CN204016288U - Biological impedance probe and measuring system based on spectral characteristic - Google Patents
Biological impedance probe and measuring system based on spectral characteristic Download PDFInfo
- Publication number
- CN204016288U CN204016288U CN201420161751.7U CN201420161751U CN204016288U CN 204016288 U CN204016288 U CN 204016288U CN 201420161751 U CN201420161751 U CN 201420161751U CN 204016288 U CN204016288 U CN 204016288U
- Authority
- CN
- China
- Prior art keywords
- electrode
- probe
- curve
- impedance
- electrical quantity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
This utility model relates to biological impedance field, specifically discloses a kind of biological impedance probe and measuring system based on spectral characteristic.This measuring probe comprises substrate and embeds at least six electrodes of described substrate, described six electrodes are the first electrode, the second electrode, third electrode, the 4th electrode, the 5th electrode and the 6th electrode, wherein the first electrode and the 4th electrode or/and the second electrode and the 5th electrode or/and third electrode and the 6th electrode be oppositely arranged, and be oppositely arranged between electrode and encouraging arbitrarily, described electrode is circumference array and distributes and have two electrode pairs axisymmetricly at least on substrate.Therefore this utility model probe has the advantages that signals collecting is stable, simple in structure.In addition, this utility model also provides the bio-impedance testing system based on spectral characteristic, from effectively reducing probe and measuring the impact of organizing Contact impedance, has also improved the accuracy that judges whether to be positioned at human or animal body tissue intersection.
Description
Technical field
This utility model relates to biological impedance field, especially relates to a kind of biological impedance probe and measuring system based on spectral characteristic.
Background technology
The impedance frequency characteristic of biological tissue, is also referred to as impedance spectrum (Impedance spectroscopy) characteristic, mainly refers in biological tissue's electrical impedance, and along with loading, the frequency of the signal of telecommunication is different, and variation more significantly can occur the value of resistive and capacitive composition.Due to bio-electrical impedance and measuring frequency closely related, in audiorange, its impedance is closely related with arrangement mode, intercellular substance content and the electrolyte concentration of the variation characteristic of frequency and its cellular morphology structure, cell.Thereby obtain the tissue of this frequency range or the electrical impedance characteristics of organ and all have importantly using value at aspects such as understanding the state of tissue, assessment organ dysfunction, pathological tissues identification, thereby there is tempting development prospect in fields such as the early diagnosis of health status assessment, disease, curative effect of medication monitoring and critical illness monitorings.
And now low-tension current is crossed to biological tissue by electrode stream, and measure some pathological condition of tissue of patient impedance monitoring for realizing, wherein biological tissue can be the tissue such as mammary gland, cervix uteri.For example: in the time that the probe by being provided with electrode carries out cervical cancer screening, the squamous epithelial tissue of two kinds of main normal structures and columnar structure, and in impedance spectrum, can tell well these two kinds of tissues.Because the impedance spectrum of organizing before canceration is between normal squamous epithelium and the impedance spectrum of columnar structure, if thereby while probe being placed near the cavity of uterus of these two kinds of tissue boundary, the impedance of surveying may look like tissue before canceration.Thus, the position that probe is placed is the key factor that impact is measured, as: the improper positive findings leading to errors in position that probe is placed.Along with the development of medical skill, more and more require to design that a kind of signals collecting is more stable, acquisition mode is various and be beneficial to the measuring probe of subsequent analysis.
Utility model content
The deficiency existing for above-mentioned prior art, it is stable that the purpose of this utility model is to provide a kind of signals collecting, simple in structure and biological impedance probe based on spectral characteristic, comprise at least six electrodes of substrate and the described substrate of embedding, described six electrodes are the first electrode, the second electrode, third electrode, the 4th electrode, the 5th electrode and the 6th electrode, wherein the first electrode and the 4th electrode or/and the second electrode and the 5th electrode or/and third electrode and the 6th electrode be oppositely arranged, and be oppositely arranged between electrode and encouraging arbitrarily, described electrode is circumference array and distributes and have two electrode pairs axisymmetricly at least on substrate.
Preferably, the surface of described electrode flushes with described real estate respectively, and between adjacent electrode, spacing equates.
Preferably, the interelectrode angle of circumference being oppositely arranged described in is 180 °.
The deficiency existing for above-mentioned prior art, the purpose of this utility model is to provide a kind of signals collecting stablizes, avoids the measuring system of the biological impedance probe based on spectral characteristic of the impact of contact impedance, and described measuring system comprises:
Probe, described probe comprises substrate and embeds at least six electrodes of described substrate, described six electrodes are the first electrode, the second electrode, third electrode, the 4th electrode, the 5th electrode and the 6th electrode, and described electrode is circumference array and distributes and have two electrode pairs axisymmetricly at least on substrate;
For between the first electrode and the 4th electrode that are oppositely arranged, between the second electrode and the 5th electrode and N the different frequent points f encouraging between third electrode and the 6th electrode
idriving source, wherein i=1,2,3 ... N;
Be used for measuring the first electrical quantity D between the second electrode and third electrode
1iand the 5th the second electrical quantity D between electrode and the 6th electrode
2i, the 3rd electrical quantity D between third electrode and the 4th electrode
3iand first the 4th electrical quantity D between electrode and the 6th electrode
4i, the 5th electrical quantity D between the 4th electrode and the 5th electrode
5iand first the 6th electrical quantity D between electrode and the second electrode
6isignal acquisition circuit;
The multiselect switching system of at least six electrodes and driving source, signal acquisition circuit break-make described in control;
Being used for is D by three groups of electrical quantitys
1iand D
2i, D
3iand D
4i, D
5iand D
6iafter record, storage and logical judgment, statistical analysis becomes the spectrum analyzer of bio-impedance spectral curve.
Preferably, the surface of described electrode flushes with described real estate respectively, and between adjacent electrode, spacing equates.
Preferably, the interelectrode angle of circumference being oppositely arranged described in is 180 °.
Preferably, described in, record N the first electrical quantity D between the second electrode and third electrode
1istatistical analysis obtains curve a, also records N the second electrical quantity D between the 5th electrode and the 6th electrode
2istatistical analysis obtains curve b, thereby curve a and curve b form first pair of bio-impedance spectral curve.
Preferably, at N different frequent points f
iunder when encouraging between the second electrode and the 5th electrode, record N the 3rd electrical quantity D between third electrode and the 4th electrode
3istatistical analysis obtains curve c, also records N the 4th electrical quantity D between the first electrode and the 6th electrode
4istatistical analysis obtains curve d, thereby curve c and curve d form second pair of bio-impedance spectral curve.
Preferably, at N different frequent points f
iunder when encouraging between third electrode and the 6th electrode, record N the 5th electrical quantity D between the 4th electrode and the 5th electrode
5istatistical analysis obtains curve e, also records N the 6th electrical quantity D between the first electrode and the second electrode
6istatistical analysis obtains curve f, thereby curve e and curve f form the 3rd pair of bio-impedance spectral curve.
Preferably, described frequency f
i∈ [f
m, f
n], wherein f
m<f
n.
Adopt after said structure, the advantage that this utility model has is:
1, the surface of the electrode in probe described in the utility model flushes with described real estate, ensures the concordance of each electrode image data in probe, makes signals collecting more accurate, stable;
2, probe described in the utility model at least comprises that by arranging six electrodes, described six electrodes are respectively equidistant circumference array and distribute on substrate, thereby makes drainage pattern various, is beneficial to the mutual compare of analysis of image data between every kind of drainage pattern;
3, system and method described in the utility model has solved the measurement error causing when point across different bio-tissue when excitation and/or measurement electrode, do not need rotation or traverse measurement probe can judge whether surveyed organism is same organism, make signals collecting more stable, operation simpler, measurement result is more accurate;
4, system and method described in the utility model is for select multiple frequencies by logarithmic form between certain limit frequency, wherein can adopt three kinds of different measuring patterns to a certain frequency, measure six groups of impedance datas, be beneficial to differentiation and the data analysis of inhomogeneity biological tissue;
5, system and method described in the utility model can reduce the contact impedance of probe and different biological tissues intersection, and statistical analysis obtains bio-impedance spectral curve and determine the various situations of probe and different biological tissues intersection in conjunction with weighting method, applied widely, operation easier reduces.
Brief description of the drawings
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is the structural representation of probe described in this utility model one embodiment.
Fig. 2 be described in this utility model embodiment probe and inhomogeneity tissue boundary in Q1 view;
Fig. 3 be described in this utility model one embodiment probe and inhomogeneity tissue boundary in Q2 view;
Fig. 4 be described in this utility model one embodiment probe and inhomogeneity tissue boundary in Q3 view;
Fig. 5 is the structural representation of measuring system described in another embodiment of this utility model;
Fig. 6 is three pairs of bio-impedance spectral curve schematic diagrams of Fig. 2 process measuring system gained inhomogeneity described in the utility model biological tissue;
Fig. 7 is three pairs of bio-impedance spectral curve schematic diagrams of Fig. 3 process measuring system gained inhomogeneity described in the utility model biological tissue;
Fig. 8 is three pairs of bio-impedance spectral curve schematic diagrams of Fig. 4 process measuring system gained inhomogeneity described in the utility model biological tissue;
Fig. 9 is that measuring system described in the utility model is to three of similar biological tissue pairs of bio-impedance spectral curve schematic diagrams.
Reference numeral:
10-visits probe, 11-substrate, 12-the first electrode, 13-the second electrode, 14-third electrode, 15-the 4th electrode, 16-the 5th electrode, 17-the 6th electrode; 20-multiselect switching system; 30-driving source; 40-signal acquisition circuit; 50-spectrum analyzer; Q1-inhomogeneity tissue boundary is located on or near the center of probe; Q2-inhomogeneity tissue boundary is away from center or the boundary position of probe; Q3-inhomogeneity tissue boundary is located on or near the boundary position of probe; A, b, c, d, e, f-are bio-impedance spectral curve.
Detailed description of the invention
The following stated is only preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
As shown in Figure 1, this utility model provides a kind of biological impedance probe 10 based on spectral characteristic, comprise at least six electrodes of substrate 11 and the described substrate 11 of embedding, described six electrodes are the first electrode 12, the second electrode 13, third electrode 14, the 4th electrode 15, the 5th electrode 16 and the 6th electrode 17, wherein the first electrode 12 and the 4th electrode 15, the second electrode 13 and the 5th electrode 16, third electrode 14 and the 6th electrode 17 are oppositely arranged respectively, and be oppositely arranged between electrode and encouraging arbitrarily, described electrode is circumference array and distributes and have two electrode pairs axisymmetricly at least on substrate 11.
Fully contact and the accuracy of image data in order to make described probe 10 and to measure tissue, the surface of described electrode flushes with described substrate 11 faces respectively, and between adjacent electrode, spacing is equal.The interelectrode angle of circumference being oppositely arranged is in the present embodiment 180 °, so that image data better.
As shown in Figure 2, Figure 3 and Figure 4, probe described in the utility model contacts and generally can be summarized as Q1, Q2 and tri-kinds of situations of Q3 with inhomogeneity biological tissue intersection.And can, between the first electrode 12 being oppositely arranged and the 4th electrode 15, between the second electrode 13 and the 5th electrode 16 or excitation between third electrode 14 and the 6th electrode 17, make operator under the excitation of certain frequency driving source, collect three groups of data by described probe 10 by probe 10 described in the utility model.And by driving source to the different frequency of probe, can obtain three groups of different data, be convenient to analyze and draw the bio-impedance line chart of setting a song to music of measuring tissue, thereby confirm more exactly the boundary of the inhomogeneity biological tissue of human or animal body, be also convenient to pathology biological tissue to diagnose.
Therefore, probe described in the utility model is compared with traditional four electrode catheters, although picking rate is more or less the same, but acquisition means is various, and the data of organizing for collection measurement more comprehensively, can reduce significantly the impact of the interference factor of environmental condition, operating process etc. in actual clinical, draw in real time measured organization's intersection.
Shown in Fig. 1 and Fig. 5, this utility model provides again a kind of measuring system of the biological impedance probe based on spectral characteristic, and described measuring system comprises:
Probe 10, described probe 10 comprises substrate 11 and embeds at least six electrodes of described substrate 11, described six electrodes are the first electrode 12, the second electrode 13, third electrode 14, the 4th electrode 15, the 5th electrode 16 and the 6th electrode 17, and described electrode is circumference array and distributes and have two electrode pairs axisymmetricly at least on substrate 11;
For between the first electrode 12 and the 4th electrode 15 that are oppositely arranged, between the second electrode 13 and the 5th electrode 16 and N different frequent points f of excitation between third electrode 14 and the 6th electrode 17
idriving source, wherein i=1,2,3 ... N;
Be used for measuring the first electrical quantity D between the second electrode 13 and third electrode 14
1iwith the second electrical quantity D between the 5th electrode 16 and the 6th electrode 17
2i, the 3rd electrical quantity D between third electrode 14 and the 4th electrode 15
3iwith the 4th electrical quantity D between the first electrode 12 and the 6th electrode 17
4i, the 5th electrical quantity D between the 4th electrode 15 and the 5th electrode 16
5iwith the 6th electrical quantity D between the first electrode 12 and the second electrode 13
6isignal acquisition circuit;
The multiselect switching system 20 of at least six electrodes and driving source 30, signal acquisition circuit 40 break-makes described in control;
Being used for is D by three groups of electrical quantitys
1iand D
2i, D
3iand D
4i, D
5iand D
6iafter record, storage and logical judgment, statistical analysis becomes the spectrum analyzer 50 of bio-impedance spectral curve.Wherein record, store three groups of electrical quantity D of gained
1iand D
2i, D
3iand D
4i, D
5iand D
6ispecifically as shown in rear table 1.
Fully contact and the accuracy of image data in order to make described probe and to measure tissue, the surface of described electrode flushes with described real estate respectively, and between adjacent electrode, spacing is equal.The interelectrode angle of circumference being oppositely arranged is in the present embodiment 180 °, so that image data better.
Measuring system based on six electrode measurement probes described in the utility model, by encouraging between the electrode being oppositely arranged, obtains three groups of electrical quantity data; In addition by driving source to the different frequency of probe, obtain multiple three groups of electrical quantity data, draw the bio-impedance line chart of setting a song to music of measuring tissue by spectrum analyzer analysis, thereby confirm more exactly the boundary of the inhomogeneity biological tissue of human or animal body, be also convenient to pathology biological tissue to diagnose.Also by many group image data mutually relatively or reference, to avoid because of the impact because of structural uneven, contact impedance that Acidity of Aikalinity does not produce on an equal basis.
Therefore, measuring system acquisition means described in the utility model is various, and the data of organizing for collection measurement more comprehensively, can reduce significantly the impact of the interference factor of environmental condition, operating process etc. in actual clinical, draws in real time measured organization's intersection.
Thus, the using method brief description of the measuring system of the biological impedance probe based on spectral characteristic described in the utility model is as follows:
The first step: measuring probe is put to 10 and be placed in biological tissue, and face contact each other;
Second step: be f in test frequency scope
m～f
nbetween choose N frequency, and to choose frequency be f
i∈ [f
m, f
n] driving source 30, wherein i=1,2,3 ... N, f
m<f
n;
The 3rd step: f in the time of i=1
i=f
1, controlling frequency by multiselect switching system 20 is f
1driving source 30 respectively successively between the first electrode 12 being oppositely arranged and the 4th electrode 15, between the second electrode 13 and the 5th electrode 16 and excitation between third electrode 14 and the 6th electrode 17;
The 4th step: distinguish the first electrical quantity D between corresponding collection the second electrode 13 and third electrode 14 by signal acquisition circuit
1iwith the second electrical quantity D between the 5th electrode 16 and the 6th electrode 17
2i, the 3rd electrical quantity D between third electrode 14 and the 4th electrode 15
3iwith the 4th electrical quantity D between the first electrode 12 and the 6th electrode 17
4i, the 5th electrical quantity D between the 4th electrode 15 and the 5th electrode 16
5iwith the 6th electrical quantity D between the first electrode 12 and the second electrode 13
6i;
The 5th step: store and record three groups of electrical quantitys of gained, and be respectively D
1iand D
2i, D
3iand D
4i, D
5iand D
6i;
The 6th step: in the time of i≤N, i=i+1 repeating step S3 be to step S5, thereby obtain the image data of adding up as shown in table 1 below.
Table 1 is N different frequent points f
ithree groups of electrical quantity (D of three kinds of drainage pattern gained of driving source excitation
1iand D
2i, D
3iand D
4i, D
5iand D
6i) image data statistical table
The 7th step: by the N of measured gained the first electrical quantity D
1iwith N the second electrical quantity D
2i, N the 3rd electrical quantity D
3iwith N the 4th electrical quantity D
4iand N the 5th electrical quantity D
5iwith N the 6th electrical quantity D
6istatistical analysis obtains three pairs of bio-impedance spectral curves.
Wherein N different frequent points f
iunder, three kinds of acquisition modes that encourage between the electrode being oppositely arranged are as follows:
In the time encouraging between the first electrode 12 and the 4th electrode 15, record N the first electrical quantity D between the second electrode 13 and third electrode 14
1istatistical analysis obtains curve a, also records N the second electrical quantity D between the 5th electrode 16 and the 6th electrode 17
2istatistical analysis obtains curve b, thereby curve a and curve b form first pair of bio-impedance spectral curve;
In the time encouraging between the second electrode 13 and the 5th electrode 16, record N the 3rd electrical quantity D between third electrode 14 and the 4th electrode 15
3istatistical analysis obtains curve c, also records N the 4th electrical quantity D between the first electrode 12 and the 6th electrode 17
4istatistical analysis obtains curve d, thereby curve c and curve d form second pair of bio-impedance spectral curve;
In the time encouraging between third electrode 14 and the 6th electrode 17, record N the 5th electrical quantity D between the 4th electrode 15 and the 5th electrode 16
5istatistical analysis obtains curve e, also records N the 6th electrical quantity D between the first electrode 12 and the second electrode 13
6istatistical analysis obtains curve f, thereby curve e and curve f form the 3rd pair of bio-impedance spectral curve.
S8: use weighting method to the analysis of three pairs of bio-impedance spectral curves and determine that whether measuring probe is in inhomogeneity biological tissue intersection.
Shown in Fig. 2, when described measuring probe contacts in Q1 state with inhomogeneity biological tissue, obtain three pairs of bio-impedance spectral curves as shown in Figure 6 through said method the data obtained statistical analysis.Wherein shape and the variation tendency of curve a and curve b are different, shape and the variation tendency of curve c and curve d are different, shape and the variation tendency of curve e and curve f are different, thereby can show that inhomogeneity biological tissue intersection is located on or near the center in described measuring probe.
Shown in Fig. 3, when described measuring probe contacts in Q2 state with inhomogeneity biological tissue, obtain three pairs of bio-impedance spectral curves as shown in Figure 7 through said method the data obtained statistical analysis.Wherein shape and the variation tendency of curve a and curve b are identical, shape and the variation tendency of curve c and curve d are different, shape and the variation tendency of curve e and curve f are different, thereby can draw center or the boundary position of inhomogeneity biological tissue intersection away from described measuring probe.
Shown in Fig. 4, when described measuring probe contacts in Q3 state with inhomogeneity biological tissue, obtain three pairs of bio-impedance spectral curves as shown in Figure 8 through said method the data obtained statistical analysis.Wherein shape and the variation tendency of curve a and curve b are different, shape and the variation tendency of curve c and curve d are different, shape and the variation tendency of curve e and curve f are different, but shape and the variation tendency of two pairs of bio-impedance spectral curves of curve a, b and curve e, f are identical, thereby can show that inhomogeneity biological tissue intersection is located on or near the boundary position in described measuring probe.
As shown in Figure 9, measuring probe described in the utility model is positioned in similar biological tissue, and the shape of the bio-impedance spectral curve of this curve a, b, c, d, e and f and variation tendency all should be identical.
Although shown in above-mentioned Fig. 6,7 and 8, situation is also perfect condition, and in fact can have some differences, but the basic meeting of its shape and variation tendency is consistent.Therefore, this utility model can adopt weighting method to analyze three pairs of bio-impedance spectral curves, makes a concrete analysis of as follows:
When having at least the bio-impedance spectral curve of two pairs not identical in three pairs of bio-impedance spectral curves, that is to say when weight is not less than 50%, can determine that described measuring probe is positioned at human or animal body inhomogeneity biological tissue intersection.For example: shape and the variation tendency of curve a and curve b are basic identical, and the shape of curve c and curve b and variation tendency are not identical, and shape and the variation tendency of curve e and curve d are not identical.Or shape and the variation tendency of curve a and curve b, curve c and curve b, curve e and curve d are not identical.
In the time having at least the bio-impedance spectral curve of two pairs identical in three pairs of bio-impedance spectral curves, that is to say when weight is not less than 50%, can determine that described measuring probe is positioned at the similar biological tissue of human or animal body intersection.For example: shape and the variation tendency of curve a and curve b are not identical, and shape and the variation tendency of curve c and curve b are basic identical, and shape and the variation tendency of curve e and curve d are basic identical.Or shape and the variation tendency of curve a and curve b, curve c and curve b, curve e and curve d are basic identical.
Thus, known by method provided by the utility model, Fig. 6,7 and 8 is depicted as described probe and is positioned over human or animal body inhomogeneity tissue boundary; And Figure 9 shows that described probe is positioned over the similar tissue boundary of human or animal body.Method provided by the utility model not only acquired signal more accurately but also can effectively reduce probe and the impact of organizing the contact impedance contacting, and is conducive to accurately confirm whether probe is positioned over inhomogeneity biological tissue intersection.
Upper content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (6)
1. the biological impedance probe based on spectral characteristic, it is characterized in that, comprise at least six electrodes of substrate and the described substrate of embedding, described six electrodes are the first electrode, the second electrode, third electrode, the 4th electrode, the 5th electrode and the 6th electrode, wherein the first electrode and the 4th electrode or/and the second electrode and the 5th electrode or/and third electrode and the 6th electrode be oppositely arranged, and be oppositely arranged between electrode and encouraging arbitrarily, described electrode is circumference array and distributes and have two electrode pairs axisymmetricly at least on substrate.
2. biological impedance probe according to claim 1, is characterized in that, the surface of described electrode flushes with described real estate respectively, and between adjacent electrode, spacing equates.
3. biological impedance probe according to claim 1, is characterized in that, described in the interelectrode angle of circumference that is oppositely arranged be 180 °.
4. the bio-impedance testing system based on spectral characteristic, is characterized in that, described measuring system comprises:
Probe, described probe comprises substrate and embeds at least six electrodes of described substrate, described six electrodes are the first electrode, the second electrode, third electrode, the 4th electrode, the 5th electrode and the 6th electrode, and described electrode is circumference array and distributes and have two electrode pairs axisymmetricly at least on substrate;
For between the first electrode and the 4th electrode that are oppositely arranged, between the second electrode and the 5th electrode and N the different frequent points f encouraging between third electrode and the 6th electrode
idriving source, wherein i=1,2,3 ... N;
Be used for measuring the first electrical quantity D between the second electrode and third electrode
1iand the 5th the second electrical quantity D between electrode and the 6th electrode
2i, the 3rd electrical quantity D between third electrode and the 4th electrode
3iand first the 4th electrical quantity D between electrode and the 6th electrode
4i, the 5th electrical quantity D between the 4th electrode and the 5th electrode
5iand first the 6th electrical quantity D between electrode and the second electrode
6isignal acquisition circuit;
The multiselect switching system of at least six electrodes and driving source, signal acquisition circuit break-make described in control;
Being used for is D by three groups of electrical quantitys
1iand D
2i, D
3iand D
4i, D
5iand D
6iafter record, storage and logical judgment, statistical analysis becomes the spectrum analyzer of bio-impedance spectral curve.
5. measuring system according to claim 4, is characterized in that, the surface of described electrode flushes with described real estate respectively, and between adjacent electrode, spacing equates.
6. measuring system according to claim 4, is characterized in that, described in the interelectrode angle of circumference that is oppositely arranged be 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161751.7U CN204016288U (en) | 2014-04-03 | 2014-04-03 | Biological impedance probe and measuring system based on spectral characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161751.7U CN204016288U (en) | 2014-04-03 | 2014-04-03 | Biological impedance probe and measuring system based on spectral characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204016288U true CN204016288U (en) | 2014-12-17 |
Family
ID=52056215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420161751.7U Expired - Fee Related CN204016288U (en) | 2014-04-03 | 2014-04-03 | Biological impedance probe and measuring system based on spectral characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204016288U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103876738A (en) * | 2014-04-03 | 2014-06-25 | 思澜科技（成都）有限公司 | Biological impedance measurement probe, measuring system and method based on spectral characteristic |
| CN108042134A (en) * | 2018-01-12 | 2018-05-18 | 思澜科技（成都）有限公司 | A kind of probe and system for bio-electrical impedance test |
-
2014
- 2014-04-03 CN CN201420161751.7U patent/CN204016288U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103876738A (en) * | 2014-04-03 | 2014-06-25 | 思澜科技（成都）有限公司 | Biological impedance measurement probe, measuring system and method based on spectral characteristic |
| WO2015149622A1 (en) * | 2014-04-03 | 2015-10-08 | 思澜科技（成都）有限公司 | Biological impedance measurement probe, measurement system and method based on spectral characteristic |
| CN103876738B (en) * | 2014-04-03 | 2016-03-09 | 思澜科技（成都）有限公司 | Based on the biological impedance probe of spectral characteristic, measuring system and method |
| CN108042134A (en) * | 2018-01-12 | 2018-05-18 | 思澜科技（成都）有限公司 | A kind of probe and system for bio-electrical impedance test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103876738B (en) | Based on the biological impedance probe of spectral characteristic, measuring system and method | |
| Yasin et al. | Evaluation of EIT system performance | |
| CN106618569A (en) | Measuring device and method for contact impedance between electrodes and skin | |
| CN102445574B (en) | Annular arrangement type multi-needle biological tissue dielectric spectrum characteristic measuring probe and method | |
| CN201341881Y (en) | Bio-electrical impedance imaging device for 128 passage | |
| US11617518B2 (en) | Method for detecting both pre-cancerous and cancerous tissues | |
| CN204016288U (en) | Biological impedance probe and measuring system based on spectral characteristic | |
| CN108714027A (en) | A kind of device and measurement method for measuring multi-electrode/scalp contact impedance in real time | |
| WO2016206599A1 (en) | Array bioimpedance measurement probe for tissue and measurement method thereof | |
| CN104062503B (en) | Data acquisition device for tissues in vitro impedance bioelectrical measurement | |
| CN102379697A (en) | Detection device and calibration method for scanning and imaging pre-signal conditioning module by electrical impedance | |
| CN103654777B (en) | Measure the device of organism electrical impedance | |
| CN103584866B (en) | A kind of tidal volume monitoring method based on twin-channel bio-electrical impedance and device | |
| Lee et al. | Mathematical framework for a new microscopic electrical impedance tomography system | |
| Meroni et al. | Measurement of electrical impedance in different ex-vivo tissues | |
| CN209770372U (en) | Device for measuring extracellular fluid electrical impedance and total moisture electrical impedance | |
| CN104083169B (en) | BIS system Authentication method based on uniform impedance model | |
| EP3651641B1 (en) | System for measuring the electrical impedance in human tissues | |
| CN110664411A (en) | Stoma assessment ruler and stoma assessment kit | |
| CN203953659U (en) | A kind of complex impedance circuit board for bio-impedance spectrum systems | |
| Skourou et al. | In vivo EIS characterization of tumour tissue properties is dominated by excess extracellular fluid | |
| CN203609417U (en) | Probe needle, probe and device for measuring electrical impedance of living organism | |
| CN103015974A (en) | Measuring probe of oil-base mud logger | |
| CN203688668U (en) | Data acquiring device for measuring electrical impedance of in-vitro biological tissue | |
| CN204863186U (en) | Array biological tissue impedance accuracy of measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20160403 |