CN106236020A - A kind of blood flow state detection equipment, system and method - Google Patents
A kind of blood flow state detection equipment, system and method Download PDFInfo
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- CN106236020A CN106236020A CN201610755682.6A CN201610755682A CN106236020A CN 106236020 A CN106236020 A CN 106236020A CN 201610755682 A CN201610755682 A CN 201610755682A CN 106236020 A CN106236020 A CN 106236020A
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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- A—HUMAN NECESSITIES
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- 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
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- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6832—Means for maintaining contact with the body using adhesives
- A61B5/6833—Adhesive patches
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- A—HUMAN NECESSITIES
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Abstract
The invention provides a kind of blood flow state detection equipment, system and method, this blood flow state detection equipment includes: alternating voltage offer portion, at least one pair of detecting electrode and test section, wherein, alternating voltage offer portion, including: at least one pair of alternating voltage port, every a pair alternating voltage port and a pair detecting electrode are connected, and being used for is a pair detecting electrode output alternating voltage；In at least one pair of detecting electrode, every a pair detecting electrode extremely comprises adhesion layer；Every a pair detecting electrode passes through adhesion layer, adheres to skin surface, for receiving the alternating voltage of alternating voltage offer portion output；Test section, for when alternating voltage offer portion provides alternating voltage at least one pair of detecting electrode, detects the impedance variation value in the loop that every a pair detecting electrode is formed, according to impedance variation value, determines blood flow state.The scheme that the present invention provides achieves detection thrombosis and leakage blood simultaneously.
Description
Technical field
The present invention relates to medical equipment technical field, particularly to a kind of blood flow state detection equipment, system and method.
Background technology
During carrying out medical surgery, doctor marks wound often through scalpel, so that treating that operative site uncovers
Come, facilitate medical personnel to be operated.And after the procedure is completed, doctor also needs to wound carries out the operations such as stitching,
To ensure that wound site blood flow is normal, gradually heal.So, in wound carries out agglutination, it is often necessary to the moment observes wound
Whether mouth has leakage blood or thrombosis situation to occur.
At present, the main generation light by launching fixed wave length in blood vessel, and receive the reflection light of return to detect blood
The situation of thrombosis in pipe, existing this thrombosis detection mode, can not detect leakage blood simultaneously.
Summary of the invention
Embodiments provide a kind of blood flow state detection equipment, system and method, it is achieved that detect thrombosis simultaneously
With leakage blood.
A kind of blood flow state detection equipment, including: alternating voltage offer portion, at least one pair of detecting electrode and test section, its
In,
Described alternating voltage offer portion, including: at least one pair of alternating voltage port, wherein, every a pair alternating voltage port
It is connected with a pair detecting electrode, for exporting alternating voltage for the pair of detecting electrode；
In at least one pair of detecting electrode described, every a pair detecting electrode extremely comprises adhesion layer；
Every a pair detecting electrode passes through described adhesion layer, adheres to skin surface, and being used for receiving described alternating voltage provides
The alternating voltage of portion's output；
Described test section, for providing alternating voltage when described alternating voltage offer portion at least one pair of detecting electrode described
Time, detect the impedance variation value in the loop that every a pair detecting electrode is formed, according to described impedance variation value, determine blood flow shape
State.
Preferably, described alternating voltage offer portion, including: transformator, wherein,
Described transformator, is connected with the electric power system of peripheral hardware, for receiving the first alternation of the electric power system input of peripheral hardware
Voltage, and described first alternating voltage is converted to the second alternating voltage；
Described every a pair detecting electrode, for receiving the second alternating voltage of described alternating voltage offer portion output.
Preferably, test section, including: amperometric, computation subunit and judgment sub-unit, wherein,
Described amperometric, for detecting the initial current that every a pair detecting electrode produces, and detects every a pair in real time
The running current of detecting electrode；
Described computation subunit, for the operation electricity of the initial current detected according to described amperometric and correspondence
Stream, utilizes following computing formula (1), calculates the impedance variation value in the loop that every a pair detecting electrode is formed；
Wherein,Characterize the jth impedance variation value between n-th pair of detecting electrode of amperometric detection；U characterizes friendship
The alternating voltage of time variant voltage offer portion output；In0Characterize the initial current of n-th pair of detecting electrode of amperometric detection；Inj
Jth running current value between n-th pair of detecting electrode of amperometric detection；
Described judgment sub-unit, for when described computation subunit calculated impedance variation value is less than zero, determining
Leakage blood；When described computation subunit calculated impedance variation value is more than zero, determine thrombosis；When described computation subunit meter
When the impedance variation value obtained is equal to zero, determine that blood flow is normal.
Preferably, described judgment sub-unit, it is used for arranging first threshold, Second Threshold and the 3rd threshold value, determines the least
The first number in the described computation subunit calculated impedance variation value of described first threshold, it is judged that described first number
Whether more than described 3rd threshold value, if it is, determine leakage blood；Determine continuously single more than described calculating of described Second Threshold
Second number of the calculated impedance variation value of unit, it is judged that described the and number whether more than described 3rd threshold value, if it is,
Then determine leakage blood.
Preferably, described test section, farther include: signal adapter and display, wherein,
Described signal adapter, for by calculated for described computation subunit impedance variation value, being converted into correspondence
The signal of telecommunication, and export the described signal of telecommunication to described display；
Described display, for receiving the signal of telecommunication of described signal adapter output, and exports telecommunications sequentially in time
Number, form display waveform.
Preferably, above-mentioned blood flow state detection equipment, it is applied to the detection of wound blood flow state；
Described every a pair detecting electrode adhesion locations is away from wound edge 0-10cm；
First detecting electrode adhesion locations and the line of the first detecting electrode adhesion locations in described every a pair detecting electrode
Through described wound.
Preferably, described test section is connected with the warning system of peripheral hardware,
When described test section determines that blood flow state is leakage blood, the warning system triggering described peripheral hardware is reported to the police；
And/or,
When described test section determines that blood flow state is thrombosis, the warning system triggering described peripheral hardware is reported to the police.
A kind of blood flow state detecting system, including: any of the above-described described blood flow state detection equipment, electric power system and report
Alarm system, wherein,
Described electric power system, for the first alternating voltage for the detection equipment input of described blood flow state；
Described warning system, for when receiving the triggering of described blood flow state detection equipment, reporting to the police.
A kind of blood flow state detection method, every a pair detecting electrode passes through adhesion layer, adheres to skin surface, also include:
Every a pair detecting electrode receives alternating voltage；
Detect the impedance variation value in the loop that every a pair detecting electrode is formed；
According to described impedance variation value, determine blood flow state.
Preferably, the impedance variation value in the loop that every a pair detecting electrode of described detection is formed, including: detect every a pair
The initial current that detecting electrode produces, and detect the running current of every a pair detecting electrode in real time；
According to the initial current detected and the running current of correspondence, utilize following computing formula (1), calculate every a pair inspection
Survey the impedance variation value in the loop that electrode is formed；
Wherein,Characterize the jth impedance variation value between n-th pair of detecting electrode of amperometric detection；U characterizes friendship
The alternating voltage of time variant voltage offer portion output；In0Characterize the initial current of n-th pair of detecting electrode of amperometric detection；Inj
Jth running current value between n-th pair of detecting electrode of amperometric detection.
Preferably, said method farther includes: arrange first threshold, Second Threshold and the 3rd threshold value；
Described determine blood flow state according to described impedance variation value, including:
When described impedance variation value is less than described first threshold, determine continuously less than the impedance variation of described first threshold
First number of value；
Judge whether described first number is more than described 3rd threshold value, if it is, determine leakage blood；
When described impedance variation value threshold value more than described the, determine continuously more than described Second Threshold impedance become
Second number of change value；
Judge described the and number whether more than described 3rd threshold value, if it is, determine leakage blood.
Embodiments providing a kind of blood flow state detection equipment, system and method, this blood flow state detects equipment,
It is connected with a pair corresponding detecting electrode by the every a pair alternating voltage port in alternating voltage offer portion, for corresponding a pair
Detecting electrode output alternating voltage；And every a pair detecting electrode extremely comprise adhesion layer, every a pair detecting electrode can pass through
Adhesion layer, adheres to skin surface, owing to human body is a conductor, then, when two electrodes adhere on human body, two electrodes
With human body between two electrodes constitutes Guan Bi circuit, then when a pair detecting electrode, to receive alternating voltage offer portion defeated
During the alternating voltage gone out, the human body that electric current will be had to be placed through between two electrodes, and the size of electric current is by two electrodes
Between human body in the impact of blood flow state (blood flow is normal, leakage blood and thrombosis), (blood flow is just for the most different blood flow states
Often, leakage blood and thrombosis) produce different resistance value for Guan Bi circuit, then, when alternating voltage offer portion be described at least one pair of
When detecting electrode provides alternating voltage, detect the impedance variation value in the loop that every a pair detecting electrode is formed by test section,
According to impedance variation value, determine blood flow state, it is achieved that detection thrombosis and leakage blood simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
These accompanying drawings obtain other accompanying drawing.
Fig. 1 is the structural representation of a kind of blood flow state detection equipment that one embodiment of the invention provides；
Fig. 2 is the structural representation of a kind of blood flow state detection equipment that another embodiment of the present invention provides；
Fig. 3 is the structural representation of a kind of blood flow state detection equipment that another embodiment of the present invention provides；
Fig. 4 is the schematic diagram of the blood flow state that a kind of display that one embodiment of the invention provides shows；
Fig. 5 is the structural representation of a kind of blood flow state detecting system that one embodiment of the invention provides；
Fig. 6 is the flow chart of a kind of blood flow state detection method that one embodiment of the invention provides；
Fig. 7 is the structural representation of a kind of blood flow state detecting system that another embodiment of the present invention provides；
Fig. 8 is the flow chart of a kind of blood flow state detection method that another embodiment of the present invention provides.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments, based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of not making creative work, broadly falls into the scope of protection of the invention.
As it is shown in figure 1, the embodiment of the present invention provides a kind of blood flow state detection equipment, this blood flow state detection equipment, bag
Include: alternating voltage offer portion 101, at least one pair of detecting electrode 102 and test section 103, wherein,
Described alternating voltage offer portion 101, including: at least one pair of alternating voltage port 1011, wherein, every a pair alternation electricity
Pressure side mouth 1011 is connected with a pair detecting electrode 102, for exporting alternating voltage for the pair of detecting electrode 102；
In at least one pair of detecting electrode 102 described, every a pair detecting electrode extremely comprises adhesion layer 1021；
Every a pair detecting electrode 102, by described adhesion layer 1021, adheres to skin surface, is used for receiving described alternation electricity
The alternating voltage of pressure offer portion 101 output；
Described test section 103, for when described alternating voltage offer portion 101 carries at least one pair of detecting electrode 102 described
During for alternating voltage, detect the impedance variation value in the loop that every a pair detecting electrode 102 is formed, according to described impedance variation
Value, determines blood flow state.
In the embodiment shown in fig. 1, by the every a pair alternating voltage port in alternating voltage offer portion with corresponding
A pair detecting electrode is connected, for a pair corresponding detecting electrode output alternating voltage；And extremely the comprising of every a pair detecting electrode
Adhesion layer, every a pair detecting electrode can pass through adhesion layer, adhere to skin surface, owing to human body is a conductor, then, when
Two electrodes adhere on human body, and the human body between two electrodes and two electrodes constitutes Guan Bi circuit, then when a pair
When detecting electrode receives the alternating voltage of alternating voltage offer portion output, the people that electric current will be had to be placed through between two electrodes
Body region, and the size of electric current is by the blood flow state (blood flow is normal, leak blood and thrombosis) in the human body between two electrodes
Impact, the most different blood flow state (blood flow is normal, leakage blood and thrombosis) produces different resistance values for Guan Bi circuit, then,
When alternating voltage offer portion provides alternating voltage at least one pair of detecting electrode described, detect every a pair detection by test section
Electrode formed loop in impedance variation value, according to impedance variation value, determine blood flow state, it is achieved that simultaneously detection thrombosis and
Leakage blood.
In an alternative embodiment of the invention, described alternating voltage offer portion 101, including: transformator (not shown), its
In,
Described transformator, is connected with the electric power system of peripheral hardware, for receiving the first alternation of the electric power system input of peripheral hardware
Voltage, and described first alternating voltage is converted to the second alternating voltage；
Described every a pair detecting electrode 102, for receiving the second alternating voltage of described alternating voltage offer portion output.
By above-mentioned transformator, what the 220V voltage of the electric power system of peripheral hardware can be changed into human body can bear is less than
The magnitude of voltage of 24V such as 10V, 5V, 1V etc..
In an alternative embodiment of the invention, in order to ensure by the electric current of human body within human body tolerance range, it is also possible to
Arranging the resistance of fixed size between every a pair detecting electrode 102 and transformator, this resistance ensures the voltage of transformator output
During by closed-loop path, the electric current of generation is within human body tolerance range.
On the other hand, in order to ensure by body current within human body tolerance range, it is also possible at transformator with each
To arranging intelligence control switch between detecting electrode 102, current threshold is set for intelligence control switch, when the current value in loop is more than this electricity
During stream threshold value, this intelligence control switch circuit breaking, thus realize the protection to human body.
As in figure 2 it is shown, in still another embodiment of the process, test section 103, including: amperometric 201, calculating are single
Unit 202 and judgment sub-unit 203, wherein,
Described amperometric 201, for detecting the initial current that every a pair detecting electrode 102 produces, and detects in real time
The running current of every a pair detecting electrode 102；
Described computation subunit 202, for the initial current detected according to described amperometric 201 and the fortune of correspondence
Row electric current, utilizes following computing formula (1), calculates the impedance variation value in the loop that every a pair detecting electrode 102 is formed；
Wherein,Characterize the jth impedance variation value between n-th pair of detecting electrode of amperometric detection；U characterizes friendship
The alternating voltage of time variant voltage offer portion output；In0Characterize the initial current of n-th pair of detecting electrode of amperometric detection；Inj
Jth running current value between n-th pair of detecting electrode of amperometric detection；
Described judgment sub-unit 203, for when described computation subunit 202 calculated impedance variation value is less than zero
Time, determine leakage blood；When described computation subunit 202 calculated impedance variation value is more than zero, determine thrombosis；When described meter
When operator unit 202 calculated impedance variation value is equal to zero, determine that blood flow is normal.
In this embodiment, when acquiescence blood flow state detection equipment is just switched on human body, it is each that test section detects
Current value to detecting electrode is initial current, if blood flow is constantly in steady statue, and detect in real time every a pair of test section
The running current of detecting electrode is identical with initial current value, and when there is leakage blood, blood flow rate is accelerated, with blood flow during original state
The resistance value produced is compared, and can reduce the resistance value that in blood vessel, blood flow produces, thus, making computing formula (1), the impedance of calculating becomes
Change value is less than zero, i.e. when described computation subunit calculated impedance variation value is less than zero, determines leakage blood.If in detection
There is thrombosis in the blood vessel in detection position in electrode, i.e. blood density increases, and blood flow rate slows down, with blood during original state
The resistance value of miscarriage life is compared, and can increase the resistance value that in blood vessel, blood flow produces, thus, make computing formula (1), the impedance of calculating
Changing value is more than zero, i.e. when described computation subunit calculated impedance variation value is more than zero, determines thrombosis.Due to electric current
Detector is the running current detecting every a pair detecting electrode in real time, thus ensures the blood flow state inspection that the embodiment of the present invention provides
Measurement equipment can find Lou blood or thrombosis in time, to remind patient or doctor to process in time.
In an embodiment of the invention, in order to ensure the accuracy of detection, described judgment sub-unit 203, it is used for arranging
First threshold, Second Threshold and the 3rd threshold value, determine and be calculated less than the described computation subunit of described first threshold continuously
The first number of impedance variation value, it is judged that whether described first number more than described 3rd threshold value, if it is, determine leakage
Blood；Determine the second number of the described computation subunit calculated impedance variation value being more than described Second Threshold continuously, sentence
Disconnected described the and number whether more than described 3rd threshold value, if it is, determine leakage blood.Owing to measuring in process or backflow
The impact of the change in impedance value that other positions such as skin produces, or the fluctuation etc. that amperometric produces, can cause electricity unavoidably
The running current that current sensor records has fluctuated, the first threshold that arranged by judgment sub-unit in this embodiment, second
Threshold value and the 3rd threshold value, evaded the current fluctuation caused due to extraneous factor.Such as: arranging first threshold is-10 Ω, second
Threshold value is 10 Ω, and the 3rd threshold value is 15, and 15 impedances of the continuous print that detecting electrode is produced by the m that computation subunit calculates become
Change value is { 0 Ω ,-1 Ω, 0 Ω ,-2 Ω ,-1 Ω, 0 Ω ,-1 Ω, 1 Ω, 0 Ω ,-1 Ω, 1 Ω ,-10 Ω ,-5 Ω, 0 Ω ,-1 Ω, 1
Ω }, from this, can be seen that only having one in 15 impedance variation values of this continuous print reaches first threshold-10 Ω, then at this
In 15 detection time periods, blood flow state is normal.The most such as: another set continuous print impedance variation value be-10 Ω ,-11 Ω ,-
10 Ω ,-12 Ω ,-11 Ω ,-11 Ω ,-12 Ω ,-13 Ω ,-14 Ω ,-13 Ω ,-10 Ω ,-15 Ω ,-15 Ω ,-16 Ω ,-15
Ω ,-16 Ω ,-10 Ω ,-11 Ω ,-12 Ω }, and this impedance variation value being less than first threshold-10 Ω continuously reaches 19, super
Crossed the 3rd threshold value, then there is leakage blood in explanation blood vessel.In embodiments of the present invention, can be by arranging timer statistics continuous print
Impedance variation value is less than the number of first threshold or adds up the continuous print impedance variation value number more than Second Threshold, such as:
When counters count continuous print impedance variation value is more than the number of Second Threshold, calculate second impedance in computation subunit
Changing value is more than 10 Ω, then timer is that it carries out adding 1 operation, and next computation subunit calculates second impedance variation
The next impedance variation value (the 3rd impedance variation value) of value is less than 10 Ω, then impedance variation value goes out the most continuously more than 10 Ω
Existing, then timer resets；Be more than 10 Ω when computation subunit calculates the 5th impedance variation value, then timer is that it adds
1 operation, and next computation subunit calculates next changing value (the 6th impedance variation of the 6th impedance variation value
Value) still above 10 Ω, then timer is that it carries out adding 1 operation, and counters count number is 2；Computation subunit calculates the 7th
Individual impedance variation value is still above 10 Ω, then timer is that it carries out adding 1 operation, and counters count number is 3 etc..I.e. only work as
Impedance variation value is less than first threshold, and, (should be less than the most continuously less than the impedance variation value certain time of first threshold
The number of the impedance variation value of first threshold reaches the 3rd threshold value) just judge blood vessel leakage blood；When impedance variation value is more than the 3rd threshold
Value, and, should be more than the impedance variation value certain time of the 3rd threshold value (the most continuously more than the impedance variation value of the 3rd threshold value
Number reach the 3rd threshold value) just judge that thrombosis occurs in blood vessel, thus ensure the accuracy of detection.
As it is shown on figure 3, in an alternative embodiment of the invention, described test section, farther include: signal adapter 301 He
Display 302, wherein,
Described signal adapter 301, for by described computation subunit 202 calculated impedance variation value, is converted into
The corresponding signal of telecommunication, and export the described signal of telecommunication to described display 302；
Described display 302 is for receiving the signal of telecommunication of described signal adapter 301 output and the most defeated
Go out the signal of telecommunication, form display waveform.In this embodiment can be with signal adapter according to the size of impedance variation value, it is right to be converted to
The power of the signal of telecommunication answered, such as: impedance variation value is 0 Ω, corresponding signal intensity value size is 0Hz, and impedance variation value is
10 Ω, corresponding change in electric value is 20Hz, and impedance variation value is-10 Ω, and corresponding signal of telecommunication size is-20Hz, such as Fig. 4
Shown in, wherein, when Fig. 4 A is for producing leakage blood, the waveform of the signal of telecommunication composition that display shows；When Fig. 4 B is for producing leakage blood, display
The waveform of the signal of telecommunication composition that device shows；I.e. when producing leakage blood, signal of telecommunication size is in-20Hz and following holding certain time；
When producing thrombosis, signal of telecommunication size is in 20Hz and certain time maintained above.
What deserves to be explained is, in order to ensure that the diversity of display display signal is obvious, can turn at signal
Signal amplifier is set between parallel operation and display, it is achieved the amplification to signal, so that the letter after display display signal amplification
Number, thus facilitate medical personnel to check.
In an alternative embodiment of the invention, above-mentioned blood flow state detection equipment, it is applied to the detection of wound blood flow state, it is achieved
Wound blood flow state is detected, persistently to monitor the state of wound, facilitates medical personnel that wound is processed in time, protect
The safety of card patient.In this process, described every a pair detecting electrode adhesion locations is away from wound edge 0-10cm；Described each
The line of the first detecting electrode adhesion locations in detecting electrode with the first detecting electrode adhesion locations is passed described wound, this mistake
Journey ensures that electric current passes wound, to realize the detection to wound blood flow state.
In an embodiment of the invention, in order to remind medical personnel or patient in time, above-mentioned blood flow state detects
Test section in equipment is connected with the warning system of peripheral hardware；When described test section determines that blood flow state is leakage blood, trigger described
The warning system of peripheral hardware is reported to the police；When described test section determines that blood flow state is thrombosis, trigger the warning system report of described peripheral hardware
Alert so that when leaking blood or thrombosis occurs, it is possible to learn in time, and nurse accordingly.
As it is shown in figure 5, the embodiment of the present invention provides a kind of blood flow state detecting system, this system includes: any of the above-described institute
Blood flow state detection equipment 501, electric power system 502 and the warning system 503 stated, wherein,
Described electric power system 502, for the first alternating voltage for detection equipment 501 input of described blood flow state；
Described warning system 503, for when receiving the triggering of described blood flow state detection equipment 501, reporting to the police.
As shown in Figure 6, embodiments providing a kind of blood flow state detection method, the method can include following step
Rapid:
Step 601: every a pair detecting electrode passes through adhesion layer, adheres to skin surface；
Step 602: every a pair detecting electrode receives alternating voltage；
Step 603: detect the impedance variation value in the loop that every a pair detecting electrode is formed；
Step 604: according to described impedance variation value, determine blood flow state.
Due to the difference of blood flow state in blood vessel, the resistance value in the loop of blood flow and a pair detecting electrode structure can be made to have
Institute's difference, i.e. blood flow state changes, and resistance value can be made to change the most accordingly, then, by this impedance variation value, Ji Keding
Property the change of determination blood flow state, during as formed thrombosis, resistance value can be made to increase, when leaking blood, resistance value can be made to reduce, thus
Achieve detection leakage blood and thrombosis simultaneously.
In an embodiment of the invention, in order to the impedance got in the loop that every a pair detecting electrode is formed becomes
Change value, the detailed description of the invention of step 603, including: detect the initial current that every a pair detecting electrode produces, and detection is every in real time
The running current of a pair detecting electrode；And according to the initial current detected and the running current of correspondence, utilize following calculating public affairs
Formula (1), calculates the impedance variation value in the loop that every a pair detecting electrode is formed；
Wherein,Characterize the jth impedance variation value between n-th pair of detecting electrode of amperometric detection；U characterizes friendship
The alternating voltage of time variant voltage offer portion output；In0Characterize the initial current of n-th pair of detecting electrode of amperometric detection；Inj
Jth running current value between n-th pair of detecting electrode of amperometric detection.
Owing to said process is that the running current detecting every a pair detecting electrode in real time is as once run electricity every 1s detection
Stream, then, the real-time change of loop middle impedance changing value can be obtained by computing formula (1), thus ensure the accurate of detection
Property.
In an embodiment of the invention, in order to ensure the accuracy that blood flow state judges, said method is further
Including: first threshold, Second Threshold and the 3rd threshold value are set；The detailed description of the invention of step 604, including: when described impedance becomes
When change value is less than described first threshold, determine the first number of the impedance variation value being less than described first threshold continuously；Judge institute
State whether the first number is more than described 3rd threshold value, if it is, determine leakage blood；When described impedance variation value is more than described the
During threshold value, determine continuously more than described Second Threshold the second number of impedance variation value；Judge described and number whether
More than described 3rd threshold value, if it is, determine leakage blood.Owing to impedance variation value is to obtain in real time, only work as impedance variation
Value continues continuously the regular hour outside a certain threshold value and is just defined as leakage blood or thrombosis, and individual other extrernal resistance in a certain threshold value
Anti-changing value is likely due to what the error that the process such as detection produces caused, therefore, by this embodiment with continuous print in threshold value
Outside impedance variation value number (less than the number of the impedance variation value of first threshold, or, more than the impedance of first threshold
The number of changing value) to consider as the persistent period, it is achieved that size and two parameters of persistent period by impedance variation value are true
Determine blood status, thus ensure to determine the accuracy of blood status.
In an embodiment of the invention, in order to represent the change with the detection time of the impedance variation value more intuitively
Changing, said method farther includes: by calculated impedance variation value, is converted into the signal of telecommunication of correspondence, and passes through display
Export the signal of telecommunication sequentially in time, form display waveform, medical personnel by the change of this waveform it can be clearly seen that resistance
The change of anti-changing value, thus obtain the change of blood flow state intuitively.
In an embodiment of the invention, above-mentioned blood flow state detection method is applied to the detection of wound blood flow state；Described
Every a pair detecting electrode adhesion locations is away from wound edge 0-10cm；In described every a pair detecting electrode, the first detecting electrode adheres to position
Put the line with the first detecting electrode adhesion locations and pass described wound, thus ensure that electric current passes through wound, it is achieved to wound blood
Stream mode detects.
What deserves to be explained is, said process is the state realization at alternating voltage, and this alternating voltage can be avoided blood flow
The impact of state.
As a example by the blood flow state of a certain wound is detected by the blood flow state detecting system shown in Fig. 7, launch explanation
Blood flow state detection method, as shown in Figure 8, this blood flow state detection method may comprise steps of:
Step 800: the equipment that detected by blood flow state is connected respectively to electric power system and warning system；
As it is shown in fig. 7, blood flow state detecting system includes: blood flow state detection equipment 701, electric power system 702 and warning
System 703, wherein, blood flow state detection equipment 701 comprises at least one pair of detecting electrode, in embodiments of the present invention, right with two
As a example by electrode, i.e. shown in Fig. 7 be designated the electrode of 7011 to 1 (electrode a and electrode b) and be designated the electrode of 7012 to 2 (electricity
Pole c and electrode d), wherein, comprises a positive pole and a negative pole, owing to electric power system 702 provides friendship in every pair of electrodes
Time variant voltage, the then positive pole in every pair of electrodes and changing along with the change of alternating voltage between negative pole.Owing to currently powering it is
The voltage of system is generally 220V, in order to be embodied as above-mentioned two pairs of electrodes 7011 and 7012 output human safety voltage, two to electricity
Transformator 7013 is set between pole 7011 and 7012 and electric power system, in order to realize two pairs of electrodes 7011 and 7012 and wound shape
The detection of the electric current in the loop become, blood flow state detection equipment 701 includes test section 7015, in this test section 7015,
Including: amperometric 70151, computation subunit 70152, judgment sub-unit 70153, signal adapter 70154 and display
70155, realize the detection to blood status by each subelement in this test section 7015, its concrete connected mode is from Fig. 7
In can find out intuitively, do not repeat them here.
Step 801: first threshold, Second Threshold and the 3rd threshold value are set；
The first threshold arranged in this step is leakage blood threshold value, i.e. when impedance variation value is less than this first threshold, explanation
Wound may have leakage blood situation to produce, and Second Threshold is thrombosis threshold value, i.e. when impedance variation value is more than this Second Threshold, and explanation
Wound may have thrombosis situation to produce, and the determination leaking blood and thrombosis also needs to by the 3rd threshold value, i.e. when continuously less than this
The number that the impedance variation value of one threshold value occurs reaches the 3rd threshold value, then leakage blood situation occurs in explanation wound；When continuously more than being somebody's turn to do
The number that the impedance variation value of Second Threshold occurs reaches the 3rd threshold value, then thrombosis situation occurs in explanation wound.
Step 802: by least one pair of detecting electrode in blood flow state detection equipment by adhesion layer, adhere to outside wound
The skin surface enclosed；
As it is shown in fig. 7, adhere to around wound 704 respectively by 2 pairs of detecting electrodes 7011 and 7012, meanwhile, make every a pair
Detecting electrode adhesion locations is away from wound edge 0-10cm, to ensure the accuracy to wound detection, it addition, every a pair detecting electrode
In the line of the first detecting electrode adhesion locations and the first detecting electrode adhesion locations through described wound.Can from Fig. 7
Go out, detecting electrode to the line L of detecting electrode a and detecting electrode b in 7011 by wound 704；Detecting electrode is examined in 7012
Survey the line P of electrode c and detecting electrode d by wound 704；Thus ensure the accuracy to wound detection.
Step 803: received the first alternating voltage of electric power system output by the transformator in blood flow state detection equipment；
Step 804: the first alternating voltage is converted to the second alternating voltage by transformator, and the second alternating voltage is exported to
Every a pair detecting electrode；
The process of above-mentioned steps 803 and step 804 is the mistake that detecting electrode inputs alternating voltage for 3 shown in Fig. 7
Journey, is i.e. converted to, by transformator 7013, the alternating voltage that the human body of below 24V can persistently accept by 200V voltage.
Step 805: detected the loop of every a pair detecting electrode formation by the test section in blood flow state detection equipment
Initial current；
The initial current of this step is defaulted as detecting electrode pair and forms loop with wound, has just received the second alternating voltage
Time, first value that test section detects, in fact, for just finishing the wound that operation is formed, blood flow shape when it starts
State is more stable, then the electric current that can produce with initial stage more stable blood flow state is as initial current.
Step 806: the running current in the loop that every a pair detecting electrode of detection in real time is formed；
This detection in real time is to ensure that the integrity that running current gathers, such as: every 1s or every 0.5s detection is once transported
Row electric current.
Step 807: according to initial current and running current, calculate the impedance variation in the loop that every a pair detecting electrode is formed
Value；
In this step, the process of calculating completes mainly by following computing formula (1).
Wherein,Characterize the jth impedance variation value between n-th pair of detecting electrode of amperometric detection；U characterizes friendship
The alternating voltage of time variant voltage offer portion output；In0Characterize the initial current of n-th pair of detecting electrode of amperometric detection；Inj
Jth running current value between n-th pair of detecting electrode of amperometric detection.
Step 808: impedance variation value is converted into the signal of telecommunication of correspondence；
Step 809: be sequentially output the signal of telecommunication sequentially in time, forms display waveform, shows this display by display
Waveform, when impedance variation value is less than first threshold, then performs step 810, when impedance variation value is more than Second Threshold, then holds
Row step 813；
Above-mentioned steps 808 and step 809 primarily in the way of oscillogram just impedance variation value represent intuitively
Out, think that medical personnel carry out wound and process offer reference frame.The above-mentioned process that represents is mainly, and the signal shown in Fig. 7 turns
Impedance variation value is converted into the electrical signal intensity of correspondence by parallel operation 70154, such as: when impedance variation value is 0 Ω, strong to induction signal
Degree is 0Hz；When impedance variation value is 12 Ω, corresponding signal intensity is 24Hz etc..And shown along with inspection by display 70155
The change extending signal intensity of survey time.Owing to impedance variation value may be more small, in order to ensure the explicitly of display, also
Signal amplifier can be set between signal adapter 70154 and display 70155, the letter gone out by signal adapter 70154
Number intensity amplifies certain multiple, so that display 70155 display waveform becomes apparent from.
Step 810: statistics is less than the first number of the impedance variation value of first threshold continuously；
To directly determine whether wound is leaking blood, such as: little less than the number of the impedance variation value of first threshold continuously
When the number of the impedance variation value of first threshold is 1, may be detection mistake once in a while, can not illustrate at leakage blood, when
Detect that the 5th impedance variation value becomes less than first threshold, the 6th impedance variation value, the 7th impedance variation value, the 8th impedance
Change value is respectively less than first threshold, but, the 9th impedance variation value is more than first threshold, the most continuously less than the impedance of first threshold
The number of changing value is 4；The most such as: be respectively less than the first threshold from the 100th impedance variation value to the 115th impedance variation value
Value, the number of the impedance variation value being less than first threshold the most continuously is 16.
Step 811: judge whether described first number is not less than the 3rd threshold value, if it is, perform step 812, otherwise,
Perform step 810；
Such as: the 3rd threshold value of setting is 15；Then in above-mentioned steps 810, when continuously less than the impedance variation of first threshold
When the number of value is 4,4 are less than 15, then not leak blood is described；The number of the impedance variation value being less than first threshold continuously is 16
Time, 16 be more than 15, then explanation leakage blood, by warning system carry out leak blood report to the police so that medical personnel in time to wound at
Reason, ensures the safety of patient.
Step 812: determine that wound occurs leakage blood, triggers warning system and carries out leaking blood warning, and terminate current process；
Step 813: statistics is more than the second number of the impedance variation value of Second Threshold continuously；
Step 814: judge whether described second number is not less than the 3rd threshold value, if it is, perform step 815, otherwise,
Perform step 813；
Above-mentioned steps 813 and the process of step 814: the number of the impedance variation value being more than Second Threshold continuously will be the most true
Make whether wound thrombosis occurs, such as: when being 1 more than the number of the impedance variation value of Second Threshold, may be once in a while
Detection mistake, can not illustrate thrombosis occur, when detecting that the 200th impedance variation value is more than Second Threshold, the 201st impedance
Changing value, the 202nd impedance variation value, the 203rd impedance variation value are respectively less than first threshold, but, the 204th impedance variation
Value is less than Second Threshold, and the number of the impedance variation value being more than Second Threshold the most continuously is 4；The most such as: from the 300th impedance
Changing value is all higher than Second Threshold to the 315th impedance variation value, is more than the number of the impedance variation value of Second Threshold the most continuously
It it is 16.Such as: the 3rd threshold value of setting is 15；Then when being 4 more than the number of the impedance variation value of Second Threshold continuously,
4 are less than 15, then thrombosis does not occurs in explanation wound；When being 16 more than the number of the impedance variation value of Second Threshold continuously, 16 is big
In 15, then explanation wound thrombosis occurs, by warning system carry out leak blood report to the police so that medical personnel in time to wound at
Reason, ensures the safety of patient.
Step 815: determine wound generation thrombosis, triggers warning system and carries out thrombosis warning.
According to such scheme, various embodiments of the present invention, at least have the advantages that
1. it is connected with a pair corresponding detecting electrode by the every a pair alternating voltage port in alternating voltage offer portion, for
A pair corresponding detecting electrode output alternating voltage；And every a pair detecting electrode extremely comprise adhesion layer, every a pair detection electricity
Extremely can pass through adhesion layer, adhere to skin surface, owing to human body is a conductor, then, when two electrodes adhere to human body
On, the human body between two electrodes and two electrodes constitutes Guan Bi circuit, then when a pair detecting electrode receives alternation
During the alternating voltage that voltage offer portion exports, the human body that electric current will be had to be placed through between two electrodes, and electric current is big
Little blood flow state by the human body between two electrodes (blood flow is normal, leakage blood and thrombosis) is affected, the most different blood
Stream mode (blood flow is normal, leak blood and thrombosis) produces different resistance values for Guan Bi circuit, then, when alternating voltage offer portion is
When at least one pair of detecting electrode described provides alternating voltage, detected in the loop that every a pair detecting electrode is formed by test section
Impedance variation value, according to impedance variation value, determines blood flow state, it is achieved that detection thrombosis and leakage blood simultaneously.
By transformator, the voltage of electric power system is converted to the voltage that human body can bear the most in embodiments of the present invention,
So, during detecting, the voltage of every a pair detecting electrode input human body is the magnitude of voltage that human body can bear, thus
Ensure that the safety of detection process.
3. the initial current produced by every a pair detecting electrode of detection, and detect the operation of every a pair detecting electrode in real time
Electric current, and the initial current that detects according to amperometric and the running current of correspondence, calculate every a pair detecting electrode and formed
Loop in impedance variation value；And by setting first threshold and Second Threshold for impedance variation value, and it is impedance variation value
Number the 3rd threshold value is set, i.e. when impedance variation value is less than first threshold, meanwhile, continuously less than the impedance variation of first threshold
When value number reaches three threshold values, it is determined that for leakage blood；When impedance variation value is more than Second Threshold, meanwhile, continuously more than second
When the impedance variation value number of threshold value reaches three threshold values, it is determined that for thrombosis, thus ensure the accurate of detection leakage blood and thrombosis
Property.
4., by signal adapter by calculated impedance variation value, it is converted into the signal of telecommunication of correspondence, and exports telecommunications
Number give display, by display, for receiving the signal of telecommunication of described signal adapter output, and export electricity sequentially in time
Signal, forms display waveform such that it is able to represent the change with the detection time of the impedance variation value more intuitively.
5. by by the every a pair detecting electrode adhesion locations in blood flow state detection equipment away from wound edge 0-10cm；And
The line of the first detecting electrode adhesion locations in every a pair detecting electrode with the first detecting electrode adhesion locations is passed wound, real
Show the detection to wound blood status.
6. it is connected with warning system by blood flow state is detected equipment, when determining Lou blood or thrombosis, by triggering
Warning system is reported to the police, it is achieved report to the police leakage blood or thrombosis, so that medical personnel can give first-aid measures in time or in time
Carry out wound process, further ensure the safety of patient.
It should be noted that in this article, the relational terms of such as first and second etc is used merely to an entity
Or operation separates with another entity or operating space, and not necessarily require or imply existence between these entities or operation
The relation of any this reality or order.And, term " includes ", " comprising " or its any other variant are intended to non-
Comprising of exclusiveness, so that include that the process of a series of key element, method, article or equipment not only include those key elements,
But also include other key elements being not expressly set out, or also include being consolidated by this process, method, article or equipment
Some key elements.In the case of there is no more restriction, statement the key element " including " and limiting, do not arrange
Except there is also other same factor in including the process of described key element, method, article or equipment.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can be passed through
The hardware that programmed instruction is relevant completes, and aforesaid program can be stored in the storage medium of embodied on computer readable, this program
Upon execution, perform to include the step of said method embodiment；And aforesaid storage medium includes: ROM, RAM, magnetic disc or light
In the various medium that can store program code such as dish.
Last it should be understood that the foregoing is only presently preferred embodiments of the present invention, it is merely to illustrate the skill of the present invention
Art scheme, is not intended to limit protection scope of the present invention.All made within the spirit and principles in the present invention any amendment,
Equivalent, improvement etc., be all contained in protection scope of the present invention.
Claims (10)
1. blood flow state detection equipment, it is characterised in that including: alternating voltage offer portion, at least one pair of detecting electrode and
Test section, wherein,
Described alternating voltage offer portion, including: at least one pair of alternating voltage port, wherein, every a pair alternating voltage port and one
Detecting electrode is connected, for exporting alternating voltage for the pair of detecting electrode；
In at least one pair of detecting electrode described, every a pair detecting electrode extremely comprises adhesion layer；
Every a pair detecting electrode passes through described adhesion layer, adheres to skin surface, is used for receiving described alternating voltage offer portion defeated
The alternating voltage gone out；
Described test section, is used for when described alternating voltage offer portion provides alternating voltage at least one pair of detecting electrode described,
Detect the impedance variation value in the loop that every a pair detecting electrode is formed, according to described impedance variation value, determine blood flow state.
Blood flow state the most according to claim 1 detection equipment, it is characterised in that described alternating voltage offer portion, including:
Transformator, wherein,
Described transformator, is connected with the electric power system of peripheral hardware, for receiving the first alternating voltage of the electric power system input of peripheral hardware,
And described first alternating voltage is converted to the second alternating voltage；
Described every a pair detecting electrode, for receiving the second alternating voltage of described alternating voltage offer portion output.
Blood flow state the most according to claim 1 detection equipment, it is characterised in that test section, including: amperometric,
Computation subunit and judgment sub-unit, wherein,
Described amperometric, for detecting the initial current that every a pair detecting electrode produces, and detects every a pair detection in real time
The running current of electrode；
Described computation subunit, for the initial current detected according to described amperometric and the running current of correspondence, profit
By following first computing formula, calculate the impedance variation value in the loop that every a pair detecting electrode is formed；
Wherein,Characterize the jth impedance variation value between n-th pair of detecting electrode of amperometric detection；U characterizes alternation electricity
The alternating voltage of pressure offer portion output；In0Characterize the initial current of n-th pair of detecting electrode of amperometric detection；InjElectric current
Jth running current value between n-th pair of detecting electrode of detector detection；
Described judgment sub-unit, for when described computation subunit calculated impedance variation value is less than zero, determining leakage blood；
When described computation subunit calculated impedance variation value is more than zero, determine thrombosis；When described computation subunit calculates
When the impedance variation value arrived is equal to zero, determine that blood flow is normal.
Blood flow state the most according to claim 3 detection equipment, it is characterised in that
Described judgment sub-unit, is used for arranging first threshold, Second Threshold and the 3rd threshold value, determines continuously less than described first threshold
First number of the described computation subunit calculated impedance variation value of value, it is judged that whether described first number is more than described
3rd threshold value, if it is, determine leakage blood；Determine continuously calculated more than the described computation subunit of described Second Threshold
Second number of impedance variation value, it is judged that described the and number whether more than described 3rd threshold value, if it is, determine leakage blood；
And/or,
Described test section, farther includes: signal adapter and display, wherein,
Described signal adapter, for by calculated for described computation subunit impedance variation value, being converted into the telecommunications of correspondence
Number, and export the described signal of telecommunication to described display；
Described display, for receiving the signal of telecommunication of described signal adapter output, and exports the signal of telecommunication, shape sequentially in time
Become display waveform.
5. according to the arbitrary described blood flow state detection equipment of Claims 1-4, it is characterised in that be applied to wound blood flow shape
State detects；
Described every a pair detecting electrode adhesion locations is away from wound edge 0-10cm；
In described every a pair detecting electrode, the first detecting electrode adhesion locations passes with the line of the first detecting electrode adhesion locations
Described wound.
6. according to the arbitrary described blood flow state detection equipment of Claims 1-4, it is characterised in that described test section and peripheral hardware
Warning system be connected,
When described test section determines that blood flow state is leakage blood, the warning system triggering described peripheral hardware is reported to the police；
And/or,
When described test section determines that blood flow state is thrombosis, the warning system triggering described peripheral hardware is reported to the police.
7. a blood flow state detecting system, it is characterised in that including: the arbitrary described blood flow state detection of claim 1 to 6
Equipment, electric power system and warning system, wherein,
Described electric power system, for the first alternating voltage for the detection equipment input of described blood flow state；
Described warning system, for when receiving the triggering of described blood flow state detection equipment, reporting to the police.
8. a blood flow state detection method, it is characterised in that every a pair detecting electrode passes through adhesion layer, adheres to skin table
Face, also includes:
Every a pair detecting electrode receives alternating voltage；
Detect the impedance variation value in the loop that every a pair detecting electrode is formed；
According to described impedance variation value, determine blood flow state.
Method the most according to claim 8, it is characterised in that
Impedance variation value in the loop that every a pair detecting electrode of described detection is formed, including: detect every a pair detecting electrode and produce
Raw initial current, and detect the running current of every a pair detecting electrode in real time；
According to the initial current detected and the running current of correspondence, utilize following first computing formula, calculate every a pair detection
Impedance variation value in the loop that electrode is formed；
Wherein,Characterize the jth impedance variation value between n-th pair of detecting electrode of amperometric detection；U characterizes alternation electricity
The alternating voltage of pressure offer portion output；In0Characterize the initial current of n-th pair of detecting electrode of amperometric detection；InjElectric current
Jth running current value between n-th pair of detecting electrode of detector detection.
Method the most according to claim 9, it is characterised in that farther include: arrange first threshold, Second Threshold and
3rd threshold value；
Described determine blood flow state according to described impedance variation value, including:
When described impedance variation value is less than described first threshold, determine the continuous impedance variation value less than described first threshold
First number；
Judge whether described first number is more than described 3rd threshold value, if it is, determine leakage blood；
When described impedance variation value threshold value more than described the, determine continuously more than described Second Threshold impedance variation value
The second number；
Judge described the and number whether more than described 3rd threshold value, if it is, determine leakage blood.
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