Control method of inspiration and expiration keeping function, breathing support equipment and product
By monitoring ventilation parameters in real-time in the respiratory support device and automatically calculating the inhalation and exhalation retention time, the operational errors caused by manual operations are solved, and more efficient automated control and personalized treatment are achieved.
Patent Information
- Application Number
- CN202510421910.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2025-07-04
AI Technical Summary
The breathing and breathing maintenance function of existing ventilators depends on manual operation by medical staff, and cannot take into account the physiological status and ventilation needs of different patients, resulting in operational errors and unstable treatment effects.
Manual adjustment and temporary control functions are provided by introducing sensors into the breathing support device to monitor ventilation parameters in real time, automatically calculate the inhalation and exhalation holding reference duration, and perform corresponding holding functions after receiving user instructions.
It improves the automation of the breathing and breathing maintenance function, reduces the work burden of medical staff, and ensures the stability and personalized adaptability of treatment.
Smart Images
Figure CN120242247A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to medical devices, and particularly to a control method for an inhalation and exhalation hold function, a respiratory support device, a medium, and a product. Background Art
[0002] Currently, ventilators only support manual operation of the inhalation and exhalation hold function by medical staff. However, the physiological states and ventilation requirements of different patients vary. Medical staff need to rely on their own experience to judge the required inhalation hold duration or exhalation hold duration for patients, which is undoubtedly a huge challenge for medical staff. When medical staff manually press the inhalation hold or exhalation hold button for a patient, they cannot attend to other patients or other urgent medical tasks, and there are great limitations. In addition, when manually controlling the inhalation and exhalation hold function, medical staff need to always pay high attention and even make timely adjustments, and it is inevitable that there will be operating errors. When the ventilation parameters of a patient fluctuate due to misjudgment or improper operation by medical staff, it will directly affect the treatment effect of the patient.
[0003] Therefore, how to improve the automation degree of the inhalation and exhalation hold function of medical devices is an urgent problem to be solved. Summary of the Invention
[0004] The main technical problem to be solved by the present invention is how to improve the automation degree of the inhalation and exhalation hold function of medical devices.
[0005] According to a first aspect, in one embodiment, a control method for an inhalation and exhalation hold function is provided, which is applied to a respiratory support device. The method includes:
[0006] Obtain ventilation parameters generated in real time by the respiratory support device;
[0007] Calculate an inhalation hold reference duration and / or an exhalation hold reference duration according to the ventilation parameters;
[0008] Display the inhalation hold reference duration and / or the exhalation hold reference duration on an operation interface;
[0009] Receive an instruction to start inhalation hold. In response to this instruction, perform inhalation hold on the patient according to the inhalation hold reference duration, and end inhalation hold after the inhalation hold has lasted for the inhalation hold reference duration; and / or,
[0010] Receive an instruction to start exhalation hold. In response to this instruction, perform exhalation hold on the patient according to the exhalation hold reference duration, and end exhalation hold after the exhalation hold has lasted for the exhalation hold reference duration.
[0011] According to a second aspect, in one embodiment, a respiratory support device is provided. The respiratory support device includes:
[0012] A ventilation module, which is used to connect with a patient through a ventilation pipeline to provide respiratory support for the patient;
[0013] A detection system, which is used to detect when the ventilation module provides respiratory support for the patient to obtain ventilation parameters;
[0014] A human-machine interaction device;
[0015] A controller, which is used for:
[0016] Calculating an inspiratory hold reference duration and / or an expiratory hold reference duration according to the ventilation parameters; displaying the inspiratory hold reference duration and / or the expiratory hold reference duration on an operation interface of the human-machine interaction device;
[0017] Receiving an instruction to start an inspiratory hold through the human-machine interaction device, and in response to this instruction, performing an inspiratory hold on the patient according to the inspiratory hold reference duration, and ending the inspiratory hold after the inspiratory hold has lasted for the inspiratory hold reference duration; and / or,
[0018] Receiving an instruction to start an expiratory hold through the human-machine interaction device, and in response to this instruction, performing an expiratory hold on the patient according to the expiratory hold reference duration, and ending the expiratory hold after the expiratory hold has lasted for the expiratory hold reference duration.
[0019] According to a third aspect, in one embodiment, a computer program product is provided, including a computer program and / or instructions, and when the computer program and / or instructions are executed by a processor, the control method of the inhalation and exhalation hold function described in the above claims is implemented.
[0020] According to the control method of the inhalation and exhalation hold function in the above embodiment, the respiratory support device can directly calculate the inspiratory hold reference duration and / or the expiratory hold reference duration according to the ventilation parameters. In this way, after the respiratory support device obtains the relevant instructions of the user, it can perform an inspiratory hold on the patient according to the inspiratory hold reference duration, or perform an expiratory hold on the patient according to the expiratory hold reference duration, thereby avoiding the user continuously manually controlling the inspiratory hold or the expiratory hold. In this way, the automation degree of the inhalation and exhalation hold function of the respiratory support device is improved. Description of the Drawings
[0021] Figure 1 It is a schematic flowchart of a control method of an inhalation and exhalation hold function provided in this embodiment;
[0022] Figure 2 It is a schematic diagram of an operation interface of the respiratory support device provided in this embodiment Figure 1 ;
[0023] Figure 3Schematic diagram of the operation interface of the respiratory support device provided in this embodiment Figure 2 。 Detailed implementation manners
[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners are labeled with related similar element numbers. In the following implementation manners, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid overwhelming the core part of the present application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and general technical knowledge in the art.
[0025] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean that they are necessary sequences, unless it is stated otherwise that a certain sequence must be followed.
[0026] The serial numbers assigned to the components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling).
[0027] As a key device in the modern medical field, the ventilator plays a crucial role in the treatment of various respiratory diseases. Especially in the rescue of critically ill patients and providing long-term ventilation support, its importance is self-evident. With the rapid development of medical technology, the functions of the ventilator have been greatly enriched and improved. Among them, the functions of inspiratory hold and expiratory hold time control have become indispensable key features of modern ventilators. The inspiratory hold function is mainly used to measure the plateau pressure, static compliance of the patient, and evaluate the inspiratory drive, providing important information about the patient's respiratory system status for doctors. The expiratory hold function is mainly used to measure the patient's intrinsic PEEP (positive end-expiratory pressure), total PEEP, and transpulmonary pressure at the end of expiration, helping doctors to more comprehensively understand the patient's respiratory condition.
[0028] However, the time control of inhalation and exhalation of traditional ventilators mainly relies on the experience and judgment of medical staff. Moreover, medical staff also need to continuously press the breath hold button to perform the inhalation and exhalation hold operations, and end this process by lifting the breath hold button. This manual control method has obvious limitations. First of all, the physiological states and ventilation requirements of different patients are different. When medical staff continuously press the inhalation hold or exhalation hold button, they cannot timely take into account the physiological state and ventilation requirements of patients, let alone pay attention to other patients or tasks. Secondly, manual control requires medical staff to always maintain a high degree of attention and make timely adjustments, which undoubtedly increases their work burden. More importantly, manual operation may lead to fluctuations in ventilation parameters due to misjudgment or improper operation, thus affecting the treatment effect of patients.
[0029] To solve the above problems, this application introduces an intelligent function for controlling the inhalation hold and exhalation hold time on the respiratory support device. This function uses built-in sensors to continuously monitor the ventilation parameters and physiological state of patients, and automatically calculates the appropriate reference duration for inhalation hold and / or exhalation hold accordingly. In this way, after the respiratory support device receives the relevant instructions from the user, it can perform inhalation hold on the patient according to the reference duration for inhalation hold, or perform exhalation hold on the patient according to the reference duration for exhalation hold. This intelligent improvement not only avoids the user from continuously manually controlling the inhalation hold or exhalation hold, but also improves the automation degree of the inhalation and exhalation hold function of the respiratory support device, and effectively reduces the work burden of medical staff. In addition, the respiratory support device of this application also provides a function for manually adjusting the duration of inhalation hold and exhalation hold to meet the personalized treatment needs of different patients. When it is difficult for medical staff to make accurate judgments, the respiratory support device also provides a temporary control function to enable medical staff to quickly adjust the ventilation parameters in case of emergency, thus ensuring the life safety of patients.
[0030] Embodiment 1:
[0031] Please refer to Figure 1 , Figure 1 which is a schematic flowchart of a control method for an inhalation and exhalation hold function provided in this embodiment. As Figure 1 shown, this control method is applied to a respiratory support device and specifically includes the following steps 101-104:
[0032] Step 101: Obtain the ventilation parameters generated by the respiratory support device in real time.
[0033] It should be noted that the respiratory support device refers to a device used to help patients with dyspnea maintain normal breathing. Exemplarily, the respiratory support device can be a miniaturized and portable ventilator. It can also be a miniaturized and portable home ventilator. In this regard, this application makes no specific limitations.
[0034] In this embodiment, the ventilation parameters include: airway pressure parameter, tidal volume parameter, positive end-expiratory pressure parameter, and esophageal pressure parameter.
[0035] It should be noted that the airway pressure parameter represents the pressure parameter generated by the gas delivered by the respiratory support device using mechanical ventilation to the patient. It is usually measured in centimeters of water column (cmH2O). It is an important indicator for the respiratory support device to monitor and adjust the respiratory function, reflecting the operation of the human respiratory system and the strength and stability of the gas output by the ventilator. In practical applications, users monitor the changes in the patient's airway pressure through the respiratory support device to understand the pressure requirements of the patient during inhalation and exhalation.
[0036] It should be noted that the tidal volume parameter represents the volume of gas inhaled or exhaled by the patient during each quiet breath. In practical applications, users monitor the tidal volume of the patient's each breath through the respiratory support device to check whether the patient suffers from respiratory diseases such as interstitial pneumonia and chronic obstructive pulmonary disease.
[0037] It should be noted that the positive end-expiratory pressure parameter represents the exogenous pressure applied to the airway through the respiratory support device at the end of exhalation during mechanical ventilation, so that the alveoli maintain a certain positive pressure level at the end of exhalation. In practical applications, users can select an appropriate positive end-expiratory pressure to reopen the poorly ventilated alveoli, maintain the tension of the alveoli, thereby improving lung compliance, preventing alveolar collapse, correcting the ventilation / perfusion ratio imbalance, increasing oxygen transport and diffusion, and improving hypoxemia.
[0038] It should be noted that the esophageal pressure parameter represents the pressure parameter in the esophagus. In practical applications, after monitoring the esophageal pressure, medical staff can more accurately understand the functional state of the patient's respiratory system.
[0039] Step 102: Calculate the inspiratory hold reference duration and / or expiratory hold reference duration according to the ventilation parameters.
[0040] It should be noted that the inspiratory hold reference duration can be determined according to the following formula:
[0041] Ti_ref = (Vt / Flow) + (Cstat × R) + (Ppeak - PEEP) (1)
[0042] In formula (1): Vt represents the tidal volume (ml); Flow represents the inspiratory flow rate (L / min); Cstat represents the static compliance (ml / cmH2O); R represents the airway resistance (cmH2O / L / s); Ppeak represents the peak inspiratory pressure (cmH2O); PEEP represents the positive end-expiratory pressure (cmH2O).
[0043] It should be noted that the reference duration of expiration hold can be determined according to the following formula:
[0044] Te_ref = (Vt / Flow) × (1 + PEEPi / PEEP) + RCexp (2)
[0045] In formula (2): RCexp = Cstat × Rexp; RCexp represents the expiratory time constant; Rexp represents the expiratory resistance (cmH2O / L / s); PEEPi represents the intrinsic PEEP (cmH2O).
[0046] It should be noted that the reference duration of inspiration hold represents the time period from the end of expiration to the start of the next expiration in a normal respiratory cycle. In practical applications, the inspiratory time of normal people is mostly about 2 to 4 seconds. In practical applications, the inspiratory time is affected by various factors. For example, physiological factors: physiological characteristics such as age, gender, and body size will affect the inspiratory time. For example, young people and those with a larger body size may have a longer inspiratory time; while children and infants have a shorter inspiratory time. Another example is health status: certain diseases, such as asthma and chronic obstructive pulmonary disease, may cause the inspiratory time to become longer. These diseases will affect the function of the respiratory system, thereby affecting the inspiratory time.
[0047] It should be noted that the reference duration of expiration hold represents the duration of the expiratory phase during the breathing process. In practical applications, for a healthy adult, during a vital capacity test, the maximum expiratory time (i.e., the time that can continuously exhale) should generally be between 6 and 9 seconds. This means that the time from maximum inspiration to completely exhaling the gas in the lungs should exceed 6 seconds. In practical applications, the expiratory time is affected by various factors. For example, physiological characteristics such as age, gender, and weight will affect the expiratory time. For example, men usually have a longer expiratory time than women; older people usually have a longer expiratory time than younger people. Another example is health status: certain diseases, such as chronic obstructive pulmonary disease and asthma, may cause the expiratory time to shorten because airway stenosis or obstruction will increase the resistance of exhalation.
[0048] Step 103: Display the reference duration of inspiration hold and / or the reference duration of expiration hold on the operation interface.
[0049] It should be noted that after calculating the reference duration of inspiratory hold and / or expiratory hold according to the ventilation parameters, the reference duration of inspiratory hold and / or expiratory hold can be displayed on the operation interface for the user to select.
[0050] In practical applications, when the user (medical staff) opens the operation interface for inspiratory hold and expiratory hold, the system of the respiratory support device will display the recommended reference duration of inspiratory hold and / or expiratory hold. This function greatly simplifies the operation process and improves the ventilation efficiency.
[0051] In this embodiment, the respiratory support device receives an instruction from the user to adjust the reference duration of inspiratory hold, and adjusts the reference duration of inspiratory hold in response to this instruction to obtain the target duration of inspiratory hold; receives an instruction to start inspiratory hold, and in response to this instruction, performs inspiratory hold on the patient according to the target duration of inspiratory hold, and ends the inspiratory hold after the inspiratory hold has lasted for the target duration of inspiratory hold; and / or,
[0052] The respiratory support device receives an instruction from the user to adjust the reference duration of expiratory hold, and adjusts the reference duration of expiratory hold in response to this instruction to obtain the target duration of expiratory hold; receives an instruction to start expiratory hold, and in response to this instruction, performs expiratory hold on the patient according to the target duration of expiratory hold, and ends the expiratory hold after the expiratory hold has lasted for the target duration of expiratory hold.
[0053] It should be noted that the reference duration of inspiratory hold and / or expiratory hold displayed on the operation interface of the respiratory support device can be adjusted. This is because the physiological states of different patients are different, and the required duration of inspiratory hold and / or expiratory hold for different physiological states is also different. In order to meet the personalized treatment needs of different patients, this application proposes to use the physiological state information of the patient as the basis for the user to adjust the reference duration of inspiratory hold and / or expiratory hold.
[0054] The specific solution is as follows: The respiratory support device obtains the physiological state information of the patient and displays it on the operation interface, providing a basis for the user to adjust the reference duration of inspiratory hold and / or expiratory hold; wherein, the physiological state information includes at least one of age parameter, weight parameter, disease type, and disease symptom.
[0055] It should be noted that there are differences in the ventilation support requirements of patients of different ages and weights. The user can make adaptive adjustments to the duration of inspiratory hold and / or expiratory hold according to the age and weight of the patient. For example, young people and people with a larger body weight may have a longer inspiratory time; while children and infants have a shorter inspiratory time. For another example, the elderly usually have a longer expiratory time than young people.
[0056] It should be noted that patients with different disease types and symptoms have different requirements for ventilation support. Users can adaptively adjust the inhalation hold duration and / or exhalation hold duration according to the patient's disease type and symptoms. For example, asthma, chronic obstructive pulmonary disease, etc. may cause the patient's inhalation time to become longer or the patient's exhalation time to become shorter.
[0057] That is to say, even if the respiratory support device system provides the user with an inhalation hold reference duration and / or an exhalation hold reference duration, the user can still manually adjust the inhalation hold reference duration and / or the exhalation hold reference duration according to the actual usage scenario and the patient's physiological state information. Thus, personalized treatment of the patient can be achieved. In this way, it is ensured that the respiratory support device can adapt to various complex and changeable clinical situations and improve the effectiveness of treatment.
[0058] As Figure 2 shown, after the user clicks the [Start] button displayed on the operation interface of the respiratory support device, the respiratory support device system will automatically perform an inhalation hold according to the inhalation hold reference duration. During the execution of the inhalation hold, the [Start] button will change to [Stop]. The user can click the [Stop] button at any time to end the inhalation hold, or the respiratory support device system can automatically end the inhalation hold operation after the inhalation hold has lasted for the inhalation hold reference duration.
[0059] As Figure 3 shown, the user can adjust the inhalation hold reference duration by clicking the [Time] button displayed on the operation interface of the respiratory support device. After obtaining the inhalation hold target duration, the user continues to click the [Start] button displayed on the operation interface of the respiratory support device. At this time, the respiratory support device system will automatically perform an inhalation hold according to the inhalation hold target duration. During the execution of the inhalation hold, the [Start] button will change to [Stop]. The user can click the [Stop] button at any time to end the inhalation hold, or the respiratory support device system can automatically end the inhalation hold operation after the inhalation hold has lasted for the inhalation hold target duration.
[0060] Step 104: Receive an instruction to start an inhalation hold. In response to this instruction, perform an inhalation hold on the patient according to the inhalation hold reference duration, and end the inhalation hold after the inhalation hold has lasted for the inhalation hold reference duration; and / or, receive an instruction to start an exhalation hold. In response to this instruction, perform an exhalation hold on the patient according to the exhalation hold reference duration, and end the exhalation hold after the exhalation hold has lasted for the exhalation hold reference duration.
[0061] In practical applications, when the respiratory support device receives an instruction to start inspiratory hold, the respiratory support device will perform inspiratory hold on the patient according to the reference duration of inspiratory hold, and automatically end the inspiratory hold after the inspiratory hold has lasted for the reference duration of inspiratory hold. In this way, the user only needs to transmit an instruction to start inspiratory hold to the respiratory support device to achieve automatic control of the patient's inspiratory hold, thereby improving the automation level of the inspiratory hold function of the respiratory support device.
[0062] In practical applications, when the respiratory support device receives an instruction to start expiratory hold, the respiratory support device will perform expiratory hold on the patient according to the reference duration of expiratory hold, and automatically end the inspiratory hold after the expiratory hold has lasted for the reference duration of expiratory hold. In this way, the user only needs to transmit an instruction to start expiratory hold to the respiratory support device to achieve automatic control of the patient's expiratory hold, thereby improving the automation level of the expiratory hold function of the respiratory support device.
[0063] In this embodiment, when performing expiratory hold on the patient according to the reference duration of expiratory hold or the target duration of expiratory hold, the intrinsic PEEP, total PEEP, and transpulmonary pressure at end-expiration are calculated respectively, and the intrinsic PEEP, total PEEP, and transpulmonary pressure at end-expiration are displayed on the operation interface.
[0064] It should be noted that the intrinsic PEEP (PEEPi) can be determined according to the following formula:
[0065] PEEPi = Pplat - PEEP - (Vt / Cstat) (3)
[0066] In formula (3): Pplat represents the plateau pressure (cmH2O).
[0067] It should be noted that the total PEEP can be determined according to the following formula:
[0068] Total PEEP = PEEP + PEEPi (4) It should be noted that the transpulmonary pressure at end-expiration can be determined according to the following formula:
[0069] Transpulmonary pressure at end-expiration = Total PEEP - Esophageal pressure (5)
[0070] It should be noted that the intrinsic PEEP (intrinsic positive expiratory pressure) represents the positive pressure state in the alveoli at end-expiration in the absence of the use of exogenous PEEP. In practical applications, the pressure sensor built in the respiratory support device will monitor the intrinsic end-expiratory positive pressure in real time and calculate the average value to obtain a more reference-worthy intrinsic end-expiratory positive pressure.
[0071] Total PEEP consists of two parts: extrinsic positive end-expiratory pressure (PEEPe) and intrinsic positive end-expiratory pressure (PEEPi).
[0072] Extrinsic positive end-expiratory pressure (PEEPe): This is the airway pressure applied at the end of exhalation by the respiratory support device during mechanical ventilation to keep the airway pressure above atmospheric pressure. Its set value is usually adjusted according to the specific condition and needs of the patient. Intrinsic positive end-expiratory pressure (PEEPi): This is the positive pressure remaining in the airway at the end of exhalation caused by the patient's own factors (such as airway stenosis, insufficient exhalation time, etc.). The presence of intrinsic PEEP increases the work of breathing and may affect hemodynamics. In practical applications, by measuring the total PEEP, the respiratory support device enables medical staff to understand the alveolar pressure at the end of exhalation of the patient, thereby guiding the adjustment of the parameters of the respiratory support device.
[0073] The transpulmonary pressure at the end of exhalation represents the pressure difference between the total PEEP and the esophageal pressure at the end of exhalation. This pressure difference reflects the pressure exerted on the patient's lungs to expand outward or retract inward at the end of exhalation.
[0074] In this embodiment, when performing an inspiratory hold on the patient according to the inspiratory hold reference duration or the inspiratory hold target duration, the plateau pressure and the static compliance are calculated respectively and displayed on the operation interface. The plateau pressure is the data obtained by measuring the airway pressure through a pressure sensor when the airflow is zero during the inspiratory hold; the static compliance can be determined according to the following formula:
[0075] Cstat = Vt / (Pplat - PEEP) (6)
[0076] It should be noted that the plateau pressure represents the pressure measured at the airway opening when the airway airflow is zero (or there is no airflow) at the end of inspiration during mechanical ventilation, and it reflects the pressure state of the alveoli at the end of inspiration. In practical applications, the plateau pressure is affected by various factors, including static compliance, PEEP, tidal volume, and inspiratory flow rate. For example, a decrease in compliance, an increase in PEEP, an increase in tidal volume, and an increase in inspiratory flow rate may all lead to an increase in the plateau pressure.
[0077] It should be noted that static compliance characterizes the response degree of the respiratory system (including the lungs and chest wall) to pressure changes under the condition of no air flow. In practical applications, static compliance is calculated by tidal volume / (plateau pressure - positive end-expiratory pressure). Static compliance is affected by various factors, including age, gender, height, and disease status, etc. For example, with the increase of age, the elasticity and resistance of alveoli may gradually decline, resulting in a decrease in static compliance. For another example, factors such as gender and height may also affect static compliance. For another example, in a disease state, such as pulmonary fibrosis or edema, etc., static compliance may be significantly reduced.
[0078] In this embodiment, the respiratory support device is configured with a breath-hold manual control button for the user to manually start and end breath-holding.
[0079] Specifically, the breath-hold manual control button includes an inhalation-hold virtual button or an inhalation-hold physical button; after the inhalation-hold virtual button or the inhalation-hold physical button is pressed by the user, inhalation-holding for the patient starts, and after the inhalation-hold virtual button or the inhalation-hold physical button is released by the user, inhalation-holding ends; and / or,
[0080] The breath-hold manual control button includes an exhalation-hold virtual button or an exhalation-hold physical button; after the exhalation-hold virtual button or the exhalation-hold physical button is pressed by the user, exhalation-holding for the patient starts, and after the exhalation-hold virtual button or the exhalation-hold physical button is released by the user, exhalation-holding ends.
[0081] It should be noted that the inhalation-hold virtual button represents a virtual button displayed on the operation interface, and the user can trigger inhalation-holding by touching a specific area on the operation interface. The exhalation-hold virtual button represents a virtual button displayed on the operation interface, and the user can trigger exhalation-holding by touching a specific area on the operation interface.
[0082] In practical applications, when the user (medical staff) cannot accurately judge the reference duration of inhalation-holding and / or the reference duration of exhalation-holding, that is, the user cannot determine whether the reference duration of inhalation-holding and / or the reference duration of exhalation-holding is suitable for the current patient. To avoid the medical risks brought by such unexpected situations, the respiratory support device of the present application is configured with a breath-hold manual control button, that is, a temporary control function. When the user (medical staff) faces such a sudden situation, just press the breath-hold manual control button, and the inhalation-holding or exhalation-holding function can be immediately executed; when the patient needs to end this function, just lift the button by the user. This immediate-response control method enables medical staff to quickly treat the patient in an emergency, thus ensuring the life safety of the patient.
[0083] In practical applications, when the user cannot accurately judge the reference duration of inspiration hold and / or the reference duration of expiration hold, and needs to operate the inspiration / expiration hold function, the user can directly long-press the [Start] button on the operation interface of the respiratory support device for a period of time, such as 3 seconds or 5 seconds, to start the inspiration hold or expiration hold function; when the user determines according to the clinical response of the patient that the patient no longer needs to continue the inspiration hold or expiration hold, directly lift the button to end the inspiration hold or expiration hold. In this way, it helps medical staff to perform respiratory treatment / respiratory support on patients in case of emergencies.
[0084] This embodiment discloses a control method for the inspiration / expiration hold function, which is applied to a respiratory support device. The method includes: obtaining ventilation parameters generated by the respiratory support device in real time; calculating the reference duration of inspiration hold and / or the reference duration of expiration hold according to the ventilation parameters; displaying the reference duration of inspiration hold and / or the reference duration of expiration hold on the operation interface; receiving an instruction to start inspiration hold, and in response to this instruction, performing inspiration hold on the patient according to the reference duration of inspiration hold, and ending the inspiration hold after the inspiration hold lasts for the reference duration of inspiration hold; and / or receiving an instruction to start expiration hold, and in response to this instruction, performing expiration hold on the patient according to the reference duration of expiration hold, and ending the expiration hold after the expiration hold lasts for the reference duration of expiration hold. The respiratory support device can directly calculate the reference duration of inspiration hold and / or the reference duration of expiration hold according to the ventilation parameters. In this way, after the respiratory support device receives the relevant instruction from the user, it can perform inspiration hold on the patient according to the reference duration of inspiration hold, or perform expiration hold on the patient according to the reference duration of expiration hold, thereby avoiding the user from continuously manually controlling the inspiration hold or expiration hold. In this way, the automation degree of the inspiration / expiration hold function of the respiratory support device is improved.
[0085] Embodiment 2:
[0086] This embodiment provides a respiratory support device, which includes:
[0087] A ventilation module, configured to be connected to a patient through a ventilation pipeline to provide respiratory support for the patient.
[0088] A detection system, configured to perform detection when the ventilation module provides respiratory support for the patient to obtain ventilation parameters.
[0089] In this embodiment, the ventilation parameters include: airway pressure parameters, tidal volume parameters, positive end-expiratory pressure parameters, and esophageal pressure parameters.
[0090] It should be noted that the airway pressure parameter characterizes the pressure parameter generated by the gas delivered by the respiratory support device using mechanical ventilation to the patient, usually measured in centimeters of water column (cmH2O). It is an important indicator for the respiratory support device to monitor and adjust the respiratory function, reflecting the operation of the human respiratory system and the strength and stability of the gas output by the ventilator. In practical applications, users monitor the changes in the airway pressure of the patient through the respiratory support device to understand the pressure requirements of the patient during inhalation and exhalation.
[0091] It should be noted that the tidal volume parameter characterizes the volume of gas inhaled or exhaled by the patient during each quiet breath. In practical applications, users monitor the tidal volume of the patient's each breath through the respiratory support device to check whether the patient suffers from respiratory diseases such as interstitial pneumonia and chronic obstructive pulmonary disease.
[0092] It should be noted that the positive end-expiratory pressure parameter characterizes the exogenous pressure applied to the airway through the respiratory support device at the end of exhalation during mechanical ventilation, so that the alveoli maintain a certain positive pressure level at the end of exhalation. In practical applications, users can select an appropriate positive end-expiratory pressure to reopen the poorly ventilated alveoli, maintain the tension of the alveoli, thereby improving lung compliance, preventing alveolar collapse, correcting the ventilation / perfusion ratio imbalance, increasing oxygen transport and diffusion, and improving hypoxemia.
[0093] It should be noted that the esophageal pressure parameter characterizes the pressure parameter in the esophagus. In practical applications, after monitoring the esophageal pressure, medical staff can more accurately understand the functional status of the patient's respiratory system.
[0094] Human-machine interaction device.
[0095] A controller, configured to: calculate an inspiratory hold reference duration and / or an expiratory hold reference duration based on ventilation parameters; display the inspiratory hold reference duration and / or the expiratory hold reference duration on the operation interface of the human-machine interaction device.
[0096] Receive an instruction to start inspiratory hold through the human-machine interaction device, and in response to this instruction, perform inspiratory hold on the patient according to the inspiratory hold reference duration, and end the inspiratory hold after the inspiratory hold lasts for the inspiratory hold reference duration; and / or,
[0097] Receive an instruction to start expiratory hold through the human-machine interaction device, and in response to this instruction, perform expiratory hold on the patient according to the expiratory hold reference duration, and end the expiratory hold after the expiratory hold lasts for the expiratory hold reference duration.
[0098] It should be noted that the reference inhalation hold duration represents the time period from the end of exhalation to the start of the next exhalation in a normal breathing cycle. In practical applications, the inhalation time of a normal person is mostly about 2 to 4 seconds. In practical applications, the inhalation time is affected by various factors. For example, physiological factors: physiological characteristics such as age, gender, and body type will affect the inhalation time. For example, young people and those with a larger body size may have a longer inhalation time; while children and infants have a shorter inhalation time. Another example is health status: certain diseases, such as asthma and chronic obstructive pulmonary disease, may cause the inhalation time to become longer. These diseases will affect the function of the respiratory system, thereby affecting the inhalation time.
[0099] It should be noted that the reference exhalation hold duration represents the time duration of the exhalation phase during the breathing process. In practical applications, for a healthy adult, during a vital capacity test, the maximum exhalation time (i.e., the time that can continuously exhale) should generally be between 6 and 9 seconds. This means that the time from maximum inhalation to completely exhaling the gas in the lungs should exceed 6 seconds. In practical applications, the exhalation time is affected by various factors. For example, physiological characteristics such as age, gender, and weight will affect the exhalation time. For example, men usually have a longer exhalation time than women; older people usually have a longer exhalation time than younger people. Another example is health status: certain diseases, such as chronic obstructive pulmonary disease and asthma, may cause the exhalation time to be shortened because airway stenosis or obstruction will increase the resistance of exhalation.
[0100] In practical applications, when the respiratory support device receives an instruction to start an inhalation hold, the respiratory support device will perform an inhalation hold on the patient according to the reference inhalation hold duration and automatically end the inhalation hold after the inhalation hold has lasted for the reference inhalation hold duration. In this way, the user only needs to transmit an instruction to start an inhalation hold to the respiratory support device to achieve automatic control of the inhalation hold for the patient. In this way, the automation degree of the inhalation hold function of the respiratory support device is improved.
[0101] In practical applications, when the respiratory support device receives an instruction to start an exhalation hold, the respiratory support device will perform an exhalation hold on the patient according to the reference exhalation hold duration and automatically end the inhalation hold after the exhalation hold has lasted for the reference exhalation hold duration. In this way, the user only needs to transmit an instruction to start an exhalation hold to the respiratory support device to achieve automatic control of the exhalation hold for the patient. In this way, the automation degree of the exhalation hold function of the respiratory support device is improved.
[0102] This embodiment discloses a respiratory support device, which includes: a ventilation module for connecting to a patient through a ventilation pipeline to provide respiratory support for the patient; a detection system for detecting during the ventilation module provides respiratory support for the patient to obtain ventilation parameters; a human-machine interaction device; and a controller for: calculating an inspiration hold reference duration and / or an expiration hold reference duration according to the ventilation parameters; displaying the inspiration hold reference duration and / or the expiration hold reference duration on an operation interface of the human-machine interaction device; receiving an instruction to start inspiration hold through the human-machine interaction device, and in response to this instruction, performing inspiration hold on the patient according to the inspiration hold reference duration, and ending the inspiration hold after the inspiration hold lasts for the inspiration hold reference duration; and / or receiving an instruction to start expiration hold through the human-machine interaction device, and in response to this instruction, performing expiration hold on the patient according to the expiration hold reference duration, and ending the expiration hold after the expiration hold lasts for the expiration hold reference duration. This respiratory support device can directly calculate the inspiration hold reference duration and / or the expiration hold reference duration according to the ventilation parameters. Thus, after the respiratory support device obtains the relevant instructions from the user, it can perform inspiration hold on the patient according to the inspiration hold reference duration, or perform expiration hold on the patient according to the expiration hold reference duration, thereby avoiding the user continuously manually controlling the inspiration hold or the expiration hold. Thus, the automation degree of the inspiration and expiration hold functions of the respiratory support device is improved.
[0103] Those skilled in the art can understand that all or part of the functions of the above-mentioned methods can be implemented in a hardware manner or in a computer program manner. When all or part of the functions in the above-mentioned embodiments are implemented in a computer program manner, the program can be stored in a computer-readable storage medium, and the storage medium can include: read-only memory, random access memory, magnetic disk, optical disk, hard disk, etc. The above functions are implemented by a computer executing this program. For example, storing the program in the memory of the device, when the processor executes the program in the memory, the above-mentioned all or part of the functions can be implemented. In addition, when all or part of the functions in the above-mentioned embodiments are implemented in a computer program manner, the program can also be stored in a storage medium such as a server, another computer, magnetic disk, optical disk, flash drive or mobile hard disk, and saved to the memory of the local device by downloading or copying, or the system of the local device is updated. When the processor executes the program in the memory, the above-mentioned all or part of the functions in the above-mentioned embodiments can be implemented.
[0104] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art of the present invention, based on the idea of the present invention, several simple deductions, deformations or substitutions can also be made.
Claims
1. A control method for the inhalation and exhalation holding function, which is applied to a respiratory support device, characterized in that, The method includes: Obtaining ventilation parameters generated in real time by a respiratory support device; Calculating an inspiratory hold reference duration and / or an expiratory hold reference duration based on the ventilation parameters; Displaying the inspiratory hold reference duration and / or the expiratory hold reference duration on an operation interface; Receiving an instruction to start an inspiratory hold, and in response to this instruction, performing an inspiratory hold on the patient according to the inspiratory hold reference duration, and ending the inspiratory hold after the inspiratory hold has lasted for the inspiratory hold reference duration; and / or, Receiving an instruction to start an expiratory hold, and in response to this instruction, performing an expiratory hold on the patient according to the expiratory hold reference duration, and ending the expiratory hold after the expiratory hold has lasted for the expiratory hold reference duration.
2. The method according to claim 1, wherein The inspiratory hold reference duration can be determined according to the following formula: Ti_ref = (Vt / Flow) + (Cstat × R) + (Ppeak - PEEP) (1) In formula (1): Vt represents tidal volume (ml); Flow represents inspiratory flow rate (L / min); Cstat represents static compliance (ml / cmH2O); R represents airway resistance (cmH2O / L / s); Ppeak represents peak inspiratory pressure (cmH2O); PEEP represents positive end-expiratory pressure (cmH2O).
3. The method according to claim 1, characterized in that The expiratory hold reference duration can be determined according to the following formula: Te_ref = (Vt / Flow) × (1 + PEEPi / PEEP) + RCexp (2) In formula (2): RCexp=Cstat×Rexp; RCexp represents expiratory time constant; Rexp represents expiratory resistance (cmH2O / L / s); PEEPi represents intrinsic PEEP (cmH2O).
4. The method according to claim 1, characterized in that, The inspiratory hold reference duration and / or the expiratory hold reference duration displayed on the operation interface can be adjusted; the method further includes: Obtaining physiological state information of the patient and displaying it on the operation interface, providing a basis for the user to adjust the inspiratory hold reference duration and / or the expiratory hold reference duration; wherein, the physiological state information includes at least one of: age parameter, weight parameter, disease type, disease symptom; Receiving an instruction from the user to adjust the inspiratory hold reference duration, and in response to this instruction, adjusting the inspiratory hold reference duration to obtain an inspiratory hold target duration; receiving an instruction to start an inspiratory hold, and in response to this instruction, performing an inspiratory hold on the patient according to the inspiratory hold target duration, and ending the inspiratory hold after the inspiratory hold has lasted for the inspiratory hold target duration; and / or, Receiving an instruction from the user to adjust the expiratory hold reference duration, and in response to this instruction, adjusting the expiratory hold reference duration to obtain an expiratory hold target duration; receiving an instruction to start an expiratory hold, and in response to this instruction, performing an expiratory hold on the patient according to the expiratory hold target duration, and ending the expiratory hold after the expiratory hold has lasted for the expiratory hold target duration.
5. The method according to claim 1, wherein the respiratory support device is configured with a breath-hold manual control button for the user to manually start and end breath-holding.
6. The method according to any one of claims 1 to 3, characterized in that, The ventilation parameters include: airway pressure parameter, tidal volume parameter, positive end-expiratory pressure parameter, esophageal pressure parameter.
7. The method according to claim 4, characterized in that, When performing exhalation breath-holding on the patient according to the exhalation breath-holding reference duration or the exhalation breath-holding target duration, intrinsic PEEP, total PEEP, and transpulmonary pressure at end-exhalation are respectively calculated and the intrinsic PEEP, total PEEP, and transpulmonary pressure at end-exhalation are displayed on the operation interface; When performing inhalation breath-holding on the patient according to the inhalation breath-holding reference duration or the inhalation breath-holding target duration, plateau pressure and static compliance are respectively calculated and the plateau pressure and static compliance are displayed on the operation interface.
8. The method according to claim 5, wherein the breath-hold manual control button includes an inhalation breath-hold virtual button or an inhalation breath-hold physical button; the method further includes: after the inhalation breath-hold virtual button or the inhalation breath-hold physical button is pressed by the user, starting to perform inhalation breath-holding on the patient, and after the inhalation breath-hold virtual button or the inhalation breath-hold physical button is released by the user, ending inhalation breath-holding; and / or, the breath-hold manual control button includes an exhalation breath-hold virtual button or an exhalation breath-hold physical button; the method further includes: after the exhalation breath-hold virtual button or the exhalation breath-hold physical button is pressed by the user, starting to perform exhalation breath-holding on the patient, and after the exhalation breath-hold virtual button or the exhalation breath-hold physical button is released by the user, ending exhalation breath-holding.
9. A respiratory support device, characterized in that, The respiratory support device includes: a ventilation module for connecting to the patient through a ventilation pipeline to provide respiratory support for the patient; a detection system for detecting during the ventilation module provides respiratory support for the patient to obtain ventilation parameters; a human-computer interaction device; a controller for: calculating an inhalation breath-holding reference duration and / or an exhalation breath-holding reference duration according to the ventilation parameters; displaying the inhalation breath-holding reference duration and / or the exhalation breath-holding reference duration on the operation interface of the human-computer interaction device; receiving an instruction to start inhalation breath-holding through the human-computer interaction device, in response to this instruction, performing inhalation breath-holding on the patient according to the inhalation breath-holding reference duration, and ending inhalation breath-holding after the inhalation breath-holding lasts for the inhalation breath-holding reference duration; and / or, receiving an instruction to start exhalation breath-holding through the human-computer interaction device, in response to this instruction, performing exhalation breath-holding on the patient according to the exhalation breath-holding reference duration, and ending exhalation breath-holding after the exhalation breath-holding lasts for the exhalation breath-holding reference duration.
10. A computer program product, comprising a computer program and / or instructions, characterized in that, The computer program and / or instruction, when executed by a processor, implement the method according to any one of claims 1-8.