CN118142045A - Ventilation module for breathing machine and control method thereof - Google Patents

Abstract

The invention relates to a ventilation module for a breathing machine and a control method thereof, comprising a ventilation block body, wherein a gas circuit for providing the mixture of pure oxygen and air oxygen is arranged in the ventilation block body; the input end of the pressure regulating valve is communicated with the output end of the oxygen bottle, and the output end of the pressure regulating valve is respectively communicated with the input ends of the electromagnetic valve, the rocker valve and the amplifying valve through three paths of gas paths; the electric control end of the electromagnetic valve is connected with the controlled ends of the amplifying valve and the exhaust valve; the output end of the rocker valve is communicated with the sequential connection end of the sequence valve; the output end of the sequence valve is communicated with the input end of the injector through a check valve; the injector is communicated with the respiratory valve for the patient; the output end of the amplifying valve is communicated with the input end of the regulating valve, one path of output end of the regulating valve is communicated with the input end of the injector, and the other path of output end of the regulating valve is communicated with the input end of the sequence valve. The invention can prevent the risk of oxygen poisoning of patients.

Description

Ventilation module for breathing machine and control method thereof

Technical Field

The present invention relates to a ventilation module for a ventilator, and more particularly, to a ventilation module for a ventilator and a control method thereof.

Background

The patent is searched: the utility model provides a breathing machine and application method (CN 201510645351.2), this breathing machine includes breathing machine host computer and breathing machine transportation module, the breathing machine host computer with breathing machine transportation module can dismantle the connection, the breathing machine host computer is provided with first air feed interface, breathing machine transportation module be provided with first air feed interface corresponds the second air feed interface, third air feed interface and the patient breathing interface of matching. According to the invention, the ICU treatment breathing machine and the first-aid transportation breathing machine are combined into one, if the breathing machine is required to be transported to other departments for examination, medical staff takes out the breathing machine transportation module from the breathing machine host machine, and at the moment, the breathing machine transportation module plays the role of the first-aid transportation breathing machine, so that the treatment, transportation and ventilation are quickly replaced, and the seamless connection from the treatment mode to the transportation mode is realized.

Meanwhile, referring to the Wilman Easy CPR, MEDUMAT EasyCPR is an emergency and transport ventilator that uses medical high pressure pure oxygen as the sole source of gas, and can be connected to a respiratory mask or cannula to provide controlled ventilation to the patient at a constant set point tidal volume.

Most of the two first-aid respirators only provide pure oxygen for patients to breathe, and the pure oxygen is easy to be poisoned by oxygen when inhaled for too long.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a ventilation module for a breathing machine and a control method thereof.

In order to achieve the above purpose, the invention adopts the following technical scheme:

a ventilation module for a ventilator, comprising,

The ventilation block body is internally provided with a gas circuit for providing the mixture of pure oxygen and air oxygen;

The pressure regulating valve is used for regulating the pressure of oxygen entering the gas circuit, the input end of the pressure regulating valve is communicated with the output end of the oxygen bottle, and the output end of the pressure regulating valve is respectively communicated with the input ends of the electromagnetic valve, the rocker valve and the amplifying valve through three gas circuits;

The electromagnetic valve is used for electrically controlling the opening and closing of the amplifying valve and the exhaust valve, and the electric control end of the electromagnetic valve is connected with the controlled ends of the amplifying valve and the exhaust valve;

the rocker valve is used for switching the mixing of pure oxygen and air oxygen, and the output end of the rocker valve is communicated with the sequential connection end of the sequence valve;

the sequence valve is used for enabling air to enter the injector, and the output end of the sequence valve is communicated with the input end of the injector through the check valve;

An injector for mixing and delivering pure oxygen and/or air oxygen to the respiratory valve, the injector being in communication with the respiratory valve for the patient;

The regulating valve is used for regulating the flow of pure oxygen, the output end of the amplifying valve is communicated with the input end of the regulating valve, one path of output end of the regulating valve is communicated with the input end of the ejector, and the other path of output end of the regulating valve is communicated with the input end of the sequence valve.

Preferably, in the ventilation module for a breathing machine, the pressure adjusting range of the pressure adjusting valve is 2.7-4.5 bar, and the pressure entering the ventilation module is controlled to be 2.7 bar.

Preferably, the input end of the exhaust valve is communicated with the output end of the ejector.

Preferably, the ejector is communicated with the safety valve.

Preferably, the ventilation module for the breathing machine further comprises a control system, wherein the control system is in interactive connection with the P/E-converter, the output end of the pressure regulating valve is communicated with the input end of the P/E-converter, the output end of the ejector is communicated with the input end of the P/E-converter, and the control system is communicated and connected with the electromagnetic valve through the frequency regulator.

Preferably, the breather module for the breathing machine is connected with a pressure gauge on the breather valve.

A method of controlling a ventilation module for a ventilator, comprising the steps of:

Pure oxygen mode

1. The rocker valve V6 is turned on and the sequence valve V7 is turned on with pure oxygen;

2. the amplifying valve V3 is connected through an electronic pulse signal on the electromagnetic valve V2, and the exhaust valve V4 is closed at the same time;

3. After passing through the regulating valve V5, one path of oxygen of the regulating valve V5 directly flows into the injector V9, and the other path of oxygen flows into the injector V9 after passing through the sequence valve and the check valve, and then the injector V9 is communicated with the breathing valve;

Air-oxygen mixed mode

1. The rocker valve V6 is closed and the sequence valve V7 is connected to the air;

2. the amplifying valve V3 is connected through an electronic pulse signal on the electromagnetic valve V2, and the exhaust valve V4 is closed at the same time;

3. oxygen flows into the injector V9 through one path of the regulating valve V5, and the sequence valve flows inhaled air into the injector V9 through the check valve, so that the air and the oxygen are mixed and flow into the breather valve through the injector.

Preferably, in the control method of the ventilation module for the breathing machine, the concentration of oxygen after mixing of air and oxygen in an air-oxygen mixing mode is 55% -85%.

Preferably, in the method for controlling a ventilation module for a ventilator, in pure oxygen mode, the safety valve V8 is activated when the respiratory pressure on the respiratory valve of the patient rises above 100 mbar.

Preferably, the control method of the ventilation module for the breathing machine,

Under the condition of normal no air source and no electricity:

the ventilation module is communicated with the outside air, and the patient can breathe normally under the condition of no oxygen source;

Patient inspiration: air enters from the sequence valve V7, in an unpowered state, the sequence valve V7 opens, the check valve opens, enters the patient side from the injector V9,

Patient exhales: the air exhaled by the patient is discharged to the outside after being admitted to the ejector V9 through the check valve 8 and then to the sequence valve V7.

By means of the scheme, the invention has at least the following advantages:

1. the rocker valve can be freely switched under two modes of pure oxygen and air oxygen mixing, so that the oxygen concentration is adjustable between 55% and 100%, the risk of oxygen poisoning of a patient is prevented, and the safety of the patient is improved.

2. The invention can effectively prolong the service time of pure oxygen by adopting an air-oxygen mixing mode, thereby improving the duration of the breathing machine.

3. The invention can select corresponding modes aiming at patients with different blood oxygen concentrations, can prevent the risk of oxygen poisoning of the patients on the premise of ensuring the safety of the patients, prolongs the emergency time, reduces the use of pure oxygen and improves the duration of the breathing machine.

The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a schematic diagram of the gas circuit connection of the present invention;

FIG. 5 is a graph of oxygen content under air-oxygen mixing in accordance with the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Examples

As shown in fig. 1, 2, 3 and 4, a ventilation module for a ventilator includes,

The air block comprises an air block body 1, wherein an air channel for providing the mixture of pure oxygen and air oxygen is arranged in the air block body 1;

The pressure regulating valve 2 is used for regulating the pressure of oxygen entering the gas circuit, the input end of the pressure regulating valve 2 is communicated with the output end of the oxygen bottle, and the output end of the pressure regulating valve 2 is respectively communicated with the input ends of the electromagnetic valve 3, the rocker valve 4 and the amplifying valve 5 through three gas circuits;

the electromagnetic valve 3 is used for electrically controlling the opening and closing of the amplifying valve and the exhaust valve 7, and the electric control end of the electromagnetic valve 3 is connected with the controlled ends of the amplifying valve 5 and the exhaust valve 7;

The rocker valve 4 is used for switching the mixing of pure oxygen and air oxygen, and the output end of the rocker valve 4 is communicated with the sequential connection end of the sequence valve 6;

A sequence valve 6 for introducing air into the injector 9, the output end of the sequence valve 6 being in communication with the input end of the injector 9 via a check valve 8;

An injector 9 for mixing pure oxygen and/or air oxygen to the respiratory valve, the injector 9 being in communication with the respiratory valve 11 for the patient;

the regulating valve 10 is used for regulating the flow of pure oxygen, the output end of the amplifying valve 5 is communicated with the input end of the regulating valve 10, one path of output end of the regulating valve 10 is communicated with the input end of the ejector 9, and the other path of output end of the regulating valve 10 is communicated with the input end of the sequence valve 6.

The pressure regulating valve 2 according to the invention has a pressure regulating range of 2.7-4.5 bar, and the oxygen pressure after passing through the pressure regulating valve 2 is 2.7 bar during use.

In the invention, the input end of the exhaust valve 7 is communicated with the output end of the injector 9, and the exhaust valve can be used for exhausting in a manual mode or can be controlled by an electromagnetic valve.

In the invention, the ejector 9 is communicated with the safety valve 12, and the safety valve 12 can prevent a patient from being disconnected in time after transitional oxygen inhalation, so that oxygen poisoning is prevented.

The invention also comprises a control system 14, wherein the control system 14 is in interactive connection with the P/E-converter 13, the output end of the pressure regulating valve is communicated with the input end of the P/E-converter 13, meanwhile, the output end of the ejector 9 is communicated with the input end of the P/E-converter 13, and the control system 14 is communicated and connected with the electromagnetic valve 3 through a frequency regulator 15.

The control system comprises an A/D converter and an electronic analysis system, so as to analyze the information transmitted by the P/E-converter and finally make corresponding judgment (for example, close the corresponding valve).

The breather valve 11 is connected with a pressure gauge 16.

A method of controlling a ventilation module for a ventilator, comprising the steps of:

Pure oxygen mode

1. The rocker valve V6 is turned on and the sequence valve V7 is turned on with pure oxygen;

2. the amplifying valve V3 is connected through an electronic pulse signal on the electromagnetic valve V2, and the exhaust valve V4 is closed at the same time;

3. After passing through the regulating valve V5, one path of oxygen of the regulating valve V5 directly flows into the injector V9, and the other path of oxygen flows into the injector V9 after passing through the sequence valve and the check valve, and then the injector V9 is communicated with the breathing valve;

Air-oxygen mixed mode

1. The rocker valve V6 is closed and the sequence valve V7 is connected to the air;

2. the amplifying valve V3 is connected through an electronic pulse signal on the electromagnetic valve V2, and the exhaust valve V4 is closed at the same time;

3. oxygen flows into the injector V9 through one path of the regulating valve V5, and the sequence valve flows inhaled air into the injector V9 through the check valve, so that the air and the oxygen are mixed and flow into the breather valve through the injector.

In the invention, the concentration of the mixed oxygen of air and oxygen in an air-oxygen mixing mode is 55% -85%.

In the pure oxygen mode of the invention, the safety valve V8 is activated when the breathing pressure on the patient's breathing valve rises above 100 mbar.

Under the condition of normal no air source and no electricity:

the ventilation module is communicated with the outside air, and the patient can breathe normally under the condition of no oxygen source;

Patient inspiration: air enters from the sequence valve V7, in an unpowered state, the sequence valve V7 opens, the check valve opens, enters the patient side from the injector V9,

Patient exhales: the air exhaled by the patient is discharged to the outside after being admitted to the ejector V9 through the check valve 8 and then to the sequence valve V7.

In the invention, the rocker valve adopts a venturi valve, and when gas (oxygen) passes through the ejector 9, the venturi valve is opened at the moment to trigger the venturi effect, so that air can enter the ejector for mixing.

In the present invention, when Air Mix (Air-oxygen mixing mode) is started, the output oxygen concentration is between 55% and 85%, the breathing pressure is 10mbar, and the values can be confirmed according to the data of fig. 5.

The present invention uses a minute flow setting button to set the minute respiratory flow. The flow rate setting knob adjusts the flow rate per minute and the frequency adjuster controls the intake frequency.

In the monitored breathing pattern, the recommended breathing rate and the breathing flow per minute are shown in table 1.

TABLE 1

The values noted in Table 1 are recommended values, which may deviate in some special cases, depending on the practice of the practitioner.

The breathing working time of the invention is as follows:

wherein, oxygen reserve (liter) =cylinder volume gas cylinder pressure (bar);

MV (liters/min) is shown in Table 1;

the oxygen concentration is determined by the concentration detected by the apparatus and is 100% in the case of pure oxygen.

In the invention, in the air-oxygen mixing mode, a back pressure of 10-30 mbar is generated during normal breathing, and as shown in figure 5, the corresponding oxygen concentration is generated at each flow rate under different pressure under air-oxygen mixing.

Note that the injector is closed when switching from Air Mix to No Air Mix. Thus increasing the respiratory flow per minute. This can result in exceeding the set pressure limit and triggering a line blocking alarm. At this point, please adjust the respiratory flow rate per minute to be correspondingly lower.

Conversely, when switching from No Air Mix to Air Mix, the injector is turned on. Thus the respiratory flow per minute is low. This may result in a pressure limit value below the set pressure limit value. At this time, please set the respiratory flow rate per minute to be correspondingly higher.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "horizontal", "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is conventionally put in use of the product of this application, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or vertical, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (10)

1. A ventilation module for a ventilator, characterized by:

Comprising the steps of (a) a step of,

The air block comprises an air block body (1), wherein an air channel for providing pure oxygen and air-oxygen mixture is arranged in the air block body (1);

The pressure regulating valve (2) is used for regulating the pressure of oxygen entering the gas circuit, the input end of the pressure regulating valve (2) is communicated with the output end of the oxygen bottle, and the output end of the pressure regulating valve (2) is respectively communicated with the input ends of the electromagnetic valve (3), the rocker valve (4) and the amplifying valve (5) through three gas circuits;

the electromagnetic valve (3) is used for electrically controlling the opening and closing of the amplifying valve and the exhaust valve (7), and the electric control end of the electromagnetic valve (3) is connected with the controlled ends of the amplifying valve (5) and the exhaust valve (7);

The rocker valve (4) is used for switching the mixing of pure oxygen and air oxygen, and the output end of the rocker valve (4) is communicated with the sequential connection end of the sequence valve (6);

The sequence valve (6) is used for introducing air into the ejector (9), and the output end of the sequence valve (6) is communicated with the input end of the ejector (9) through the check valve (8);

an injector (9) for mixing pure oxygen and/or air oxygen to the respiratory valve, the injector (9) being in communication with the respiratory valve (11) for the patient;

The regulating valve (10) is used for regulating the flow of pure oxygen, the output end of the amplifying valve (5) is communicated with the input end of the regulating valve (10), one path of output end of the regulating valve (10) is communicated with the input end of the ejector (9), and the other path of output end of the regulating valve (10) is communicated with the input end of the sequence valve (6).

2. A ventilation module for a ventilator according to claim 1, wherein: the pressure regulating valve (2) has a pressure regulating range of 2.7-4.5 bar, wherein the pressure entering the ventilation module is controlled at 2.7 bar.

3. A ventilation module for a ventilator according to claim 1, wherein: the input end of the exhaust valve (7) is communicated with the output end of the injector (9).

4. A ventilation module for a ventilator according to claim 1, wherein: the ejector (9) is in communication with a safety valve (12).

5. A ventilation module for a ventilator as claimed in any of the preceding claims 1-4 wherein: the system also comprises a control system (14), wherein the control system (14) is in interactive connection with the P/E-converter (13), the output end of the pressure regulating valve is communicated with the input end of the P/E-converter (13), the output end of the ejector (9) is communicated with the input end of the P/E-converter (13), and the control system (14) is communicated and connected with the electromagnetic valve (3) through the frequency regulator (15).

6. A ventilation module for a ventilator according to claim 1, wherein: the breather valve (11) is connected with a pressure gauge (16).

7. A method of controlling a ventilation module for a ventilator, comprising the steps of:

Pure oxygen mode

(1) The rocker valve V6 is turned on, and the pure oxygen of the sequence valve V7 is turned on;

(2) The amplifying valve V3 is connected through an electronic pulse signal on the electromagnetic valve V2, and the exhaust valve V4 is closed at the same time;

(3) After the oxygen passes through the regulating valve V5, one path of the regulating valve V5 directly flows into the injector V9, the other path of the oxygen passes through the sequence valve and the check valve and then flows into the injector V9, and then the injector V9 is communicated with the breathing valve;

Air-oxygen mixed mode

(1) The rocker valve V6 is closed, and the sequence valve V7 is communicated with the air;

(2) The amplifying valve V3 is connected through an electronic pulse signal on the electromagnetic valve V2, and the exhaust valve V4 is closed at the same time;

(3) Oxygen flows into the injector V9 through one path of the regulating valve V5, and the sequence valve flows inhaled air into the injector V9 through the check valve, so that the air and the oxygen are mixed and flow into the breather valve through the injector.

8. The method for controlling a ventilation module for a ventilator of claim 7, wherein: the oxygen concentration after mixing of air and oxygen in the air-oxygen mixing mode is 55% -85%.

9. The method for controlling a ventilation module for a ventilator of claim 7, wherein: in pure oxygen mode, the relief valve V8 is activated when the breathing pressure on the patient's breathing valve rises above 100 mbar.

10. The method for controlling a ventilation module for a ventilator of claim 7, wherein: under the condition of normal no air source and no electricity:

the ventilation module is communicated with the outside air, and the patient can breathe normally under the condition of no oxygen source;

Patient inspiration: air enters from the sequence valve V7, in an unpowered state, the sequence valve V7 opens, the check valve opens, enters the patient side from the injector V9,

Patient exhales: the air exhaled by the patient is discharged to the outside after being admitted to the ejector V9 through the check valve 8 and then to the sequence valve V7.