Ventilator tube detachment detection method, detachment detection system and related equipment

Abstract

The present invention relates to the technical field of ventilators, and specifically to a method for detecting a ventilator's pipeline detachment, a detachment detection system, and related equipment. The method for detecting a ventilator's pipeline detachment, the detachment detection system, and related equipment of the present invention are suitable for ventilators with gas volume feedback, that is, when the flow in the ventilator pipeline decreases, the ventilator turbine will increase the gas volume to meet the ventilator's gas supply demand as much as possible. By comparing the real-time gas flow value in the ventilator pipeline with the gas flow calibration value, it is specifically determined whether the ventilator's pipeline that has detached is the gas supply pipeline or the pressure pipeline, thereby avoiding the traditional ventilator detection device or detection method that only detects and judges based on pressure, and can only determine that the ventilator pipeline has detached, but cannot subdivide which pipeline has detached, thereby improving the precision and accuracy of the ventilator pipeline detachment alarm.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilators, and in particular to a ventilator pipeline detachment detection method, a detachment detection system and related equipment. Background Art

[0002] The ventilator tube detachment alarm is an essential alarm for ventilators. Accurately reporting the alarm can reduce the risks of ventilator clinical use, reduce labor costs, and provide real-time monitoring of tube detachment.

[0003] Currently known methods for detecting ventilator tube detachment are mostly to compare the pressure at the distal and proximal ends of the ventilator air supply pipeline, and then detect whether the pipeline detachment occurs by comparing the changes in the pressure at the two locations.

[0004] However, the above-mentioned method of using pressure detection still has some problems in actual use. For example, when the ventilator pipeline falls off or the ventilator pressure tube falls off or even the pipeline is blocked and ruptured, the pressure value collected by the pressure sensor will decrease, thereby triggering the ventilator alarm. However, in the above three situations, the latter two do not affect the patient's use of the ventilator in a short period of time. If the alarm is triggered according to the detachment prompt, it will generate detachment judgment interference items, affecting the response speed of medical staff.

[0005] Therefore, it is urgent to provide a detection method that can accurately distinguish which specific type of pipeline is detached. Summary of the Invention

[0006] The present invention provides a method for detecting the detachment of a ventilator's pipeline, a detachment detection system and related equipment to solve the above technical problems.

[0007] In a first aspect, the present invention provides a method for detecting a detachment of a ventilator tube, the ventilator comprising:

[0008] A pressure sensor provided on the pressure line of the ventilator;

[0009] processor; and

[0010] A turbine is connected to an air supply line;

[0011] A flow sensor is also provided at the turbine outlet, and the flow sensor is electrically connected to the processor; and

[0012] When the flow sensor detects that the real-time gas flow value in the gas supply pipeline is less than the gas flow calibration value, the processor controls the turbine to increase the gas volume;

[0013] The pipeline fall-off detection method comprises:

[0014] The processor obtains the real-time pressure value in the ventilator pipeline through the pressure sensor;

[0015] When the real-time pressure value is 0, by comparing the real-time gas flow value with the gas flow calibration value, it can be distinguished whether the ventilator's air supply pipeline or the ventilator's pressure pipeline is detached.

[0016] In a second aspect, the present invention provides a ventilator, comprising:

[0017] A pressure sensor provided on the pressure line of the ventilator;

[0018] processor; and

[0019] A turbine is connected to an air supply line;

[0020] A flow sensor is also provided at the turbine outlet, and the flow sensor is electrically connected to the processor; and

[0021] When the flow sensor detects that the real-time gas flow value in the gas supply pipeline is less than the gas flow calibration value, the processor controls the turbine to increase the gas volume;

[0022] The processor is configured to obtain the real-time pressure value and gas flow calibration value in the ventilator pipeline, and obtain the real-time gas flow value in the ventilator pipeline through the flow sensor, and when the real-time pressure value is 0, by comparing the real-time gas flow value with the gas flow calibration value, it can distinguish whether the ventilator's air supply pipeline or the ventilator's pressure pipeline is detached.

[0023] In a third aspect, the present invention provides a ventilator tube detachment detection system, comprising:

[0024] A processor, the processor being configured to include a real-time pressure value acquisition module, a gas flow calibration setting module, a real-time gas flow acquisition module and a flow comparison and determination module; wherein

[0025] A real-time pressure value acquisition module is configured to acquire a real-time pressure value in a ventilator circuit;

[0026] a gas flow calibration setting module, configured to obtain a gas flow calibration value in a ventilator pipeline;

[0027] A real-time gas flow acquisition module is configured to receive a real-time gas flow value in a ventilator pipeline obtained by a flow sensor;

[0028] The flow comparison and judgment module is configured to be connected to the gas flow calibration setting module and the real-time gas flow acquisition module, and to compare the real-time gas flow value with the gas flow calibration value, thereby outputting a prompt signal that the ventilator gas supply pipeline is detached or a prompt signal that the ventilator pressure pipeline is detached.

[0029] In a fourth aspect, the present invention provides an electronic device comprising: a processor, a readable storage medium, a communication bus, and a communication interface; wherein the processor, the readable storage medium, and the communication interface communicate with each other via the communication bus;

[0030] The readable storage medium is used to store a program for executing a pipeline detachment detection method;

[0031] The processor is configured to obtain a gas flow calibration value in the ventilator circuit, i.e.

[0032] Calculate the gas flow calibration value through the calibration pressure value; Where Flow is the gas flow calibration value, the unit is LPM; K is the flow conversion factor, the unit is LPM; Press is the calibration pressure value, is the pressure calibration coefficient; and the real-time pressure value in the ventilator pipeline is obtained through the pressure sensor, and the real-time gas flow value in the ventilator pipeline is obtained through the flow sensor, and the real-time gas flow value is compared with the gas flow calibration value. When the real-time gas flow value is greater than the gas flow calibration value and the real-time pressure value is 0, it indicates that the air supply pipeline of the ventilator is detached; when the real-time gas flow value is less than or equal to the gas flow calibration value and the real-time pressure value is 0, it indicates that the pressure pipeline of the ventilator is detached.

[0033] The beneficial effect of the present invention is that the pipeline detachment detection method, detachment detection system and related equipment of the ventilator of the present invention obtain the gas flow calibration value suitable for this detection method through the calculation formula of the calibration pressure value, and participate in the comparison operation of the real-time gas flow value and the gas flow calibration value in the ventilator pipeline, so as to specifically and accurately judge whether the detached pipeline of the ventilator is the air supply pipeline or the pressure pipeline, so as to avoid the traditional ventilator detection device or detection method that only detects and judges by pressure, can only judge that the ventilator pipeline has detached, and cannot subdivide which pipeline has detached, thereby improving the precision and accuracy of the ventilator pipeline detachment alarm.

[0034] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 is a schematic structural diagram of a ventilator provided in some embodiments;

[0038] Figure 2 is a flowchart of a method for detecting ventilator tube detachment provided in some embodiments;

[0039] Figure 3 An electronic device is provided in some embodiments.

[0040] In the figure: 1. Pressure pipeline; 2. Air supply pipeline. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] like Figure 1 and Figure 2 As shown, at least one embodiment provides a ventilator, comprising: a turbine, an air supply line 2, a pressure line 1, a pressure sensor, and a flow sensor; the turbine is configured to supply oxygen or air to the patient, the pressure sensor is arranged on the pressure line 1, the flow sensor is arranged at the outlet of the turbine, and is connected to the air supply line 2. At the same time, the pressure line 1 is connected to the air supply line 2, and the pressure sensor and the flow sensor are both electrically connected to the processor.

[0043] Among them, it should be noted that the air flow in the air supply pipe 2 of the ventilator of the present invention can be adjusted by providing gas by the turbine blower, and the positive pressure of the pipe is maintained throughout the breathing cycle. The upper limit threshold of the air flow in the air supply pipe 2 can be set according to the actual air supply capacity of the turbine, and the speed of the turbine can be selected according to the specific requirements of the ventilator. Generally, the higher the turbine speed, the larger the air flow, and the lower the turbine speed, the smaller the air flow. At the same time, the present invention mainly uses the gas flow in the pipe as the decisive condition for judging whether the air supply pipe or the pressure pipe is detached, and the pressure is an auxiliary condition for judgment.

[0044] Specifically, when the flow sensor detects that the real-time gas flow value in the gas supply pipeline is less than the gas flow calibration value, the processor controls the turbine to increase the gas volume.

[0045] The pipeline fall-off detection method comprises:

[0046] The processor obtains the real-time pressure value in the ventilator pipeline through the pressure sensor;

[0047] The processor obtains a gas flow calibration value in a ventilator pipeline; and

[0048] The processor obtains the real-time gas flow value in the ventilator pipeline through the flow sensor;

[0049] When the real-time pressure value is 0, by comparing the real-time gas flow value with the gas flow calibration value, it is possible to distinguish whether the ventilator's air supply pipeline or the ventilator's pressure pipeline is detached.

[0050] In this embodiment, the gas flow calibration value is specifically a preset pipeline gas flow rate that is the gas flow rate that should be in the pipeline under normal gas supply conditions, and is calculated by obtaining a calibration pressure value for controlling the pipeline flow under standard conditions through a pressure sensor:

[0051] in

[0052] Flow is the gas flow calibration value, K is the flow conversion factor, Press is the calibration pressure value,

[0053] is the pressure calibration factor.

[0054] As an optional embodiment, when the obtained calibration pressure value is 4 cmH2O, K is usually taken as 32.5 based on experience, then That is, when the calibration pressure value is 4cmH2O, the corresponding gas flow calibration value should be 65LPM. The optional range of the calibration pressure value is usually 3-40cmH2O. Then the flow conversion factor K will also be changed according to the actual set calibration pressure value based on experience.

[0055] The above-mentioned gas flow calibration value is obtained by comparing the real-time gas flow value with the gas flow calibration value when the real-time pressure value is 0, thereby distinguishing whether the ventilator's air supply pipeline or the ventilator's pressure pipeline is detached, providing the necessary data basis.

[0056] Based on the above gas flow calibration value, this embodiment can distinguish where the ventilator pipeline is falling off through the real-time gas flow value and the real-time pressure value, that is,

[0057] If the real-time pressure value is 0, and the real-time gas flow value is greater than the gas flow calibration value at this time, it is determined that the air supply pipeline 2 of the ventilator is detached. The principle of the above judgment method is that when the air supply pipeline of the ventilator is detached, the gas in the air supply pipeline is lost (the gas in the normal connecting pipeline is always in a positive pressure state. If one end is detached, the gas will be quickly discharged out of the pipe under the action of pressure). When there is insufficient gas in the pipeline, the turbine will increase the pump gas volume to try to compensate for the gas loss. The state presented is that the gas flow in the pipeline increases, and the detection value of the flow sensor increases. Because the air supply pipeline is connected to the pressure pipeline, when the air supply pipeline is detached, there will be no airflow entering the air supply pipeline, and no pressure can be generated. At this time, the value obtained by the pressure sensor is 0.

[0058] If the real-time pressure value reaches 0 and the real-time gas flow value is less than or equal to the gas flow calibration value, it is judged that the pressure pipeline 1 of the ventilator is detached. This is because if the gas supply pipeline 2 is always in a smooth state, the turbine will not increase the pump gas volume, and the gas volume in the gas supply pipeline 2 will always remain stable. However, due to the gap in the pressure pipe, a small amount of gas may be lost from here, and the real-time gas flow in the pipeline will be slightly less than or still equal to the gas flow calibration value (determined by the reading error of the sensor). However, since the pressure pipeline 1 has fallen off, it will lose the pressure generated by the gas circulation at this time, and thus appear to be in a state of 0. Therefore, the real-time gas flow value presented is equal to the gas flow calibration value, but the real-time pressure value is 0.

[0059] In some embodiments, when the calibrated pressure value is set to 4 cmH2O, the gas flow calibration value should be 65 LPM. If only the gas supply line 2 is detached at this time, the real-time gas flow is higher than the gas flow calibration value 65 LPM, and the real-time pressure value is 0, and it is judged that the gas supply line 2 is detached.

[0060] In some embodiments, when the calibrated pressure value is set to 4 cmH2O, the gas flow calibration value should be 65 LPM. If only pressure line 1 is detached at this time, the real-time gas flow is less than or equal to the gas flow calibration value 65 LPM, and the real-time pressure value is 0, and it is judged that pressure line 1 is detached.

[0061] In addition, through program settings, an alarm can be issued when the flow rate in the air supply pipeline 2 of the ventilator of the present invention is greater than the gas calibration flow rate for 300-500 milliseconds. In other words, the ventilator using the pipeline detachment detection method of the present invention is very sensitive and can issue an alarm within 1 second, further ensuring the patient's life safety.

[0062] Furthermore, the present invention's ventilator pipeline detachment detection method can be applied to the entire respiratory cycle. During the patient's inhalation phase, the turbine operates to provide gas, which is supplied to the patient through gas supply line 2. The calibrated pressure value can be 3-40 cmH2O. During the exhalation phase, to ensure gas exhalation, the calibrated pressure value at this time should be slightly lower than that during the inhalation phase, and can be 3-25 cmH2O. Whether during the exhalation phase or the inhalation phase, if the real-time pressure value is 0 and the real-time gas flow value is greater than the calibrated gas flow value, it is determined that the ventilator's gas supply line 2 is detached. If the real-time pressure value is 0 but the real-time gas flow value is less than or equal to the calibrated gas flow value, it is determined that the ventilator's pressure line 1 is detached.

[0063] Some embodiments also provide a ventilator pipeline detachment detection system including: a processor, the processor is configured to include a real-time pressure value acquisition module, a gas flow calibration setting module, a real-time gas flow acquisition module and a flow comparison and judgment module; wherein the real-time pressure value acquisition module is configured to acquire the real-time pressure value in the ventilator pipeline; the gas flow calibration setting module is configured to acquire the gas flow calibration value in the ventilator pipeline; the real-time gas flow acquisition module is configured to receive the real-time gas flow value in the ventilator pipeline acquired by the flow sensor; the flow comparison and judgment module is configured to be connected to the gas flow calibration setting module and the real-time gas flow acquisition module, and to compare the real-time gas flow value with the gas flow calibration value, thereby outputting a prompt signal of the ventilator gas supply pipeline detachment or a prompt signal of the ventilator pressure pipeline detachment.

[0064] like Figure 3 As shown, some embodiments further provide an electronic device for a ventilator, comprising: a processor, a readable storage medium, a communication bus, and a communication interface; wherein the processor, the readable storage medium, and the communication interface communicate with each other via the communication bus; the readable storage medium is used to store a program for executing a pipeline detachment detection method; the processor is configured to obtain a gas flow calibration value in the ventilator pipeline, that is, to calculate the gas flow calibration value by calibrating the pressure value; that is, Where Flow is the gas flow calibration value, K is the flow conversion factor, and Press is the calibration pressure value. is the pressure calibration coefficient; and the real-time pressure value in the ventilator pipeline is obtained through the pressure sensor, and the real-time gas flow value in the ventilator pipeline is obtained through the flow sensor, and the real-time gas flow value is compared with the gas flow calibration value. When the real-time gas flow value is greater than the gas flow calibration value and the real-time pressure value is 0, it indicates that the ventilator's gas supply pipeline is detached; when the real-time gas flow value is less than or equal to the gas flow calibration value and the real-time pressure value is 0, it indicates that the ventilator's pressure pipeline is detached.

[0065] In some embodiments, the electronic device may be a computer device or an embedded controller, used as a control system for the ventilator.

[0066] In summary, the present invention is applicable to a ventilator with gas volume feedback, that is, when the flow in the ventilator pipeline decreases, the ventilator turbine will increase the gas volume to meet the gas supply demand of the ventilator as much as possible, by comparing the real-time gas flow value in the ventilator pipeline with the gas flow calibration value, which is obtained by the above After obtaining, it is compared, so that it can be specifically and accurately judged whether the ventilator pipeline that has fallen off is the air supply pipeline 2 or the pressure pipeline 1, so as to avoid the traditional ventilator detection device or detection method that only detects and judges by pressure, which can only judge that the ventilator pipeline has fallen off, and cannot subdivide where the pipeline has fallen off, thereby improving the precision and accuracy of the ventilator pipeline detachment alarm.

[0067] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a portion of code, and the module, program segment or a portion of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0068] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0069] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A ventilator, characterized in that: include: A pressure sensor provided on the pressure line of the ventilator; processor; and a turbine connected to an air supply line; in A flow sensor is also provided at the turbine outlet, and the flow sensor is electrically connected to the processor; and When the flow sensor detects that the real-time gas flow value in the gas supply pipeline is less than the gas flow calibration value, the processor controls the turbine to increase the gas volume; in The processor is configured to obtain the real-time pressure value and gas flow calibration value in the ventilator pipeline, and obtain the real-time gas flow value in the ventilator pipeline through the flow sensor, and when the real-time pressure value is 0, by comparing the real-time gas flow value with the gas flow calibration value, it can distinguish whether the ventilator's air supply pipeline or the ventilator's pressure pipeline is detached.

2. The ventilator according to claim 1, wherein The processor is configured to obtain a gas flow calibration value in the ventilator circuit, namely The gas flow calibration value is calculated by the calibration pressure value; that is, Flow = K × ;in Flow is the gas flow calibration value, in LPM; K is the flow conversion factor, in LPM; Press is the calibration pressure value, is the pressure calibration factor.

3. The ventilator according to claim 2, wherein: The processor is configured to compare the real-time gas flow value with the gas flow calibration value, so as to distinguish whether the air supply line of the ventilator is detached or the pressure line of the ventilator is detached. The real-time pressure value of the ventilator tube close to the patient is obtained through the pressure sensor; When the real-time gas flow rate value is greater than the gas flow calibration value and the real-time pressure value is 0, it indicates that the air supply line of the ventilator is detached; as well as When the real-time gas flow value is less than or equal to the gas flow calibration value, and the real-time pressure value is 0, it indicates that the pressure line of the ventilator is detached.

4. A ventilator tube detachment detection system, characterized in that: include: A processor, the processor being configured to include a real-time pressure value acquisition module, a gas flow calibration setting module, a real-time gas flow acquisition module, and a flow comparison and determination module; in A real-time pressure value acquisition module is configured to acquire a real-time pressure value in a ventilator circuit; a gas flow calibration setting module, configured to obtain a gas flow calibration value in a ventilator pipeline; A real-time gas flow acquisition module is configured to receive a real-time gas flow value in a ventilator pipeline obtained by a flow sensor; The flow comparison and judgment module is configured to be connected to the gas flow calibration setting module and the real-time gas flow acquisition module, and when the real-time pressure value is 0, compare the real-time gas flow value with the gas flow calibration value, thereby outputting a prompt signal that the ventilator gas supply pipeline is detached or a prompt signal that the ventilator pressure pipeline is detached.

5. The pipeline detachment detection system according to claim 4, characterized in that: The gas flow calibration setting module obtains the gas flow calibration value in the ventilator pipeline, that is, The gas flow calibration value is calculated by the calibration pressure value; that is, Flow = K × ;in Flow is the gas flow calibration value, in LPM; K is the flow conversion factor, in LPM; Press is the calibration pressure value, is the pressure calibration factor.

6. The pipeline detachment detection system according to claim 5, characterized in that: The flow comparison and determination module compares the real-time gas flow value with the gas flow calibration value, thereby outputting a prompt signal of the ventilator air supply pipeline falling off or a prompt signal of the ventilator pressure pipeline falling off, that is, The real-time pressure value of the ventilator tube close to the patient is obtained through the pressure sensor; When the real-time gas flow rate value is greater than the gas flow calibration value and the real-time pressure value is 0, it indicates that the air supply line of the ventilator is detached; as well as When the real-time gas flow value is less than or equal to the gas flow calibration value, and the real-time pressure value is 0, it indicates that the pressure line of the ventilator is detached.

7. An electronic device comprising: Processor, readable storage medium, communication bus and communication interface; wherein the processor, the readable storage medium and the communication interface communicate with each other via the communication bus; The readable storage medium is used to store a program for executing a pipeline detachment detection method; The processor is configured to obtain a gas flow calibration value in the ventilator circuit, namely Calculate the gas flow calibration value by calibrating the pressure value; that is, Flow = K × ; Flow is the gas flow calibration value, unit is LPM; K is the flow conversion factor, unit is LPM; Press is the calibration pressure value, is the pressure calibration coefficient; as well as The real-time pressure value in the ventilator pipeline is obtained through the pressure sensor, and the real-time gas flow value in the ventilator pipeline is obtained through the flow sensor, and the real-time gas flow value is compared with the gas flow calibration value. When the real-time gas flow value is greater than the gas flow calibration value and the real-time pressure value is 0, it indicates that the air supply pipeline of the ventilator is detached; when the real-time gas flow value is less than or equal to the gas flow calibration value and the real-time pressure value is 0, it indicates that the pressure pipeline of the ventilator is detached.

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