WO2023103903A1

WO2023103903A1 - Sleep characteristic-based ventilator regulation and control method and system

Info

Publication number: WO2023103903A1
Application number: PCT/CN2022/136174
Authority: WO
Inventors: 唐雪峰; 楼田甜; 张弘弢; 王晓莉; 张斌; 许晓峰
Original assignee: 南京舒普思达医疗设备有限公司
Priority date: 2021-12-09
Filing date: 2022-12-02
Publication date: 2023-06-15
Also published as: CN113877033A; CN113877033B

Abstract

A sleep characteristic-based ventilator regulation and control method and system. The method comprises: S1, obtaining a user sleep posture; S2, determining, on the basis of the user sleep posture, whether air passages of a pre-worn multi-channel breathing mask are suspected of being compressed, and controlling an electric control valve pre-installed in the air passage to open the air passage that is not suspected of being compressed; the breathing mask being provided with multiple air passages communicated with a ventilator, at least two of the air passages being located on both sides of a face, at least one of the air passages extends out of the top of a head, and electric control valves for controlling the opening and closing being respectively mounted in the air passages; S3, obtaining parameters of the ventilator; S4, calculating, on the basis of the parameters of the ventilator, a change amount of the pressure and/or flow before and after air passage switching of the breathing mask; and S5, determining whether the change amount is greater than a threshold, and if yes, marking current-stage data as sleep posture interference data, and sending an update instruction of a parameter tuning logical starting point of the ventilator, the starting point being time t1 after the air passage switching. The method has an effect of improving the accuracy of regulation and control of the ventilator.

Description

Ventilator control method and system based on sleep characteristics

technical field

The present application relates to the field of ventilator technology, in particular to a method and system for regulating a ventilator based on sleep characteristics.

Background technique

Sleep apnea-hypopnea syndrome is the narrowing or collapse of the upper airway when a person is sleeping, leading to snoring and apnea during nighttime sleep. Sleep apnea causes recurrent nocturnal hypoxia, which can easily lead to complications such as hypertension, coronary heart disease, diabetes and cerebrovascular disease, traffic accidents, and even sudden death at night.

At present, ventilators are no longer limited to post-traumatic breathing assistance, but are also used to treat the above-mentioned respiratory diseases.

The patent with application number CN201610861972.9 discloses a ventilator adjustment method based on breathing and sleep events and the ventilator. The adjustment method of the ventilator based on breathing and sleep events includes: collecting flow data and pressure data of the ventilator; Analyze whether the user has a sleep breathing event according to the flow data and pressure data, and determine the type of the sleep breathing event when the user has a sleep breathing event; adjust the sleep breathing event according to a predetermined adjustment method corresponding to the type of the sleep breathing event parameters of the ventilator.

In view of the related technologies mentioned above, the inventor believes that it has the following defects: the airway flow and pressure are determined based on the above-mentioned sleep event, and in the sleep state, besides the symptoms of the user's respiratory tract, there are also sleep postures that affect the two parameters, which lead to the impact on breathing. machine control accuracy, so the application proposes a new technical solution.

technical solution

In order to improve the accuracy of regulating the ventilator, the present application provides a method and system for regulating the ventilator based on sleep characteristics.

In the first aspect, the present application provides a method for regulating a ventilator based on sleep characteristics, and adopts the following technical solution:

A ventilator control method based on sleep characteristics, comprising the following steps:

S1. Obtain the sleeping posture of the user;

S2. Determine whether each airway of the pre-worn multi-channel breathing mask is suspected to be pressurized based on the user's sleeping posture, and control an electronically controlled valve pre-installed in the airway to open the non-suspected airway;

Wherein, the breathing mask is configured as follows: there are multiple airways connected to the ventilator, at least two are located on both sides of the face, at least one protrudes from the top of the head, and are respectively equipped with electric control valves for on-off control;

S3, obtain ventilator parameters;

S4. Based on the parameters of the ventilator, calculate the change in pressure and/or flow before and after the airway switching of the breathing mask;

S5. Determine whether the amount of change is greater than the threshold. If so, mark the data at this stage as sleep posture interference data, and send an update command for the starting point of the ventilator adjustment logic, and the starting point is time t1 after the airway switch.

Optionally, also include:

Based on the parameters of the ventilator, determine the start and stop time nodes of the ventilator;

Count the user's sleep posture during each ventilator start-stop cycle, and generate a sleep posture statistical report based on the time axis to assist the user in choosing a breathing mask.

In the second aspect, the present application provides a ventilator control system based on sleep characteristics, which adopts the following technical solution:

A ventilator control system based on sleep characteristics, comprising:

A sleeping posture collection group, which is configured to: collect the sleeping posture of the user;

The posture interference analysis module is connected to the sleep posture collection group, the ventilator and the electric control valve of a preset multi-airway breathing mask, and is configured to determine the user's sleep posture according to the feedback information of the sleep posture collection group , determine whether each airway of the breathing mask is suspected to be under pressure based on the user's sleeping posture, and control an electronically controlled valve pre-installed in the airway to open the airway that is not suspected to be under pressure; and,

It is used to obtain ventilator parameters, calculate the change of pressure and/or flow before and after the airway switching of the breathing mask, and judge whether the change is greater than the threshold. If so, mark the data at this stage as sleep posture interference data and send it to the ventilator The starting point of the parameter adjustment logic is to update the command, and the starting point is the time t1 after the airway switch.

Optionally, the sleep posture collection group includes a plurality of pressure sensors, at least two pressure sensors are respectively arranged on both sides of the breathing mask, and are respectively located on the two cheek areas of the user; at least one pressure sensor is arranged on the headboard , and facing the user's head.

Optionally, the determining the user's sleep posture according to the feedback information of the sleep posture collection group includes:

Add an identification code based on the position of the pressure sensor relative to the breathing mask;

When the pressure fed back by a pressure sensor is higher than the trigger threshold, identify its pre-bound identification code, obtain the position of the pressure sensor relative to the breathing mask, and determine the sleeping posture as left sleep, right sleep, or top sleep. one or more of .

Optionally, the determining whether each airway of the breathing mask is suspected to be pressurized based on the user's sleeping posture includes:

When the sleeping posture is left sleeping, the airway on the left side of the user's head is suspected to be compressed;

When the sleeping posture is sleeping on the right side, the airway on the right side of the user's head is suspected to be compressed;

When the sleep posture is top pressure sleep, the airway above the user's head is suspected to be compressed.

Optionally, it also includes: a ventilator failure warning sensing unit connected to the posture interference analysis module; the ventilator failure warning sensing unit is embedded in the side of the upper section of the breathing mask facing the user's scalp, and is configured to: sense Whether to keep fit to the human body; the posture interference analysis module is configured to: send a preset early warning plan to the ventilator according to the feedback information from the ventilator failure early warning sensing unit.

Optionally, the attitude interference analysis module is configured to:

Get the current time parameter;

Determine whether the current time parameter meets the preset deep rest period, if yes, use the shutdown trigger command as an early warning plan; if not, use the alarm trigger command as an early warning plan.

Optionally, the attitude interference analysis module is also connected to the wireless communication module, and is configured to:

Before using the shutdown trigger command as an early warning plan, obtain human-computer interaction records to determine whether there is a security administrator preset, and if so, send the administrator prompt trigger command to the pre-connected cloud, and delay T time to generate an early warning plan.

Beneficial effect

To sum up, the application includes at least one of the following beneficial technical effects: After the application is applied to a ventilator, the airway of the breathing mask that is effectively connected to the ventilator can be adjusted based on the user's sleep characteristics (posture), reducing the risk of breathing during sleep. Posture changes, the interference caused by inadvertently compressing the air and bending the airway, make the application range and effect of the ventilator better. interference, so that the adjustment of the ventilator is more accurate.

Description of drawings

Fig. 1 is the structural representation of the breathing mask of the present application;

Fig. 2 is a schematic flow chart of the method of the present application;

FIG. 3 is a schematic diagram of the system architecture of the present application.

BEST MODE FOR CARRYING OUT THE INVENTION

The present application will be described in further detail below in conjunction with accompanying drawings 1-3.

The embodiment of the present application discloses a breathing mask.

Referring to Fig. 1, the breathing mask includes a nasal aspirator and a ventilation ring designed around the contour of the human face. The airway interface is fixed, and the airway interface on both sides is a flat structure to reduce discomfort during wearing.

When in use, the ventilation ring covers the contour of the user's face, the nasal aspirator is placed in the lower part of the nasal cavity, and connects to the nasal cavity through a rubber mouth that fits the user's nostrils; the ventilation ring extends from both ends of the nasal aspirator along the cheeks to the top of the head; according to the user's wearing Custom, the ventilation loop can be bypassed behind the ear if necessary.

It should be noted that the ventilation ring is made of elastic rubber to reduce discomfort when sleeping on the side.

The embodiment of the present application discloses a method for regulating a ventilator based on sleep characteristics.

Referring to Fig. 2, the ventilator control method based on sleep characteristics comprises the following steps:

S1. Obtain the user's sleeping posture; in this embodiment, the sleeping postures include left sleep, right sleep and pressing sleep, wherein the pressing sleep is when the head is close to the headboard or even pressed against the headboard.

Wherein, the breathing mask is as described in the previous embodiment, and its airway interface communicates with the airway and the ventilator, and an electrically controlled valve, such as a solenoid valve, is installed on the connection part to control the opening and closing of the airway.

S3. Obtain ventilator parameters; it is understandable that ventilator parameters include airway pressure, flow rate, flow rate, tidal value and other parameters. The following mainly applies pressure and flow rate, and some ventilator differences. Flow rate can be replaced by flow rate. The pipeline flow formula can be converted.

It can be understood that the front and back here are within n breathing cycles (n is a preset integer), which is at least one ventilator pressure adjustment cycle. Regarding the pressure adjustment of the ventilator, the ventilator in this embodiment automatically titrates the pressure, and takes the titration logic in another application of the applicant as an example:

Start titration from 4 cmH2O in CPAP mode, if more than five minutes occurs: ① more than two obstructive apneas; or ② more than three hypopneas; or ③ more than 5 RERAs, then increase 1 cmH2O. If CPAP has reached 15cmH2O and still cannot eliminate the obstructive respiratory event, switch the ventilator to BPAP mode. If no obstructive respiratory event occurs within 30 minutes, gradually reduce CPAP until obstructive respiratory event occurs again.

Among them, the t1 time is determined by the cumulative machine response, electronic control valve response, and airway switching pressure delay, and the theoretical value of verification is <2s.

According to the above content, after this method is applied to the ventilator, it can adjust the airway of the breathing mask effectively connected to the ventilator based on the user's sleep characteristics (posture), reduce the posture change during sleep, accidentally compress the air, and bend the airway The interference caused by the ventilator makes the application range and effect of the ventilator better; at the same time, the starting point of the ventilator’s parameter adjustment logic can be adjusted accordingly to reduce the interference caused by non-breathing features to the parameter adjustment logic, so that the ventilator can be adjusted more accurately.

The method also includes:

Count the user's sleep posture in each ventilator start-stop cycle, and generate a sleep posture statistical report based on the time axis.

Among them, the start-stop time node of the ventilator can be determined by the time point of the appearance and disappearance of a numerical value such as pressure, or the start-stop signal of the machine.

Regarding the statistical report of sleep posture, its function in this implementation, in addition to the sleep reports of other ventilators on the market, is used to consider the quality of sleep, and more importantly, it is used for users to understand their own sleep characteristics and choose based on sleep characteristics Breathing mask.

The breathing mask of the previous embodiment is used as an initial general-purpose mask. After the user applies this method for a period of time, the breathing mask is selected according to the sleep posture statistical report. For example, the proportion of sleeping on the back is large during sleep, and there are few, or even no top press bed. For the recording of the head plate, choose a breathing mask with only the top airway, or remove the airways on both sides of the above breathing mask to improve comfort.

It can be understood that in extreme cases, all three airways are suspected to be under pressure; at this time, this method is preferably switched to open the airway at the top of the breathing mask to ensure the use of the ventilator.

The embodiment of the present application discloses a ventilator control system based on sleep characteristics.

Referring to Figure 3, the ventilator control system based on sleep characteristics includes:

The posture interference analysis module is connected to the sleep posture collection group, the ventilator, and the electronic control valve of the breathing mask described in the foregoing embodiments, and is configured to: determine the user's sleep posture according to the feedback information of the sleep posture collection group, based on The user's sleeping posture determines whether each airway of the breathing mask is suspected to be pressurized, and controls an electronically controlled valve pre-installed in the airway to open the non-suspected airway; and,

Regarding the sleep posture collection group, in order to reduce the hindrance of personal privacy to this application, the sleep posture collection/acquisition in this application is not to collect the user's sleep picture through the camera, and the image analysis and recognition, but to use pressure, exercise, and distance. Any one or more pieces of information are determined. In this embodiment, pressure is taken as an example. At this time, the sleep posture collection group includes a plurality of pressure sensors,

At least two pressure sensors are respectively arranged on both sides of the breathing mask, and are respectively located on two cheek regions of the user; at least one pressure sensor is arranged on the headboard of the bed, and faces the user's head.

The sensor in the cheek area is specifically: a film-type pressure sensor, which is attached to the outer wall of the above-mentioned ventilation ring and fixed. It can be understood that there are many ways to return the signal of the thin-film pressure sensor, and the present embodiment is preferably as follows:

The top of the breathing mask is equipped with a small bluetooth unit integrated board, and the wire of the thin-film pressure sensor extends along the breathing mask to connect to the bluetooth unit; Unfavorable wire connection, such as pulling off the wire.

The sensor of the headboard is specifically: equipped with double-layer elastic thin plates, the sensor is placed between the double-layer thin plates, and the edge of the gap between the two thin plates is bonded with elastic adhesive strips; and the double-layer thin plates are bonded and bound. Fixes to the user-selected headboard area. When the user is sleeping, move the head upwards to press the thin plate, even if the sensor is stressed.

It should be noted that the above-mentioned double-layer elastic sheet should be installed higher than the user's pillow to reduce interference.

On the basis of the above, determining the user's sleep posture according to the feedback information of the sleep posture collection group includes:

Judging whether each airway of the breathing mask is suspected to be compressed based on the user's sleeping posture includes:

It can be understood that the attitude interference analysis module is a processing module, such as a control board integrated with an MCU, which is installed in an adapted box, placed near the ventilator, and only needs to be connected to the ventilator.

The system also includes a ventilator failure warning sensing unit connected to the posture interference analysis module; the ventilator failure warning sensing unit is embedded in the side of the upper part of the breathing mask facing the user's scalp, which can be an infrared sensor, a pressure sensor, a distance Any one of the sensors, and is configured to sense whether it is kept in close contact with the human body.

Based on the above, the posture interference analysis module is configured to: send a preset early warning plan to the ventilator according to the feedback information from the ventilator failure warning sensing unit.

Regarding the early warning plan, specifically, the attitude interference analysis module is configured as:

Get the current time parameter;

That is, the system can find out whether the breathing mask is effectively worn, whether the ventilator is effective, and respond in time; if the time is in the deep rest period, it will control the ventilator to stop, so as to reduce the loss and not disturb the user's rest; and During non-deep rest periods, the alarm function of the ventilator is controlled to be turned on in time to call relevant personnel to deal with it in time.

Considering the safety of some special groups of people, such as some elderly people and patients with deep sleep-disordered breathing, the system also includes: a wireless communication module connected to the posture interference analysis module. The posture interference analysis module is configured as:

Before using the shutdown trigger command as an early warning plan, obtain the human-computer interaction record to determine whether there is a security administrator preset, and if so, send the administrator prompt trigger command to the pre-connected cloud, and delay T time (eg: 30min) Create an early warning plan.

It is understandable that the cloud is set to receive prompts from administrators to trigger commands, and then send reminders to the pre-bound administrators through the communication network, such as SMS notifications, APP internal push messages, etc.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims

A ventilator control method based on sleep characteristics, is characterized in that, comprises the following steps:

S1. Obtain the sleeping posture of the user;

S2. Determine whether each airway of the pre-worn multi-channel breathing mask is suspected to be pressurized based on the user's sleeping posture, and control an electronically controlled valve pre-installed in the airway to open the non-suspected airway;

Wherein, the breathing mask is configured as follows: there are multiple airways connected to the ventilator, at least two are located on both sides of the face, at least one protrudes from the top of the head, and are respectively equipped with electric control valves for on-off control;

S3. Obtain ventilator parameters;

S4. Based on the parameters of the ventilator, calculate the change in pressure and/or flow before and after the airway switching of the breathing mask;

S5. Determine whether the amount of change is greater than the threshold. If so, mark the data at this stage as sleep posture interference data, and send an update command for the starting point of the ventilator adjustment logic, and the starting point is time t1 after the airway switch.
The ventilator control method based on sleep characteristics according to claim 1, further comprising:

Based on the parameters of the ventilator, determine the start and stop time nodes of the ventilator;

Count the user's sleep posture during each ventilator start-stop cycle, and generate a sleep posture statistical report based on the time axis to assist the user in choosing a breathing mask.
A ventilator control system based on sleep characteristics, characterized in that it includes:

A sleeping posture collection group, which is configured to: collect the sleeping posture of the user;

The posture interference analysis module is connected to the sleep posture collection group, the ventilator and the electric control valve of a preset multi-airway breathing mask, and is configured to determine the user's sleep posture according to the feedback information of the sleep posture collection group , determine whether each airway of the breathing mask is suspected to be under pressure based on the user's sleeping posture, and control an electronically controlled valve pre-installed in the airway to open the airway that is not suspected to be under pressure; and,

It is used to obtain ventilator parameters, calculate the change of pressure and/or flow before and after the airway switching of the breathing mask, and judge whether the change is greater than the threshold. If so, mark the data at this stage as sleep posture interference data and send it to the ventilator The starting point of the parameter adjustment logic is to update the command, and the starting point is the time t1 after the airway switch.
The ventilator control system based on sleep characteristics according to claim 3, characterized in that: the sleep posture collection group includes a plurality of pressure sensors, at least two pressure sensors are respectively arranged on both sides of the breathing mask, and are respectively located at Two cheek regions of the user; at least one pressure sensor is arranged on the headboard of the bed and faces the head of the user.
The ventilator control system based on sleep characteristics according to claim 4, wherein the determination of the user's sleep posture according to the feedback information of the sleep posture collection group includes:

Add an identification code based on the position of the pressure sensor relative to the breathing mask;

When the pressure fed back by a pressure sensor is higher than the trigger threshold, identify its pre-bound identification code, obtain the position of the pressure sensor relative to the breathing mask, and determine the sleeping posture as left sleep, right sleep, or top sleep. one or more of .
The ventilator control system based on sleep characteristics according to claim 4, wherein the determination of whether each airway of the breathing mask is suspected to be pressurized based on the user's sleep posture includes:

When the sleeping posture is left sleeping, the airway on the left side of the user's head is suspected to be compressed;

When the sleeping posture is sleeping on the right side, the airway on the right side of the user's head is suspected to be compressed;

When the sleep posture is top pressure sleep, the airway above the user's head is suspected to be compressed.
The ventilator control system based on sleep characteristics according to claim 1, further comprising: a ventilator failure warning sensing unit connected to the posture interference analysis module; the ventilator failure warning sensing unit is embedded in the breathing mask The upper section faces the side of the user's scalp, and is configured to sense whether it remains in close contact with the human body; the posture interference analysis module is configured to: send a preset early warning plan according to the feedback information from the ventilator failure early warning sensing unit to the ventilator.
The ventilator control system based on sleep characteristics according to claim 7, wherein the posture interference analysis module is configured to:

Get the current time parameter;

Determine whether the current time parameter meets the preset deep rest period, if yes, use the shutdown trigger command as an early warning plan; if not, use the alarm trigger command as an early warning plan.
The ventilator control system based on sleep characteristics according to claim 8, wherein the posture interference analysis module is also connected to a wireless communication module, and is configured to:

Before using the shutdown trigger command as an early warning plan, obtain the human-computer interaction records to determine whether there is a security administrator preset. If so, send the administrator prompt trigger command to the pre-connected cloud, and delay T time to generate an early warning plan.