CN106377256B - A kind of wound blood flow state detection device and acquisition methods - Google Patents
A kind of wound blood flow state detection device and acquisition methods Download PDFInfo
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- CN106377256B CN106377256B CN201610755819.8A CN201610755819A CN106377256B CN 106377256 B CN106377256 B CN 106377256B CN 201610755819 A CN201610755819 A CN 201610755819A CN 106377256 B CN106377256 B CN 106377256B
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Abstract
The present invention provides a kind of wound blood flow state detection device and acquisition methods, which includes at least one set of detecting electrode, corresponding with each group of detecting electrode one group of supply port, detection unit；Each group of detecting electrode includes the first detecting electrode and at least one second detecting electrode, and is connected between each detecting electrode and corresponding supply port by current supply line；Each group of detecting electrode is adhered to the skin surface of tested wound corresponding region；When having electric current to pass through between current supply line, for each group of detecting electrode, a current path is respectively formed between the first detecting electrode therein and any second detecting electrode；Detection unit is according to the impedance variations value in each current path detected, to determine the blood flow state of tested wound.Due to that can form multiple current paths between one group of detecting electrode to reflect the blood flow state of tested wound, so there is no need to multipair detecting electrode is arranged.Therefore, this programme can be realized interelectrode flexible arrangement.
Description
Technical field
The present invention relates to field of medical technology, in particular to a kind of wound blood flow state detection device and acquisition methods.
Background technique
In medical procedure, doctor needs to execute human pathology position operation to release illness.Surgical procedure is complete
At, also need to stop blooding to operative site later, anti-inflammatory, a series of processing such as wrapping.Initial stage needs are quiet after surgery by patient
Support so that operative site gradually rehabilitation and convenient for medical staff understand wound post-operative recovery situation.If wound recovery effects are not
It is good, easily occur bleeding at wound, and the presence of bleeding easily leads to related body position and thrombus situation occurs.
Currently, can be arranged in the human body surface of wound corresponding region in order to multi-faceted monitoring wound recovery situation
Multipair electrode, and every a pair of electrodes includes two electrodes.
Due to needing that multipair electrode is arranged in the same area, when regional scope is limited, existing implementation is not easy
In interelectrode flexible arrangement.
Summary of the invention
The present invention provides a kind of wound blood flow state detection device and acquisition methods, can be realized interelectrode flexible row
Cloth.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
On the one hand, the present invention provides a kind of wound blood flow state detection devices, comprising:
At least one set of detecting electrode, corresponding with each group of detecting electrode one group of supply port, detection unit；
For each group of detecting electrode: this group of detecting electrode includes the first detecting electrode and at least one second detection electricity
Pole, and one group of supply port corresponding with this group of detecting electrode includes the first supply port and at least one second supply port,
Wherein, the number of at least one second detecting electrode is not more than the number of at least one second supply port, and institute
It states the first detecting electrode to be connected by current supply line with first supply port, each described second detecting electrode passes through
Current supply line is connected with any second supply port；
Each group of detecting electrode is adhered to the skin surface of tested wound corresponding region；
When thering is electric current to pass through between the current supply line, for each group of detecting electrode, the first detecting electrode therein and
A current path is respectively formed between any second detecting electrode；
The detection unit, for detecting the impedance variations value in each described current path, and according to the impedance
Changing value is with the blood flow state of the determination tested wound.
Further, wound blood flow state detection device further include: alternating source equipment；
It is provided at least one set of supply port in the alternating source equipment, and by each group of supply port with to correspondence
One group of detecting electrode be powered；
For each group of supply port, when supply current is exported from the first supply port, through each the second supply port
And it inputs；When supply current is exported from each the second supply port, inputted through the first supply port.
Further, when the tested wound corresponding region is tested wound region, each described current path
Part is located in the tested wound region, and the detection unit is used for according to the impedance variations value described in determination
Whether tested wound there is leakage blood；
It is described when the tested wound corresponding region is aortic artery blood supply blood flow overlay area where tested wound
Detection unit is used to whether thrombus occur with the determination tested wound according to the impedance variations value.
Further, first detecting electrode, and/or, second detecting electrode is silica gel electrode patch, and is arranged
At least two electrode contacts are separated at least one insulating tape on the silica gel electrode patch；
When the silica gel electrode patch is adhered to skin surface, each described electrode contacts connects with skin surface
Touching, and the binding post being arranged on each described electrode contacts is connected with same current supply line.
It further, include: target group detecting electrode at least one set of detecting electrode；
The target group detecting electrode includes the first detecting electrode and at least two second detecting electrodes, the first detection electricity
A target current access, and at least two target current accesses formed are respectively formed between pole and corresponding any second detecting electrode
Form parallel current path；
The detection unit includes: current detector, the first computation subunit and the first judgment sub-unit；
The current detector, for detecting the target initial current of each target current access；
First computation subunit, for utilizing following formula according at least two target initial currents detected
(1) deviation threshold is calculated, and calculates the deviation of each target initial current using following formula (2)；
Wherein, i is i-th of target current access in at least two target currents access, and n is described at least two
The access number of target current access, I0iFor the target initial current of i-th of target current access, k is correction coefficient,For institute
State deviation threshold, σiFor the deviation of the target initial current of i-th of target current access；
First judgment sub-unit, for judging that the deviation of each calculated target initial current is respectively
It is no to be greater than the deviation threshold, if so, output is directed to the warning information of the corresponding target current access of the target initial current.
Further, wound blood flow state detection device further include: control unit is provided at least one set of supply port
Alternating source equipment；
The control unit controls the alternating source equipment for passing through, to mention respectively to current path described in each
For the alternating voltage of constant voltage values size；
The detection device includes: current detector, the second computation subunit and the second judgment sub-unit；
The current detector, for detecting the initial current of each current path, and real-time detection each
The running current of the current path；
Second computation subunit, for being performed both by: according to the current path for current path described in each
Initial current calculates the first given threshold using following formula (3), calculates the second given threshold using following formula (4), and
According to the running current of the current path, the impedance variations value in each described current path is calculated using following formula (5)；
Wherein, t1For first given threshold, t2For second given threshold, k1And k2It is correction coefficient, U0For
The alternating voltage that the alternating source equipment provides, I0Initial electricity in the current path detected for the current detector
Stream, RjFor j-th of impedance variations value in current path, IjJ-th in current path detected for the current detector
Running current；
Second judgment sub-unit, for judge the impedance variations value be less than second given threshold when,
Determine that leakage blood occurs in the tested wound；When judging that the impedance variations value is greater than first given threshold, institute is determined
It states tested wound and thrombus occurs.
On the other hand, any of the above-described wound blood flow state detection device middle impedance change is obtained the present invention provides a kind of
The method of change value, comprising:
At least one set of detecting electrode and one group of supply port corresponding with each group of detecting electrode are set；
Each group of detecting electrode is performed both by: the first detection electricity for including by this group of detecting electrode by current supply line
Pole is connected with the first supply port that corresponding one group of supply port includes, and passes through current supply line for this group of detecting electrode
Including each second detecting electrode, any second supply port for including with corresponding one group of supply port respectively be connected；
Each group of detecting electrode is adhered to the skin surface of tested wound corresponding region, so as to work as the current supply line
Between when thering is electric current to pass through, for each group of detecting electrode, equal shape between the first detecting electrode therein and any second detecting electrode
At a current path；
The impedance variations value in each described current path is detected using the detection unit.
Further, the setting one group of supply port corresponding with each group of detecting electrode, comprising: set in alternating source
The standby at least one set of supply port of upper setting, and by each group of supply port to be powered to corresponding one group of detecting electrode,
Wherein,
For each group of supply port, when supply current is exported from the first supply port, through each the second supply port
And it inputs；When supply current is exported from each the second supply port, inputted through the first supply port.
Further, it is described by each group of detection electricity when the tested wound corresponding region is tested wound region
The skin surface for being extremely adhered to tested wound corresponding region includes: that each described current path is partially located to the quilt
It surveys in wound region.
Further, first detecting electrode, and/or, second detecting electrode is silica gel electrode patch, and is arranged
At least two electrode contacts are separated at least one insulating tape on the silica gel electrode patch, and each electrode touches
Binding post is provided on point；
The skin surface that each group of detecting electrode is adhered to tested wound corresponding region, comprising: by each group
Detecting electrode is adhered to the skin surface of tested wound corresponding region, so that each electrode touching that this group of detecting electrode includes
Point be in contact with skin surface, and by the binding post being arranged on each described electrode contacts with same current supply line phase
Even.
It further, include: target group detecting electrode at least one set of detecting electrode；
The target group detecting electrode includes the first detecting electrode and at least two second detecting electrodes, the first detection electricity
A target current access, and at least two target current accesses formed are respectively formed between pole and corresponding any second detecting electrode
Form parallel current path；
This method further include: detect the target initial current of each target current access；
According at least two target initial currents detected, deviation threshold is calculated using following formula (1), and utilize
Following formula (2) calculate the deviation of each target initial current；
Wherein, i is i-th of target current access in at least two target currents access, and n is described at least two
The access number of target current access, I0iFor the target initial current of i-th of target current access, k is correction coefficient,For institute
State deviation threshold, σiFor the deviation of the target initial current of i-th of target current access；
Judge whether the deviation of each calculated target initial current is greater than the deviation threshold respectively, if
It is that output is directed to the warning information of the corresponding target current access of the target initial current.
Further, this method further include: the alternating source of at least one set of supply port is provided with using control unit control
Equipment, to provide the alternating voltage of constant voltage values size to current path described in each respectively；For electricity described in each
Logical circulation road is performed both by: detecting the initial current of the current path；
The impedance variations value detected in each described current path, comprising: each described electric current of real-time detection
The running current of access；Current path described in each is performed both by: according to the initial current of the current path, utilization is following
Formula (5) calculates the impedance variations value in each described current path；
Wherein, U0For the alternating voltage that the alternating source equipment provides, I0The electric current detected for the current detector
Initial current in access, RjFor j-th of impedance variations value in current path, IjThe electricity detected for the current detector
J-th of running current in logical circulation road.
The present invention provides a kind of wound blood flow state detection device and acquisition methods, which includes at least one set of detection
Electrode, corresponding with each group of detecting electrode one group of supply port, detection unit；Each group of detecting electrode includes the first detection
Electrode and at least one second detecting electrode, and be connected between each detecting electrode and corresponding supply port by current supply line；It is each
Group detecting electrode is adhered to the skin surface of tested wound corresponding region；When thering is electric current to pass through between current supply line, for every
One group of detecting electrode is respectively formed a current path between the first detecting electrode therein and any second detecting electrode；Detection is single
Member is according to the impedance variations value in each current path detected, to determine the blood flow state of tested wound.Due to one group of detection
Multiple current paths can be formed between electrode to reflect the blood flow state of tested wound, so there is no need to multipair detecting electrode is arranged.Cause
This, the present invention can be realized interelectrode flexible arrangement.
Detailed description of the invention
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 technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram for wound blood flow state detection device that one embodiment of the invention provides；
Fig. 2 is the structural schematic diagram for another wound blood flow state detection device that one embodiment of the invention provides；
Fig. 3 is the structural schematic diagram for the first detecting electrode of one kind that one embodiment of the invention provides；
Fig. 4 is a kind of side for acquisition wound blood flow state detection device middle impedance changing value that one embodiment of the invention provides
The flow chart of method；
Fig. 5 is another acquisition wound blood flow state detection device middle impedance changing value that one embodiment of the invention provides
The flow chart of method.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, one embodiment of the invention provides a kind of wound blood flow state detection device, comprising:
At least one set of detecting electrode 101, corresponding with each group of detecting electrode one group of supply port 102, detection unit
103；
For each group of detecting electrode 101: this group of detecting electrode 101 include the first detecting electrode 1011 and at least one the
Two detecting electrodes 1012, and one group of supply port 102 corresponding with this group of detecting electrode 101 include the first supply port 1021 and
At least one second supply port 1022, wherein the number of at least one second detecting electrode 1012 no more than it is described extremely
The number of few second supply port 1022, and first detecting electrode 1011 passes through current supply line and first power supply
Port 1021 is connected, each described second detecting electrode 1012 passes through current supply line and any second supply port
1022 are connected；
Each group of detecting electrode 101 is adhered to the skin surface of tested wound corresponding region；
When thering is electric current to pass through between the current supply line, for each group of detecting electrode 101, the first detecting electrode therein
A current path is respectively formed between 1011 and any second detecting electrode 1012；
The detection unit 103, for detecting the impedance variations value in each described current path, and according to the resistance
Anti- changing value is with the blood flow state of the determination tested wound.
The embodiment of the invention provides a kind of wound blood flow state detection device, which includes at least one set of detection electricity
Pole, corresponding with each group of detecting electrode one group of supply port, detection unit；Each group of detecting electrode includes the first detection electricity
Pole and at least one second detecting electrode, and be connected between each detecting electrode and corresponding supply port by current supply line；Each group
Detecting electrode is adhered to the skin surface of tested wound corresponding region；When thering is electric current to pass through between current supply line, for each
Group detecting electrode, is respectively formed a current path between the first detecting electrode therein and any second detecting electrode；Detection unit
According to the impedance variations value in each current path detected, to determine the blood flow state of tested wound.Due to one group of detection electricity
Interpolar can form multiple current paths to reflect the blood flow state of tested wound, and so there is no need to multipair detecting electrode is arranged.Therefore,
The embodiment of the present invention can be realized interelectrode flexible arrangement.
In detail, by being arranged multiple detecting electrodes in human skin surface, the blood flow based on inside of human body, first
Tissue between detecting electrode and corresponding second detecting electrode is similar to a resistance, therefore each detecting electrode ought be connected
When supply port is powered, there is electric current to pass through between the first detecting electrode and corresponding second detecting electrode, and forms an electricity
Logical circulation road, and a current supply circuit is formed with power supply.
In detail, in Fig. 1, the solid line between each supply port and corresponding detecting electrode can be expressed as current supply line, figure
Middle "×" can be expressed as tested wound, and the enclosed region of dilute dotted line between each group of detecting electrode can be expressed as tested wound pair
Region is answered, the close dotted line between each group of detecting electrode can be expressed as current path.
It, can be by two supply ports being connected with the current path, with to the electric current for each current path
Access inputs supply current.And the blood flow state based on inside of human body, it can usually select alternating source logical to each electric current
Road is powered.
Therefore, in an embodiment of the invention, referring to FIG. 2, the wound blood flow state detection device can also include:
Alternating source equipment 201；
It is provided at least one set of supply port 102 in the alternating source equipment 201, and passes through each group of supply port
102 to corresponding one group of detecting electrode 101 to be powered；
For each group of supply port 102, when supply current is exported from the first supply port 1021, second supplied through each
Electric port 1022 and input；When supply current is exported from each the second supply port 1022, through the first supply port 1021
Input.
In detail, when supply current is exported from the first supply port, which can be anode, each the
Two supply ports can be cathode, form one group of mostly negative configuration of electrodes of a face.Correspondingly, alternating current Flow reverse
Afterwards, supply current is inputted from the first supply port, which can be cathode, each second supply port can be with
For anode, it is negative to one group of how positive configuration of electrodes to form one.
Therefore, for same tested wound corresponding region, in order to accurately be able to reflect blood flow state in the region, being based on should
Blood flow flow direction in region, can be arranged one group of detecting electrode in the area, born more with a face or one is negative to how positive electricity
Pole arrangement mode, the impedance variations value from each current loop that multi-faceted monitoring is formed, to reflect tested wound
Real-time blood flow state.
In Fig. 2, one group of detecting electrode shown in left side includes 1 the first detecting electrode and 3 the second detecting electrodes, this
There is a current path between one detecting electrode and each second detecting electrode, due to public same first detecting electrode,
Therefore 3 obtained current paths can be 3 current paths in parallel based on same power supply.
Based on this electrode arrangements, it can use 4 electrodes and realize blood flow state in the same area on 3 blood flow directions
Detection, no setting is required multipair electrode, this implementation is particularly suitable for the limited situation in tested wound region, and detects
As a result accurate, comprehensive.
It is common, patient's initial stages of restoration after surgery, as needed strictly to monitor wound recovery effects within postoperative 48h.In detail
Ground will lead to other positions of human body and blood supply insufficiency occur and the position is made thrombus occur if occurring leakage blood at wound.Therefore, it leaks
Blood condition monitoring position and thrombus condition monitoring position are typically different.
From the above mentioned, in an embodiment of the invention, for for tested wound corresponding region:
When the tested wound corresponding region is tested wound region, each described current path is partially located at
In the tested wound region, the detection unit 103 is used for according to the impedance variations value with the determination tested wound
Whether mouth there is leakage blood；
It is described when the tested wound corresponding region is aortic artery blood supply blood flow overlay area where tested wound
Detection unit 103 is used to whether thrombus occur with the determination tested wound according to the impedance variations value.
In detail, patient is postoperative, and usual blood flow state is normal at wound, i.e., does not occur leaking blood phenomenon.Therefore tested wound two
When the voltage of side is constant, detection unit can use according to the initial current value detected, it is current corresponding initial to calculate
Impedance value, using the judgment basis of each impedance value arrived as subsequent real-time detection.If occurring leakage blood situation, the situation meeting at wound
Cause present current value detected by detection unit to become larger compared with initial current value, correspondingly, calculated present impedance value compared with
Initial impedance value becomes smaller, if impedance value reduction amount is more than corresponding given threshold, can determine that leakage blood occurs in tested wound.
Correspondingly, when occurring leakage blood at tested wound, it is tested the aortic artery blood supply blood flow area of coverage where wound
Easily there is the case where blood supply insufficiency in tissue position in domain.If blood supply wretched insufficiency at this, therefore inside of human body blood flow at this
It is faint, therefore present current value detected by detection unit is small compared with corresponding initial current value, then calculated present impedance value
Become larger compared with initial impedance value.Similarly, if impedance value increase is more than corresponding given threshold, it can determine that tested wound occurs
Thrombus.
Referring to FIG. 2, the corresponding tested wound corresponding region of one group of detecting electrode in left side can be tested wound in Fig. 2
Region；The corresponding tested wound corresponding region of one group of detecting electrode on right side can be big dynamic where tested wound in Fig. 2
The artery blood supply blood flow overlay area of arteries and veins.
Since each group detecting electrode needs to be adhered to human skin surface, and patient may touch in active procedure
Each electrode, therefore electrode delamination problem may occur.If a certain electrode delamination, the current path where the electrode is disconnected, class
It is similar to the feelings of the infinitely small by electric current of the current path, human body equivalent resistance resistance value infinity in the current path
Condition, therefore detection unit can determine whether out that the judging result of thrombus occurs in the corresponding tested wound of the electrode that falls off.Once due to patient
There is leakage blood and thrombotic phenomena, needs to handle in time, therefore for each abnormality detection result, detection unit is detecting exception
As a result it is notified that alarm system with warning reminding afterwards.It can be seen that electrode delamination will cause the case where false alarm.
In order to solve the problems, such as electrode delamination, in an embodiment of the invention, first detecting electrode 1011, and/
Or, second detecting electrode 1012 is silica gel electrode patch, and at least one being set on the silica gel electrode patch is absolutely
Marginal zone is separated at least two electrode contacts；
When the silica gel electrode patch is adhered to skin surface, each described electrode contacts connects with skin surface
Touching, and the binding post being arranged on each described electrode contacts is connected with same current supply line.
For example, in an embodiment of the invention, referring to FIG. 3, by taking first detecting electrode 1011 as an example, institute
The first detecting electrode 1011 is stated as silica gel electrode patch, and be provided with 1 insulating tape 10111 on the silica gel electrode patch to incite somebody to action
It is separated into 2 electrode contacts 10112, when silica gel electrode patch is adhered to skin surface, each described electrode contacts 10112
It is in contact with skin surface, and the binding post 10113 being arranged on each described electrode contacts 10112 is with same for conductance
Line is connected.
It in an embodiment of the invention, equally can be by a detection electricity by changing the number and shape of insulating tape
Pole is separated into other kinds of multiple electrodes contact.
In detail, for each detecting electrode, as long as there are a contacts to be in contact with human skin surface for it
Realize the normal connection of current path.In addition, by the way that a detecting electrode is separated into multiple electrodes contact, and each contact can
To be located at the different directions of same adhesion locations, therefore when patient touches detecting electrode, all directions generally can not be adhered to
Electrode contacts touch and fall off, therefore can effectively solve the operation of erroneous judgement caused by electrode delamination and the false alarm behaviour caused
Make.
In an embodiment of the invention, referring to FIG. 2, including: the inspection of target group in at least one set detecting electrode 101
Survey electrode；
The target group detecting electrode includes the first detecting electrode and at least two second detecting electrodes, the first detection electricity
A target current access, and at least two target current accesses formed are respectively formed between pole and corresponding any second detecting electrode
Form parallel current path；
The detection unit 103 includes: current detector 1031, the first computation subunit 1032 and the first judgment sub-unit
1033；
The current detector 1031, for detecting the target initial current of each target current access；
First computation subunit 1032, for according at least two target initial currents detected, utilization to be following
Formula (1) calculates deviation threshold, and the deviation of each target initial current is calculated using following formula (2)；
Wherein, i is i-th of target current access in at least two target currents access, and n is described at least two
The access number of target current access, I0iFor the target initial current of i-th of target current access, k is correction coefficient,For institute
State deviation threshold, σiFor the deviation of the target initial current of i-th of target current access；
First judgment sub-unit 1033, for judging the inclined of each calculated target initial current respectively
Whether difference is greater than the deviation threshold, if so, output is believed for the alarm of the corresponding target current access of the target initial current
Breath.
In detail, one group of detecting electrode shown in left side includes 1 the first detecting electrode and 3 second detection electricity in Fig. 2
Pole, one group of detecting electrode shown in right side include 1 the first detecting electrode and 2 the second detecting electrodes, therefore two groups of detections electricity
Pole is target group detecting electrode.
This group of detecting electrode as shown in left side in Fig. 2, can be corresponding from alternation power supply to this group of detecting electrode
One group of supply port is powered.If the detecting electrode on the left of wound be electrode 1, wound upper right side detecting electrode be electrode
2, the right mediolateral detecting electrode of wound be electrode 3, wound lower right side detecting electrode be electrode 4, then shape between electrode 1 and electrode 2
At being formed between a current path 1, electrode 1 and electrode 3, one electric current of formation between a current path 2, electrode 1 and electrode 4 is logical
Road 3, and this 3 current paths are parallel circuit, share same alternation power supply.
In an embodiment of the invention, each group supply port can correspond respectively to a sub- power supply, can also be with
Corresponding to same total power supply.
The voltage value of realization principle based on parallel circuit, 3 current path both ends is equal, but the electricity in each current path
Flow valuve is typically different, therefore can detecte the current value in each current path.In order to avoid the current value mistake in any current path
It is big or too small and influence measurement accuracy, therefore the initial current value of each current path can be measured in advance, and passes through above-mentioned formula (1)
The deviation of deviation threshold and each initial current value is calculated with formula (2).Judged by the comparison of each deviation and deviation threshold, it can
With determine the current value in each current path whether be suitable for.
Based on the difference of inside of human body blood flow direction, when each detecting electrode adhesion locations difference, the current path of formation
In equivalent resistance impedance value it is different so that corresponding current detection value is different.Therefore works as and determine in a certain current path
Current value when being not suitable for, can be with the adhesion locations of the corresponding detecting electrode of appropriate adjustment.
For example, if the initial current I of current path 101=3mA, the initial current I of current path 202=8mA, electric current are logical
The initial current I on road 303=10mA, and k=0.5, therefore can calculateMA, σ1=4mA, σ2=1mA, σ3=3mA.
It can thus be seen thatTherefore the warning information for current path 1 can be exported.The adjustable electrode 1 of staff
Adhesion locations so that corresponding initial current is suitable for.And 3 parallel circuit shunting principles are based on, when in current path 1
Current value change when, the current value in other two current path accordingly changes.Electric current inspection can be improved in this implementation
The detection accuracy of survey.
Since the postoperative blood flow state of patient is usually normal, therefore it can recorde the initial impedance value under the state, and with
On the basis of this, to real-time detection during patient's post-operative recovery to each impedance value analyze and determine.
Therefore, in an embodiment of the invention, referring to FIG. 2, the wound blood flow state detection device further include: control
Portion 202 is provided with the alternating source equipment 201 of at least one set of supply port 102；
The control unit 202 controls the alternating source equipment 201 for passing through, respectively to electric current described in each
The alternating voltage of access offer constant voltage values size；
The detection device 103 includes: current detector 1031, the second computation subunit 1034 and the second judgment sub-unit
1035；
The current detector 1031, for detecting the initial current of each current path, and real-time detection is every
The running current of one current path；
Second computation subunit 1034, for being performed both by for current path described in each: logical according to the electric current
The initial current on road, calculates the first given threshold using following formula (3), calculates the second given threshold using following formula (4),
And the running current according to the current path, the impedance in each described current path, which is calculated, using following formula (5) becomes
Change value；
Wherein, t1For first given threshold, t2For second given threshold, k1And k2It is correction coefficient, U0For
The alternating voltage that the alternating source equipment 201 provides, I0In the current path detected for the current detector 1031
Initial current, RjFor j-th of impedance variations value in current path, IjThe electric current detected for the current detector 1031 is logical
J-th of running current in road；
Second judgment sub-unit 1035, for judging the impedance variations value less than second given threshold
When, determine that leakage blood occurs in the tested wound；When judging that the impedance variations value is greater than first given threshold, determine
There is thrombus in the tested wound.
In detail, according to running current and initial current, corresponding impedance variations value, i.e. present impedance value can be calculated
Illustrate that present impedance value is greater than initial impedance value, and when impedance becomes if impedance variations value is positive with the gap value of initial impedance value
When change value is more than corresponding first given threshold, it can determine that thrombus occurs in tested wound.Correspondingly, if impedance variations value is
It is negative, illustrate that present impedance value is less than initial impedance value, and when impedance variations value is less than corresponding second given threshold, it can be true
Surely there is leakage blood in tested wound.
As shown in figure 4, obtaining any of the above-described wound blood flow state detection device the embodiment of the invention provides a kind of
The method of middle impedance changing value, may comprise steps of:
Step 401: setting at least one set of detecting electrode and one group of power supply corresponding with each group of detecting electrode
Port.
Step 402: each group of detecting electrode being performed both by: include by this group of detecting electrode by current supply line first
Detecting electrode is connected with the first supply port that corresponding one group of supply port includes, and is examined the group by current supply line
Survey each second detecting electrode that electrode includes, any second supply port for including with corresponding one group of supply port respectively
It is connected.
Step 403: each group of detecting electrode being adhered to the skin surface of tested wound corresponding region, so that when described
When thering is electric current to pass through between current supply line, for each group of detecting electrode, the first detecting electrode therein and any second detection electricity
Interpolar is respectively formed a current path.
Step 404: detecting the impedance variations value in each described current path using the detection unit.
After obtaining the impedance variations value in each described current path, after can use impedance variations value progress
Continue various required processing, for example, according to the chemical examination parameter of the empirical value of the impedance variations value and other parameters such as personnel, blood
Deng to determine whether tested wound thrombus occurs.Certainly, other processing can also be carried out using the impedance variations value, for example, root
According to the impedance variations value and other test datas, flowing velocity, rate of change of blood etc. are determined.
In an embodiment of the invention, in order to illustrate a kind of possible power supply mode, so, it is described to be arranged and each group
The corresponding one group of supply port of detecting electrode, comprising: at least one set of supply port is set in alternating source equipment, and by every
One group of supply port to corresponding one group of detecting electrode to be powered, wherein for each group of supply port, supply current from
When first supply port exports, inputted through each second supply port；Supply current is defeated from each second supply port
When out, inputted through the first supply port.
In detail, for same tested wound corresponding region, for the impedance variations feelings being accurately able to reflect in the region
Condition, therefore one group of detecting electrode can be set in the area, it is mostly negative with a face or one is negative to how positive configuration of electrodes, from
The impedance variations value in each current path that multi-faceted monitoring is formed.
In an embodiment of the invention, it is described to incite somebody to action when the tested wound corresponding region is tested wound region
The skin surface that each group of detecting electrode is adhered to tested wound corresponding region includes: by each equal portion of current path
Quartile is in the tested wound region.
In detail, each group of detecting electrode is corresponded to, the first detecting electrode and each second inspection in this group of detecting electrode
Interelectrode line is surveyed, is considered as current path between the two.By setting part positioned at tested for the current path
In wound region, detection unit can use to detect the curent change situation of the current path, to obtain the electric current
The impedance variations value of access.
In an embodiment of the invention, in order to solve the problems, such as electrode delamination, so, first detecting electrode, and/
Or, second detecting electrode is silica gel electrode patch, and at least one insulating tape being set on the silica gel electrode patch
At least two electrode contacts are separated into, and are provided with binding post on each electrode contacts；
The skin surface that each group of detecting electrode is adhered to tested wound corresponding region, comprising: by each group
Detecting electrode is adhered to the skin surface of tested wound corresponding region, so that each electrode touching that this group of detecting electrode includes
Point be in contact with skin surface, and by the binding post being arranged on each described electrode contacts with same current supply line phase
Even.
In detail, by changing the number and shape of insulating tape, a detecting electrode can be separated into different types of
Multiple electrodes contact.
In detail, for each detecting electrode, as long as there are a contacts to be in contact with human skin surface for it
Realize the normal connection of current path.In addition, by the way that a detecting electrode is separated into multiple electrodes contact, and each contact can
To be located at the different directions of same adhesion locations, therefore when patient touches detecting electrode, all directions generally can not be adhered to
Electrode contacts touch and fall off, therefore can effectively solve the operation of erroneous judgement caused by electrode delamination and the false alarm behaviour caused
Make.
In an embodiment of the invention, in order to improve the detection accuracy of current detecting, so, at least one set of detection
It include: target group detecting electrode in electrode；
The target group detecting electrode includes the first detecting electrode and at least two second detecting electrodes, the first detection electricity
A target current access, and at least two target current accesses formed are respectively formed between pole and corresponding any second detecting electrode
Form parallel current path；
This method can also include: to detect the target initial current of each target current access；According to detecting
At least two target initial currents, calculate deviation threshold using above-mentioned formula (1), and calculate using above-mentioned formula (2) every
The deviation of one target initial current；Judge whether the deviation of each calculated target initial current is big respectively
In the deviation threshold, if so, output is directed to the warning information of the corresponding target current access of the target initial current.
In detail, judged by the comparison of the deviation of each current path and corresponding deviation threshold, can determine same group
Detecting electrode is accordingly in multiple current paths, the excessive or too small current path of current value.It is corresponding to examine when current value is too small
Survey precision and accuracy, and when current value is excessive will lead to other current paths current value it is too small.
It therefore, can be with the corresponding detecting electrode of appropriate adjustment when determining that the current value in a certain current path is not suitable for
Adhesion locations.This implementation is beneficial to improve the precision and accuracy of test result.
In detail, determine that the possibility implementation of impedance variations value can be with are as follows: voltage value constant, according to the electric current detected
Value is to determine impedance variations value.
Therefore, in an embodiment of the invention, this method can also include: that control unit control is provided at least one
The alternating source equipment of group supply port, to provide the alternation electricity of constant voltage values size to current path described in each respectively
Pressure；Current path described in each is performed both by: detecting the initial current of the current path；
The impedance variations value detected in each described current path, comprising: each described electric current of real-time detection
The running current of access；Current path described in each is performed both by: according to the initial current of the current path, utilization is above-mentioned
Formula (5) calculates the impedance variations value in each described current path.
As shown in figure 5, the embodiment of the invention provides another kinds to obtain any of the above-described wound blood flow state detection dress
The method for setting middle impedance changing value, may comprise steps of:
Step 501: 2 groups of supply ports are arranged, and pass through each group in 2 groups of detecting electrodes of setting in alternating source equipment
Supply port to corresponding one group of detecting electrode to be powered.
It in detail, may include first detecting electrode and multiple second detecting electrodes in each group of detecting electrode.Example
Such as, in the embodiment of the present invention, in 2 groups of detecting electrodes of setting, first group of detecting electrode includes 1 the first detecting electrode and 3
Second detecting electrode, second group of detecting electrode include 1 the first detecting electrode and 2 the second detecting electrodes.
In detail, it for each group of supply port, when supply current is exported from the first supply port, second is supplied through each
Electric port and input；When supply current is exported from each the second supply port, inputted through the first supply port.
Step 502: each group of detecting electrode being performed both by: include by this group of detecting electrode by current supply line first
Detecting electrode is connected with the first supply port that corresponding one group of supply port includes, and is examined the group by current supply line
Survey each second detecting electrode that electrode includes, any second supply port for including with corresponding one group of supply port respectively
It is connected.
In detail, by current supply line each detecting electrode to be connected with corresponding supply port, confession can be passed through
Electric port to detecting electrode to be powered.
Step 503: each group of detecting electrode being adhered to the skin surface of tested wound corresponding region, so that when power supply
When thering is electric current to pass through between conducting wire, for each group of detecting electrode, between the first detecting electrode therein and any second detecting electrode
It is respectively formed a current path.
In detail, each detecting electrode all can be silica gel electrode patch, and be set on silica gel electrode patch extremely
A few insulating tape is separated at least two electrode contacts, and is provided with binding post on each electrode contacts.
Wherein, when each group of detecting electrode being adhered to the skin surface of tested wound corresponding region, this can be made
Each electrode contacts that group detecting electrode includes are in contact with skin surface.Furthermore, it is possible to by each electrode contacts
The binding post of setting is connected with same current supply line.
For same detecting electrode, any electrode contacts are in contact to skin surface can be realized the company of corresponding current path
It is logical, therefore this implementation can be to avoid the false alarm of erroneous judgement caused by due to detecting electrode is fallen off by patient's touching and initiation
Situation.
In detail, for above-mentioned first group of detecting electrode, 3 current paths, and 3 current paths formed can be formed
Parallel current path is formed, for above-mentioned second group of detecting electrode, 2 current paths can be formed, and 2 electric currents formed are logical
Road forms parallel current path.
Step 504: alternating source equipment is controlled using control unit, to provide constant voltage to each current path respectively
It is worth the alternating voltage of size.
In detail, 2 groups of supply ports in the embodiment of the present invention can correspond respectively to a sub- power supply, can also be with
Corresponding to same total power supply.
Step 505: being directed to each group of detecting electrode, be performed both by: it is logical to detect each corresponding electric current of this group of detecting electrode
The initial current on road, and according to the deviation of each initial current calculating deviation threshold and each initial current that detect.
In detail, it can use above-mentioned formula (1) and calculate deviation threshold, and calculate each using above-mentioned formula (2)
The deviation of initial current.
Step 506: judge whether the deviation of each calculated initial current is greater than corresponding deviation threshold respectively, if
It is that output is directed to the warning information of the corresponding current path of the initial current, and terminates current process, otherwise, executes step
507。
In detail, if the deviation of a certain initial current is more than corresponding deviation threshold, staff is receiving warning information
Afterwards, the corresponding detecting electrode of the initial current can suitably be moved in the adhesion locations of human skin surface.
Step 507: detecting the initial current of each current path, and the operation electricity of real-time detection each current path
Stream.
Step 508: according to the initial current and running current of each current path detected, calculating each current path
In impedance variations value.
In detail, it can use above-mentioned formula (5) and calculate impedance variations value in each current path.
In detail, for any human body, since the difference of inside of human body blood flow state will cause the resistance at the position
It is anti-to change, therefore can use detection unit to detect the impedance variations value at tested wound corresponding region.In the present invention one
In a embodiment, if occurring leakage blood at tested wound, it will lead to other positions of human body and blood supply insufficiency occur and the position occur
Thrombus.Therefore, when the adhesion locations of corresponding two detecting electrodes of a current path are tested wound region, if meter
When the impedance variations value of calculating is less than corresponding given threshold, blood flow anomalies at tested wound can be suspected, such as be likely to occur leakage
Blood；The aortic artery blood supply blood where the adhesion locations of corresponding two detecting electrodes of a current path are tested wound
When flowing overlay area, if calculated impedance variations value is greater than corresponding given threshold, it can suspect that blood flow is different at tested wound
Often, such as it is likely to occur thrombus.
In an embodiment of the invention, for each current path, can be existed with real-time detection to the current path
The impedance variations value at each moment, therefore each impedance variations value that can be will test, according to time sequencing to form impedance change
Change value floating curve.When detection unit is connected with display equipment, which can be exported to display equipment to carry out
It has been shown that, in order to associated care, personnel are checked.
In conclusion each embodiment of the invention at least has the following beneficial effects:
1, in the embodiment of the present invention, a kind of wound blood flow state detection device is provided, including at least one set of detecting electrode,
Corresponding with each group of detecting electrode one group of supply port, detection unit；Each group of detecting electrode includes the first detecting electrode
With at least one the second detecting electrode, and it is connected between each detecting electrode and corresponding supply port by current supply line；Each group of inspection
Survey the skin surface that electrode is adhered to tested wound corresponding region；When thering is electric current to pass through between current supply line, for each group
Detecting electrode is respectively formed a current path between the first detecting electrode therein and any second detecting electrode；Detection unit root
According to the impedance variations value in each current path detected, to determine the blood flow state of tested wound.Due to one group of detecting electrode
Between can form multiple current paths to reflect the blood flow state of tested wound, so there is no need to multipair detecting electrode is arranged.Therefore, originally
Inventive embodiments can be realized interelectrode flexible arrangement.
2, in the embodiment of the present invention, for same tested wound corresponding region, in order to accurately be able to reflect blood in the region
One group of detecting electrode can be arranged based on the blood flow flow direction in the region in stream mode in the area, mostly negative or one with a face
The impedance variations value to how positive configuration of electrodes, from each current loop that multi-faceted monitoring is formed is born, thus instead
Mirror the real-time blood flow state of tested wound.This implementation no setting is required multipair electrode is particularly suitable for tested wound institute
In the situation that region is limited, and testing result is accurate, comprehensive.
3, in the embodiment of the present invention, for each detecting electrode, as long as there are a contact and human skin surfaces for it
It is in contact, the normal connection of current path can be realized.In addition, by the way that a detecting electrode is separated into multiple electrodes contact,
And each contact can be located at the different directions of same adhesion locations, therefore when patient touches detecting electrode, it generally can not incite somebody to action
The electrode contacts of all directions adherency, which are touched, to fall off, therefore can effectively solve the operation of erroneous judgement caused by electrode delamination and draw
The false alarm of hair operates.
It 4,, can be with appropriate adjustment when determining that the current value in a certain current path is not suitable in the embodiment of the present invention
The adhesion locations of corresponding detecting electrode.This implementation is beneficial to improve the precision and accuracy of test result.
It should be noted that, in this document, such as first and second etc relational terms are used merely to an entity
Or operation is distinguished with another entity or operation, is existed without necessarily requiring or implying between these entities or operation
Any actual relationship or order.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-
It is exclusive to include, so that the process, method, article or equipment for including a series of elements not only includes those elements,
It but also including other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.In the absence of more restrictions, the element limited by sentence " including one ", is not arranged
Except there is also other identical factors in the process, method, article or apparatus that includes the element.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can store in computer-readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
In the various media that can store program code such as disk.
Finally, it should be noted that the foregoing is merely presently preferred embodiments of the present invention, it is merely to illustrate skill of the invention
Art scheme, is not intended to limit the scope of the present invention.Any modification for being made all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., are included within the scope of protection of the present invention.
Claims (4)
1. a kind of wound blood flow state detection device characterized by comprising
At least one set of detecting electrode, corresponding with each group of detecting electrode one group of supply port, detection unit；
For each group of detecting electrode: this group of detecting electrode includes the first detecting electrode and at least one second detecting electrode, and
One group of supply port corresponding with this group of detecting electrode includes the first supply port and at least one second supply port, wherein
The number of at least one second detecting electrode is not more than the number of at least one second supply port, and described first
Detecting electrode is connected by current supply line with first supply port, each described second detecting electrode is by for conductance
Line is connected with any second supply port；
Each group of detecting electrode is adhered to the skin surface of tested wound corresponding region；
When thering is electric current to pass through between the current supply line, for each group of detecting electrode, the first detecting electrode therein and any
A current path is respectively formed between second detecting electrode；
The detection unit is opened for detecting the impedance variations value in each described current path according to the impedance variations
It is worth with the blood flow state of the determination tested wound,
When the tested wound corresponding region is tested wound region, each described current path is partially located at described
In tested wound region, whether the detection unit according to the impedance variations value with the determination tested wound for being gone out
Now leak blood；
When the tested wound corresponding region is aortic artery blood supply blood flow overlay area where tested wound, the detection
Unit is used to whether thrombus occur with the determination tested wound according to the impedance variations value；
And/or
First detecting electrode, and/or, second detecting electrode is silica gel electrode patch, and is set to the silica gel electricity
At least one insulating tape on the patch of pole is separated at least two electrode contacts；
When the silica gel electrode patch is adhered to skin surface, each described electrode contacts is in contact with skin surface, and
The binding post being arranged on each described electrode contacts is connected with same current supply line.
2. wound blood flow state detection device according to claim 1, which is characterized in that
Further comprise: alternating source equipment；
It is provided at least one set of supply port in the alternating source equipment, and by each group of supply port with to corresponding one
Group detecting electrode is powered；
It is defeated through each second supply port when supply current is exported from the first supply port for each group of supply port
Enter；When supply current is exported from each the second supply port, inputted through the first supply port.
3. wound blood flow state detection device according to claim 1, which is characterized in that
It include: target group detecting electrode in at least one set detecting electrode；
The target group detecting electrode include the first detecting electrode and at least two second detecting electrodes, first detecting electrode and
At least two target current accesses composition for being respectively formed a target current access between corresponding any second detecting electrode, and being formed
Parallel current path；
The detection unit includes: current detector, the first computation subunit and the first judgment sub-unit；
The current detector, for detecting the target initial current of each target current access；
First computation subunit, for being counted using following formula (1) according at least two target initial currents detected
Deviation threshold is calculated, and calculates the deviation of each target initial current using following formula (2)；
Wherein, i is i-th of target current access in at least two target currents access, and n is at least two target
The access number of current path, I0iFor the target initial current of i-th of target current access, k is correction coefficient,It is described inclined
Poor threshold value, σiFor the deviation of the target initial current of i-th day mark current path；
Whether first judgment sub-unit, the deviation for judging each calculated target initial current respectively are big
In the deviation threshold, if so, output is directed to the warning information of the corresponding target current access of the target initial current.
4. wound blood flow state detection device according to any one of claims 1 to 3, which is characterized in that
Further include: control unit is provided with the alternating source equipment of at least one set of supply port；
The control unit, for being provided with respectively to current path described in each permanent by controlling the alternating source equipment
The alternating voltage of constant voltage value size；
The detection device includes: current detector, the second computation subunit and the second judgment sub-unit；
The current detector, for detecting the initial current of each current path, and real-time detection is described in each
The running current of current path；
Second computation subunit, for being performed both by: according to the initial of the current path for current path described in each
Electric current calculates the first given threshold using following formula (3), using the second given threshold of following formula (4) calculating, and according to
The running current of the current path calculates the impedance variations value in each described current path using following formula (5)；
Wherein, t1For first given threshold, t2For second given threshold, k1And k2It is correction coefficient, U0It is described
The alternating voltage that alternating source equipment provides, I0The initial current in current path detected for the current detector, RjFor
J-th of impedance variations value in current path, ljJ-th of operation electricity in the current path detected for the current detector
Stream；
Second judgment sub-unit, for determining when judging that the impedance variations value is less than second given threshold
There is leakage blood in the tested wound；When judging that the impedance variations value is greater than first given threshold, the quilt is determined
It surveys wound and thrombus occurs.
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| US8398603B2 (en) * | 2006-02-28 | 2013-03-19 | Coloplast A/S | Leak sensor |
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