CN103893874B - Anesthesia machine and method for allowing anesthesia machine to operate normally when airway pressure sensor of anesthesia machine fails - Google Patents
Anesthesia machine and method for allowing anesthesia machine to operate normally when airway pressure sensor of anesthesia machine fails Download PDFInfo
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- CN103893874B CN103893874B CN201210580034.3A CN201210580034A CN103893874B CN 103893874 B CN103893874 B CN 103893874B CN 201210580034 A CN201210580034 A CN 201210580034A CN 103893874 B CN103893874 B CN 103893874B
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Abstract
The invention discloses an anesthesia machine which comprises a respiration loop and a sensor. The respiration loop comprises a inhaling branch and an exhaling branch. One end of the inhaling branch is connected with drive air through an inhaling valve. The other end of the inhaling branch is connected with the inhaling end of a patient. One end of the exhaling branch is connected with the exhaling end of the patient, and the other end thereof is connected to the atmosphere through a PEEP valve. The respiration loop further comprises an environment pressure sensor disposed in the respiration loop and an airway pressure sensor disposed at the inhaling end. The anesthesia machine further comprises a control unit, a processing unit and a state judging unit. The anesthesia machine has the advantages that whether the environment pressure sensor and the airway pressure sensor operate normally or not can be obtained by analyzing and judging the numeral values measured by the environment pressure sensor and the airway pressure sensor; if the airway pressure sensor fails, the environment pressure sensor is controlled to measure the pressure in an airway, and normal operation of the anesthesia machine is guaranteed.
Description
Technical field
The present invention relates to the monitoring technical field of anesthetic machine intra-airway pressure, more particularly, to a kind of anesthetic machine and its in air flue
The method of normal work under pressure sensor failure.
Background technology
During the use of respirator and anesthetic machine, need to such as PIP, Map, inspiratory standstill pressure
（Platform pressure）, the airway pressure of end-tidal pressure etc. detected.It is additionally, since airway pressure continuous within each breathing cycle
Change, so that carrying out real-time detection and measurement using airway pressure sensor to airway pressure, to prevent airway pressure from going out
Existing unstable phenomenon fluctuated, it is ensured that effective ventilate, thus protecting patient safety, prevents severe complication.
As shown in figure 1, in existing anesthetic machine or respirator, generally, ambient pressure sensor 3 ＇ is arranged on and breathes back
The outside on road, airway pressure sensor 4 ＇ is arranged in breathing circuit, needs airway pressure is carried out in anesthetic machine work process
Monitor in real time, on the one hand prevent too high air pressure from patient is damaged, on the other hand provide gas to the control system of closed loop
Road pressure parameter；Also ambient pressure is detected, for compensating to atmospheric pressure simultaneously.Airway pressure be one relatively
Pressure, with respect to atmospheric pressure, airway pressure is a very important constant in actual applications, for calculating peak value pressure
Power, platform pressure, carry out Stress control, calculate compliance etc..Airway pressure is detected using airway pressure sensor, its detection
Scope is that -2KPa arrives 10KPa, and in prior art, airway pressure sensor is placed in exhalation vents detection airway pressure, and ambient pressure passes
Sensor is then directly to air, if this airway pressure sensor is damaged, anesthetic machine can not detect airway pressure, causes
Make machine cannot normal work, or even patient can be damaged.
Content of the invention
It is an object of the invention to propose a kind of anesthetic machine and its under airway pressure sensor fault normal work side
Method, can send alarm signal in ambient pressure sensor or airway pressure sensor failure, and when airway pressure passes
The normal operation of anesthetic machine when sensor breaks down, is guaranteed using the numerical value of ambient pressure sensor measurement, so that anesthesia
Machine has higher safety, stability and reliability.
For reaching this purpose, the present invention employs the following technical solutions：
A kind of anesthetic machine, including breathing circuit, described breathing circuit includes inspiration limb, and one end of described inspiration limb leads to
Cross inlet valve and connect driving gas, the other end is connected with the suction end of patient；Expiration branch road, one end of described expiration branch road and disease
The expiration end of people connects, and the other end is connected to air by PEEP valve it is characterised in that described expiration loop also includes being arranged on
Ambient pressure sensor in breathing circuit, and it is arranged on the airway pressure sensor of described suction end；
Described anesthetic machine also includes control unit, processing unit and condition adjudgement unit；
Described processing unit is connected with described ambient pressure sensor and air flue pressure transducer, receives sensor and records number
According to, and this data is processed；
Described state processing unit is connected with described processing unit, and judges environment pressure according to the data of processing unit processes
Force transducer or airway pressure sensor whether normal work；
Described state processing unit is also connected with control unit, and it will determine that result feeds back to control unit；
Described control unit is connected with described ambient pressure sensor and air flue pressure transducer, controls described ambient pressure
Sensor and the work of air flue pressure transducer, and when state processing unit judges airway pressure sensor failure,
Control unit controls described ambient pressure sensor that measurement intra-airway pressure is measured it is ensured that anesthetic machine normally runs.
As a kind of preferred version of above-mentioned anesthetic machine, described ambient pressure sensor is arranged on described inspiration limb,
And it is located at the rear portion of inlet valve or the position being arranged on airway pressure sensor.
As a kind of preferred version of above-mentioned anesthetic machine, after described ambient pressure sensor is arranged on electronic flowmeter
End.
As a kind of preferred version of above-mentioned anesthetic machine, described anesthetic machine also includes alarm unit, this alarm unit and control
Unit processed connects, when ambient pressure sensor or airway pressure sensor produce fault and send alarm signal.
As a kind of preferred version of above-mentioned anesthetic machine, described ambient pressure sensor and air flue pressure sensor failure shape
The different alarm signal of state correspondence.
A kind of method of anesthetic machine as described above normal work under airway pressure sensor fault, it includes following
Step：
Step A：Control unit controls described ambient pressure sensor measurement atmospheric pressure and/or atmospheric pressure and airway pressure
Airway pressure in the air pressure sum of power and the described airway pressure force sensor measuring air flue of control；
Step B：, by the data transfer measuring to processing unit, described processing unit is to described airway pressure for described sensor
Power compares with the difference of described air pressure sum and atmospheric pressure；
Step C：State processing unit judges described ambient pressure sensor and/or gas according to the analysis result of processing unit
Road pressure transducer whether normal work；
Step D：Result of determination is fed back to control unit by state processing unit, if airway pressure sensor failure, controls
Unit controls ambient pressure sensor measurement intra-airway pressure it is ensured that anesthetic machine normally runs, if airway pressure sensor is normal
Work repeat the above steps.
As a kind of preferred version of above-mentioned anesthetic machine method of normal work under airway pressure sensor single failure,
The described air pressure sum obtaining in stepb is the airway pressure being recorded by ambient pressure sensor with the difference of described atmospheric pressure
Power.
As a kind of preferred version of above-mentioned anesthetic machine method of normal work under airway pressure sensor single failure,
In step D, if when ambient pressure sensor and/or airway pressure sensor failure, control unit controls described alarm
Unit signal an alert.
As a kind of preferred version of above-mentioned anesthetic machine method of normal work under airway pressure sensor single failure,
Described alarm signal includes signal lighties or alarm sound.
As a kind of preferred version of above-mentioned anesthetic machine method of normal work under airway pressure sensor single failure,
In step, ambient pressure sensor can normally measure atmospheric pressure.
Beneficial effects of the present invention are：The present invention passes through to provide a kind of anesthetic machine and its under airway pressure sensor fault
The method of normal work, it is by being arranged on ambient pressure sensor in breathing circuit, and is surveyed using ambient pressure sensor
It can be deduced that ambient pressure sensor is gentle compared with the airway pressure that the airway pressure force value obtaining is recorded with airway pressure sensor
Whether road pressure transducer is under normal working condition；Simultaneously when airway pressure sensor failure, ambient pressure
Sensor can also measure to the pressure in air flue, it may thereby be ensured that the normal work of anesthetic machine.
Brief description
Fig. 1 is the structural representation of the set location of ambient pressure sensor in prior art；
Fig. 2 is the structural representation of the breathing circuit that the ambient pressure sensor that the present invention provides is arranged on inlet valve rear end
Figure；
Fig. 3 is that the structure of the breathing circuit that the ambient pressure sensor that the present invention provides is arranged on electronic flowmeter rear end is shown
It is intended to；
Fig. 4 is the breathing circuit that the ambient pressure sensor that the present invention provides is arranged on airway pressure sensor set location
Structural representation；
Wherein：
1：Inlet valve；2：Breathe end；3：Ambient pressure sensor；4：Airway pressure sensor；5：Electronic flowmeter；
3 ＇：Ambient pressure sensor；4 ＇：Airway pressure sensor；
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
As shown in Figures 2 to 4, the invention provides a kind of anesthetic machine, it has sends out when the airway pressure sensor of anesthetic machine
During raw fault, in the presence of ambient pressure sensor it is ensured that anesthetic machine still can normal work, wherein anesthetic machine specifically wraps
Include breathing circuit, this loop includes inspiration limb, one end of this inspiration limb is passed through inlet valve 1 and connected driving gas, the other end
It is connected with the suction end 2 of patient；Expiration branch road, one end of this expiration branch road is connected with the expiration end 2 of patient, and the other end passes through
PEEP valve is connected to air, and wherein expiration loop also includes the ambient pressure sensor 3 being arranged in breathing circuit, and setting
In the airway pressure sensor 4 of described suction end 2, this airway pressure sensor is used for the measurement of intra-airway pressure.
This anesthetic machine also includes control unit, processing unit and condition adjudgement unit；
Wherein, processing unit is connected with ambient pressure sensor 3 and air flue pressure transducer 2, surveys for receiving sensor
Obtain data, and this data is processed；
State processing unit is connected with described processing unit, and judges that ambient pressure passes according to the data of processing unit processes
Sensor or airway pressure sensor whether normal work；
State processing unit is also connected with control unit, and it will determine that structural feedback to control unit；
Control unit is connected with ambient pressure sensor 3 and air flue pressure transducer 2, for controlling described ambient pressure to pass
Sensor and the work of air flue pressure transducer, and when state processing unit judges airway pressure sensor failure, control
Unit processed controls described ambient pressure sensor that measurement intra-airway pressure is measured it is ensured that anesthetic machine normally runs.
Above-mentioned ambient pressure sensor 3 is used for measuring the air pressure sum of atmospheric pressure and/or atmospheric pressure and airway pressure,
The difference of this air pressure sum and atmospheric pressure, i.e. with respect to the value of atmospheric pressure, is consistent with the value of airway pressure, adopts simultaneously
Compared with the airway pressure that the airway pressure force value that ambient pressure sensor 3 records is recorded with airway pressure sensor 4 it can be deduced that
Whether ambient pressure sensor 3 and air flue pressure transducer 4 are under normal working condition；Simultaneously when airway pressure sensor
4 when breaking down, and ambient pressure sensor 3 can also measure to the pressure in air flue, it may thereby be ensured that anesthetic machine
Normal work.
As shown in Figure 2 and Figure 3, above-mentioned ambient pressure sensor 3 is arranged on inspiration limb, and is located at the rear portion of inlet valve 2
Or it is arranged on the position of airway pressure sensor 4, it does not affect while intra-airway pressure accurately can be measured
The measurement of air pressure to external world.
As shown in figure 4, ambient pressure sensor 3 can also be arranged on the rear end of electronic flowmeter 5, it is in measurement airway pressure
While the effect of power, may also participate in electronic flowmeter 5 and by pressure change, electronic flow is impacted in respiratory
Compensation calculation.
Above-mentioned anesthetic machine also includes alarm unit, and this alarm unit is connected with control unit, when ambient pressure sensor 3 or
When airway pressure sensor 4 produces fault, control unit controls alarm unit to send alarm signal, and this alarm signal at least includes
Signal lighties or alarm sound, when breaking down with air flue pressure transducer 4 corresponding alarm signal is not or not ambient pressure sensor 3 simultaneously
With when such as ambient pressure sensor 3 breaks down, the signal lighties of corresponding yellow are bright, when airway pressure sensor 4 breaks down pair
The red eye answered is bright.
In order to be further described to above-mentioned anesthetic machine present invention also provides a kind of anesthetic machine senses in airway pressure
The method of normal work under device single failure, it is applied to when the airway pressure sensor failure of anesthetic machine, in environment
In the presence of pressure transducer, anesthetic machine still can normal work, simultaneously the method be not limited only to anesthetic machine it equally also fitted
Comprise the following steps for respirator the method：
Step A：Control unit controls described ambient pressure sensor measurement atmospheric pressure and/or atmospheric pressure and airway pressure
Airway pressure in the air pressure sum of power and the described airway pressure force sensor measuring air flue of control；
Step B：Described ambient pressure sensor and air flue pressure transducer are by the data transfer measuring to control unit
Control；
Step C：Control unit passes data to processing unit, and described processing unit is to described airway pressure with described gas
Pressure sum is compared with the difference of atmospheric pressure；
Step D：State processing unit judges described ambient pressure sensor and/or gas according to the analysis result of processing unit
Road pressure transducer whether normal work, if airway pressure sensor failure, anesthetic machine is measured by ambient pressure sensor
Pressure value carrys out normal work, if airway pressure normal operation of sensor repeat the above steps.In step, ambient pressure sensing
Device does not affect its normal detection atmospheric pressure while measuring atmospheric pressure with airway pressure air pressure sum；Here embodiment party
In formula, when anesthetic machine or respirator are just started shooting, ambient pressure sensor is used for testing external atmospheric pressure, in anesthetic machine or exhale
In suction machine work process, ambient pressure sensor is used for measuring atmospheric pressure and airway pressure air pressure sum.
The air pressure sum obtaining in step C is the gas being recorded by ambient pressure sensor with the difference of described atmospheric pressure
Road pressure, the difference of the airway pressure that the airway pressure that described ambient pressure sensor records is recorded with airway pressure sensor is little
In 2cmH2O, the difference of this 2cmH2O is only the weight of air bag, above-mentioned 2cmH2O be 2cm water column it can be seen that, using ambient pressure
The air flue barometric error of sensor measurement is less it is possible to use environment pressure transducer measures the pressure in air flue；Meanwhile,
Range due to ambient pressure sensor is more than airway pressure, and therefore its certainty of measurement can reduce, but the airway pressure of measurement
The precision of power is not less than 1cmH2O, and this 1cmH2O is 1cm water column it is seen that measuring the precision in air flue using ambient pressure sensor
Enough, when airway pressure sensor failure, ambient pressure sensor can play the effect of detection airway pressure, even if
During airway pressure sensor failure, anesthetic machine still can normally run.
Ambient pressure sensor and air flue pressure transducer can be single by processing by the data transfer measuring to control unit
Unit is analyzed to data, then judges ambient pressure sensor and airway pressure by state processing unit according to the data after analysis
Whether force transducer breaks down, if breaking down, sends corresponding alarm signal by alarm unit, ambient pressure sensor and
Airway pressure sensor correspond to different alarm signals, thus when both break down, is clear which is
Sensor there occurs fault, enhances the safety of anesthetic machine simultaneously, and above-described alarm signal includes signal lighties or warning
Sound, alarm signal is signal lighties and alarm sound exists simultaneously in this embodiment, can further improve anesthetic machine
Safety and stability.
Describe the know-why of the present invention above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed to by any way.Based on explanation herein, the technology of this area
Personnel do not need to pay other specific embodiments that performing creative labour can associate the present invention, and these modes fall within
Within protection scope of the present invention.
Claims (10)
1. a kind of anesthetic machine, including breathing circuit, sensor, described breathing circuit includes inspiration limb, described inspiration limb
One end connects driving gas by inlet valve, and the other end is connected with the suction end of patient；Expiration branch road, the one of described expiration branch road
End is connected with the expiration end of patient, and the other end is connected to air by PEEP valve it is characterised in that described sensor includes arranging
Ambient pressure sensor in breathing circuit, and it is arranged on the airway pressure sensor of described suction end；
Described anesthetic machine also includes control unit, processing unit and condition adjudgement unit；
Described processing unit is connected with described ambient pressure sensor and air flue pressure transducer, receives sensor data measured,
And this data is processed；
Described condition adjudgement unit is connected with described processing unit, and judges that ambient pressure passes according to the data of processing unit processes
Sensor or airway pressure sensor whether normal work；
Described condition adjudgement unit is also connected with control unit, and it will determine that result feeds back to control unit；
Described control unit is connected with described ambient pressure sensor and air flue pressure transducer, controls described ambient pressure sensing
Device and the work of air flue pressure transducer, control unit controls described ambient pressure sensor measurement atmospheric pressure and/or air
Airway pressure in the air pressure sum of pressure and airway pressure and the described airway pressure force sensor measuring air flue of control；Described biography
Sensor by the data transfer measuring to processing unit, described processing unit to described airway pressure with described air pressure sum with big
The difference of atmospheric pressure compares, condition adjudgement unit according to the analysis result of processing unit judge described ambient pressure sensor and/
Or airway pressure sensor whether normal work, and when condition adjudgement unit judges airway pressure sensor failure,
Control unit controls described ambient pressure sensor intra-airway pressure to be measured it is ensured that anesthetic machine normally runs.
2. anesthetic machine according to claim 1 is it is characterised in that described ambient pressure sensor is arranged on described air-breathing props up
Lu Shang, and it is located at the rear portion of inlet valve or the position being arranged on airway pressure sensor.
3. anesthetic machine according to claim 1 is it is characterised in that described ambient pressure sensor is arranged on electronic flowmeter
Rear end.
4. anesthetic machine according to claim 1 is it is characterised in that described anesthetic machine also includes alarm unit, this warning list
Unit is connected with control unit, when ambient pressure sensor or airway pressure sensor produce fault and send alarm signal.
5. anesthetic machine according to claim 4 is it is characterised in that described ambient pressure sensor and air flue pressure transducer
The different alarm signal of malfunction correspondence.
6. the anesthesia machine control method as described in a kind of any one as claim 1 to 5 is it is characterised in that comprise the following steps：
Step A：Control unit controls described ambient pressure sensor to measure atmospheric pressure and/or atmospheric pressure and airway pressure
Airway pressure in air pressure sum and the described airway pressure force sensor measuring air flue of control；
Step B：, by the data transfer measuring to processing unit, described processing unit is same to described airway pressure for described sensor
Described air pressure sum is compared with the difference of atmospheric pressure；
Step C：Condition adjudgement unit judges described ambient pressure sensor and/or airway pressure according to the analysis result of processing unit
Force transducer whether normal work；
Step D：Result of determination is fed back to control unit by condition adjudgement unit, if airway pressure sensor failure, control unit
Control ambient pressure sensor measurement intra-airway pressure it is ensured that anesthetic machine normally runs, if airway pressure normal operation of sensor
Repeat the above steps.
7. method according to claim 6 is it is characterised in that the described air pressure sum obtaining in stepb is big with described
The difference of atmospheric pressure is the airway pressure being recorded by ambient pressure sensor.
8. method according to claim 6 it is characterised in that in step D, if ambient pressure sensor and/or air flue
When pressure transducer breaks down, control unit controls alarm unit signal an alert.
9. method according to claim 8 is it is characterised in that described alarm signal includes signal lighties or alarm sound.
10. method according to claim 6 it is characterised in that in step, can normally survey by ambient pressure sensor
Amount atmospheric pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210580034.3A CN103893874B (en) | 2012-12-27 | 2012-12-27 | Anesthesia machine and method for allowing anesthesia machine to operate normally when airway pressure sensor of anesthesia machine fails |
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| CN201210580034.3A CN103893874B (en) | 2012-12-27 | 2012-12-27 | Anesthesia machine and method for allowing anesthesia machine to operate normally when airway pressure sensor of anesthesia machine fails |
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| CN103893874B true CN103893874B (en) | 2017-02-15 |
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| CN110433367A (en) * | 2019-08-19 | 2019-11-12 | 深圳市诺然美泰科技股份有限公司 | The dual monitoring device of Anesthesia machine airway pressure and method |
| CN112763130B (en) * | 2020-12-07 | 2022-06-24 | 中国船舶重工集团公司第七一六研究所 | Infusion pressure detection device and method of handheld oral anesthesia boosting instrument |
| CN116492556B (en) * | 2023-05-19 | 2023-12-22 | 深圳市龙岗区妇幼保健院 | Intelligent control method and system based on anesthesia machine |
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