CN110464945A - A kind of system of high frequency respirator, ventilation control method and device - Google Patents
A kind of system of high frequency respirator, ventilation control method and device Download PDFInfo
- Publication number
- CN110464945A CN110464945A CN201910807703.8A CN201910807703A CN110464945A CN 110464945 A CN110464945 A CN 110464945A CN 201910807703 A CN201910807703 A CN 201910807703A CN 110464945 A CN110464945 A CN 110464945A
- Authority
- CN
- China
- Prior art keywords
- frequency
- high frequency
- current
- pressure
- turbofan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000010355 oscillation Effects 0.000 claims abstract description 67
- 238000004590 computer program Methods 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 8
- 239000007789 gas Substances 0.000 description 66
- 238000002156 mixing Methods 0.000 description 27
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 7
- 229910001882 dioxygen Inorganic materials 0.000 description 6
- 230000029058 respiratory gaseous exchange Effects 0.000 description 6
- 230000000241 respiratory effect Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000002644 respiratory therapy Methods 0.000 description 2
- -1 at this point Chemical compound 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003519 ventilatory effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
- A61M2016/102—Measuring a parameter of the content of the delivered gas
- A61M2016/1025—Measuring a parameter of the content of the delivered gas the O2 concentration
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Percussion Or Vibration Massage (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The present invention provides a kind of systems of high frequency respirator, ventilation control method and device, are related to ventilator technical field.The ventilation control method of high frequency respirator of the present invention, comprising: obtain the current frequency and current patents' end pressure of high frequency respirator；It calculates the frequency difference of current frequency and predeterminated frequency: if the absolute value of frequency difference is greater than setpoint frequency threshold value, if current patents' end pressure is greater than setting patient's end pressure, being controlled according to safety return circuit or turbofan of the current frequency to high frequency respirator；If current patents' end pressure is less than setting patient's end pressure, turbofan is controlled according to current frequency.The present invention is when the frequency of high frequency oscillation module is interfered, directly the frequency of high frequency oscillation module is not adjusted, in conjunction with patient's end pressure and current frequency, pass through different adjustable strategies, by means of safety return circuit or turbofan, the pressure or frequency of gas circuit are changed, move closer to the frequency of high frequency oscillation module in setpoint frequency.
Description
Technical field
The present invention relates to the technical fields of ventilator, control in particular to a kind of system of high frequency respirator, ventilation
Method and device.
Background technique
High frequency respirator is the artificial mechanism to need to provide patient's design of Breathing Suppotion, respiratory therapy and emergency resuscitation
The breathing apparatus of ventilation, generalling use high-pressure air source is to need to provide the patient of Breathing Suppotion, respiratory therapy and emergency resuscitation to mention
For Artificial controlled mechanical ventilation.Existing high frequency respirator generallys use compressed air as air due to the requirement to input pressure
Source, and under certain specific rescue environment, often lack compressed air source, and normal frequency ventilator can only be used, for breathing
For failure patients, the rescue effect of normal frequency ventilator is poor.Due to carrying out the driving of gas using turbofan, it will usually produce
Anger presses unstable phenomenon, and respiratory quotient can generate certain interference to high frequency oscillation module, lead to the vibration of high frequency oscillation module
It is different from predeterminated frequency to swing frequency, affects to ventilator, certain discomfort is brought to patient.
Summary of the invention
The present invention in view of the above-mentioned prior art situation and complete, its purpose is to provide a kind of high frequency respirator systems
System.
For this purpose, the present invention provides a kind of high frequency respirator systems, which is characterized in that the high frequency respirator includes high frequency
Oscillation module, air-breathing circuit, expiration circuit and safety return circuit, the high frequency respirator carry out the defeated of gas using turbofan
Send, the high frequency oscillation module is located in the air-breathing circuit, the both ends of the safety return circuit respectively with the air-breathing circuit with
The expiration circuit communication is provided with the first shut-off valve in the safety return circuit.
As a result, when the high frequency oscillation module is abnormal, the height can be reduced by turbofan and safety return circuit
The influence that frequency oscillation module ventilates to patient end.
The present invention also provides a kind of ventilation control methods of high frequency respirator, comprising:
Obtain the current frequency and current patents' end pressure of the high frequency respirator；
Calculate the frequency difference of the current frequency Yu the predeterminated frequency:
If the absolute value of the frequency difference is greater than setpoint frequency threshold value, carries out current patents' end pressure and setting is suffered from
The comparison of person's end pressure, and calculate the pressure difference value of current patents' end pressure and setting patient's end pressure；
If current patents' end pressure is greater than the setting patient end pressure and the pressure difference value is greater than setting pressure
Threshold value is controlled according to safety return circuit or turbofan of the current frequency to the high frequency respirator；If described current
Patient's end pressure is less than the setting patient end pressure and the pressure difference value is less than setting pressure threshold, according to the current frequency
Rate controls the turbofan.
Optionally, described to be controlled according to safety return circuit or turbofan of the current frequency to the high frequency respirator
System includes:
The current frequency is carried out compared with the predeterminated frequency；
If the current frequency is greater than the predeterminated frequency, the control of the safety return circuit is carried out；If the current frequency
Less than the predeterminated frequency, the revolving speed for controlling the turbofan is reduced.
Optionally, after the revolving speed for controlling the turbofan reduces, when the pressure difference value is less than setting pressure threshold
When, the revolving speed for controlling the turbofan carries out wave variation centered on current rotating speed.
Optionally, the control for carrying out the safety return circuit is to control the safety return circuit to alternately turn on and close.
Optionally, it is described according to the current frequency to the turbofan carry out control include:
If the current frequency is greater than the predeterminated frequency, the revolving speed for controlling the turbofan is increased；If described current
Frequency is less than the predeterminated frequency, controls the carry out speed change rotation of the turbofan.
Optionally, the carry out speed change rotation of the control turbofan is the revolving speed of the control turbofan to work as
Wave variation is carried out centered on preceding revolving speed.
It compares and the prior art, the ventilation control method of high frequency respirator of the present invention is had compared with the prior art
Some is advantageous in that:
When the frequency of high frequency oscillation module is interfered, due to the presence of the disturbance, it can not provide and precisely adjust, and
New disturbance may be brought, directly the frequency of high frequency oscillation module is not adjusted, in conjunction with patient's end pressure and current frequency,
By different adjustable strategies, by means of safety return circuit, perhaps turbofan is changed the pressure or frequency of gas circuit, makes
The frequency of the high frequency oscillation module is moved closer in setpoint frequency.
The present invention also provides a kind of ventilation control devices of high frequency respirator, comprising:
Acquiring unit, for obtaining the current frequency and current patents' end pressure of the high frequency respirator；
Computing unit, for calculating the frequency difference of the current frequency Yu the predeterminated frequency:
If the absolute value that the computing unit is also used to the frequency difference is greater than setpoint frequency threshold value, carry out described current
Patient's end pressure calculates current patents' end pressure and setting patient's end pressure compared with setting patient's end pressure
Pressure difference value；
Control unit, if being greater than the setting patient end pressure and the pressure difference value for current patents' end pressure
Greater than setting pressure threshold, controlled according to safety return circuit or turbofan of the current frequency to the high frequency respirator
System；If described control unit is also used to current patents' end pressure less than the setting patient end pressure and the pressure difference value
Less than setting pressure threshold, the turbofan is controlled according to the current frequency.
Compared with the prior art, beneficial effect possessed by the ventilation control device of high frequency respirator of the present invention with
The ventilation control method of the high frequency respirator is identical, and details are not described herein.
The present invention also provides a kind of high frequency respirator, including be stored with computer program computer readable storage medium and
Processor when the computer program is read and run by the processor, realizes high frequency respirator described in any of the above embodiments
Ventilation control method.
Compared with the prior art, beneficial effect possessed by high frequency respirator of the present invention and the high frequency breathe
The ventilation control method of machine is identical, and details are not described herein.
The present invention also provides a kind of computer readable storage medium, the computer-readable recording medium storage has computer
Program when the computer program is read out by the processor and runs, realizes the ventilation of high frequency respirator described in any of the above embodiments
Control method.
Compared with the prior art, beneficial effect possessed by computer readable storage medium of the present invention and described
The ventilation control method of high frequency respirator is identical, and details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies mode and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of high frequency respirator system involved in embodiments of the present invention；
Fig. 2 is the control method flow chart of high frequency oscillation module involved in embodiments of the present invention；
Fig. 3 is the control device schematic diagram of high frequency oscillation module involved in embodiments of the present invention.
Description of symbols:
1- control device；101- acquiring unit；102- control unit；103- computing unit；2- proportioning valve, 3- safety valve,
4- check valve, 5- high frequency oscillation module, 6- third pressure flow sensor, the 4th pressure flow sensor of 7-, 8- breather valve, 9-
Temperature sensor, the first shut-off valve of 10-, 11- turbofan, 12- pressure flow sensor, the second shut-off valve of 13-, 14- mixing
Room, 15- compressed oxygen gas source, 16- pressure reducing valve, 17- check-valves, 18- first pressure flow sensor, 19- filter, 20- fluid stopping
Valve, 21- oxygen concentration sensor.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can
To be combined with each other.The present invention, which essentially consists in, protects a kind of ventilation control method, and this method is based on height as described in the examples in text
Frequency respirator system.
In addition, the orientation such as " among " and " between " for being previously mentioned in embodiments of the present invention description, does not imply that knot
Between on structure and among, but in gas circuit relationship between among, involved interconnected structure is logical in text
Pipeline connection is crossed, in addition, the description of the words such as " first ", " second " in text is not constituted to specific amount of limitation, but
Simplifying description and distinguishing to facilitate the understanding of the present invention, is not considered as limiting the invention.
Below with reference to attached drawing and in conjunction with embodiment, the present invention will be described in detail.
The present embodiment provides a kind of high frequency respirator system, including turbofan 11, compressed oxygen gas source 15, mixing chamber 14,
Air-breathing circuit and high frequency oscillation module 5, the turbofan 11 and the compressed oxygen gas source 15 connect with the mixing chamber 14 respectively
Logical, the mixing chamber 14 is also connected with the air-breathing circuit；The high frequency oscillation module 5 is located at the air-breathing circuit, is suitable for
The gas in the air-breathing circuit is set to generate oscillation pressure ripple.
It should be noted that the air-source and compressed oxygen gas source 15 are connected to the entrance of the mixing chamber 14 respectively, institute
State the outlet in air-breathing circuit Yu the mixing chamber 14.Herein, it is arranged between the turbofan 11 and the mixing chamber 14
There is the second shut-off valve 13, controlled by the gas that second shut-off valve 13 is transported to mixing chamber 14 to turbofan 11,
Reduce risk.It is additionally provided with pressure reducing valve 16 between the compressed oxygen gas source and the mixing chamber, for adjusting the defeated of compressed oxygen
The amount of sending.In addition, pressure flow sensor 12 is additionally provided between the turbofan 11 and the mixing chamber 14, to the whirlpool
The gas that wheel blower 11 is delivered to mixing chamber 14 is monitored.
Here, air first mixes air and compressed oxygen in mixing chamber 14 when being flowed into patient end, then will mixing
Gas afterwards is delivered to the patient end, on the one hand can reduce the disturbance of gas after turbofan 11 compresses, and plays one and delays
On the other hand the effect of stream mixes air and compressed oxygen in mixing chamber 14, keeps the distribution of gas average, this
Outside, when the temperature of the air conveyed in turbofan 11 is higher, compressed oxygen can also absorb what the turbofan 11 conveyed
The heat of air.
When the oxygen concentration for needing to convey is lower than 100%, the turbofan 11 is for compressing and being delivered to air
Mixing chamber mixes air and compressed oxygen, and turbofan 11 provides power for mixed gas, for conveying to patient end
Gas.And when patient end needs to carry out pure oxygen, at this point, compressed oxygen is sent into air-breathing circuit, whirlpool after depressurizing by pressure reducing valve 16
It takes turns blower 11 and air communication one end is closed, conveying turbofan 11 generates high pressure draught at this time, for conveying oxygen.The height
Frequency respirator system further includes filter 19, between the turbofan 11 and the mixing chamber 14, is suitable for filtering institute
State the air of the conveying of turbofan 11.On the one hand the impurity in the gas that the turbofan 11 conveys, another party can be filtered
Face, the gas that can be conveyed to the turbofan 11 flows slowly, and after passing the gas through the filter 19, disturbance is reduced.
Certainly, the filter 19 also can be set at air intake, that is, be arranged before the turbofan 11.
Here, the high frequency oscillation module includes actuator, piston and diaphragm, and the diaphragm is set on the piston,
The actuator drives the piston to do straight reciprocating motion, so that gas be made to generate positive/negative-pressure Reeb.When turbofan 11 is defeated
When the gas sent flow to the high frequency oscillation module 5, high frequency oscillation module 5 drives diaphragm to move back and forth by actuator, makes gas
Oscillation pressure ripple is generated in body.Here, the amplitude of the high frequency oscillation module is up to 100mbar, ventilatory frequency 3-20Hz.
The advantages of this arrangement are as follows being used cooperatively by turbofan 11 and high frequency oscillation module 5, is substituted common using air
Compressed air will be delivered to patient end after supercharging air by turbofan, without using compressed air source.
In general, there may be disturbances for the gas of the conveying of turbofan 11, and there is also right for the high frequency oscillation module 5
The interference of upstream gas circuit.As shown in Figure 1, the high frequency respirator system further includes proportioning valve 2, it is located in the air-breathing circuit
And between the high frequency oscillation module 5 and the mixing chamber 14, gas is flowed to through the proportioning valve 2 in the mixing chamber 14
The high frequency oscillation module 5.It should be noted that flowing to the high frequency oscillation module from the gas that the mixing chamber 14 flows out
When 5, the proportioning valve 2 is first passed through, the flow and pressure for flowing to the high frequency oscillation module 5 are then adjusted by the proportioning valve 2
On the one hand power can reduce the disturbance for the gas that the turbofan 11 conveys, separately furthermore by the setting of the proportioning valve 2
On the one hand, conveying is adjusted to the gas pressure and flow of the high frequency oscillation module 5.
Further, since there may be negative pressure for turbofan, gas backstreaming is caused, high frequency respirator system described here is also wrapped
Check-valves 17 is included, is set between the mixing chamber 14 and proportioning valve 2, for preventing the gas backstreaming in the air-breathing circuit
To in the mixing chamber 14.By the setting of check-valves, the gas circuit of high frequency oscillation unit comparative example valve upstream is also avoided to be formed dry
It disturbs.
Since the gas flow of the turbofan 11 conveying is uncontrollable, for high frequency oscillation module 5, the frequency that is worked
Rate is related to the pressure of the gas of the inflow high frequency oscillation module 5 and flow.As shown in Figure 1, the high frequency respirator system
Further include first pressure flow sensor 18, is located in the air-breathing circuit and is located at the mixing chamber 14 and the proportioning valve
Between 2, it is adapted to detect for the pressure and flow of the gas that the mixing chamber 14 flows out.That is, being mixed in the gas from described
When closing the outflow of room 14, the flow and pressure of the gas flowed out to it are monitored, and are then referred to the adjustment of the proportioning valve 2
It leads, so that the pressure for flowing out the gas of the proportioning valve 2 and flow is met the requirement of the preliminary high frequency oscillation module 5, increase and suffer from
The breathing of person is experienced.
At this point, in order to guarantee to flow into the accuracy of the pressure of the gas of the high frequency oscillation module 5 and flow, the high frequency
Respirator system further includes second pressure flow sensor 4, is located in the air-breathing circuit and is located at the higher-order of oscillation mould
Between block 5 and the proportioning valve 2, it is adapted to detect for flowing into the pressure and flow of the gas of the high frequency oscillation module 5.Namely
It says, before gas flows into the high frequency oscillation module 5, the flow and pressure of gas is monitored, and result is fed back to
Controller is adjusted by aperture further progress of the controller to the proportioning valve 2, to guarantee that gas flows into the high frequency vibrating
Swing the pressure of module and the accuracy of flow.
It should be noted that the high frequency respirator system further includes oxygen concentration sensor 21, it is located at the air-breathing and returns
Lu Zhong, suitable for being monitored to the oxygen concentration in the air-breathing circuit.That is, before gas is transported to patient end,
First the oxygen concentration in the air-breathing circuit is monitored, and is timely feedbacked to controller, and in time to the compressed oxygen
Source is adjusted, and makes to be input to the oxygen concentration of patient end closer to optimum value.
Since turbofan 11 is when conveying gas, the temperature of turbofan 11 can be gradually increased, described so as to cause sending
The temperature for the gas that turbofan 11 flows into increases, and is measured the work due to turbofan 11, flows out from the mixing chamber 14
The temperature of gas be even as high as 51 DEG C.At this point, refrigerator is provided in the mixing chamber 14, suitable for making in mixing chamber 14
Gas cooling.It should be noted that the refrigerator can be semiconductor cooler, refrigerator may be cooling fan.
In addition, the high frequency respirator system further includes temperature sensor 9, it is located in air-breathing circuit, is located at patient
Between end and the mixing chamber 14, suitable for monitoring the gas temperature in air-breathing circuit.Here, gas temperature is supervised in real time
It surveys, and sends controller to, when the gas temperature in the air-breathing circuit is higher than setting value, increase the running power of refrigerator
Or increase the oxygen-supplying amount of compressed oxygen gas source.
Since the gas of the turbofan 11 conveying is uncontrollable, in order to reduce risk, the high frequency respirator system is also
Including safety valve 3, the safety valve 3 is located in the air-breathing circuit.In case of emergency, the air-breathing circuit and atmosphere are connected
Logical, the gas for conveying the turbofan 11 is exhausted directly among air.
In addition, the high frequency respirator system further includes expiration circuit, it is used for the discharge of the gas of patient's exhalation, it is described
The outlet in expiration circuit is provided with breather valve 8.In order to further enhance security performance, the high frequency respirator system further includes peace
The air-breathing circuit and expiration circuit communication are provided with the first shut-off valve 10 in the safety return circuit by full loop.Described
One shut-off valve 10 is opened when sucking gas and being abnormal (usually gas flow or pressure is excessive), at this point, breather valve 8
Open simultaneously, to be provided with check valve 7 in the expiration circuit at this time for outside a part of gas discharge chamber, only limit gas from
The expiration circuit is exhaled, and preventing gas from exhalation circuit is that patient supplies.
Here, the entrance of the safety return circuit is between the proportioning valve 2 and the high frequency oscillation module, i.e., the described peace
The connectivity part in full loop and the air-breathing circuit is located at the upstream of the high frequency oscillation module 5, and the high frequency respirator system is also
Including flow-stop valve 20, it is set in air-breathing circuit and between the high frequency oscillation module and patient end, the flow-stop valve
20 be check valve, is suitable for gas and passes through to patient end, prevents patient exhalation air from 20 reflux of flow-stop valve.
In addition, the high frequency respirator system further includes third pressure flow sensor 6, commonly referred to as patient (proximal end) flows
(pressure) sensor is measured, patient end is set to, suitable for being monitored to the pressure and flow of patient's sucking and the gas breathed out,
Under normal circumstances, the third pressure flow sensor 6 is suitable for monitoring the mean airway pressure of patient.Here, the third pressure
Flow sensor 6 is set between the air-breathing circuit and the infall and patient end in the expiration circuit.
It should be noted that above-mentioned high frequency respirator system is in Conventional ventilation, high frequency oscillation module is closed, described in unlatching
Turbofan is reached realization by the valve in control duration of ventilation and gas circuit and supplied gas at regular time and quantity；When carrying out high-frequency ventilation,
A lasting basic air-flow is provided by the turbofan, to guarantee the stabilization of the mean airway pressure of patient end, is opened
The high frequency oscillation module sets the amplitude and frequency of the high frequency oscillation module, is cooperated by the high frequency oscillation module real
Existing high frequency oscillatory ventilation.
In embodiment, only the gas circuit of high frequency respirator system is expounded.
Due to carrying out the driving of gas using turbofan 11, respiratory quotient can generate certain do to high frequency oscillation module 5
It disturbs, causes the frequency of oscillation of high frequency oscillation module 5 different from predeterminated frequency, affect to ventilator.For example, when exhaling
When inhaling than being 1:1, the frequency of oscillation of high frequency oscillation module setting is 20Hz, and respiratory quotient may generate 5- to frequency of oscillation at this time
The interference of 15Hz.The present embodiment provides a kind of ventilation control methods of high frequency respirator, comprising:
S1: the current frequency and current patents' end pressure of the high frequency respirator are obtained；
S2: the frequency difference of the current frequency Yu the predeterminated frequency is calculated:
S3: it if the absolute value of the frequency difference is greater than setpoint frequency threshold value, carries out current patents' end pressure and sets
Determine the comparison of patient's end pressure, and calculates the pressure difference value of current patents' end pressure and setting patient's end pressure；
S4: if current patents' end pressure is greater than the setting patient end pressure and the pressure difference value is greater than setting pressure
Force threshold is controlled according to safety return circuit or turbofan of the current frequency to the high frequency respirator；If described work as
Preceding patient's end pressure is less than the setting patient end pressure and the pressure difference value is less than setting pressure threshold, according to described current
Frequency controls the turbofan.
In S1, the current frequency of the high frequency respirator refers to the high frequency oscillation module work in the high frequency respirator
Actual oscillation frequency when making, patient's end pressure refer to the pressure according to measured by the third pressure flow sensor 6
The average pressure that power is calculated, that is, the mean airway pressure (MAP) of patient.Current frequency and current patents' end pressure are also
It is the frequency of oscillation and patient's end pressure of the high frequency oscillation module measured in real time.
In S2, when predeterminated frequency refers to be the starting high frequency respirator, the vibration of the high frequency oscillation module of setting
Swing frequency.In S3, only when the frequency difference of the current frequency and the predeterminated frequency is greater than setpoint frequency threshold value,
It performs the next step, the setpoint frequency threshold value is the equal of the range that an error allows.Setting patient's end pressure refers to pre-
The goal pressure being first arranged.
It is described to be controlled according to safety return circuit or turbofan of the current frequency to the high frequency respirator in S4
System includes: to carry out the current frequency compared with the predeterminated frequency；If the current frequency is greater than the predeterminated frequency, into
The control of the row safety return circuit；If the current frequency is less than the predeterminated frequency, the revolving speed drop of the turbofan is controlled
It is low.Here, meeting current patents' end pressure greater than the setting patient end pressure and the pressure difference value is greater than and sets
After pressure threshold, the current frequency is carried out compared with the predeterminated frequency, for different frequency separations, is executed different
Ventilator control strategy.Since current patents' end pressure is greater than setting patient's end pressure, at this point, generally requiring to the height
Frequency oscillation module 5 carries out the range of decrease or down conversion process, and still, the setpoint frequency of the high frequency oscillation module 5 does not change, this
When be therefore, to be carried out at the range of decrease or frequency reducing without the high frequency oscillation module 5 herein caused by the interference of respiratory quotient
Reason reduces interference of the respiratory quotient to high frequency oscillation module 5 by the effect of safety return circuit.If the current frequency is less than described
Predeterminated frequency, the revolving speed for controlling the turbofan reduce, and make the reduction of patient's end pressure.
Here, after the revolving speed for controlling the turbofan reduces, when the pressure difference value is less than setting pressure threshold,
The revolving speed for controlling the turbofan carries out wave variation centered on current rotating speed.Since current frequency is less than described preset
Therefore frequency is changed by the wave of the turbofan revolving speed, be equivalent to and give sucking gas vibration by the variation of revolving speed
It swings.In general, the wave variation is fluctuated with being similar to sinusoidal shape.It should be noted that described carry out the peace
The control of full loop is to control the safety return circuit to alternately turn on and close.When the safety return circuit is opened, the safety
Circuit can export the gas in the air-breathing circuit, to make patient end pressure reduction, thus the positive normal open for the machine that ensures respiration
Gas.
In S4, if it is described according to the current frequency to the turbofan carry out control include: the current frequency
Greater than the predeterminated frequency, the revolving speed for controlling the turbofan is increased；If the current frequency is less than the predeterminated frequency, control
Make the carry out speed change rotation of the turbofan.It should be noted that at this point, since the pressure difference value is less than setting pressure threshold
Value, therefore, it is necessary to promote patient's end pressure to promote patient end oxygen-supplying amount in other words, herein, increases the revolving speed of turbofan, thus
Patient's end pressure can directly be increased, when current patents' end pressure and the absolute value of the difference of setting patient's end pressure are less than
When setting pressure threshold, the revolving speed of turbofan returns back to the revolving speed before increasing.Here, since current frequency is less than described preset
Frequency, therefore rotated using speed change, it is equivalent to generation disturbance, increases the oxygen absorbed of patient.
Specifically, the carry out speed change rotation of the control turbofan is the revolving speed of the control turbofan to work as
Wave variation is carried out centered on preceding revolving speed.Therefore, changed by the wave of the turbofan revolving speed, be equivalent to sucking
Gas one oscillation, so that gas be made more effectively to be absorbed.In general, the wave variation is to be similar to sinusoidal shape
Shape fluctuation.
The advantages of this arrangement are as follows when the frequency of high frequency oscillation module is interfered, due to the presence of the disturbance, nothing
Method, which provides, to be precisely adjusted, thereby increases and it is possible to be brought new disturbance, is not adjusted to the frequency of high frequency oscillation module directly, in conjunction with trouble
Person's end pressure and current frequency, by different adjustable strategies, by means of safety return circuit or turbofan, to the pressure of gas circuit
Or frequency is changed, and moves closer to the frequency of the high frequency oscillation module in setpoint frequency.
The present embodiment provides a kind of ventilation control devices 1 of high frequency respirator, comprising:
Acquiring unit 101, for obtaining the current frequency and current patents' end pressure of the high frequency respirator；
Computing unit 103, for calculating the frequency difference of the current frequency Yu the predeterminated frequency:
If the absolute value that the computing unit 103 is also used to the frequency difference is greater than setpoint frequency threshold value, described in progress
Current patents' end pressure calculates current patents' end pressure and the setting patient end compared with setting patient's end pressure
The pressure difference value of pressure；
Control unit 102, if being greater than the setting patient end pressure and the pressure for current patents' end pressure
Difference is greater than setting pressure threshold, is carried out according to safety return circuit or turbofan of the current frequency to the high frequency respirator
Control；If described control unit is also used to current patents' end pressure less than the setting patient end pressure and the pressure difference
Value is less than setting pressure threshold, is controlled according to the current frequency the turbofan.
Beneficial effect possessed by the ventilation control device of high frequency respirator described in the present embodiment is exhaled with the high frequency
The ventilation control method of suction machine is identical, and details are not described herein.
The present embodiment provides a kind of high frequency respirator, including be stored with computer program computer readable storage medium and
Processor when the computer program is read and run by the processor, realizes high frequency respirator described in any of the above embodiments
Ventilation control method.Beneficial effect possessed by high frequency respirator described in the present embodiment is logical with the high frequency respirator
Pneumatic control method is identical, and details are not described herein.
The present embodiment provides a kind of computer readable storage medium, the computer-readable recording medium storage has computer
Program when the computer program is read out by the processor and runs, realizes the ventilation of high frequency respirator described in any of the above embodiments
Control method.Beneficial effect possessed by computer readable storage medium described in the present embodiment and the high frequency oscillation module
Control method it is identical, details are not described herein.Beneficial effect possessed by computer readable storage medium described in the present embodiment
Identical as the ventilation control method of the high frequency respirator, details are not described herein.
The foregoing is merely better embodiments of the invention, are not intended to limit the invention, any this field skill
Art personnel, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of high frequency respirator system, which is characterized in that the high frequency respirator includes high frequency oscillation module (5), air-breathing time
Road, expiration circuit and safety return circuit, the high frequency respirator carry out the conveying of gas, the higher-order of oscillation mould using turbofan
Block (5) is located in the air-breathing circuit, and the both ends of the safety return circuit connect with the air-breathing circuit and the expiration circuit respectively
It is logical, the first shut-off valve (10) are provided in the safety return circuit.
2. a kind of ventilation control method of high frequency respirator characterized by comprising
Obtain the current frequency and current patents' end pressure of the high frequency respirator；
Calculate the frequency difference of the current frequency and predeterminated frequency；
If the absolute value of the frequency difference is greater than setpoint frequency threshold value, current patents' end pressure and setting patient end are carried out
The comparison of pressure, and calculate the pressure difference value of current patents' end pressure and setting patient's end pressure；
If current patents' end pressure is greater than the setting patient end pressure and the pressure difference value is greater than setting pressure threshold,
It is controlled according to safety return circuit or turbofan of the current frequency to the high frequency respirator；If the current patents end
Pressure is less than the setting patient end pressure and the pressure difference value is less than setting pressure threshold, according to the current frequency to institute
Turbofan is stated to be controlled.
3. the ventilation control method of high frequency respirator according to claim 2, which is characterized in that described according to described current
Frequency carries out control to the safety return circuit or turbofan of the high frequency respirator
The current frequency is carried out compared with the predeterminated frequency；
If the current frequency is greater than the predeterminated frequency, the control of the safety return circuit is carried out；If the current frequency is less than
The predeterminated frequency, the revolving speed for controlling the turbofan reduce.
4. the ventilation control method of high frequency respirator according to claim 3, which is characterized in that controlling the turbine wind
After the revolving speed of machine reduces, when the pressure difference value is less than setting pressure threshold, the revolving speed of the turbofan is controlled with current
Wave variation is carried out centered on revolving speed.
5. the ventilation control method of high frequency respirator according to claim 3, which is characterized in that described to carry out the safety
The control in circuit is to control the safety return circuit to alternately turn on and close.
6. the ventilation control method of high frequency respirator according to claim 2, which is characterized in that described according to described current
Frequency carries out control to the turbofan
If the current frequency is greater than the predeterminated frequency, the revolving speed for controlling the turbofan is increased；If the current frequency
Less than the predeterminated frequency, the carry out speed change rotation of the turbofan is controlled.
7. the ventilation control method of high frequency respirator according to claim 4, which is characterized in that the control turbine
The carry out speed change rotation of blower carries out wave variation to control the revolving speed of the turbofan centered on current rotating speed.
8. a kind of ventilation control device of high frequency respirator characterized by comprising
Acquiring unit, for obtaining the current frequency and current patents' end pressure of the high frequency respirator；
Computing unit, for calculating the frequency difference of the current frequency and predeterminated frequency:
If the absolute value that the computing unit is also used to the frequency difference is greater than setpoint frequency threshold value, the current patents are carried out
End pressure calculates the pressure of current patents' end pressure and setting patient's end pressure compared with setting patient's end pressure
Power difference；
Control unit is greater than if being greater than the setting patient end pressure and the pressure difference value for current patents' end pressure
Pressure threshold is set, is controlled according to safety return circuit or turbofan of the current frequency to the high frequency respirator；Institute
If stating, control unit is also used to current patents' end pressure less than the setting patient end pressure and the pressure difference value is less than
Pressure threshold is set, the turbofan is controlled according to the current frequency.
9. a kind of high frequency respirator, which is characterized in that computer readable storage medium and place including being stored with computer program
Device is managed, when the computer program is read and run by the processor, realizes such as the described in any item high frequencies of claim 1-7
The ventilation control method of ventilator.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer journey
Sequence when the computer program is read out by the processor and runs, realizes such as the described in any item high frequency respirators of claim 1-7
Ventilation control method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807703.8A CN110464945B (en) | 2019-08-29 | 2019-08-29 | System of high-frequency respirator, ventilation control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807703.8A CN110464945B (en) | 2019-08-29 | 2019-08-29 | System of high-frequency respirator, ventilation control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110464945A true CN110464945A (en) | 2019-11-19 |
| CN110464945B CN110464945B (en) | 2021-10-22 |
Family
ID=68513971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910807703.8A Active CN110464945B (en) | 2019-08-29 | 2019-08-29 | System of high-frequency respirator, ventilation control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110464945B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943666A (en) * | 2021-02-01 | 2021-06-11 | 杭州贝丰科技有限公司 | Method and system for compensating rotating speed of turbine fan of breathing machine and readable storage medium |
| CN114082058A (en) * | 2021-12-21 | 2022-02-25 | 河北谊安奥美医疗设备有限公司 | Functional safety control device and control method for breathing machine |
| CN115605244A (en) * | 2020-05-20 | 2023-01-13 | 深圳迈瑞生物医疗电子股份有限公司（Cn） | Medical ventilation equipment, control method and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045036A (en) * | 1989-02-27 | 1990-09-05 | 重庆大学 | High-frequency oscillation breath machine |
| JP2001346880A (en) * | 2000-06-07 | 2001-12-18 | Suzuki Motor Corp | High frequency respirator and computer readable recording medium on which its motion control program is recorded |
| CN103893864A (en) * | 2012-12-26 | 2014-07-02 | 北京谊安医疗系统股份有限公司 | Turbine respirator pressure control ventilation method |
| CN105530981A (en) * | 2013-09-05 | 2016-04-27 | 欧博纳技术有限公司 | Apparatus to provide breathing support |
-
2019
- 2019-08-29 CN CN201910807703.8A patent/CN110464945B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045036A (en) * | 1989-02-27 | 1990-09-05 | 重庆大学 | High-frequency oscillation breath machine |
| JP2001346880A (en) * | 2000-06-07 | 2001-12-18 | Suzuki Motor Corp | High frequency respirator and computer readable recording medium on which its motion control program is recorded |
| CN103893864A (en) * | 2012-12-26 | 2014-07-02 | 北京谊安医疗系统股份有限公司 | Turbine respirator pressure control ventilation method |
| CN105530981A (en) * | 2013-09-05 | 2016-04-27 | 欧博纳技术有限公司 | Apparatus to provide breathing support |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115605244A (en) * | 2020-05-20 | 2023-01-13 | 深圳迈瑞生物医疗电子股份有限公司（Cn） | Medical ventilation equipment, control method and storage medium |
| CN112943666A (en) * | 2021-02-01 | 2021-06-11 | 杭州贝丰科技有限公司 | Method and system for compensating rotating speed of turbine fan of breathing machine and readable storage medium |
| CN114082058A (en) * | 2021-12-21 | 2022-02-25 | 河北谊安奥美医疗设备有限公司 | Functional safety control device and control method for breathing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110464945B (en) | 2021-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110464951A (en) | A kind of high frequency respirator system and control method of ventilating | |
| JP7166963B2 (en) | respiratory therapy device | |
| CN105771049B (en) | Automatic respirator | |
| US8402970B2 (en) | System and method for integrated high frequency oscillatory ventilation | |
| US8960193B2 (en) | Mobile medical ventilator | |
| JP5624467B2 (en) | Apparatus and method for supplying respiratory gas | |
| JP4316138B2 (en) | Piston ventilator oxygen mixing | |
| CN105980014B (en) | Dual pressure sensor patient ventilation's equipment | |
| CN110464950A (en) | A kind of high frequency respirator system and control method of ventilating | |
| US11135392B2 (en) | Mechanical ventilator | |
| CN110464945A (en) | A kind of system of high frequency respirator, ventilation control method and device | |
| CN110464947A (en) | A kind of system and ventilation control method of high frequency respirator | |
| JPH10505765A (en) | Pressure controlled breathing assist device | |
| US20210386959A1 (en) | Mechanical ventilator | |
| CN109303960A (en) | A kind of ventilation treatment equipment and control method | |
| CN103736183A (en) | Pressure control device and method for double-level respirator | |
| WO2021163946A1 (en) | Medical ventilation device, control method, and computer readable storage medium | |
| CN112370623A (en) | Intelligent adjusting system of breathing machine and application thereof | |
| CN109621120A (en) | A kind of pipeline and Breathing Suppotion equipment with pulse oxygen inhalation and positive airway pressure function | |
| CN110464946A (en) | A kind of high frequency respirator system and control method | |
| CN113413529A (en) | Portable universal mechanical ventilation module for life support system adapted to field environment | |
| CN112704789B (en) | High-frequency oscillation respiratory airflow generation method and respiratory support equipment | |
| CN110464949A (en) | A kind of high frequency respirator system | |
| EP4228727A1 (en) | Cpap kit to support breathing | |
| WO2022040257A1 (en) | Mechanical ventilator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |