In one embodiment, the tolerance detection module 20 includes:

[0118] a blood oxygen detection result unit, configured to perform a blood oxygen saturation test on the target subject to obtain a blood oxygen detection result when it is determined that the target subject has passed the tolerance test;

[0119] an inspired oxygen concentration reducing unit, configured to reduce the inspired oxygen concentration when the blood oxygen detection result indicates that the blood oxygen saturation of the target object is greater than a blood oxygen saturation threshold;

[0120] a concentration detection unit, configured to detect the inhaled oxygen concentration of the target object and obtain an inhaled oxygen detection result;

[0121] The non-invasive ventilation operation unit is configured to perform a non-invasive ventilation operation on the target object when the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than a concentration threshold.

[0122] For the specific definition of the mechanical ventilation control device of the ventilator, please refer to the definition of the mechanical ventilation control method of the ventilator above, which will not be repeated here. The various modules in the mechanical ventilation control device of the ventilator can be implemented in whole or in part by software, hardware, or a combination thereof. The above modules can be embedded in or independent of the controller in the ventilator in hardware form, or can be stored in the memory of the ventilator in software form, so that the controller can call and execute the operations corresponding to the above modules.

[0123] In one embodiment, a ventilator is provided, comprising a controller, a memory, a network interface, and a database connected via a system bus. The controller of the ventilator is configured to provide computing and control capabilities. The memory of the ventilator comprises a readable storage medium and an internal memory. The readable storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and computer program in the readable storage medium. The network interface of the ventilator is configured to communicate with an external terminal via a network connection. When the computer program is executed by the controller, a method for controlling mechanical ventilation of the ventilator is implemented.

[0124] In one embodiment, a ventilator is provided, comprising a memory, a controller, and a computer program stored in the memory and executable on the controller, wherein the controller implements the mechanical ventilation control method of the ventilator described above when executing the computer program.

[0125] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a controller, the mechanical ventilation control method of the ventilator in the above embodiment is implemented.

[0126] Those skilled in the art will appreciate that all or part of the processes in the above-described embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the above-described embodiments. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct RAM bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM).

[0127] Those skilled in the art will clearly understand that for the sake of convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0128] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A ventilator comprising a memory, a controller, and a computer program stored in the memory and executable on the controller, wherein: The controller is configured to perform the following steps: Acquiring positive pressure ventilation parameters, and performing continuous positive pressure ventilation on the target subject according to the positive pressure ventilation parameters; After the target subject performs a tolerance test, if it is determined that the tolerance test fails, obtaining mechanical ventilation parameters and controlling the ventilator to operate in a mechanical ventilation mode corresponding to the mechanical ventilation parameters; performing oxygenation management on the target object to obtain an oxygenation management result; When the oxygenation management result indicates that the blood oxygen saturation of the target subject is within a preset blood oxygen range, performing a pH value test on the target subject to obtain a pH value test result; When the pH value detection result indicates that the pH value of the target object is within a preset pH range, performing an inhaled oxygen concentration detection on the target object to obtain a concentration detection result; When the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than an inhaled oxygen threshold, controlling the ventilator to operate in a mechanical ventilation mode; After the target object performs tolerance detection, the method further includes: When it is determined that the target object passes the tolerance test, performing a blood oxygen saturation test on the target object to obtain a blood oxygen test result; When the blood oxygen detection result indicates that the blood oxygen saturation of the target object is greater than a blood oxygen saturation threshold, reducing the inspired oxygen concentration; Performing an inhaled oxygen concentration test on the target object to obtain an inhaled oxygen test result; When the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than a concentration threshold, a non-invasive ventilation operation is performed on the target object.

2. The ventilator according to claim 1, wherein The step of performing a pH test on the target object to obtain a pH test result includes: Obtaining a target pH value of a target object, and comparing the target pH value with a preset pH range; When the target pH value is less than the minimum value of the preset pH range, detecting whether the airway plateau pressure of the target subject is less than a first plateau pressure threshold, and when the airway plateau pressure is less than the first plateau pressure threshold, increasing the tidal volume so that the target pH value is greater than or equal to the minimum value of the preset pH range; When the airway plateau pressure is greater than or equal to the first plateau pressure threshold, increasing the respiratory rate so that the target pH value is greater than or equal to the minimum value of the preset pH range, and obtaining a pH value detection result indicating that the target pH value is within the preset pH range; When the target pH value is greater than the maximum value of the preset pH range, detecting whether the airway plateau pressure of the target subject is greater than a second plateau pressure threshold, and when the airway plateau pressure is less than or equal to the second plateau pressure threshold, reducing the respiratory rate so that the target pH value is less than or equal to the maximum value of the preset pH range; When the airway plateau pressure is greater than the second plateau pressure threshold, the tidal volume is reduced so that the target pH value is less than or equal to the maximum value of the preset pH range, and then a pH value detection result is obtained indicating that the target pH value is within the preset pH range.

3. The ventilator according to claim 1, wherein The concentration detection result includes a first concentration detection result and a second concentration detection result; The detecting of the inhaled oxygen concentration of the target object to obtain a concentration detection result includes: Acquiring the inhaled oxygen concentration of the target object, and comparing the inhaled oxygen concentration of the target object with an inhaled oxygen threshold; When the inhaled oxygen concentration is greater than or equal to the inhaled oxygen threshold, obtaining a first concentration detection result; When the inhaled oxygen concentration is less than the inhaled oxygen threshold, a second concentration detection result is obtained.

4. The ventilator according to claim 1, wherein After detecting the inhaled oxygen concentration of the target object and obtaining the concentration detection result, the method further includes: When the concentration detection result indicates that the inspired oxygen concentration of the target subject is greater than or equal to the inspired oxygen threshold, performing an intrinsic PEEP detection on the target subject to obtain a ventilation detection result; When the ventilation detection result indicates that the intrinsic PEEP is absent, re-performing the oxygenation management operation; When the ventilation test result indicates the presence of the intrinsic PEEP, a secretion clearing operation is performed using a sputum expectorant to reduce the intrinsic PEEP, and the intrinsic PEEP test is performed again.

5. The ventilator according to claim 4, wherein: The re-performing the intrinsic PEEP detection further includes: After performing the intrinsic PEEP test again, when the intrinsic PEEP is present, returning to the oxygenation management operation after increasing the positive end-expiratory pressure; If the triggering mode of the ventilator has invalid triggering, the ventilator returns to the oxygenation management operation after reducing the tidal volume or respiratory rate.

6. The ventilator according to claim 1, wherein The performing oxygenation management on the target object to obtain an oxygenation management result includes: Obtaining the blood oxygen saturation of the target subject, and comparing the blood oxygen saturation with a preset blood oxygen range; the preset blood oxygen range includes a minimum blood oxygen threshold and a maximum blood oxygen threshold; When the blood oxygen saturation is less than the minimum blood oxygen threshold, increasing the inspired oxygen concentration so that the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold, and obtaining an oxygenation management result indicating that the blood oxygen saturation is within a preset blood oxygen range; When the blood oxygen saturation is greater than the maximum blood oxygen threshold, reducing the inspired oxygen concentration so that the blood oxygen saturation is less than or equal to the maximum blood oxygen threshold, and obtaining an oxygenation management result indicating that the blood oxygen saturation is within a preset blood oxygen range; When the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold and less than or equal to the maximum blood oxygen threshold, an oxygenation management result is obtained, indicating that the blood oxygen saturation is within a preset blood oxygen range.

7. A mechanical ventilation control device for a ventilator, characterized in that: include: a positive pressure ventilation operation module, configured to obtain positive pressure ventilation parameters and perform continuous positive pressure ventilation on the target subject according to the positive pressure ventilation parameters; a tolerance detection module, configured to, after the target subject performs a tolerance test, obtain mechanical ventilation parameters if it is determined that the tolerance test fails, and control the ventilator to operate in a mechanical ventilation mode corresponding to the mechanical ventilation parameters; an oxygenation management module, configured to perform oxygenation management on the target object and obtain an oxygenation management result; A pH value detection module is configured to perform a pH value detection on the target object to obtain a pH value detection result when the oxygenation management result indicates that the blood oxygen saturation of the target object is within a preset blood oxygen range; An inhaled oxygen detection module is configured to detect the inhaled oxygen concentration of the target object when the pH value detection result indicates that the pH value of the target object is within a preset pH range to obtain a concentration detection result; an operating mode module, configured to control the ventilator to operate in a mechanical ventilation mode when the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than an inhaled oxygen threshold; The tolerance detection module includes: a blood oxygen detection result unit, configured to perform a blood oxygen saturation test on the target subject to obtain a blood oxygen detection result when it is determined that the target subject has passed the tolerance test; an inspired oxygen concentration reducing unit, configured to reduce the inspired oxygen concentration when the blood oxygen detection result indicates that the blood oxygen saturation of the target object is greater than a blood oxygen saturation threshold; a concentration detection unit, configured to detect the inhaled oxygen concentration of the target object and obtain an inhaled oxygen detection result; The non-invasive ventilation operation unit is configured to perform a non-invasive ventilation operation on the target object when the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than a concentration threshold.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by the controller, the following steps are implemented: Acquiring positive pressure ventilation parameters, and performing continuous positive pressure ventilation on the target subject according to the positive pressure ventilation parameters; After the target subject performs a tolerance test, if it is determined that the tolerance test fails, obtaining mechanical ventilation parameters and controlling the ventilator to operate in a mechanical ventilation mode corresponding to the mechanical ventilation parameters; performing oxygenation management on the target object to obtain an oxygenation management result; When the oxygenation management result indicates that the blood oxygen saturation of the target subject is within a preset blood oxygen range, performing a pH value test on the target subject to obtain a pH value test result; When the pH value detection result indicates that the pH value of the target object is within a preset pH range, performing an inhaled oxygen concentration detection on the target object to obtain a concentration detection result; When the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than an inhaled oxygen threshold, controlling the ventilator to operate in a mechanical ventilation mode; After the target object performs tolerance detection, the method further includes: When it is determined that the target object passes the tolerance test, performing a blood oxygen saturation test on the target object to obtain a blood oxygen test result; When the blood oxygen detection result indicates that the blood oxygen saturation of the target object is greater than a blood oxygen saturation threshold, reducing the inspired oxygen concentration; Performing an inhaled oxygen concentration test on the target object to obtain an inhaled oxygen test result; When the concentration detection result indicates that the inhaled oxygen concentration of the target object is less than a concentration threshold, a non-invasive ventilation operation is performed on the target object.

9. The computer-readable storage medium of claim 8, wherein: The step of performing a pH test on the target object to obtain a pH test result includes: Obtaining a target pH value of a target object, and comparing the target pH value with a preset pH range; When the target pH value is less than the minimum value of the preset pH range, detecting whether the airway plateau pressure of the target subject is less than a first plateau pressure threshold, and when the airway plateau pressure is less than the first plateau pressure threshold, increasing the tidal volume so that the target pH value is greater than or equal to the minimum value of the preset pH range; When the airway plateau pressure is greater than or equal to the first plateau pressure threshold, increasing the respiratory rate so that the target pH value is greater than or equal to the minimum value of the preset pH range, and obtaining a pH value detection result indicating that the target pH value is within the preset pH range; When the target pH value is greater than the maximum value of the preset pH range, detecting whether the airway plateau pressure of the target subject is greater than a second plateau pressure threshold, and when the airway plateau pressure is less than or equal to the second plateau pressure threshold, reducing the respiratory rate so that the target pH value is less than or equal to the maximum value of the preset pH range; When the airway plateau pressure is greater than the second plateau pressure threshold, the tidal volume is reduced so that the target pH value is less than or equal to the maximum value of the preset pH range, and then a pH value detection result is obtained indicating that the target pH value is within the preset pH range.

10. The computer-readable storage medium of claim 8, wherein The concentration detection result includes a first concentration detection result and a second concentration detection result; The detecting of the inhaled oxygen concentration of the target object to obtain a concentration detection result includes: Acquiring the inhaled oxygen concentration of the target object, and comparing the inhaled oxygen concentration of the target object with an inhaled oxygen threshold; When the inhaled oxygen concentration is greater than or equal to the inhaled oxygen threshold, obtaining a first concentration detection result; When the inhaled oxygen concentration is less than the inhaled oxygen threshold, a second concentration detection result is obtained.

11. The computer-readable storage medium of claim 8, wherein After detecting the inhaled oxygen concentration of the target object and obtaining the concentration detection result, the computer program further implements the following steps when executed by the controller: When the concentration detection result indicates that the inspired oxygen concentration of the target subject is greater than or equal to the inspired oxygen threshold, performing an intrinsic PEEP detection on the target subject to obtain a ventilation detection result; When the ventilation detection result indicates that the intrinsic PEEP is absent, re-performing the oxygenation management operation; When the ventilation test result indicates the presence of the intrinsic PEEP, a secretion clearing operation is performed using a sputum expectorant to reduce the intrinsic PEEP, and the intrinsic PEEP test is performed again.

12. The computer-readable storage medium of claim 11, wherein: The re-performing the intrinsic PEEP detection further includes: After performing the intrinsic PEEP test again, when the intrinsic PEEP is present, returning to the oxygenation management operation after increasing the positive end-expiratory pressure; If the triggering mode of the ventilator has invalid triggering, the ventilator returns to the oxygenation management operation after reducing the tidal volume or respiratory rate.

13. The computer-readable storage medium of claim 8, wherein: The performing oxygenation management on the target object to obtain an oxygenation management result includes: Obtaining the blood oxygen saturation of the target subject, and comparing the blood oxygen saturation with a preset blood oxygen range; the preset blood oxygen range includes a minimum blood oxygen threshold and a maximum blood oxygen threshold; When the blood oxygen saturation is less than the minimum blood oxygen threshold, increasing the inspired oxygen concentration so that the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold, and obtaining an oxygenation management result indicating that the blood oxygen saturation is within a preset blood oxygen range; When the blood oxygen saturation is greater than the maximum blood oxygen threshold, reducing the inspired oxygen concentration so that the blood oxygen saturation is less than or equal to the maximum blood oxygen threshold, and obtaining an oxygenation management result indicating that the blood oxygen saturation is within a preset blood oxygen range; When the blood oxygen saturation is greater than or equal to the minimum blood oxygen threshold and less than or equal to the maximum blood oxygen threshold, an oxygenation management result is obtained, indicating that the blood oxygen saturation is within a preset blood oxygen range.

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