CN213131384U

CN213131384U - Breathing apparatus

Info

Publication number: CN213131384U
Application number: CN202020756334.2U
Authority: CN
Inventors: 罗阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-05-07
Anticipated expiration: 2030-05-09

Abstract

A breathing device comprises a gas pipe, a control module and a proportional solenoid valve, wherein one end of the gas pipe is provided with a quick connector connected with a compressed gas generating device, and the other end of the gas pipe is provided with an output port for conveying gas flow to a patient; the control module is used for controlling the air flow passing through the trachea according to the set breathing frequency and/or breathing time; the proportional solenoid valve is arranged on the air pipe and is electrically connected with the control module, and the proportional solenoid valve can directly control the air flow passing through the air pipe under the control of the control module. The breathing device of the utility model has the advantages that the smallest system only needs the air pipe, the control module and the proportional solenoid valve, and the control module can control the proportional solenoid valve to deliver the metered air flow to the patient to assist the patient in breathing; in addition, by selectively adding components such as a pressure sensor, a flow sensor and the like, more accurate control can be realized, so that the metering precision is improved. The utility model discloses a breathing device, the configuration is simple, but its greatly reduced cost to improve production efficiency.

Description

Breathing apparatus

[ technical field ] A method for producing a semiconductor device

The utility model relates to a medical instrument, in particular to breathing device.

[ background of the invention ]

In modern clinical medicine, a ventilator has been widely used in respiratory failure due to various reasons, anesthesia and breathing management during major surgery, respiratory support therapy and emergency resuscitation as an effective means for manually replacing the function of spontaneous ventilation, and has a very important position in the modern medical field. The breathing machine is a vital medical device which can prevent and treat respiratory failure, reduce complications and save and prolong the life of a patient. The existing breathing machine has high manufacturing cost and long production period, and is difficult to meet the demand and supply when encountering sudden epidemic situations. Therefore, there is a need for a low cost, easy to produce, and basic function ventilator to meet different needs.

[ Utility model ] content

In order to solve the problem, the utility model provides a breathing device which has simple structure, low cost and easy production.

In order to solve the problems, the utility model provides a breathing device, which is characterized in that the breathing device comprises a gas pipe, a control module and a proportional solenoid valve, wherein one end of the gas pipe is provided with a quick joint connected with a compressed gas generating device, and the other end of the gas pipe is provided with an output port for conveying gas flow to a patient; the control module is used for controlling the air flow passing through the trachea according to the set breathing frequency and/or breathing time; the proportional electromagnetic valve is arranged on the air pipe and electrically connected with the control module, and the proportional electromagnetic valve can directly control the air flow passing through the air pipe under the control of the control module.

Further, the air pipe type proportional electromagnetic valve further comprises a pressure regulator which is arranged on the air pipe and is positioned between the quick connector and the proportional electromagnetic valve.

Further, the air-conditioning system also comprises an input pressure sensor which is arranged on the air pipe and is positioned between the quick connector and the proportional electromagnetic valve; the input pressure sensor is electrically connected with the control module, and the control module adjusts the proportional solenoid valve according to a pressure value fed back by the input pressure sensor.

Furthermore, the device also comprises a flow sensor which is arranged on the air pipe and is positioned between the proportional solenoid valve and the output port; the flow sensor is electrically connected with the control module, and the control module can adjust the proportional solenoid valve according to a flow value fed back by the flow sensor.

Furthermore, the air pipe also comprises a pressure reducing valve which is arranged on the air pipe and is positioned between the proportional solenoid valve and the output port; the pressure reducing valve is electrically connected with the control module.

Furthermore, the air-conditioning system also comprises an output pressure sensor which is arranged on the air pipe and is positioned between the proportional solenoid valve and the output port; the output pressure sensor is electrically connected with the control module, and the control module adjusts the proportional solenoid valve according to a pressure value fed back by the output pressure sensor.

Furthermore, the device also comprises an alarm module and a display module which are respectively connected with the control module;

further, the control module comprises a main control unit, a power supply unit and a solenoid driver, wherein the power supply unit is connected with the main control unit and used for providing working voltage for the control module; the solenoid driver is connected with the main control unit; the solenoid driver outputs a PWM signal to the proportional solenoid valve under the control of the main control unit to control the amount of air flow through the air tube.

Furthermore, the control module also comprises a pressure sensor interface, a flow sensor and a communication unit, wherein the pressure sensor interface is connected with the main control unit; the flow sensor interface is connected with the main control unit; the communication unit is connected with the main control unit and can be used for remote communication.

The beneficial contributions of the utility model reside in that, it has effectively solved above-mentioned problem. The breathing device of the utility model has the advantages that the smallest system only needs the air pipe, the control module and the proportional solenoid valve, and the control module can control the proportional solenoid valve to deliver the metered air flow to the patient to assist the patient in breathing; in addition, by selectively adding components such as a pressure sensor, a flow sensor and the like, more accurate control can be realized, so that the metering precision is improved.

The utility model discloses a breathing device, with low costs, it is few to use the part, easy equipment, and a whole set of manufacturing cost is about RMB thousand yuan, and the price of traditional breathing machine then surpasss RMB 20 ten thousand under the normal state of supply and demand, and is obvious, the utility model discloses a but breathing device greatly reduced use cost! And compare other emergency treatment respiratory device, the utility model discloses a breathing machine can accurate regulated pressure, flow isoparametric, can let medical personnel adjust more easily and control the oxygen of inputing patient lung, consequently, the utility model discloses a respiratory device is safer.

The utility model discloses a breathing device, the configuration is simple, and it uses ready-made parts assembly together, the use of reducible scarce part to can shorten the assemble duration greatly, consequently, but its greatly reduced cost, and improve production efficiency, it is required in order to satisfy increasingly serious epidemic situation.

[ description of the drawings ]

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic block diagram of the present invention.

Fig. 3 is a block diagram of another schematic structure of the present invention.

Fig. 4 is a block diagram of the structure of the control module.

The attached drawings indicate the following: the air pipe 1, the quick connector 11, the output port 12, the first air pipe 13, the first T-shaped air pipe joint 14, the second T-shaped air pipe joint 15, the third air pipe 16, the fourth air pipe 17, the fifth air pipe 18, the sixth air pipe 19, the seventh air pipe 110, the eighth air pipe 111, the ninth air pipe 112, the tenth air pipe 113, the third T-shaped air pipe joint 114, the fourth T-shaped air pipe joint 115, the second air pipe 116, the control module 2, the main control unit 21, the power supply unit 22, the solenoid driver 23, the pressure sensor interface 24, the flow sensor interface 25, the communication unit 26, the proportional solenoid valve 3, the compressed gas generating device 4, the pressure regulator 5, the input pressure sensor 6, the alarm module 7, the flow sensor 8, the pressure reducing valve 9, the output pressure sensor 10, the display module 101, the operation panel 102, the box 103, the box cover 104 and the support plate 105.

[ detailed description ] embodiments

The following examples are further to explain and supplement the present invention, and do not constitute any limitation to the present invention.

As shown in fig. 1 to 4, the simplest configuration of the breathing apparatus of the present invention includes an air pipe 1, a control module 2, and a proportional solenoid valve 3. On the basis, a sensor can be further added for feedback to improve the accuracy of flow control.

The air tube 1 is used for conveying air flow, and the air tube 1 can be selected from known air tubes.

As shown in fig. 1, 2 and 3, in order to facilitate connection of the compressed gas generator 4, a quick coupling 11 is provided at one end of the gas pipe 1. The quick coupling 11 can be connected to the compressed gas generator 4 quickly to supply compressed gas, such as compressed air, compressed oxygen, or a mixture of air and oxygen, to the air tube 1.

As shown in fig. 1, 2 and 3, the end of the trachea 1 opposite the quick connector 11 is an output port 12 for delivering a flow of gas to a patient.

As shown in fig. 2 and 3, the air tube 1 may be a whole tube or a plurality of tubes spliced together, depending on the configuration. For example, when the breathing apparatus of the present invention includes only the air tube 1, the control module 2 and the proportional solenoid valve 3, the air tube 1 may be a whole tube, and the proportional solenoid valve 3 is disposed on the air tube 1 for directly controlling the air flow passing through the air tube 1.

As shown in fig. 2 and 3, the control module 2 is configured to control the proportional solenoid valve 3 according to a set breathing frequency and/or breathing time, so as to control the air flow through the trachea 1. Further, in some embodiments, the control module 2 may also adjust the proportional solenoid valve 3 according to feedback from a pressure sensor, a flow sensor 8, or the like, to more precisely control the amount of air flow through the air pipe 1.

As shown in fig. 4, the control module 2 includes a main control unit 21, a power supply unit 22, and a solenoid driver 23. Further, it may also include a pressure sensor interface 24, a flow sensor interface 25 and a communication unit 26.

The power supply unit 22 is used for providing a working voltage for the control module 2, and is electrically connected with the main control unit 21. The specific circuit structure of the power supply unit 22, which is not limited in this embodiment, may be designed by referring to a known power supply circuit structure or may be custom-developed by those skilled in the art. In this embodiment, the power supply of the power supply unit 22 is from a 12V input, for example, a 12V rechargeable battery.

The master control unit 21 is used for global control to generate the required air flow volume over time. In this embodiment, the main control unit 21 is an ATMega328PB type controller, which includes an A/D converter, a timer, which can read data from various sensors, a timer/counter, which can maintain timing and modulate the solenoid PWM waveform, and various communication interfaces.

As shown in fig. 4, the solenoid driver 23 is used for driving the proportional solenoid valve 3, and the solenoid driver 23 is electrically connected to the main control unit 21 and outputs a PWM signal to the proportional solenoid valve 3 under the modulation of the main control unit 21 to control the air flow rate through the air pipe 1. The number of the solenoid drivers 23 may be set as required, and in the present embodiment, two solenoid drivers 23 are provided to be connected to the proportional solenoid valve 3 to output the PWM signal to the proportional solenoid valve 3.

In this embodiment, a piecewise linear calibration table may be used to convert the airflow into the PWM setting of the proportional solenoid valve, so that the main control unit 21 can control the airflow of the proportional solenoid valve through the PWM signal.

The pressure sensor interface 24, flow sensor interface 25 and communication unit 26 are optional units that may be optional depending on configuration requirements. The pressure sensor interface 24 and the flow sensor interface 25 are for increasing a feedback control interface to facilitate connection of the pressure sensor and the flow sensor 8 to obtain corresponding pressure data and flow data, so that the control module 2 can monitor input and output pressures, and further dynamically adjust the proportional solenoid valve 3 to improve the precision of closed-loop control.

The communication unit 26 is an optional unit, which does not have to be provided. The communication unit 26 is used for remote communication so that the medical staff can remotely control the breathing apparatus so that the patient is treated separately from the medical staff. For example, by providing the communication unit 26, the operation panel 102 for setting parameters of the breathing apparatus can be separated from the core device composed of the trachea 1, the proportional solenoid valve 3 and the control module 2, so that the operation panel 102 can be moved out of a ward to facilitate the alignment of medical staffPatients in the isolation ward are remotely treated by breathing. The communication unit 26 is connected to the main control unit 21. The communication unit 26 may pass through RS232, I²And communication interfaces such as C or SPI are in communication connection with the main control unit 21. The utility model discloses do not restrict its communication mode, but the communication connection between communication unit 26 and the main control unit 21 can refer to well-known technique.

The proportional solenoid valve 3 is used for directly controlling the air flow of the air pipe 1. In other words, the flow of gas to the patient can be directly controlled by the proportional solenoid valve 3. The proportional solenoid valve 3 is connected to the control module 2, and more specifically to the solenoid driver 23. The proportional solenoid valve 3 controls the air flow and is controlled by the PWM signal of the control module 2. In this embodiment, the proportional solenoid valve 3 may be a known proportional solenoid valve 3, which is provided on the air tube 1. The flow range which can be controlled by the proportional electromagnetic valve 3 is preferably 50L/min-100L/min. If a single proportional solenoid valve 3 cannot meet the demand, a plurality of proportional solenoid valves 3 may be used in parallel. In this embodiment, the proportional solenoid valve 3 can be selected from the following types of proportional valves: SMC PVQ 31-6G-40-01, SMC PVQ 31-6G-23-01, SMC PVQ 31-6G-16-01 and EV-P-10-25A 0-V. The proportional solenoid valve 3 is connected to the air pipe 1 in a known manner, and controls the air flow rate of the air pipe 1 under the control of the control module 2.

As shown in fig. 2, the simplest breathing apparatus can be constructed by the air tube 1, the proportional solenoid valve 3 and the control module 2. At this point, which is open-loop control, with no closed-loop feedback, the control module 2 directly controls the proportional solenoid valve 3 to deliver a metered flow of gas to the patient through the trachea 1.

When the control precision needs to be increased, as shown in fig. 3, the control precision can be realized by adding a sensor and the like.

In some embodiments, the breathing apparatus may optionally be equipped with a pressure regulator 5. The pressure regulator 5 is used for regulating the maximum pressure passing through the air pipe 1, is arranged on the air pipe 1 and is positioned between the quick coupling 11 and the proportional electromagnetic valve 3. The pressure regulator 5 is located on the input side and is used for regulating the pressure value at the input, which may be selected from known pressure regulators 5.

In some embodiments, the breathing apparatus may be optionally equipped with an additional input pressure sensor 6. The input pressure sensor 6 is arranged on the air pipe 1, is positioned between the quick coupling 11 and the proportional solenoid valve 3, and is used for detecting a pressure value on an input side. The input pressure sensor 6 is electrically connected to the control module 2 and feeds back an input-side pressure value to the control module 2, so that the control module 2 dynamically adjusts the proportional solenoid valve 3 to adjust the amount of air flow to the patient. The addition of the input pressure sensor 6 on the input side enables the control module 2 to correct for variations in input pressure, thereby improving control accuracy. The input pressure sensor 6 may be a known pressure sensor, which is connected to the air tube 1 in a known manner. In addition, the additionally arranged input pressure sensor 6 can be used for monitoring the alarm condition, and when the pressure value of the input side exceeds the maximum pressure, the alarm module 7 can be linked to give an alarm, so that the safety is improved.

In some embodiments, the breathing apparatus may be optionally supplemented with a flow sensor 8. The flow sensor 8 is disposed on the air tube 1 and between the proportional solenoid valve 3 and the output port 12, and is configured to detect the amount of air flowing to the patient. The flow sensor 8 is electrically connected to the control module 2 and feeds back the flow value at the output to the control module 2, so that the control module 2 dynamically adjusts the proportional solenoid valve 3 to adjust the amount of gas flowing into the patient. The flow sensor 8 is added on the output side, so that the phenomena of inaccuracy and regulation lag of the proportional solenoid valve 3 can be corrected, and the flow precision control of 1% -5% can be realized. The flow sensor 8 may be a known flow sensor 8, for example a sensor of the siargoofs 4008 type. The flow sensor 8 is connected in a known manner in the air tube 1. In addition, the additionally arranged flow sensor 8 can also be used for monitoring the alarm condition, and when the gas flow of the output side exceeds a preset range value, the alarm module 7 can be linked to give an alarm, so that the safety is improved.

In some embodiments, the breathing apparatus may optionally be supplemented with a pressure relief valve 9. The pressure reducing valve 9 is arranged on the air pipe 1, is positioned between the proportional solenoid valve 3 and the output port 12, and is used for controlling the maximum pressure value of the output side so as to improve the safety of the system. The pressure reducing valve 9 may be a known pressure reducing valve 9, which may be connected to the air tube 1 in a known manner.

In some embodiments, the respiratory device may be optionally equipped with an increased output pressure sensor 10. The output pressure sensor 10 is arranged on the air pipe 1, is positioned between the proportional solenoid valve 3 and the output port 12, and is used for detecting the pressure value of the output side. The output pressure sensor 10 is electrically connected to the control module 2, and can feed back the pressure value at the output side to the control module 2, so that the control module 2 dynamically adjusts the proportional solenoid valve 3 to adjust the air flow flowing into the patient. By adding an output pressure sensor 10 to the output side, the maximum pressure value on the output side can be controlled and the patient can start breathing by detecting the pressure drop. For example, when the patient inhales spontaneously, the pressure in the trachea 1 drops, and when the pressure drops to a set range of values, the breathing apparatus will trigger breathing to assist the patient in breathing. The output pressure sensor 10 may be a known pressure sensor, which is connected to the air tube 1 in a known manner. In addition, the added output pressure sensor 10 can also be used for monitoring the alarm condition, and when the pressure value at the input position exceeds the maximum pressure, the alarm module 7 can be linked to give an alarm, so that the safety is improved.

The pressure regulator 5, the input pressure sensor 6, the flow sensor 8, the pressure reducing valve 9, and the output pressure sensor 10, which are selectively added, may be added by selecting one of the devices, may be added by selecting a plurality of devices, or may be added by selecting all of the devices. These additional components are selected for closed loop control, which can improve the accuracy of control by the control module 2 through feedback, thereby improving the accuracy of the flow control of the breathing apparatus. The number of optional components may be increased as needed, and may be, for example, one input pressure sensor 6 or a plurality of input pressure sensors 6. For an open-loop controlled breathing apparatus, the precision is about 20%; for a closed-loop feedback control breathing device, the control precision can be improved to 1% -5%.

The optional addition of devices, when connected to the trachea 1, can be done according to known techniques, which are relatively simple and will not be described in detail in this embodiment. When there are a large number of dispensing members, for example, the pressure regulator 5, the input pressure sensor 6, the flow sensor 8, the pressure reducing valve 9, and the output pressure sensor 10 are all increased by dispensing, the arrangement may be made with reference to the following structure (as shown in fig. 3):

as shown in fig. 3, the trachea 1 may be divided into a number of sections: a plurality of air pipes 1 and a plurality of T-shaped air pipe joints for connection.

As shown in fig. 3, one end of the first air pipe 13 is connected to the quick coupling 11, and the other end of the first air pipe 13 is connected to the pressure regulator 5;

as shown in fig. 3, the other end of the pressure regulator 5 is connected to the first end of the first T-shaped air pipe joint 14 through a second air pipe 116;

as shown in fig. 3, the second end of the first T-shaped air pipe joint 14 is connected to the first end of the second T-shaped air pipe joint 15 through a third air pipe 16, and the third end of the first T-shaped air pipe joint 14 is connected to the proportional solenoid valve 3 through a fourth air pipe 17;

as shown in fig. 3, a second end of the second T-shaped air pipe joint 15 is connected to an oxygen interface for inputting oxygen into the air pipe 1; the third end of the second T-shaped air pipe joint 15 is connected with the input pressure sensor 6 through a fifth air pipe 18;

as shown in fig. 3, the other end of the proportional solenoid valve 3 is connected to the flow sensor 8 through a sixth air tube 19, and the other end of the flow sensor 8 is connected to a first end of a third T-shaped air tube joint 114 through a seventh air tube 110;

as shown in fig. 3, the second end of the third T-shaped air tube connector 114 is connected to the first end of the fourth T-shaped air tube connector 115 through the eighth air tube 111, and the third end of the third T-shaped air tube connector 114 is an output port 12 for outputting airflow to the patient;

as shown in fig. 3, a second end of the fourth T-shaped air pipe joint 115 is connected to the pressure reducing valve 9 through a ninth air pipe 112, and a third end of the fourth T-shaped air pipe joint 115 is connected to the output pressure sensor 10 through a tenth air pipe 113.

In this embodiment, as shown in fig. 3, a plurality of T-shaped air pipe joints, a plurality of air pipes, a pressure regulator 5, an input pressure sensor 6, a flow sensor 8, a pressure reducing valve 9, and an output pressure sensor 10 are connected together by using a standard 1/4NPT (spinal pipe screw) structure, so that the assembly is facilitated, and the use of rare parts is reduced.

The utility model discloses a respiratory device is at the in-process that admits air (corresponding to breathing in), but each sensor constantly monitors the pressure value to make control module 2 can control proportional solenoid valve 3 according to predetermineeing rule and in order to adjust the air flow, the 1 internal pressure of trachea that makes maintains at the settlement pressure within range, for example, maintains at 20cmH20 to 60cmH2O pressure within range.

For breathing apparatuses, the gas introduced into the trachea 1 is generally a gas mixture containing oxygen; the mixing of the gases may be performed outside the breathing apparatus, for example, the mixed gases may be connected to the quick connector 11 and input into the trachea 1. Of course, the gas may be mixed in the breathing apparatus, for example, the gas 1 may be introduced into the trachea 1 through the quick connector 11, and oxygen may be introduced into the trachea 1 through the oxygen interface at the second T-shaped trachea connector 15, so that the gas is mixed in the trachea 1. Thus, the mixing of the gases delivered to the patient can be performed either outside or inside the breathing apparatus, which can be specifically set as desired. The utility model discloses a respiratory device structure is nimble, and it allows to dispose out different structures according to actual need.

When the breathing apparatus is required to be used, an existing exhalation valve tube (not shown) is connected to the output port 12 of the breathing apparatus. Breather valve pipe fitting does not include the respiratory device within range, it can select as required can, it is through including devices such as expiratory valve, trachea 1 and peep valve.

The breathing apparatus of the present invention has a main object to adjust the air flow with the least cost and the simplest structure, thereby reducing the use of scarce parts and shortening the assembly time.

In addition, as shown in fig. 1 and fig. 3, the breathing apparatus of the present invention further provides a display module 101 for displaying parameters related to breathing, so that medical staff can visually understand the parameters. The display module 101 is electrically connected to the control module 2. In this embodiment, the display module 101 is a 4-line 20-character LCD screen, and is connected to the control module 2 through an I2C two-wire interface. The respiration-related parameters that can be displayed by the display module 101 include, but are not limited to, those shown in the following table:

parameter(s)	Unit of	Description of the invention
			Tidal volume	Milliliter (ml)	Last breath
Volume in minutes	Milliliter (ml)	Delivery volume in last minute
			PIP	Millimeter H2O	Pressure peak of last breath
Peep at	Millimeter H2O	End expiratory pressure

As shown in fig. 1 and 3, in order to facilitate the medical staff to set the relevant breathing parameters according to the patient's condition, the breathing apparatus of the present invention may further provide an operation panel 102. The operation panel 102 may be integrated with the display module 101, for example, a touch panel, which may be used for both display and touch setting. In this embodiment, the operation panel 102 includes two knobs, which are respectively connected to the control module 2. A first knob may be used to select parameter items such as tidal volume, respiratory rate, I: E ratio (inspiratory time: expiratory time), maximum pressure, etc.; the second knob may be used to select a specific parameter value for the selected parameter, e.g. a specific range of breathing rates may be set by the second knob when the first knob selects breathing rates.

For the breathing apparatus of the present invention, the parameters and parameter values that can be set by the operation panel 102 include, but are not limited to, the following table:

parameter(s)	Parameter value	Unit of
			Tidal volume	100-800	Milliliter (ml)
Respiratory rate	10-40	Breath/minute
			I: e ratio	2: 1 to 1: 4	Ratio of
Maximum pressure	100-600	Millimeter H2O
			Patient triggered breathing	On/off
Alarm pressure	100-700	Millimeter H2O

Parameter(s)	Parameter value	Unit of
			Alarm low minute volume	0-30000	Milliliter (ml)
Alarm high minute volume	0-30000	Milliliter (ml)
			Alarm disconnect PIP	0-200	Millimeter H2O

The operation panel 102 may be disposed at a position close to the proportional solenoid valve 3 and the output port 12, or at another position far away from the proportional solenoid valve, so as to facilitate remote control of medical staff. When remote control is needed, the operation panel 102 can communicate with the control module 2 through an RS232 protocol, so that the operation panel 102 is far away from the core components of the breathing device, and the operation panel 102 is convenient to move out of an isolation ward to facilitate remote control.

In order to improve the safety, as shown in fig. 3, the breathing apparatus of the present invention may further include an alarm module 7. The alarm module 7 is electrically connected with the control module 2, and when the value monitored by each sensor exceeds a preset value, the alarm module 7 can give an alarm in the forms of sound, light and the like. The scenarios in which the alarm module 7 is alarmed in linkage include, but are not limited to, the following:

parameter(s)	Description of the invention
		Disconnect	PIP below threshold 3 breaths
Pressure intensity	Exceeding the alarm pressure threshold
		Low minute volume	Minute volume below a set threshold
High minute volume	Volume per minute exceeds a set threshold

The breathing apparatus of the utility model, when it is embodied, can be constructed into the form of a suitcase:

the suitcase comprises a suitcase body 103 and a suitcase cover 104, wherein the suitcase body 103 and the suitcase cover 104 are connected in an involutory mode, and the suitcase cover 104 can be opened or closed through a flip cover. The box body 103 can be used for arranging various parts, a supporting plate 105 is arranged at the top of the box body 103 facing the box cover 104, the display module 101, the operation panel 102, the air pipe 1 and the proportional solenoid valve 3 are fixedly arranged on the supporting plate 105, and the control module 2 is arranged in the space of the box body 103 below the supporting plate 105; in this way, in use, the cover 104 is opened, the compressed gas generator 4 is connected to the quick connector 11 of the air tube 1, and the exhalation valve assembly is connected to the output port 12. When the exhalation valve assembly is connected to the patient, the breathing apparatus is turned on and the control module 2 controls the ventilation by controlling the proportional solenoid valve 3 to deliver metered amounts of gas to the patient.

For the breathing device of the utility model, in the air intake stage (inspiration stage), the breathing device controls the ventilation volume and the ventilation time of the proportional solenoid valve 3 to provide the gas with the tidal volume range of 0.2L-0.8L to be delivered to the patient; during the exhaust phase (expiratory phase), the proportional solenoid valve 3 is closed and the patient exhales through the expiratory valve assembly to atmosphere. The breathing trigger of the breathing apparatus can be initiated by the patient or can be processed by the breathing apparatus, which can be set specifically as desired. When the breathing is triggered by a patient, the pressure drop is formed in the trachea 1 when the patient inhales, and the output pressure sensor 10 can detect the pressure drop and feed the pressure drop back to the control module 2 so as to trigger the breathing device to work; when the breathing is set to be forcibly controlled by the breathing device, for the simplest configuration comprising only the air pipe 1, the proportional solenoid valve 3 and the control module 2, the control module 2 can control the proportional solenoid valve 3 in a timed and quantitative manner to deliver gas to the patient; for configurations where sensors are selected, the control module 2 may dynamically adjust the proportional solenoid valve 3 to deliver a more precise flow of gas to the patient based on the feedback from the sensors.

For the breathing apparatus of the present invention, the core components are the proportional solenoid valve 3, the air tube 1 and the control module 2, in other words, the simplest configuration of the breathing apparatus may include only the proportional solenoid valve 3, the air tube 1 and the control module 2; the simplest breathing device can meet the basic function requirement, and the precision range is about 20 percent; when the accuracy of the air flow is required to be further improved, the pressure increasing pressure regulator 5, the input pressure sensor 6, the flow sensor 8, the pressure reducing valve 9, the output pressure sensor 10 and other devices can be selected according to the requirements, and the selected devices can perform feedback control, so that the control module 2 can dynamically adjust the proportional electromagnetic valve 3 according to real-time feedback data, the air flow conveyed to a patient is controlled more accurately, and the control accuracy is greatly improved. The optional components, which are all known components, are easy to obtain and connect with the air pipe 1, and are easy to assemble even if all the optional components are assembled, and particularly, the optional components are connected by using standard 1/4NPT accessories in the embodiment, so that the assembly efficiency can be improved, the use of scarce components can be reduced, and the cost can be reduced to meet the supply requirement.

While the invention has been described with reference to the above embodiments, the scope of the invention is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the concept of the invention.

Claims

1. A breathing apparatus, characterized in that it comprises:

one end of the air pipe (1) is provided with a quick connector (11) connected with the compressed gas generating device (4), and the other end is provided with an output port (12) for conveying air flow to a patient;

a control module (2) for controlling the flow of gas through the trachea (1) according to a set breathing frequency and/or breathing time;

and the proportional electromagnetic valve (3) is arranged on the air pipe (1) and is electrically connected with the control module (2), and the proportional electromagnetic valve (3) can directly control the air flow passing through the air pipe (1) under the control of the control module (2).

2. The respiratory device of claim 1, further comprising:

and the pressure regulator (5) is arranged on the air pipe (1) and is positioned between the quick connector (11) and the proportional electromagnetic valve (3).

3. The respiratory device of claim 1, further comprising:

the input pressure sensor (6) is arranged on the air pipe (1) and is positioned between the quick connector (11) and the proportional electromagnetic valve (3);

the input pressure sensor (6) is electrically connected with the control module (2), and the control module (2) adjusts the proportional solenoid valve (3) according to a pressure value fed back by the input pressure sensor (6).

4. The respiratory device of claim 1, further comprising:

the flow sensor (8) is arranged on the air pipe (1) and is positioned between the proportional solenoid valve (3) and the output port (12);

the flow sensor (8) is electrically connected with the control module (2), and the control module (2) can adjust the proportional electromagnetic valve (3) according to a flow value fed back by the flow sensor (8).

5. The respiratory device of claim 1, further comprising:

the pressure reducing valve (9) is arranged on the air pipe (1) and is positioned between the proportional solenoid valve (3) and the output port (12); the pressure reducing valve (9) is electrically connected with the control module (2).

6. The respiratory device of claim 1, further comprising:

the output pressure sensor (10) is arranged on the air pipe (1) and is positioned between the proportional solenoid valve (3) and the output port (12);

the output pressure sensor (10) is electrically connected with the control module (2), and the control module (2) adjusts the proportional solenoid valve (3) according to a pressure value fed back by the output pressure sensor (10).

7. The respiratory device of claim 1, further comprising:

the alarm module (7) is connected with the control module (2);

and the display module (101) is connected with the control module (2).

8. The breathing arrangement according to claim 1, wherein the control module (2) comprises:

a main control unit (21);

the power supply unit (22) is connected with the main control unit (21) and is used for providing working voltage for the control module (2);

a solenoid driver (23) connected to the main control unit (21); the solenoid driver (23) outputs a PWM signal to the proportional solenoid valve (3) under the control of the main control unit (21) to control the amount of air flow through the air tube (1).

9. The respiratory apparatus according to claim 8, wherein the control module (2) further comprises:

a pressure sensor interface (24) connected to the master control unit (21);

a flow sensor interface (25) connected to the master control unit (21);

a communication unit (26) connected to the master control unit (21) and operable for remote communication.