CN104707228B - Transnasal high-flow-capacity oxygen therapy pressure monitoring system and method - Google Patents
Transnasal high-flow-capacity oxygen therapy pressure monitoring system and method Download PDFInfo
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- CN104707228B CN104707228B CN201510092980.7A CN201510092980A CN104707228B CN 104707228 B CN104707228 B CN 104707228B CN 201510092980 A CN201510092980 A CN 201510092980A CN 104707228 B CN104707228 B CN 104707228B
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- 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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
Abstract
The invention provides a transnasal high-flow-capacity oxygen therapy pressure monitoring system and method. A pressure detection device detects the airway pressure in a breathing pipe of transnasal high-flow-capacity oxygen therapy equipment, obtains detection signals and sends the detection signals to a control device. The control device receives the detection signals sent by the pressure detection device after receiving first acquisition commands to obtain first detection signals and receives the detection signals sent by the pressure detection device after receiving second acquisition commands to obtain second detection signals. The control device conducts analog-digital conversion on the first detection signals and the second detection signals to obtain first detection data and second detection data respectively, conducts calculation according to the first detection data and the second detection data to obtain the airway pressure value of a patient and outputs the pressure value. The airway pressure of the patient is obtained accordingly through detection of the airway pressure in the breathing pipe, pressure monitoring reference is provided for medical staff, and the clinical use risks are lowered.
Description
Technical field
The present invention relates to field of medical technology, more particularly to a kind of per nasal high flow capacity oxygen therapy pressure monitor system and its prison
Survey method.
Background technology
NICU (Neonatal intensive care center, neonatal intensive care unit) respiratory therapy becomes at present
Gesture increasingly develops to per nasal invasive ventilation direction, and per nasal high flow capacity oxygen therapy is the per nasal ventilation mould for growing up recent years
Formula, by the empty oxygen mixer gas for exporting high temperature, high humidity, realizes the respiratory therapy to patient.Per nasal high flow capacity oxygen therapy sets
Standby ventilating mode adopts π type nasal oxygen tubes, π types nasal oxygen tube to be connected with patient nostril non-hermetic, gas in nostril after from nose
The nasal obstruction of oxygen pipe and the gap gas leakage of nasal cavity are so as to realizing producing Positive Airway Pressure in patient's nose.
Nasal oxygen tube adnexa small volume that traditional per nasal high flow capacity oxygen therapy equipment is used and softness, it is impossible in the nose of nasal oxygen tube
Add force samples port at plug, therefore per nasal high flow capacity oxygen therapy equipment be not generally monitored to patient end airway pressure,
Clinical practice risk is big.
The content of the invention
Based on this, it is necessary to for the problems referred to above, there is provided one kind can reduce per nasal high flow capacity oxygen therapy equipment clinical and use wind
The per nasal high flow capacity oxygen therapy pressure monitor system and its monitoring method of danger.
A kind of per nasal high flow capacity oxygen therapy pressure monitor system, including pressure-detecting device and control device, the pressure inspection
Survey device and connect the control device,
The pressure-detecting device is for examining to the airway pressure in the breathing pipeline of per nasal high flow capacity oxygen therapy equipment
Survey, obtain detection signal and send to the control device；The control device is for, after the first acquisition instructions are received, connecing
The detection signal for receiving the pressure-detecting device transmission obtains first detection signal, and after the second acquisition instructions are received,
The detection signal for receiving the pressure-detecting device transmission obtains the second detection signal；The control device is respectively to described first
Detection signal and the second detection signal carry out analog digital conversion and obtain the first detection data and the second detection data, and according to described
One detection data and the second detection data are calculated patient end airway pressure force value and export.
A kind of monitoring method of per nasal high flow capacity oxygen therapy pressure monitor system, comprises the following steps：
Pressure-detecting device detects to the airway pressure in the breathing pipeline of per nasal high flow capacity oxygen therapy equipment, obtains and examine
Survey signal and send to control device；
The control device receives the detection signal that the pressure-detecting device sends after the first acquisition instructions are received
Obtain first detection signal；
The control device receives the detection signal that the pressure-detecting device sends after the second acquisition instructions are received
Obtain the second detection signal；
The control device carries out analog digital conversion to the first detection signal and the second detection signal respectively and obtains first
Detection data and the second detection data；
The control device is calculated patient end airway pressure according to first detection data and the second detection data
Value is simultaneously exported.
Above-mentioned per nasal high flow capacity oxygen therapy pressure monitor system and its monitoring method, pressure-detecting device is to per nasal high flow capacity oxygen
Airway pressure in the breathing pipeline for the treatment of equipment is detected, obtains detection signal and send to control device.Control device exists
After receiving the first acquisition instructions, the detection signal for receiving pressure-detecting device transmission obtains first detection signal, and is connecing
After receiving the second acquisition instructions, the detection signal for receiving pressure-detecting device transmission obtains the second detection signal.Control device point
The other analog digital conversion that carries out to first detection signal and the second detection signal obtains the first detection data and the second detection data, and root
Patient end airway pressure force value is calculated according to the first detection data and the second detection data and is exported.For per nasal high flow capacity oxygen therapy
The nasal oxygen tube adnexa small volume of equipment and softness can not monitor the problem of patient's end pressure, by the airway pressure in breathing pipeline
Power carries out detecting and then measures patient end airway pressure, and realization provides pressure for medical personnel while per nasal high flow capacity oxygen therapy
Monitoring reference, reduces Clinical practice risk.
Description of the drawings
Fig. 1 is the structure chart of per nasal high flow capacity oxygen therapy pressure monitor system in an embodiment；
Fig. 2 is the schematic diagram of pressure-detecting device in an embodiment；
Fig. 3 is the structure chart of per nasal high flow capacity oxygen therapy pressure monitor system in another embodiment；
Fig. 4 is the structure chart of zero valve of an embodiment lieutenant colonel；
Fig. 5 is the schematic diagram of zero control circuit of an embodiment lieutenant colonel；
Fig. 6 is the flow chart of the monitoring method of per nasal high flow capacity oxygen therapy pressure monitor system in an embodiment.
Specific embodiment
It is understandable to enable the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.Elaborate many details in order to fully understand this in the following description
It is bright.But the present invention can be implemented with being much different from alternate manner described here, and those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited by following public specific embodiment.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that of the invention in limiting.
A kind of per nasal high flow capacity oxygen therapy pressure monitor system, for the patient end airway pressure to per nasal high flow capacity oxygen therapy equipment
Power is monitored.Per nasal high flow capacity oxygen therapy equipment transmits the fresh air Jing corrugated hoses for configuring aerobic concentration and flow to nose
Oxygen pipe, for patient respiration.As shown in figure 1, per nasal high flow capacity oxygen therapy pressure monitor system includes pressure-detecting device 110 and control
Device 120, the connection control device 120 of pressure-detecting device 110.
Pressure-detecting device 110 is for examining to the airway pressure in the breathing pipeline of per nasal high flow capacity oxygen therapy equipment
Survey, obtain detection signal and send to control device 120.Control device 120 is received for after the first acquisition instructions are received
The detection signal that pressure-detecting device 110 sends obtains first detection signal, and after the second acquisition instructions are received, receives
The detection signal that pressure-detecting device 110 sends obtains the second detection signal；Control device 120 respectively to first detection signal and
Second detection signal carries out analog digital conversion and obtains the first detection data and the second detection data, and according to the first detection data and
Two detection datas are calculated patient end airway pressure force value and export.
Specifically, can in design pressure sample port at the gas input port of breathing pipeline, by pressure-detecting device 110 with
Force samples port connects, and the gas of force samples port output is detected, the airway pressure in real-time monitoring breathing pipeline
Power.Pressure-detecting device 110 can adopt high accuracy differential pressure type pressure transducer, and measurement range is 1PSI, and output signal is difference
Signal.Ventilating mode button can be set in the display interface of control device 120, it is dense to being input into the oxygen of live gass of breathing pipeline
Degree and flow are configured.Patient is not connected to after breathing pipeline is connected with nasal oxygen tube, when the flow output of gas reaches setting
After value, medical personnel can be input into the first acquisition instructions by the display interface of control device 120, and control device 120 receives the
The detection signal for after one acquisition instructions sending pressure-detecting device 110 is used as first detection signal, and carries out analog digital conversion and obtain
To the first detection data, the pressure for now measuring is the pressure produced by the resistance of breathing pipeline and nasal oxygen tube, based on press
Power.Nasal oxygen tube is connected after patient, medical personnel are input into the second acquisition instructions, control by the display interface of control device 120
The detection signal that pressure-detecting device 110 is sent after receiving the second acquisition instructions by device 120 as the second detection signal, and
Carry out analog digital conversion and obtain the second detection data, the pressure for now measuring be pressure produced by the resistance of pipeline and nasal oxygen tube with
Patient end produce airway pressure sum, therefore can calculate patient end airway pressure be the second detection data with first inspection
The difference of data is surveyed, so as to obtaining patient end airway pressure force value and exporting by display interface, realizes that patient end airway pressure is monitored.
Above-mentioned per nasal high flow capacity oxygen therapy pressure monitor system, for the nasal oxygen tube adnexa volume of per nasal high flow capacity oxygen therapy equipment
Little and softness can not monitor the problem of patient's end pressure, by carrying out detecting to the airway pressure in breathing pipeline and then measuring disease
People end airway pressure, realizes providing pressure monitoring reference for medical personnel while per nasal high flow capacity oxygen therapy, reduces clinic
Application risk.Apparatus structure is simple to operation, low cost, and need not increase the devices such as extra pipeline and cause to neonate
Injury of nasal cavity is increased.
Wherein in one embodiment, as shown in Fig. 2 pressure-detecting device 110 includes detecting circuit 112, circuit is detected
112 include the first operational amplifier U1A, first resistor R189 and pressure detector U2, and the homophase of the first operational amplifier U1A is defeated
Enter end+connection constant pressure source incoming end VDRI, inverting input-connection pressure detector U2 is concrete to connect pressure detector U2's
Port-IN, and be grounded by first resistor R189, the outfan connection pressure detector U2 of the first operational amplifier U1A, specifically
Port+the IN of connection pressure detector U2.Pressure detector U2 connects control device 120, can specifically pass through port-OUT and end
Mouth+OUT is connected with control device 120.In the present embodiment, the first operational amplifier U1A adopts LMC6482AIM chips, pressure inspection
Survey device U2 and adopt NPC-1210 chips.
In the present embodiment, pressure-detecting device 110 adopts constant-current source type of drive, using the first operational amplifier U1A and the
One resistance R189 realizes Constant Current-Source Design, may be configured as 1mA to the driving current of pressure detector U2.Pressure detector U2 is used for
Airway pressure in the breathing pipeline of per nasal high flow capacity oxygen therapy equipment is detected, detection signal is obtained and is sent to control dress
Put 120.Additionally, detection circuit 112 may also include electric capacity C162, electric capacity C162 one end connects the defeated of the first operational amplifier U1A
Go out end, the other end is grounded by first resistor R189.
Wherein in one embodiment, with continued reference to Fig. 2, pressure-detecting device 110 may also include signal amplification circuit
114, the connection pressure detector U2 of signal amplification circuit 114 and control device 120, for the detection sent to pressure detector U2
Signal is transmitted after being amplified to control device 120.
Specifically, signal amplification circuit 114 includes instrumentation amplifier U3, second resistance R143,3rd resistor R140
With the 4th resistance R193, the in-phase input end IN+ of instrumentation amplifier U3 is by second resistance R143 and pressure detector U2
Connection, the port+OUT of concrete connection pressure detector U2.The inverting input IN- of instrumentation amplifier U3 is electric by the 3rd
Resistance R140 is connected with pressure detector U2, the port-OUT of concrete connection pressure detector U2.Instrumentation amplifier U3's is defeated
Go out to hold OUT to connect control device 120 by the 4th resistance R193, the feedback end REF of instrumentation amplifier U3 accesses constant electricity
Pressure.
Signal amplification circuit 114 may also include resistance R144, electric capacity C163, electric capacity C166, electric capacity C164 and electric capacity C205.
Resistance R144 one end connects the port RG+ of instrumentation amplifier U3, and the other end connects the port of instrumentation amplifier U3
RG-.Electric capacity C163 one end connects the common port of 3rd resistor R140 and instrumentation amplifier U3, other end ground connection.Electric capacity
C166 one end connects the common port of 3rd resistor R140 and instrumentation amplifier U3, other end connection second resistance R143 and instrument
The common port of table operational amplifier U3.Electric capacity C164 one end connects the public of second resistance R143 and instrumentation amplifier U3
End, other end ground connection.Electric capacity C205 one end connects the one end of the 4th resistance R193 away from instrumentation amplifier U3, electric capacity C205
The other end is grounded.
In the present embodiment instrumentation amplifier U3 adopt AD623 chips, with high input impedance, high cmrr,
Low noise, low drifting, temperature stability are good, amplification band width, the characteristics of noise coefficient is little, operational amplifier amplifies 35 times.It is logical
Cross, data acquisition accuracy can be improved.
Further, pressure-detecting device 110 may also include signal filtering circuit 116, the connection letter of signal filtering circuit 116
Number amplifying circuit 114 and control device 120, transmit for being filtered to the signal that signal amplification circuit 114 is exported after process
To control device 120.
Specifically, signal filtering circuit 116 may include the second operational amplifier U1B, the 5th resistance R190, the 6th resistance
R191 and the 7th resistance R192, the 5th resistance R190 and the 6th resistance R191 connect, the other end connection letter of the 5th resistance R190
Number amplifying circuit 114, the 4th resistance R193 of concrete connection.The other end of the 6th resistance R191 connects the second operational amplifier U1B
In-phase input end, the inverting input of the second operational amplifier U1B connects the outfan of the second operational amplifier U1B, second
The outfan of operational amplifier U1B is connected with control device 120 by the 7th resistance R192, specifically can Jing ports ADC_
Pressure is connected with control device 120.
Signal filtering circuit 116 may also include electric capacity C176, electric capacity C178 and electric capacity C187.Electric capacity C176 one end connection the
The common port of six resistance R191 and the second operational amplifier U1B, other end ground connection.Electric capacity C178 one end connects the 5th resistance R190
With the common port of the 6th resistance R191, the outfan of the other end the second operational amplifier U1B of connection.Electric capacity C187 one end connection the
The one end of seven resistance R192 away from the second operational amplifier U1B, electric capacity C187 other ends ground connection.
Second operational amplifier U1B can adopt TLC2272ACDR chips, and second-order active power filter circuit is utilized in the present embodiment
Transmit to control device 120 after process is filtered to the signal that signal amplification circuit 114 is exported, can further improve data inspection
The accuracy of survey.
Wherein in one embodiment, after control device 120 is calculated the first detection data and the second detection data, also
For process being filtered to the first detection data and the second detection data, obtain first pressure data and second pressure data；
Control device 120 is calculated patient end airway pressure force value according to first pressure data and second pressure data and exports.
In the present embodiment, control device 120 is filtered and obtains 50Hz to the first detection data and the second detection data respectively
Pressure data, by the first detection data and the second detection data be filtered process make the pressure data obtained after filtering
More stable, high precision, control device 120 calculate patient end airway pressure force value according to the pressure data obtained after filtering, equally may be used
Improve Data Detection accuracy.
Wherein in one embodiment, as shown in figure 3, per nasal high flow capacity oxygen therapy pressure monitor system also includes Zero calibration apparatus
130, Zero calibration apparatus 130 connect pressure-detecting device 110 and control device 120, and connect with the gas entry ports of breathing pipeline
It is logical.120 timing controlled Zero calibration apparatus 130 of control device are calibrated to pressure-detecting device 110, receive pressure-detecting device
110 calibration signals for sending simultaneously are calculated calibration data.
After control device 120 is calculated first pressure data and second pressure data, it is additionally operable to according to calibration data point
It is other that calibration process is carried out to first pressure data and second pressure data, obtain the first correction data and the second correction data；Control
Device processed 120 is calculated patient end airway pressure force value according to the first correction data and the second correction data and exports.
It is that also timing carries out calibration process to pressure-detecting device 110 and is calculated calibration data in the present embodiment.
Calibration process is carried out to first pressure data and second pressure data according to calibration data and obtains corresponding correction data, Ran Hougen
Patient end airway pressure force value is calculated according to correction data.First pressure data and second pressure data are calibrated, pressure is corrected
The impact that 110 temperature drift of detection means and null offset bring, can improve data monitoring degree of accuracy.Further, control dress
Put 120 also calculated first correction data and the second correction data can be shown by display interface, so as to medical personnel
Check record.
Wherein in one embodiment, as shown in Figure 4 and Figure 5, Zero calibration apparatus 130 include zero valve 132 of school and zero control of school
Circuit 134.
Zero valve 132 of school for zero signal calibration is carried out to pressure-detecting device 110, adopt by zero valve 132 of the present embodiment lieutenant colonel
With three-way valve, belong to 23 flow-through valves, by three-way valve to sensor school zero, can solve temperature drift, repeatability etc. causes pressure
Monitoring accuracy is low, the problem that error is big.
Specifically, zero valve 132 of school includes sampling end 3, atmosphere end 1 and outfan 2, sampling end 3 and the breathing of zero valve 132 of school
The gas entry ports connection of pipeline, the atmosphere end 1 of zero valve 132 of school are used for access environment gas, and environmental gas refer specifically to per nasal
The gas of high flow capacity oxygen therapy pressure monitor system local environment, in the present embodiment, atmosphere end 1 accesses air, and pressure input is 0.School
The connection pressure-detecting device 110 of outfan 2 of zero valve 132.
110 normal work of pressure-detecting device, when detecting to the airway pressure in corrugated hose, sampling end 3 with it is defeated
Go out end 2 to connect, during to 110 school zero of pressure-detecting device, sampling end 3 is closed, and outfan 2 is connected with atmosphere end 1, pressure detecting dress
Put 110 to be sent to control device 120 according to the corresponding calibration signal of environmental gas generation for accessing.Control device 120 is according to school
After calibration signal is calculated calibration data, process equally also can be filtered to calibration data, improve data accuracy.Control dress
It can send per half an hour, one hour or two hours once zero instruction of school to put 120, and the instruction of school zero can be that high level can also
It is low level.
Zero control circuit of school 134 connects zero valve 132 of school and control device 120, and control device 120 is additionally operable to timing and sends school
Zero instructs to zero control circuit 134 of school；Zero control circuit 134 of school controls adopting for zero valve 132 of school when the instruction of school zero is not received
Sample end 3 is connected with outfan 2, is connected with outfan 2 in the atmosphere end 1 for receiving control zero valve 132 of school when school zero instructs.
Wherein in one embodiment, zero control circuit 134 of school includes switching tube Q17, the 8th resistance R1 and the 9th resistance
R2.The input of switching tube Q17 is connected with zero valve 132 of school by the pin 2 of connectivity port SOLVALVE, power access end
POWER connects zero valve 132 of school by the pin 1 of connectivity port SOLVALVE.The control end of switching tube Q17 passes through the 9th resistance R2
The outfan of connecting valve pipe Q17, and by the 8th resistance R1 connect control device 120, concrete Jing ports CTRL_VALVE with
Control device 120 connects；The output head grounding of switching tube Q17.Switching tube Q17 can be specifically audion or metal-oxide-semiconductor, this enforcement
N-channel MOS pipes of the example breaker in middle pipe Q17 for IRLML2502TRPBF models.
Switching tube Q17 is turned on when its control end is high level, is turned off when its control end is low level.Zero valve 132 of school
Specific connected state is changed according to the on off operating mode of switching tube Q17.So that school zero is instructed as high level as an example, switching tube Q17 exists
Its control end is received when school zero instructs and is turned on, and the atmosphere end 1 of zero valve 132 of school is connected with outfan 2, to fill to pressure detecting
Putting 110 carries out calibration process.Switching tube Q17 is not received when school zero instructs in its control end and is turned off, the sampling end of zero valve 132 of school
3 are connected with outfan 2, so that pressure-detecting device 110 is detected to the airway pressure in breathing pipeline.
Additionally, zero control circuit 134 of school may also include diode D1, electric capacity C1, electric capacity C2, resistance R3, resistance R4 and electricity
Resistance R5.The negative electrode of diode D1 is connected with the pin 1 of connectivity port SOLVALVE, the pin of anode and connectivity port SOLVALVE
2 connections.Electric capacity C1 one end is connected with the pin 1 of connectivity port SOLVALVE, the pin 2 of the other end and connectivity port SOLVALVE
Connection.Resistance R3 and resistance R4 connects and common port connects control device 120, concrete Jing ports TEST_VALVE by resistance R5
It is connected with control device 120.The other end of resistance R3 is connected with the pin 2 of connectivity port SOLVALVE, the other end of resistance R4
Ground connection.Electric capacity C2 one end connects the common port of resistance R5 and control device 120, other end ground connection.
Detection generation sampled signal is carried out by resistance R3 and resistance R4 to send to control device to the state of zero valve 132 of school
120.According to sampled signal, control device 120 can also judge whether zero valve 132 of school exception occurs, such as work as zero control circuit 134 of school
When the sampling end 3 of control zero valve 132 of school is connected with outfan 2, if judging that sampling end 3 is not connected with outfan 2 according to sampled signal
Lead to or do not connect completely, then judge that exception occurs in zero valve 132 of school.120 exportable prompting message of control device is informing guardian
Member is overhauled in time, it is to avoid hardware fault is impacted to Data Detection, improves per nasal high flow capacity oxygen therapy pressure monitor system
Reliability.
A kind of per nasal high flow capacity oxygen therapy pressure monitor system, for the patient end airway pressure to per nasal high flow capacity oxygen therapy equipment
Power is monitored.Per nasal high flow capacity oxygen therapy equipment transmits the fresh air Jing corrugated hoses for configuring aerobic concentration and flow to nose
Oxygen pipe, for patient respiration.Per nasal high flow capacity oxygen therapy pressure monitor system includes pressure-detecting device and control device, pressure detecting
Device connects control device.
Pressure-detecting device is used to exhale per nasal high flow capacity oxygen therapy equipment when patient is not accessed and access patient respectively
Airway pressure in suction pipe road detected, the when obtaining first detection signal when not accessing patient respectively and accessing patient
Two detection signals are simultaneously sent to control device；Control device is used to carry out mould to first detection signal and the second detection signal respectively
Number is converted to the first detection data and the second detection data, and is calculated according to the first detection data and the second detection data
Patient end airway pressure force value is simultaneously exported.
Pressure-detecting device carries out pressure detecting and control device carries out the concrete mode of data processing and corresponding hard
Part structure has been carried out detailed explanation above, will not be described here.
Above-mentioned per nasal high flow capacity oxygen therapy pressure monitor system, for the nasal oxygen tube adnexa volume of per nasal high flow capacity oxygen therapy equipment
Little and softness can not monitor the problem of patient's end pressure, by carrying out detecting to the airway pressure in breathing pipeline and then measuring disease
People end airway pressure, realizes providing pressure monitoring reference for medical personnel while per nasal high flow capacity oxygen therapy, reduces clinic
Application risk.Apparatus structure is simple to operation, low cost, and need not increase the devices such as extra pipeline and cause to neonate
Injury of nasal cavity is increased.
Wherein in one embodiment, per nasal high flow capacity oxygen therapy pressure monitor system also includes Zero calibration apparatus, Zero calibration apparatus
Connection pressure-detecting device and control device, and connect with the gas entry ports of breathing pipeline.Control device timing controlled school
Zero device is calibrated to pressure-detecting device, is received the calibration signal of pressure-detecting device transmission and is calculated calibration number
According to.
Zero calibration apparatus carry out the concrete mode and corresponding hardware configuration in school zero to pressure-detecting device hereinbefore to be carried out
Detailed explanation, will not be described here.First pressure data and second pressure data are calibrated, amendment pressure inspection
The impact that unit temp drift and null offset bring is surveyed, data monitoring degree of accuracy can be improved.Further, control device may be used also
Calculated first correction data and the second correction data are shown by display interface, so that medical personnel check record.
Present invention also offers a kind of monitoring method of per nasal high flow capacity oxygen therapy pressure monitor system, high based on above-mentioned per nasal
Flow oxygen therapy pressure monitor system is realized, for being monitored to the patient end airway pressure of per nasal high flow capacity oxygen therapy equipment.Jing
Nasal height flow oxygen therapy equipment transmits the fresh air Jing corrugated hoses for configuring aerobic concentration and flow to nasal oxygen tube, exhales for patient
Inhale.As shown in fig. 6, the monitoring method of per nasal high flow capacity oxygen therapy pressure monitor system is comprised the following steps：
Step S110：Pressure-detecting device is examined to the airway pressure in the breathing pipeline of per nasal high flow capacity oxygen therapy equipment
Survey, obtain detection signal and send to control device.
Specifically, can be in design pressure sample port at the gas input port of breathing pipeline, by pressure-detecting device and pressure
Power sample port connects, and the gas of force samples port output is detected, the airway pressure in real-time monitoring breathing pipeline.
Pressure-detecting device can adopt high accuracy differential pressure type pressure transducer, and measurement range is 1PSI, and output signal is differential signal.
Step S120：Control device receives the detection letter that pressure-detecting device sends after the first acquisition instructions are received
Number obtain first detection signal.
Ventilating mode button can be set in the display interface of control device, it is dense to being input into the oxygen of live gass of breathing pipeline
Degree and flow are configured.Patient is not connected to after breathing pipeline is connected with nasal oxygen tube, when the flow output of gas reaches setting
After value, medical personnel can be input into the first acquisition instructions by the display interface of control device, and control device receives the first collection
The detection signal for after instruction sending pressure-detecting device is used as first detection signal.
Step S130：Control device receives the detection letter that pressure-detecting device sends after the second acquisition instructions are received
Number obtain the second detection signal.
Nasal oxygen tube is connected after patient, medical personnel are input into the second acquisition instructions, control by the display interface of control device
The detection signal that pressure-detecting device is sent after receiving the second acquisition instructions by device processed is used as the second detection signal.
Step S140：Control device carries out analog digital conversion to first detection signal and the second detection signal respectively and obtains first
Detection data and the second detection data.
Control device point carries out analog digital conversion to first detection signal and obtains the first detection data, and the pressure for now measuring is
Pressure produced by the resistance of breathing pipeline and nasal oxygen tube, based on pressure.Control device carries out mould to the second detection signal
Number is converted to the second detection data, and the pressure for now measuring is the pressure and patient end produced by the resistance of pipeline and nasal oxygen tube
The airway pressure sum of generation.
Step S150：Control device is calculated patient end airway pressure according to the first detection data and the second detection data
Value is simultaneously exported.
According to the first detection data and the second detection data that obtain in step S140, the air flue of patient end can be calculated
Pressure is the difference of the second detection data and the first detection data, so as to obtain patient end airway pressure force value and to pass through display interface defeated
Go out, realize that patient end airway pressure is monitored.
The specific embodiment of above step has carried out detailed in above-mentioned per nasal high flow capacity oxygen therapy pressure monitor system
Illustrate, will not be described here.
The monitoring method of above-mentioned per nasal high flow capacity oxygen therapy pressure monitor system, for the nose oxygen of per nasal high flow capacity oxygen therapy equipment
Pipe fittings small volume and softness can not monitor the problem of patient's end pressure, by detecting to the airway pressure in breathing pipeline
And then patient end airway pressure is measured, realize providing pressure monitoring reference for medical personnel while per nasal high flow capacity oxygen therapy,
Reduce Clinical practice risk.
Wherein in one embodiment, step S150 specifically includes step 152 and step 154.
Step 152：Control device is filtered process to the first detection data and the second detection data, obtains first pressure
Data and second pressure data.
Step 154：Control device is calculated patient end airway pressure according to first pressure data and second pressure data
Value is simultaneously exported.
Respectively the first detection data and the second detection data are filtered in the present embodiment, obtain the number pressure of 50Hz
According to, by the first detection data and the second detection data be filtered process make the pressure data obtained after filtering it is more stable,
High precision, control device calculate patient end airway pressure force value according to the pressure data obtained after filtering, can improve Data Detection accurate
Exactness.
Further, wherein in one embodiment, the monitoring method of per nasal high flow capacity oxygen therapy pressure monitor system is also wrapped
Include control device timing controlled Zero calibration apparatus to calibrate pressure-detecting device, receive the calibration letter that pressure-detecting device sends
Number and the step of be calculated calibration data.
Step 154 includes step 1542 and step 1544.
Step 1542：Control device is calibrated to first pressure data and second pressure data respectively according to calibration data
Process, obtain the first correction data and the second correction data.
Step 1544：Control device is calculated patient end airway pressure according to the first correction data and the second correction data
Value is simultaneously exported.
It is that also timing carries out calibration process and is calculated calibration data to pressure-detecting device in the present embodiment.Specifically
Calibrating mode has carried out detailed explanation in above-mentioned per nasal high flow capacity oxygen therapy pressure monitor system, will not be described here.
Calibration process is carried out to first pressure data and second pressure data according to calibration data and obtains corresponding correction
According to then according to correction data calculating patient end airway pressure force value.First pressure data and second pressure data are calibrated,
The impact that amendment pressure-detecting device temperature drift and null offset bring, can improve data monitoring degree of accuracy.Further, walk
After rapid 1542, may also include control device and calculated first correction data and the second correction data are passed through into display interface
The step of display, so that medical personnel check record.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (7)
1. a kind of per nasal high flow capacity oxygen therapy pressure monitor system, it is characterised in that including pressure-detecting device and control device, institute
State pressure-detecting device and connect the control device,
The pressure-detecting device is obtained for detecting to the airway pressure in the breathing pipeline of per nasal high flow capacity oxygen therapy equipment
Take detection signal and send to the control device；The control device receives institute for after the first acquisition instructions are received
The detection signal for stating pressure-detecting device transmission obtains first detection signal, and after the second acquisition instructions are received, receives
The detection signal that the pressure-detecting device sends obtains the second detection signal；The control device is detected to described first respectively
Signal and the second detection signal carry out analog digital conversion and obtain the first detection data and the second detection data；The control device is calculated
After obtaining first detection data and the second detection data, it is additionally operable to enter first detection data and the second detection data
Row Filtering Processing, obtains first pressure data and second pressure data；
The pressure-detecting device includes detecting circuit that the detection circuit includes the first operational amplifier, first resistor and pressure
Force detector, the in-phase input end connection constant pressure source incoming end of first operational amplifier, inverting input connect the pressure
Force detector, and be grounded by the first resistor, the outfan of first operational amplifier connects the pressure detector,
The pressure detector connects the control device；The pressure detector is for the air tube to per nasal high flow capacity oxygen therapy equipment
Airway pressure in road is detected, obtains detection signal and send to the control device；
Per nasal high flow capacity oxygen therapy pressure monitor system also includes Zero calibration apparatus, and the Zero calibration apparatus connect the pressure-detecting device
And control device, and connect with the gas entry ports of the breathing pipeline；School zero described in the control device timing controlled fills
Put and the pressure-detecting device is calibrated, receive the calibration signal of the pressure-detecting device transmission and be calculated calibration
Data；
After the control device is calculated the first pressure data and second pressure data, it is additionally operable to according to the calibration number
According to calibration process being carried out to the first pressure data and second pressure data respectively, obtain the first correction data and the second correction
Data；The control device is calculated patient end airway pressure force value defeated according to the first correction data and the second correction data
Go out.
2. per nasal high flow capacity oxygen therapy pressure monitor system according to claim 1, it is characterised in that the pressure detecting dress
Put, the signal amplification circuit connects the pressure detector and control device, for described
The detection signal that pressure detector sends is transmitted to the control device after being amplified.
3. per nasal high flow capacity oxygen therapy pressure monitor system according to claim 2, it is characterised in that the signal amplifies electricity
Road includes instrumentation amplifier, second resistance, 3rd resistor and the 4th resistance, the homophase input of the instrumentation amplifier
End is connected with the pressure detector by the second resistance, and the inverting input of the instrumentation amplifier is by described
3rd resistor is connected with the pressure detector, and the outfan of the instrumentation amplifier connects institute by the 4th resistance
Control device is stated, the feedback end of the instrumentation amplifier accesses constant voltage.
4. per nasal high flow capacity oxygen therapy pressure monitor system according to claim 2, it is characterised in that the pressure detecting dress
Put, the signal filtering circuit includes the second operational amplifier, the 5th resistance, the 6th resistance and the
Seven resistance, the 5th resistance and the 6th resistant series, the other end of the 5th resistance connect the signal amplification circuit, institute
The other end for stating the 6th resistance connects the in-phase input end of second operational amplifier, second operational amplifier it is anti-phase
Input connects the outfan of second operational amplifier, and the outfan of second operational amplifier is electric by the described 7th
Resistance is connected with the control device.
5. per nasal high flow capacity oxygen therapy pressure monitor system according to claim 1, it is characterised in that the Zero calibration apparatus bag
Zero control circuit of zero valve of school and school is included,
Zero valve of the school includes sampling end, atmosphere end and outfan, the sampling end of zero valve of the school and the gas of the breathing pipeline
Body input port is connected, and the atmosphere end of zero valve of the school is used for access environment gas, and the outfan connection of zero valve of the school is described
Pressure-detecting device；
Zero control circuit of the school connects zero valve of school and control device, and the control device is additionally operable to timing and sends zero finger of school
Make to zero control circuit of the school；Zero control circuit of the school controls zero valve of the school when the instruction of the school zero is not received
Sampling end is connected with outfan, and the atmosphere end that zero valve of the school is controlled when the instruction of the school zero is received is connected with outfan.
6. a kind of monitoring method of per nasal high flow capacity oxygen therapy pressure monitor system, it is characterised in that comprise the following steps：
Pressure-detecting device detects to the airway pressure in the breathing pipeline of per nasal high flow capacity oxygen therapy equipment, obtains detection and believe
Number and send to control device；The pressure-detecting device includes detecting circuit that the detection circuit includes the first operation amplifier
Device, first resistor and pressure detector, the in-phase input end connection constant pressure source incoming end of first operational amplifier are anti-phase defeated
Enter the end connection pressure detector, and be grounded by the first resistor, the outfan connection of first operational amplifier
The pressure detector, the pressure detector connect the control device；The pressure detector is for per nasal high flow capacity
Airway pressure in the breathing pipeline of oxygen therapy equipment is detected, obtains detection signal and send to the control device；
After the first acquisition instructions are received, the detection signal for receiving the pressure-detecting device transmission is obtained the control device
First detection signal；
After the second acquisition instructions are received, the detection signal for receiving the pressure-detecting device transmission is obtained the control device
Second detection signal；
The control device carries out analog digital conversion to the first detection signal and the second detection signal respectively and obtains the first detection
Data and the second detection data；
The control device is calculated patient end airway pressure force value simultaneously according to first detection data and the second detection data
Output；Wherein, control device timing controlled Zero calibration apparatus are calibrated to pressure-detecting device, are received pressure-detecting device and are sent
Calibration signal and be calculated calibration data；Control device is calculated first detection data and the second detection data
Afterwards, process is filtered to first detection data and the second detection data, obtains first pressure data and second pressure number
According to carrying out calibration process to the first pressure data and second pressure data respectively according to the calibration data, obtain first
Correction data and the second correction data；The control device is calculated patient according to the first correction data and the second correction data
End airway pressure force value is simultaneously exported.
7. a kind of per nasal high flow capacity oxygen therapy pressure monitor system, it is characterised in that including pressure-detecting device and control device, institute
State pressure-detecting device and connect the control device,
The pressure-detecting device is used to exhale per nasal high flow capacity oxygen therapy equipment when patient is not accessed and access patient respectively
Airway pressure in suction pipe road detected, the when obtaining first detection signal when not accessing patient respectively and accessing patient
Two detection signals are simultaneously sent to the control device；The control device is used for respectively to the first detection signal and the second inspection
Survey signal carries out analog digital conversion and obtains the first detection data and the second detection data, and according to first detection data and second
Detection data is calculated patient end airway pressure force value and exports.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092980.7A CN104707228B (en) | 2015-03-02 | 2015-03-02 | Transnasal high-flow-capacity oxygen therapy pressure monitoring system and method |
| PCT/CN2015/099837 WO2016138792A1 (en) | 2015-03-02 | 2015-12-30 | Nasal high-flow oxygen therapy pressure-monitoring system and monitoring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092980.7A CN104707228B (en) | 2015-03-02 | 2015-03-02 | Transnasal high-flow-capacity oxygen therapy pressure monitoring system and method |
Publications (2)
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| CN104707228A CN104707228A (en) | 2015-06-17 |
| CN104707228B true CN104707228B (en) | 2017-05-17 |
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| CN201510092980.7A Active CN104707228B (en) | 2015-03-02 | 2015-03-02 | Transnasal high-flow-capacity oxygen therapy pressure monitoring system and method |
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| WO (1) | WO2016138792A1 (en) |
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| CN104707228B (en) * | 2015-03-02 | 2017-05-17 | 深圳市科曼医疗设备有限公司 | Transnasal high-flow-capacity oxygen therapy pressure monitoring system and method |
| CN106693128B (en) * | 2015-07-14 | 2018-12-25 | 北京谊安医疗系统股份有限公司 | A kind of flow control methods of ventilator proportioning valve |
| WO2019070136A1 (en) * | 2017-10-06 | 2019-04-11 | Fisher & Paykel Healthcare Limited | Closed loop oxygen control |
| CN110780655B (en) * | 2019-07-01 | 2021-05-25 | 烟台宏远氧业股份有限公司 | Remote fault diagnosis and operation and maintenance method and system for hyperbaric oxygen chamber based on Internet of things |
| CN113271156B (en) * | 2021-05-19 | 2022-08-23 | 深圳市科曼医疗设备有限公司 | ICP electric signal communication method and ICP measuring device |
| CN113546260B (en) * | 2021-06-07 | 2023-08-22 | 中国人民解放军总医院第一医学中心 | Method, apparatus and storage medium for monitoring for use anomalies in transnasal high flow |
| CN113521461B (en) * | 2021-06-07 | 2024-01-30 | 中国人民解放军总医院第一医学中心 | Method, device and storage medium for monitoring nasal high flow usage state |
| CN116059490B (en) * | 2023-03-06 | 2023-08-04 | 苏州鱼跃医疗科技有限公司 | Pressure sensor self-correction method, system, breathing machine, controller and memory |
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| Publication number | Publication date |
|---|---|
| WO2016138792A1 (en) | 2016-09-09 |
| CN104707228A (en) | 2015-06-17 |
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