A method and device for adjusting the trigger / switching threshold of a ventilator

Abstract

The present invention discloses a method and device for adjusting the trigger / switching threshold of a ventilator. The adjustment method includes the following steps: setting a threshold; processing the threshold; user self-adjustment; and storing the appropriate threshold. The device includes: a threshold setting module, a threshold judgment module, a threshold self-adjustment module, and a storage module. The technical effect of the present invention is as follows: during the user's ventilation process, the user feeds back his or her own breathing condition to the ventilator, and the ventilator adjusts the threshold of the breathing trigger / switching judgment of the next cycle in real time according to the received user feedback threshold, so as to dynamically adjust to a threshold that is most suitable for the user, thereby solving the problem that the trigger / switching threshold of the ventilator cannot be optimally adjusted for different patients and different disease conditions.

Description

Technical Field

[0001] The present invention relates to the field of ventilators, and in particular to a method and device for adjusting a trigger / switching threshold of a ventilator. Background Art

[0002] Because bi-level ventilators typically output higher pressure during the user's inhalation phase and lower pressure during exhalation, the rise and fall of pressure must be based on accurate judgment of the patient's spontaneous breathing phases. If the ventilator cannot accurately judge the inhalation and exhalation phases, the pressure adjustment will conflict with the patient's breathing, resulting in patient-machine asynchrony and causing discomfort to the patient's respiratory treatment. Therefore, the key to achieving human-machine synchronization is to increase and release pressure based on the accurately judged inhalation trigger (Trigger) / expiration switching (Cycle) action. In the process of judging the inhalation trigger and exhalation switching, the setting of the threshold is closely related to the trigger and the speed of the switching.

[0003] If the threshold is set too low, it may cause the trigger / switch to be too early, and when the threshold is set too high, it may cause the trigger / switch to be too late. Both too early and too late will cause human-machine asynchrony, which will have a great impact on the user's respiratory treatment and directly affect the patient's comfort and experience. Therefore, the appropriate threshold setting has a greater impact on the judgment of trigger / switch.

[0004] In actual use, different threshold determination indicators vary depending on the trigger / switch determination method, such as the common flow threshold, tidal volume threshold, and pressure threshold. Thresholds are usually determined based on clinical experience. For example, if a ventilator is set to five gears, each gear is generally in an increasing relationship with the threshold. When the user selects a gear, the threshold value is also determined. In actual user use, since everyone's breathing effort varies, the choice of the most appropriate threshold for different users will also vary greatly.

[0005] Among existing ventilator trigger / switching threshold settings, the following two common options are: 1. Fixed threshold for ventilator trigger / switching: The thresholds for ventilator triggering and switching are fixed values. Once programmed and shipped, they cannot be changed, and users cannot manually adjust them. 2. Adjusting the threshold based on the trigger / switching gear: This method sets the ventilator's trigger / switching gear, such as gears 1-5, with each gear having a corresponding threshold. For example, for flow triggering, in gears 1-5, the thresholds are 8ml, 9ml, 10ml, 11ml, and 12ml. If the current inhalation trigger gear is set to gear 2, the ventilator triggers inhalation when the detected patient-side inhalation flow exceeds 9ml. The advantages and disadvantages of these two options are: Option 1 has the advantage of simplicity and convenience, with a fixed threshold. However, its disadvantages are obvious: the trigger / switching threshold cannot be adjusted, the functionality is relatively limited, and the user's breathing experience is poor. Although Option 2 allows for threshold adjustment via gear, there are only a few gears, which cannot meet the needs of all users. Users can only select a threshold that is close to their own breathing effort, leaving the user's respiratory therapy effect and ventilator experience still needing improvement. A common disadvantage of both methods is that once the threshold or gear is determined, the user cannot adjust the threshold based on their actual breathing situation to find the breathing / switching threshold that best suits them. Summary of the Invention

[0006] In view of the current state of the art, the present invention proposes a method and device for adjusting the trigger switching threshold, which aims to solve the problem that the trigger / switching threshold of the ventilator cannot be optimally adjusted for different patients and different disease conditions.

[0007] The technical solutions of the present invention are as follows:

[0008] A method for adjusting a ventilator trigger / switching threshold comprises the following steps:

[0009] Step 1, setting a threshold: the user operates the ventilator, sets a trigger or switching threshold, and sends the threshold to the threshold processing unit of the ventilation module of the ventilator;

[0010] Step 2: Process the threshold: determine whether the threshold is a threshold adjusted by user feedback or an initialized default threshold. If it is a threshold adjusted by user feedback, use the threshold adjusted by user feedback for triggering / switching judgment; if it is an initialized default threshold, discard the currently issued default threshold and load the last saved confirmation threshold for triggering judgment, or use the default threshold;

[0011] Step 3: After using the threshold processed in step 2 to determine the triggering / switching of breathing, the user enters the self-adjustment process: the user uses the feedback adjustment device to adjust the threshold up or down according to the actual breathing effect. When the user adjusts to an appropriate threshold, the adjustment is confirmed to be successful and fed back to the ventilator, and then confirmed by the user himself;

[0012] Step 4: After the confirmation of the appropriate threshold is completed, the software sets the threshold confirmation flag bit to 1 and stores the appropriate threshold.

[0013] Furthermore, step 2 specifically includes the following steps:

[0014] Step 21: Determine whether the received threshold value is within a set threshold value range, process the threshold value within the threshold value range, and do not process the threshold value outside the threshold value range;

[0015] Step 22: Determine by the initial mark bit whether the threshold is the threshold adjusted by user feedback or the initialized default threshold: if the initial mark bit is 0, it is the default threshold, and the user continues to confirm and judge the threshold confirmation mark bit; if the initial mark bit is 1, it is the adjustment threshold of user feedback, indicating that the user is adjusting, and at this time, reset the threshold confirmation mark bit to 0, and use the threshold after user feedback for triggering / switching judgment.

[0016] Furthermore, in step 22, if the initial mark bit is 0, it is the default threshold, and the specific steps for the user to continue to confirm and judge the threshold confirmation mark bit are: when the threshold confirmation mark bit is 1, it means that the user has adjusted the threshold before, then the default threshold issued in step 1 is discarded, and the last saved confirmation threshold is loaded for trigger judgment; when the threshold confirmation mark bit is 0, it means that there is no user-adjusted threshold, and the default threshold is used.

[0017] Furthermore, in step 3, the user uses the feedback adjustment device to adjust the threshold up or down according to the actual breathing effect, including two situations: the user uses the human-computer interaction interface or the feedback adjustment hardware device to adjust the threshold up or down.

[0018] Furthermore, in step 1, the user operates the ventilator through the human-computer interaction interface to set the triggering or switching threshold.

[0019] Furthermore, the threshold is a default parameter or a threshold parameter saved in a previous ventilation record.

[0020] The present invention also discloses a ventilator trigger / switching threshold adjustment device, comprising:

[0021] A threshold setting module, configured to set a trigger or switching threshold and send the threshold to a threshold processing unit of a ventilation module of the ventilator;

[0022] A threshold judgment module is used to judge whether the threshold is a threshold adjusted by user feedback or an initialized default threshold. If it is a threshold adjusted by user feedback, the threshold adjusted by user feedback is used for trigger / switching judgment; if it is an initialized default threshold, the currently issued default threshold is discarded and the last saved confirmation threshold is loaded for trigger judgment, or the default threshold is used;

[0023] The threshold self-adjustment module is used to: use the feedback adjustment device to adjust the threshold up or down according to the actual breathing effect. When it is adjusted to an appropriate threshold, it confirms the success of the adjustment and feeds back to the ventilator;

[0024] The storage module is used for: after the confirmation of the appropriate threshold value is completed, the software sets the threshold value confirmation flag bit to 1 and stores the appropriate threshold value.

[0025] Furthermore, the threshold is adjusted up or down according to the actual breathing effect by using the feedback adjustment device, including two situations: the user uses the human-computer interaction interface or the feedback adjustment hardware device to adjust the threshold up or down.

[0026] Furthermore, the user operates the ventilator through the human-computer interaction interface and sets the triggering or switching threshold.

[0027] Furthermore, the threshold is a default parameter or a threshold parameter saved in a previous ventilation record.

[0028] The technical effects of the present invention are as follows: (1) The threshold is adjusted by the user's feedback on the actual breathing feeling until the most appropriate threshold is found, and the threshold is saved for subsequent ventilation use. Compared with the previous method of fixed or unadjustable thresholds, the greatest advantage of this method is that the threshold is flexible and adjustable, with a human-computer interactive feedback adjustment mechanism, and the threshold can be adjusted at any time according to the breathing condition. The usage scenarios are changeable and replaceable, which improves the user's comfort and experience. (2) During the adjustment process, the user can adjust the threshold size through the human-computer interchangeable interface and can control the start / end of the adjustment process. This human-computer interactive feedback adjustment device enables each user to find the most appropriate threshold for themselves, making the adjustment of the ventilator more humane. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a flow chart of the method of the present invention;

[0030] Figure 2 This is a device module diagram of the present invention. DETAILED DESCRIPTION

[0031] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] refer to Figure 1 The present invention discloses a method for adjusting a ventilator trigger / switching threshold, comprising:

[0034] Step 1, setting a threshold: the user operates the ventilator, sets a trigger or switching threshold, and sends the threshold to the threshold processing unit of the ventilation module of the ventilator;

[0035] Step 2: Process the threshold: determine whether the threshold is a threshold adjusted by user feedback or an initialized default threshold. If it is a threshold adjusted by user feedback, use the threshold adjusted by user feedback for triggering / switching judgment; if it is an initialized default threshold, discard the currently issued default threshold and load the last saved confirmation threshold for triggering judgment, or use the default threshold;

[0036] Step 3: After using the threshold processed in step 2 to determine the triggering / switching of breathing, the user enters the self-adjustment process: the user uses the feedback adjustment device to adjust the threshold up or down according to the actual breathing effect. When the user adjusts to the appropriate threshold, the adjustment is confirmed to be successful and fed back to the ventilator, and then confirmed by the user;

[0037] Step 4: After the confirmation of the appropriate threshold is completed, the threshold confirmation flag is set to 1, and the appropriate threshold is stored.

[0038] Specifically, in step 1, the user can set a trigger or switching threshold through a human-computer interaction interface, such as a screen input module, PC input, etc.

[0039] Specifically, step 2 can be divided into the following steps:

[0040] Step 21: Determine whether the received threshold is within the set threshold range, process the threshold within the threshold range, and do not process the threshold outside the threshold range. This step is threshold clamping processing.

[0041] Step 22: Determine by the initial mark bit whether the threshold is the threshold adjusted by user feedback or the initialized default threshold: if the initial mark bit is 0, it is the default threshold, and the user continues to confirm and judge the threshold confirmation mark bit; if the initial mark bit is 1, it is the adjustment threshold of user feedback, indicating that the user is adjusting, and at this time, reset the threshold confirmation mark bit to 0, and use the threshold after user feedback for triggering / switching judgment.

[0042] Furthermore, in step 22, if the initial mark bit is 0, it is the default threshold, and the specific steps for the user to continue to confirm and judge the threshold confirmation mark bit are: when the threshold confirmation mark bit is 1, it means that the user has adjusted the threshold before, then the default threshold issued in step 1 is discarded, and the last saved confirmation threshold is loaded for trigger judgment; when the threshold confirmation mark bit is 0, it means that there is no user-adjusted threshold, and the default threshold is used.

[0043] In addition, in step 3, the user uses the feedback adjustment device to adjust the threshold up or down according to the actual breathing effect, including two situations: the first is that the user has self-awareness and can conveniently operate the ventilator. This type of user can complete the feedback adjustment of the threshold without external auxiliary hardware. For example, through the human-computer interaction interface of the UI, the start, confirmation, and increase and decrease of the adjustment are all completed through the UI controls. The second is that the user has self-awareness but it is inconvenient to adjust the settings of the UI, such as before going to sleep or when they have difficulty in moving. In such scenarios, the user can connect an external feedback adjustment hardware device to operate. One end of the feedback adjustment hardware device receives the user's input information, and the other end transmits information with the ventilator via wired or wireless means. Specifically, the feedback adjustment hardware device is a hardware module with four function buttons, one end of which is connected to the ventilator and the other end is connected to the user. When the user makes adjustments, they can complete the threshold adjustment start, confirmation, increase and decrease adjustment operations by pressing these four buttons.

[0044] In step 4, after the threshold is confirmed, the software sets the threshold confirmation flag to 1 and stores the threshold after confirmation, so that the same user does not need to adjust the threshold again after each ventilation start.

[0045] Furthermore, in step 1, the threshold is not obtained from user feedback, but is a default parameter or a threshold parameter saved in a previous ventilation record.

[0046] refer to Figure 2 The present invention also discloses a ventilator trigger / switching threshold adjustment device, comprising:

[0047] A threshold setting module, configured to set a trigger or switching threshold and send the threshold to a threshold processing unit of a ventilation module of the ventilator;

[0048] A threshold judgment module is used to judge whether the threshold is a threshold adjusted by user feedback or an initialized default threshold. If it is a threshold adjusted by user feedback, the threshold adjusted by user feedback is used for trigger / switching judgment; if it is an initialized default threshold, the currently issued default threshold is discarded and the last saved confirmation threshold is loaded for trigger judgment, or the default threshold is used;

[0049] The threshold self-adjustment module is used to: use the feedback adjustment device to increase or decrease the threshold according to the actual breathing effect. When it is adjusted to an appropriate threshold, it confirms that the adjustment is successful and feeds back to the ventilator.

[0050] The storage module is used to: after the confirmation of the appropriate threshold is completed, the software sets the threshold confirmation flag bit to 1 and stores the appropriate threshold so that the same user can directly call the stored appropriate threshold the next time it is used.

[0051] Furthermore, the threshold value can be adjusted upward or downward using a feedback adjustment device based on actual breathing performance. This can be done in two ways: the user can adjust the threshold value upward or downward using a human-computer interaction interface or a feedback adjustment hardware device. Adjustment using feedback adjustment hardware has been previously described and will not be repeated here.

[0052] Furthermore, the user operates the ventilator through the human-computer interaction interface and sets the triggering or switching threshold.

[0053] Furthermore, the threshold is a default parameter or a threshold parameter saved in a previous ventilation record.

[0054] The technical effects achieved by this method and device are as follows: (1) The threshold value is adjusted by the user's feedback on the actual breathing feeling until the most appropriate threshold value is found, and the threshold value is saved for subsequent ventilation use. Compared with the previous method of fixed or unadjustable threshold value, the greatest advantage of this method is that the threshold value is flexible and adjustable, with a human-computer interactive feedback adjustment mechanism, and the threshold value can be adjusted at any time according to the breathing condition. The usage scenarios are changeable and replaceable, which improves the user's comfort and experience. (2) During the adjustment process, the user can adjust the threshold value through the human-computer exchange interface and can control the start / end of the adjustment process. This human-computer interactive feedback adjustment device enables each user to find the most appropriate threshold value for themselves, making the adjustment of the ventilator more humane.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ventilator trigger / switching threshold adjustment device, characterized in that: include: A threshold setting module, configured to set a trigger or switching threshold and send the threshold to a threshold processing unit of a ventilation module of the ventilator; A threshold judgment module is used to judge whether the threshold is a threshold adjusted by user feedback or an initialized default threshold. If it is a threshold adjusted by user feedback, the threshold adjusted by user feedback is used for trigger / switching judgment; if it is an initialized default threshold, the currently issued default threshold is discarded and the last saved confirmation threshold is loaded for trigger judgment, or the default threshold is used; The threshold self-adjustment module is used to: use the feedback adjustment device to adjust the threshold up or down according to the actual breathing effect. When it is adjusted to an appropriate threshold, it confirms the success of the adjustment and feeds back to the ventilator; A storage module, configured to: after the confirmation of the appropriate threshold value is completed, set the threshold confirmation flag bit to 1 by software, and store the appropriate threshold value; The threshold judgment module is also used for: Determine whether the received threshold is within a set threshold range, process the threshold within the threshold range, and do not process the threshold outside the threshold range; The initial flag bit determines whether the threshold is the threshold adjusted by user feedback or the initialized default threshold: if the initial flag bit is 0, it is the default threshold, and the user continues to confirm and determine the threshold confirmation flag bit; If the initial flag is 1, it is the adjustment threshold fed back by the user, indicating that the user is adjusting. At this time, the threshold confirmation flag is reset to 0, and the threshold fed back by the user is used for triggering / switching judgment.

2. The ventilator trigger / switching threshold adjustment device according to claim 1, characterized in that: The threshold judgment module is also used for: If the initial mark bit is 0, it is the default threshold. The specific steps for the user to continue to confirm and judge the threshold confirmation mark bit are: when the threshold confirmation mark bit is 1, it means that the user has adjusted the threshold before, then the default threshold is discarded, and the last saved confirmation threshold is loaded for trigger judgment; when the threshold confirmation mark bit is 0, it means that there is no user-adjusted threshold, then the default threshold is used.

3. The ventilator trigger / switching threshold adjustment device according to claim 1, characterized in that: The threshold is adjusted up or down according to the actual breathing effect by using the feedback adjustment device, including two situations: The user uses the human-computer interaction interface or the feedback adjustment hardware device to adjust the threshold up or down.

4. The ventilator trigger / switching threshold adjustment device according to claim 1, characterized in that: The user operates the ventilator through the human-computer interaction interface and sets the trigger or switching threshold.

5. The ventilator trigger / switching threshold adjustment device according to claim 1, characterized in that: The threshold is a default parameter or a threshold parameter saved in a previous ventilation record.

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