CN105708433B - Means of defence and device applied to non-invasive blood pressure measuring system - Google Patents
Means of defence and device applied to non-invasive blood pressure measuring system Download PDFInfo
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- CN105708433B CN105708433B CN201610035454.1A CN201610035454A CN105708433B CN 105708433 B CN105708433 B CN 105708433B CN 201610035454 A CN201610035454 A CN 201610035454A CN 105708433 B CN105708433 B CN 105708433B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02233—Occluders specially adapted therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0266—Operational features for monitoring or limiting apparatus function
- A61B2560/0276—Determining malfunction
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Abstract
The invention discloses a kind of means of defences and device applied to non-invasive blood pressure measuring system, wherein above-mentioned means of defence includes：The pressure value of the first position and the second position of detection non-invasive blood pressure measuring system respectively, obtains the first cuff pressure value and the second cuff pressure value, wherein the first position and the second position are two different locations in same gas circuit；The absolute value for calculating the difference of the first cuff pressure value and the second cuff pressure value, obtains pressure difference；It is compared using the pressure difference as detected value with preset threshold pressure difference；If the detected value is more than the threshold pressure difference, the current blood pressure measurement task of the non-invasive blood pressure measuring system is terminated.Technical solution provided by the invention can effectively improve the safety of non-invasive blood pressure measuring system.
Description
Technical field
The present invention relates to processing of biomedical signals fields, and in particular to a kind of applied to the anti-of non-invasive blood pressure measuring system
Maintaining method and device.
Background technology
Blood pressure is the pressure generated to vascular wall when blood flows in the blood vessels, the physiological parameter important as human body, blood
Pressure energy enough reflects the function status of human heart and blood vessel, thus becomes and clinically diagnose the illness, observe therapeutic effect, carry out
The important evidence of Index for diagnosis etc..The measurement of blood pressure can realize that direct method is invasive blood by directly or indirectly two methods
Measurement method is pressed, it is intravascular by the way that conduit is inserted people, pressure value is obtained by pressure sensor；Indirect method is non-invasive blood pressure measurement side
Method obtains pressure value by carrying out analyzing processing to relevant characteristic signal.
The measurement that non-invasive blood pressure measuring method carries out blood pressure is mostly used at present, however, non-invasive blood pressure measuring method is by giving
Cuff inflation pressurization is to interruption artery blood flow, can do harm to huamn body if the pressure control in cuff is improper.So state
There are detailed standard, such as ANSI/AAMI for the safety of blood pressure measuring function and the design of validity and evaluation on border
SP10:2002 standards and IEC 80601-2-30 (Edition1.0 2009-01) standard, the two standards are especially to safety
Propose requirement.Below be IEC 80601-2-30 (Edition1.02009-01) standard in safety requirement：
One, during normal use, under newborn's pattern, the maximum pressure value that non-invasive blood pressure measures may not exceed
150mmHg (i.e. millimetres of mercury)；Under other patterns, the maximum pressure value that non-invasive blood pressure measures may not exceed 300mmHg；
Two, under the conditions of single failure：
A, pressure value be more than maximum pressure value+10% range (pressure value is more than 165mmHg i.e. under newborn's pattern,
Pressure value is more than 330mmHg under its pattern) time no more than 3 seconds；
B, pressure value is more than maximum pressure value but the no more than 15 seconds time in+10% range of maximum pressure value.
The requirement of standard and existing processing scheme be all according to single failure (i.e. in non-invasive blood pressure measurement process by
Failure caused by individual devices break down either due to single) in the case of, the feelings such as pressure superelevation, time-out have occurred
After condition, carries out overvoltage protection and such as close pump, open the measures such as valve.But pressure superelevation and time-out have given quilt during this time
It measures user and causes injury, the measure of overvoltage protection can only reduce the extent of injury to being measured user, can not avoid injuring.
Invention content
The present invention provides a kind of means of defence and device applied to non-invasive blood pressure measuring system, for improving non-invasive blood pressure
The safety of measuring system.
One aspect of the present invention provides a kind of means of defence applied to non-invasive blood pressure measuring system, including：
The pressure value of the first position and the second position of detection non-invasive blood pressure measuring system respectively, obtains the first cuff pressure
Value and the second cuff pressure value, wherein above-mentioned first position and said second position are two different locations in same gas circuit；
The absolute value for calculating the difference of above-mentioned first cuff pressure value and above-mentioned second cuff pressure value, obtains pressure difference；
It is compared using above-mentioned pressure difference as detected value with preset threshold pressure difference；
If above-mentioned detected value is more than above-mentioned threshold pressure difference, terminates the current blood pressure of above-mentioned non-invasive blood pressure measuring system and survey
Amount task.
Another aspect of the present invention provides a kind of protective device applied to non-invasive blood pressure measuring system, including：
First detection unit, the pressure value of the first position for detecting non-invasive blood pressure measuring system, obtains the first cuff
Pressure value；
Second detection unit, the pressure value of the second position for detecting above-mentioned non-invasive blood pressure measuring system, obtains second
Cuff pressure value；
First computing unit, for calculate above-mentioned first cuff pressure value and above-mentioned second cuff pressure value difference it is exhausted
To value, pressure difference is obtained；
Comparing unit, for being compared using above-mentioned pressure difference as detected value with preset threshold pressure difference；
Control unit, for when above-mentioned comparing unit compares above-mentioned detected value more than above-mentioned threshold pressure difference, terminating
The current blood pressure measurement task of above-mentioned non-invasive blood pressure measuring system；
Wherein, above-mentioned first position and said second position are two different locations in same gas circuit.
Therefore it is detected in the present invention and calculates two different locations in the same gas circuit of non-invasive blood pressure measuring system
Pressure difference takes safeguard protection to arrange when pressure difference reaches a certain level (when being more than preset threshold pressure difference)
It applies and (terminates the current blood pressure measurement task of the non-invasive blood pressure measuring system) so that caused due to device or gas circuit etc.
Failure can early be found, the generation of harm is avoided from source, and then improve non-invasive blood pressure measuring system
Safety.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is that a kind of means of defence one embodiment flow applied to non-invasive blood pressure measuring system provided by the invention is shown
It is intended to；
Fig. 2 is a kind of another embodiment flow of means of defence applied to non-invasive blood pressure measuring system provided by the invention
Schematic diagram；
Fig. 3 is that a kind of protective device one embodiment structure applied to non-invasive blood pressure measuring system provided by the invention is shown
It is intended to；
Fig. 4 is a kind of non-invasive blood pressure measuring system one embodiment structural schematic diagram provided by the invention.
Specific implementation mode
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described reality
It is only a part of the embodiment of the present invention to apply example, and not all embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment one
The embodiment of the present invention provides a kind of means of defence applied to non-invasive blood pressure measuring system, which measures system
System refer to using non-invasive blood pressure measuring method (such as Korotkoff's Sound stethoscopy and oscillographic method etc. blocked using cuff inflation pressurization it is dynamic
The blood pressure measuring method of arteries and veins blood flow) measure blood pressure blood pressure measuring system.Referring to Fig. 1, the protection side in the embodiment of the present invention
Method, including：
The pressure value of step 101, the respectively first position and the second position of detection non-invasive blood pressure measuring system, obtains first
Cuff pressure value and the second cuff pressure value；
Wherein, above-mentioned first position and said second position are two different locations in same gas circuit, that is, above-mentioned survey
The the first cuff pressure value and the second cuff pressure value obtained is two different positions in the same cuff of non-invasive blood pressure measuring system
The pressure value set.
The pressure value of above-mentioned first position and the second position can be detected in the embodiment of the present invention by pressure sensor, specifically
Two pressure sensors can be individually positioned in above-mentioned first position and said second position is detected by ground.In general, exist
When pressure is in static, above-mentioned first cuff pressure value and above-mentioned second cuff pressure value are equal, and at pressure
When dynamic (having air-flow variation), above-mentioned first cuff pressure value and above-mentioned second cuff pressure value may not
Together.
The embodiment of the present invention can detect above-mentioned first position and above-mentioned in real time when non-invasive blood pressure measuring system enables
The pressure value of two positions a, alternatively, time interval can also be preset, when non-invasive blood pressure measuring system enables, every the time
Interval is detected the pressure value of above-mentioned first position and said second position, is not construed as limiting herein.
The absolute value of the difference of step 102, the above-mentioned first cuff pressure value of calculating and above-mentioned second cuff pressure value, obtains
Pressure difference；
For example, setting current procedures 101 detects above-mentioned first cuff pressure value and above-mentioned second cuff pressure value
Difference is respectively A1 and B1, then calculates the absolute value of the difference of A1 and B1, obtains pressure difference and is：|A1-B1|.
Step 103 is compared using above-mentioned pressure difference as detected value with preset threshold pressure difference；
In the embodiment of the present invention, pressure difference and preset threshold pressure difference that step 102 is calculated every time compare
Compared with whether the pressure difference being calculated with this determination step 102 is more than the threshold pressure difference.
Since when non-invasive blood pressure measuring system is in different conditions, the pace of change of air pressure and air-flow may not
Together, therefore, corresponding threshold pressure difference is set for non-invasive blood pressure measuring system state in which, can more accurately identified
Failure.Optionally, it is that the various states of non-invasive blood pressure measuring system (such as standby mode, measure inflated condition, deflate in measurement
State and be measured deflation status) the corresponding threshold pressure difference of setting so that each state of non-invasive blood pressure measuring system point
It Dui Ying not a threshold pressure difference.Such as：When non-invasive blood pressure measuring system is in standby, due to measuring valve and peace at this time
For full valve all in open state, system air pressure should be suitable with atmospheric pressure, and without any action, and therefore, threshold pressure difference can be with
Smaller value is set, such as is set as 3mmHg；When non-invasive blood pressure measuring system, which is in, measures inflated condition, due to system gas at this time
It is pressed in quick variation, therefore higher value, such as 15mmHg can be arranged in threshold pressure difference；It is measured when non-invasive blood pressure measuring system is in
When middle deflation status, where there is two kinds of situations, and one is linear deflation, system air pressure change is slower, and threshold pressure difference can be set
It is set to 8mmHg, another step is deflated, and system gas is pressed in that plateau variation is smaller, and threshold pressure difference may be configured as 5mmHg,
Further, can also by the change of deflation status, come identify non-invasive blood pressure measuring system whether quickly putting between step
The gas stage, since the phase duration is very short, can be suspended if being in the Rapid degassing stage and compare (i.e. pause execution
Step 103) after waiting for the Rapid degassing stage, reenters the step platform phase, then re-executes step 103, avoid step platform
Huge pressure fluctuations pressure comparison result when transition.On this basis, step 103 specifically includes：It determines current noninvasive
Blood pressure measuring system state in which；Obtain pressure corresponding with the non-invasive blood pressure measuring system state in which currently determined
Poor threshold value；The pressure difference that step 102 is calculated is compared as detected value with the above-mentioned threshold pressure difference currently obtained.
It should be noted that above-mentioned with deflation status and survey in the standby mode of non-invasive blood pressure measuring system, measurement inflated condition, measurement
Amount is completed to illustrate for four kinds of states of deflation status, non-invasive blood pressure measuring system other states (such as non-measured
Pressure gauge pattern, gas leakage detection pattern when state etc. also can there are inflation, deflate etc. states) can refer to foregoing description carry out
The adjustment of threshold pressure difference.
Optionally, according to measurement procedure, (for example, after being inflated to goal pressure, multiple step is deflated, and is entered after being measured
Standby mode) and current system pressure, determine non-invasive blood pressure measuring system state in which.Alternatively, can also be become by air pressure
The speed of change determines non-invasive blood pressure measuring system state in which, is not construed as limiting herein.
If step 104, above-mentioned detected value are more than above-mentioned threshold pressure difference, it is current to terminate above-mentioned non-invasive blood pressure measuring system
Blood pressure measurement task；
In present example, when comparing above-mentioned detected value more than above-mentioned threshold pressure difference, safety precautions is taken,
Terminate the current blood pressure measurement task of above-mentioned non-invasive blood pressure measuring system.
Specifically, the action of the current blood pressure measurement task of the above-mentioned non-invasive blood pressure measuring system of above-mentioned termination includes：It closes
The air pump of above-mentioned non-invasive blood pressure measuring system, and open the measurement valve and/or safety valve of above-mentioned non-invasive blood pressure measuring system；Or
Person can also only include the air pump for closing above-mentioned non-invasive blood pressure measuring system；It is surveyed alternatively, above-mentioned non-invasive blood pressure can also be opened only
The measurement valve and/or safety valve of amount system, are not construed as limiting herein.
Further, when compare above-mentioned detected value more than above-mentioned threshold pressure difference when, can with output abnormality alarm signal,
So that staff (such as medical staff) can pinpoint the problems in time.
Further, it if above-mentioned detected value is not more than above-mentioned threshold pressure difference, returns immediately or after waiting for preset duration
Execute step 101.
Therefore it is detected in the present invention and calculates two different locations in the same gas circuit of non-invasive blood pressure measuring system
Pressure difference takes safeguard protection to arrange when pressure difference reaches a certain level (when being more than preset threshold pressure difference)
It applies and (terminates the current blood pressure measurement task of the non-invasive blood pressure measuring system) so that caused due to device or gas circuit etc.
Failure can early be found, the generation of harm is avoided from source, and then improve non-invasive blood pressure measuring system
Safety.
Embodiment two
In order to avoid abnormal pressure fluctuation (such as the movement or shake of user's body make pressure measurement fluctuate) causes
Erroneous judgement, the pressure difference of a single point is replaced by calculating the average value of multiple pressure difference in the embodiment of the present invention, below to this
The means of defence that the another kind that inventive embodiments provide is applied to non-invasive blood pressure measuring system illustrates, likewise, this is noninvasive
Blood pressure measuring system refer to using non-invasive blood pressure measuring method (such as Korotkoff's Sound stethoscopy and oscillographic method etc. utilize cuff inflation
Pressurize interruption artery blood flow blood pressure measuring method) measure blood pressure blood pressure measuring system.Referring to Fig. 2, the embodiment of the present invention
In means of defence, including：
The pressure value of step 201, the respectively first position and the second position of detection non-invasive blood pressure measuring system, obtains first
Cuff pressure value and the second cuff pressure value；
Wherein, above-mentioned first position and said second position are two different locations in same gas circuit, that is, above-mentioned survey
The the first cuff pressure value and the second cuff pressure value obtained is two different positions in the same cuff of non-invasive blood pressure measuring system
The pressure value set.
The pressure value of above-mentioned first position and the second position can be detected in the embodiment of the present invention by pressure sensor, specifically
Two pressure sensors can be individually positioned in above-mentioned first position and said second position is detected by ground.In general, exist
When pressure is in static, above-mentioned first cuff pressure value and above-mentioned second cuff pressure value are equal, and at pressure
When dynamic (having air-flow variation), above-mentioned first cuff pressure value and above-mentioned second cuff pressure value may not
Together.
The embodiment of the present invention can detect above-mentioned first position and above-mentioned in real time when non-invasive blood pressure measuring system enables
The pressure value of two positions a, alternatively, time interval can also be preset, when non-invasive blood pressure measuring system enables, every the time
Interval is detected the pressure value of above-mentioned first position and said second position, is not construed as limiting herein.
The absolute value of the difference of step 202, the above-mentioned first cuff pressure value of calculating and above-mentioned second cuff pressure value, obtains
Pressure difference；
For example, setting current procedures 201 detects above-mentioned first cuff pressure value and above-mentioned second cuff pressure value
Difference is respectively A1 and A2, then calculates the absolute value of the difference of A1 and A2, obtains pressure difference and is：|A1-A2|.
Step 203 averages the above-mentioned pressure difference that continuous n times are calculated, and obtains average differential pressure；
Wherein, above-mentioned N is for preset value and more than or equal to 2, and specifically, the value of N can be set according to actual needs
It is fixed, it is not construed as limiting herein.
For example, setting N takes 3, then step 201 detects above-mentioned first cuff pressure value and above-mentioned second sleeve continuous 3 times
Difference with pressure value is respectively that A1, A2, A3 and B1, B2, B3 then in step 203 continuous 3 times are calculated above-mentioned
Pressure difference is averaged, and is obtained average differential pressure and is：(|A1-B1|+|A2-B2|+|A3-B3|)/3.
Step 204 is compared using above-mentioned average differential pressure as detected value with preset threshold pressure difference；
In the embodiment of the present invention, pressure difference and preset threshold pressure difference that step 203 is calculated every time compare
Compared with whether the pressure difference being calculated with this determination step 203 is more than the threshold pressure difference.
Since when non-invasive blood pressure measuring system is in different conditions, the pace of change of air pressure and air-flow may not
Together, therefore, corresponding threshold pressure difference is set for non-invasive blood pressure measuring system state in which, can more accurately identified
Failure.Optionally, it is that the various states of non-invasive blood pressure measuring system (such as standby mode, measure inflated condition, deflate in measurement
State and be measured deflation status) the corresponding threshold pressure difference of setting so that each state of non-invasive blood pressure measuring system point
It Dui Ying not a threshold pressure difference.Such as：When non-invasive blood pressure measuring system is in standby, due to measuring valve and peace at this time
For full valve all in open state, system air pressure should be suitable with atmospheric pressure, and without any action, and therefore, threshold pressure difference can be with
Smaller value is set, such as is set as 3mmHg；When non-invasive blood pressure measuring system, which is in, measures inflated condition, due to system gas at this time
It is pressed in quick variation, therefore higher value, such as 15mmHg can be arranged in threshold pressure difference；It is measured when non-invasive blood pressure measuring system is in
When middle deflation status, where there is two kinds of situations, and one is linear deflation, system air pressure change is slower, and threshold pressure difference can be set
It is set to 8mmHg, another step is deflated, and system gas is pressed in that plateau variation is smaller, and threshold pressure difference may be configured as 5mmHg,
Further, can also by the change of deflation status, come identify non-invasive blood pressure measuring system whether quickly putting between step
The gas stage, if can suspend and compare, wait for Rapid degassing since the phase duration is very short in the Rapid degassing stage
After the stage, the step platform phase is reentered, then re-starts and compares, huge pressure oscillation shadow when avoiding step platform transition
Ring pressure comparison result.On this basis, step 204 specifically includes：Determine current noninvasive blood pressure measuring system state in which；
Obtain threshold pressure difference corresponding with the non-invasive blood pressure measuring system state in which currently determined；Step 204 is calculated
To average differential pressure be compared with the above-mentioned threshold pressure difference currently obtained as detected value.It should be noted that above-mentioned
With the standby mode of non-invasive blood pressure measuring system, measures deflation status in inflated condition, measurement and be measured deflation status four
It is illustrated for kind of state, in other states (such as pressure gauge mould in non-measured state of non-invasive blood pressure measuring system
Formula, gas leakage detection pattern etc. also can there are inflation, deflate etc. states) can refer to foregoing description carry out threshold pressure difference tune
It is whole.
Optionally, according to measurement procedure, (for example, after being inflated to goal pressure, multiple step is deflated, and is entered after being measured
Standby mode) and current system pressure, determine non-invasive blood pressure measuring system state in which.Alternatively, can also be become by air pressure
The speed of change determines non-invasive blood pressure measuring system state in which, is not construed as limiting herein.
If step 205, above-mentioned detected value are more than above-mentioned threshold pressure difference, it is current to terminate above-mentioned non-invasive blood pressure measuring system
Blood pressure measurement task；
In present example, when comparing above-mentioned detected value more than above-mentioned threshold pressure difference, safety precautions is taken,
Terminate the current blood pressure measurement task of above-mentioned non-invasive blood pressure measuring system.
Specifically, the action of the current blood pressure measurement task of the above-mentioned non-invasive blood pressure measuring system of above-mentioned termination includes：It closes
The air pump of above-mentioned non-invasive blood pressure measuring system, and open the measurement valve and/or safety valve of above-mentioned non-invasive blood pressure measuring system；Or
Person can also only include the air pump for closing above-mentioned non-invasive blood pressure measuring system；It is surveyed alternatively, above-mentioned non-invasive blood pressure can also be opened only
The measurement valve and/or safety valve of amount system, are not construed as limiting herein.
Further, when compare above-mentioned detected value more than above-mentioned threshold pressure difference when, can with output abnormality alarm signal,
So that staff (such as medical staff) can pinpoint the problems in time.
Further, it if above-mentioned detected value is not more than above-mentioned threshold pressure difference, returns immediately or after waiting for preset duration
Execute step 201.
Therefore it is detected in the present invention and calculates two different locations in the same gas circuit of non-invasive blood pressure measuring system
Pressure difference takes safeguard protection to arrange when pressure difference reaches a certain level (when being more than preset threshold pressure difference)
It applies and (terminates the current blood pressure measurement task of the non-invasive blood pressure measuring system) so that caused due to device or gas circuit etc.
Failure can early be found, the generation of harm is avoided from source, and then improve non-invasive blood pressure measuring system
Safety.
Embodiment three
The embodiment of the present invention provides a kind of protective device applied to non-invasive blood pressure measuring system, which measures system
System refer to using non-invasive blood pressure measuring method (such as Korotkoff's Sound stethoscopy and oscillographic method etc. blocked using cuff inflation pressurization it is dynamic
The blood pressure measuring method of arteries and veins blood flow) measure blood pressure blood pressure measuring system.Referring to Fig. 3, the protection dress in the embodiment of the present invention
It sets, including：
First detection unit 301, the pressure value of the first position for detecting non-invasive blood pressure measuring system, obtains the first sleeve
Band pressure value；
Second detection unit 302, the pressure value of the second position for detecting above-mentioned non-invasive blood pressure measuring system obtain
Two cuff pressure values；
First computing unit 303, the difference for calculating above-mentioned first cuff pressure value and above-mentioned second cuff pressure value
Absolute value, obtain pressure difference；
Comparing unit 304, for being compared using above-mentioned pressure difference as detected value with preset threshold pressure difference；
Control unit 305, for when comparing unit 304 compare above-mentioned detected value more than above-mentioned threshold pressure difference when, eventually
The only current blood pressure measurement task of above-mentioned non-invasive blood pressure measuring system；
Wherein, above-mentioned first position and said second position are two different locations in same gas circuit, that is, above-mentioned survey
The the first cuff pressure value and the second cuff pressure value obtained is two different positions in the same cuff of non-invasive blood pressure measuring system
The pressure value set.
Optionally, the protective device in the embodiment of the present invention further includes：Second computing unit, for being calculated above-mentioned first
The above-mentioned pressure difference that the continuous n times of unit are calculated is averaged, and average differential pressure is obtained, wherein N be preset value and be more than or
Equal to 2；Comparing unit 304 is specifically used for：Compare above-mentioned average differential pressure as detected value and preset threshold pressure difference
Compared with.
Optionally, above-mentioned non-invasive blood pressure measuring system includes following four kinds of states：Standby mode measures inflated condition, surveys
Deflation status corresponds to four threshold pressure differences respectively with deflation status, above-mentioned four kinds of states is measured in amount；Comparing unit 304
Further include：Determination unit, for determining current above-mentioned non-invasive blood pressure measuring system state in which；Acquiring unit, for obtaining
Threshold pressure difference corresponding with the above-mentioned non-invasive blood pressure measuring system state in which that current above-mentioned determination unit determines；Son is relatively
Unit, for above-mentioned pressure difference to be compared as detected value with the above-mentioned threshold pressure difference currently obtained.
Optionally, control unit 305 is specifically used for：It is more than above-mentioned pressure when comparing unit 304 compares above-mentioned detected value
When poor threshold value, close the air pump of above-mentioned non-invasive blood pressure measuring system, and open above-mentioned non-invasive blood pressure measuring system measurement valve and/
Or safety valve.
Optionally, the protective device in the embodiment of the present invention further includes：Alarm output unit, for working as comparing unit 304
When comparing above-mentioned detected value more than above-mentioned threshold pressure difference, output abnormality alarm signal.
It should be noted that the protective device in the embodiment of the present invention can specifically be integrated in above-mentioned non-invasive blood pressure measuring system
Host in, which can be used to implement whole technical solutions in above-described embodiment one or embodiment two, each
The function of function module can be implemented according to the method in above-described embodiment one or embodiment two, and specific implementation process can
With reference to the associated description in above-described embodiment, details are not described herein again.
Therefore it is detected in the present invention and calculates two different locations in the same gas circuit of non-invasive blood pressure measuring system
Pressure difference takes safeguard protection to arrange when pressure difference reaches a certain level (when being more than preset threshold pressure difference)
It applies and (terminates the current blood pressure measurement task of the non-invasive blood pressure measuring system) so that caused due to device or gas circuit etc.
Failure can early be found, the generation of harm is avoided from source, and then improve non-invasive blood pressure measuring system
Safety.
Example IV
A kind of non-invasive blood pressure of means of defence shown in Application Example one or embodiment two is measured in the embodiment of the present invention
The structure of system is described, as shown in figure 4, the non-invasive blood pressure measuring system includes：
Blood pressure gas circuit and cuff 401, main measuring circuit 402, safety protective circuit 403 and pump valve control circuit 404.Its
In：
Main measuring circuit 402 includes：Primary pressure sensor circuit 4021 and main microprocessor circuit 4022.
Primary pressure sensor circuit 4021 acquires the pressure signal of blood pressure gas circuit and cuff 401, is input to main microprocessor
Circuit 4022.
Main microprocessor circuit 4022 is mainly used for：The pressure signal inputted to primary pressure sensor circuit 4021 is adopted
Sample and calculating (such as calculating systolic pressure, diastolic pressure, mean pressure, pulse frequency and other results)；By pump valve control circuit 404 to gas
The startup of pump and valve (such as measuring valve and/or safety valve), closing, inflation, deflation speed are controlled.Further, main micro- place
Managing device circuit 4022 further includes：Pressure comparison unit (not shown), the pressure for calculating two different positions in same gas circuit
Force difference (or average differential pressure) determines whether to execute by comparing pressure difference (or average differential pressure) and the size of threshold pressure difference
Safety precautions (such as terminate the current blood pressure measurement task of the non-invasive blood pressure measuring system, output abnormality alarm signal
Deng).
Safety protective circuit 403 includes：Auxiliary pressure sensor circuit 4031 and support microprocessor circuit 4032.Auxiliary
Pressure sensor circuit 4031 acquires the pressure signal of blood pressure gas circuit and cuff 401, is input to support microprocessor circuit 4031.
Support microprocessor circuit 4032 is mainly used for：To auxiliary pressure sensor circuit 4031 input pressure signal into
Row sampling generates the control signal execution safety precautions of pump valve by detecting pressure change and reduced pressure difference, and
The power supply signal of air pump and valve (such as safety valve and/or measurement valve) can be monitored.Further, support microprocessor circuit 4032
Further include：Pressure comparison unit (not shown), pressure difference (or the mean pressure for calculating in same gas circuit two different positions
Force difference), determine whether to execute safety precautions by comparing the size of pressure difference (or average differential pressure) and threshold pressure difference
(such as terminate the current blood pressure measurement task of the non-invasive blood pressure measuring system, output abnormality alarm signal etc.).
It should be noted that above-mentioned pressure comparison unit can be both arranged in main microprocessor circuit 4022, it can also
It is arranged in support microprocessor circuit 4032, in embodiments of the present invention, in main microprocessor circuit 4022 and assists micro- place
It is both provided with above-mentioned pressure comparison unit in reason device circuit 4032, in this way, when wherein processor circuit breaks down all the way
It waits, can also work normally.It is of course also possible to by the setting of above-mentioned pressure comparison unit except main microprocessor circuit 4022 and auxiliary
The place other than microprocessor circuit 4032 is helped, is not construed as limiting herein.
Pump valve control circuit 404 is mainly used for：Receive main microprocessor circuit 4022 and support microprocessor circuit 4032
Control signal, switch control is carried out to air pump and valve (such as measuring valve and/or safety valve).
It should be noted that in several embodiments provided herein, it should be understood that disclosed device and side
Method may be implemented in other ways.For example, the apparatus embodiments described above are merely exemplary, for example, above-mentioned
The division of unit, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units
Or component can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, institute
Display or the mutual coupling, direct-coupling or communication connection discussed can be by some interfaces, device or unit
INDIRECT COUPLING or communication connection can be electrical, machinery or other forms.
It for each method embodiment above-mentioned, describes for simplicity, therefore is all expressed as a series of combination of actions, but
Be those skilled in the art should understand that, the present invention is not limited by the described action sequence because according to the present invention, certain
A little steps may be used other sequences or be carried out at the same time.Secondly, it those skilled in the art should also know that, is retouched in specification
The embodiment stated belongs to preferred embodiment, and involved action and module might not all be necessary to the present invention.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiments.
It is to provided by the present invention a kind of applied to the means of defence of non-invasive blood pressure measuring system and retouching for device above
It states, for those of ordinary skill in the art, the thought of embodiment according to the present invention, in specific embodiments and applications
There will be changes, to sum up, the content of the present specification should not be construed as limiting the invention.
Claims (10)
1. a kind of means of defence applied to non-invasive blood pressure measuring system, which is characterized in that including：
Respectively detection non-invasive blood pressure measuring system first position and the second position pressure value, obtain the first cuff pressure value and
Second cuff pressure value, wherein the first position and the second position are two different locations in same gas circuit；
The absolute value for calculating the difference of the first cuff pressure value and the second cuff pressure value, obtains pressure difference；
It is compared using the pressure difference as detected value with preset threshold pressure difference；
If the detected value is more than the threshold pressure difference, terminates the current blood pressure measurement of the non-invasive blood pressure measuring system and appoint
Business.
2. according to the method described in claim 1, it is characterized in that,
It is described obtain further include after pressure difference：The pressure difference that the detection of continuous n times is calculated is averaged, is put down
Equal pressure difference, wherein N is preset value and is greater than or equal to 2；
It is described to be compared specially using the pressure difference as detected value with preset threshold pressure difference：
It is compared using the average differential pressure as detected value with preset threshold pressure difference.
3. according to the method described in claim 1, it is characterized in that, the non-invasive blood pressure measuring system includes following four kinds of shapes
State：Standby mode measures deflation status in inflated condition, measurement and is measured deflation status, every in four kinds of states
Kind state corresponds to a threshold pressure difference respectively；
It is described to be compared using the pressure difference as detected value with preset threshold pressure difference, including：
Determine presently described non-invasive blood pressure measuring system state in which；
Obtain threshold pressure difference corresponding with the non-invasive blood pressure measuring system state in which currently determined；
The pressure difference is compared as detected value with the threshold pressure difference currently obtained.
4. method according to any one of claims 1 to 3, which is characterized in that described to terminate non-invasive blood pressure measurement system
The blood pressure measurement task for uniting current includes：The air pump of the non-invasive blood pressure measuring system is closed, and opens the non-invasive blood pressure and surveys
The measurement valve and/or safety valve of amount system.
5. method according to any one of claims 1 to 3, which is characterized in that if the detected value is more than the pressure difference
Threshold value, the method further include：
Output abnormality alarm signal.
6. a kind of protective device applied to non-invasive blood pressure measuring system, which is characterized in that including：
First detection unit, the pressure value of the first position for detecting non-invasive blood pressure measuring system, obtains the first cuff pressure
Value；
Second detection unit, the pressure value of the second position for detecting the non-invasive blood pressure measuring system, obtains the second cuff
Pressure value；
First computing unit, for calculate the first cuff pressure value and the second cuff pressure value difference it is absolute
Value, obtains pressure difference；
Comparing unit, for being compared using the pressure difference as detected value with preset threshold pressure difference；
Control unit, for when the comparing unit compares the detected value more than the threshold pressure difference, described in termination
The current blood pressure measurement task of non-invasive blood pressure measuring system；
Wherein, the first position and the second position are two different locations in same gas circuit.
7. protective device according to claim 6, which is characterized in that the protective device further includes：
Second computing unit, the pressure difference for the continuous n times detection of first computing unit to be calculated are averaging
Value, obtains average differential pressure, wherein N is preset value and is greater than or equal to 2；
The comparing unit is specifically used for：Compare the average differential pressure as detected value and preset threshold pressure difference
Compared with.
8. protective device according to claim 6, which is characterized in that the non-invasive blood pressure measuring system includes following four kinds
State：Standby mode measures deflation status in inflated condition, measurement and is measured deflation status, four kinds of states difference
Corresponding four threshold pressure differences；
The comparing unit further includes：
Determination unit, for determining presently described non-invasive blood pressure measuring system state in which；
Acquiring unit, for obtaining the non-invasive blood pressure measuring system state in which pair determined with presently described determination unit
The threshold pressure difference answered；
Sub- comparing unit, for the pressure difference to be compared as detected value with the threshold pressure difference currently obtained.
9. according to claim 6 to 8 any one of them protective device, which is characterized in that described control unit is specifically used for：When
When the comparing unit compares the detected value more than the threshold pressure difference, the gas of the non-invasive blood pressure measuring system is closed
Pump, and open the measurement valve and/or safety valve of the non-invasive blood pressure measuring system.
10. according to claim 6 to 8 any one of them protective device, which is characterized in that the protective device further includes：
Alarm output unit, for when the comparing unit compares the detected value more than the threshold pressure difference, exporting
Abnormal alarm signal.
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| CN201610035454.1A CN105708433B (en) | 2016-01-20 | 2016-01-20 | Means of defence and device applied to non-invasive blood pressure measuring system |
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| CN109758163B (en) * | 2018-11-14 | 2021-11-30 | 中国医学科学院生物医学工程研究所 | Noninvasive blood glucose detection system |
| CN110200611A (en) * | 2019-06-19 | 2019-09-06 | 健仕医疗技术(浙江)有限公司 | A kind of oscillographic method electronic sphygmomanometer and its measurement method |
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