CN103989475B - Electrode fixing device for electrical impedance tomography - Google Patents

Electrode fixing device for electrical impedance tomography Download PDF

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Publication number
CN103989475B
CN103989475B CN201410196806.2A CN201410196806A CN103989475B CN 103989475 B CN103989475 B CN 103989475B CN 201410196806 A CN201410196806 A CN 201410196806A CN 103989475 B CN103989475 B CN 103989475B
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China
Prior art keywords
electrode
fixed ring
carrier
fixing seat
support
Prior art date
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CN201410196806.2A
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Chinese (zh)
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CN103989475A (en
Inventor
向飞
王奕刚
罗旭梅
戴涛
蒲洋
徐现红
高松
卜力宁
林怡
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思澜科技(成都)有限公司
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Priority to CN201410196806.2A priority Critical patent/CN103989475B/en
Publication of CN103989475A publication Critical patent/CN103989475A/en
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Abstract

The invention belongs to the signal pickup assemblies in imaging device, a kind of electrode fixing device for electrical impedance tomography is specifically disclosed, carrier element including pilot unit and for fixing electrode, the Second support that the carrier element is included the first vector connecting with the pilot unit and is nested in outside the first vector using the pilot unit as axis.The present invention realizes measurand and multi-layered electrode face contact, every layer of electrode surface are separately adjustable and 3D is imaged, so as to accurately determine the specific location of diseased region and the size of diseased region, to guide subsequent diagnosis and treatment means.

Description

Electrode fixing device for electrical impedance tomography

Technical field

The present invention relates to the signal pickup assemblies in imaging device, and in particular to a kind of electricity for electrical impedance tomography Extremely fixed device.

Background technique

Electrical impedance tomography (Electrical Impedance Tomography, EIT) is with electrical impedance in objective body Distribution or variation be imaging object a kind of novel imaging technique.The technology is noninvasive to human body harmless, and system structure is simple, surveys Amount is easy, before the realtime graphic monitoring and cancer inspection and screening etc. long-term to patient have a wide range of applications Scape.Existing EIT imaging is generally by by the electrode injection exciting current around imageable target, and synchro measure imageable target boundary On response voltage, impedance bioelectrical measurement is realized using more drivings/measuring electrode structure, using image reconstruction algorithm to phase demodulation The transforming impedance data that technology obtains are reconstructed, and form electrical impedance tomography image.Therefore, the signal of electrical impedance tomography is adopted Collection end is generally used by ten several electrod-arrays formed to dozens of electrode.

Since electrical impedance tomography electrode used therein array is usually located at the front end of measuring system in the prior art, directly Contact human body.The event occurred on the electrode, including useful information, noise, artifact, contact impedance, polarizing voltage etc., all can be into Enter subsequent conditioning circuit to be amplified, transmit, participates in signal processing, influence image reconstructed results.Number of electrodes, structure and its performance are for electricity Effective extraction of impedance tomography front-end information directly affects, and fixes electrode properly in electrode and quilt It is also of equal importance to survey the good contact of formation between object.Although also proposed the skill of the device of some fixed electrodes in the prior art Art scheme, but usually only realize the contact of single-layer electrodes, there is certain limitation;Therefore it cannot achieve the imaging effect of 3D, To determine the specific location and transversal diameter of diseased region.

Summary of the invention

In view of the deficiency of the prior art, the object of the present invention is to provide a kind of realization measurands and multilayer electricity The electrode fixing device for electrical impedance tomography that pole-face contacts and every layer of electrode surface is separately adjustable.

To achieve the goals above, the technical solution adopted in the present invention is as follows:

A kind of electrode fixing device for electrical impedance tomography, the carrier including pilot unit and for fixing electrode Unit, the carrier element include the first vector connecting with the pilot unit and are nested in institute by axis of the pilot unit State the Second support outside first vector.

Preferably, the first vector includes the first fixed ring, the first connecting column and the first fixing seat, first connection Column is for connecting first fixed ring and first fixing seat.

Preferably, the Second support include the second fixed ring, the second fixing seat, for be fixedly connected the second fixed ring and The second connecting column and the first auxiliary device of second fixing seat;Second fixing seat is equipped with the first pilot hole, and described first is auxiliary It helps device to be fixedly connected with the second fixing seat and is located on the outside of the Second support.

Preferably, the carrier element further includes the third carrier being nested in outside Second support using pilot unit as axis.

Further, the third carrier includes third fixed ring, third fixing seat, for being fixedly connected with third fixed ring With the third connecting column and the second auxiliary device of third fixing seat;The third fixing seat be equipped with the second pilot hole, described second Auxiliary device is fixedly connected with third fixing seat and is located on the outside of the third carrier.

Further, the fixed ring surface of first fixed ring, the second fixed ring and third is respectively equipped with circle distribution Several electrode holes, and between adjacent carrier be equipped with gap.

Further, the pilot unit pass through the pilot hole of Second support and third carrier with fix Second support and The glide direction of third carrier.

Further, first auxiliary device and the second auxiliary device respectively include the attachment base equipped with fixation hole With the push rod being threadedly coupled by the fixation hole with the attachment base.

Further, the electrode hole on the first electrode ring, second electrode ring and third electrode retaining collar linearly or Staggered cross array arrangement.

Further, the pilot unit, the first auxiliary device and the second auxiliary device are done work by human body or machinery is dynamic Power is respectively that first vector, Second support and third carrier provide operation power source.

After adopting the above structure, advantage for present invention is:

1, the present invention solves the limitation that existing test device can only realize the contact of single-layer electrodes, passes through phase between carrier Mutually nested relationship, the data that acquisition electrode is fixed on the device to the contact for being able to achieve multi-layered electrode face and acquisition are more smart Really.

2, the present invention solves the imaging effect that cannot achieve 3D in the prior art and leads to not determine diseased region Specific location and transversal diameter, and the device can be used for 3D imaging mode, can accurately determine diseased region specific location and The size of diseased region, to guide subsequent diagnosis and treatment means.

3, technical solutions according to the invention are able to achieve the independence lift adjustment of each carrier, especially during diagnosis Adapt to the diversity variation of different size breast.

Detailed description of the invention

Present invention will be further explained below with reference to the attached drawings and examples.

Fig. 1 is the fractionation structural representation of electrode fixing device described in the embodiment of the present invention one.

Fig. 2 is the assembly structure diagram of electrode fixing device described in the embodiment of the present invention one.

Fig. 3 is electrode retaining collar top electrode pore size distribution schematic diagram described in the embodiment of the present invention one.

Fig. 4 is the fractionation structural representation of electrode fixing device described in the embodiment of the present invention two.

Fig. 5 is the assembly structure diagram of electrode fixing device described in the embodiment of the present invention two.

Fig. 6 is electrode retaining collar top electrode pore size distribution schematic diagram described in the embodiment of the present invention two.

Appended drawing reference:

10- pilot unit, 11- guide plate, 12- groove, 20- first vector, 21- first electrode ring, 211- electrode hole, The first connecting column of 22-, the first fixing seat of 23-, 30- Second support, 31- second electrode ring, 311- electrode hole, the connection of 32- second Column, the second fixing seat of 33-, the first pilot hole of 331-, the first auxiliary device of 34-, 40- third carrier, 41- third electrode retaining collar, 411- electrode hole, 42- third connecting column, 43- third fixing seat, the second pilot hole of 431-, the second auxiliary device of 44-.

Specific embodiment

As described below is only presently preferred embodiments of the present invention, is not intended to limit the scope of the present invention.

Embodiment one:

As depicted in figs. 1 and 2, a kind of electrode fixing device for electrical impedance tomography is present embodiments provided, it should Device includes pilot unit 10 and the carrier element for fixing electrode, and the carrier element includes connecting with the pilot unit 10 The first vector 20 that connects and be the Second support 30 that axis is nested in outside the first vector 20 with the pilot unit 10.

The first vector 20 includes the first fixed ring 21, the first connecting column 22 and the first fixing seat 23.Described first connects Column 22 is connect to be used to connect first fixed ring 21 and first fixing seat 23, in the present embodiment, four the first connecting columns 22 both ends are located in the first fixing seat 23 and the first fixed ring 21 in equidistant circle distribution.Wherein the first fixing seat 23 with Pilot unit 10 is fixedly connected, and first electrode ring 21 is equipped with several electrode holes 211 of equidistant circle distribution.It is done when by human body Function or machine power act on after pilot unit 10 makes first vector 20 move to and come into full contact with measurand, then pass through locking Device (not shown) is fixed by pilot unit 10.

The Second support 30 includes the second fixed ring 31, the second fixing seat 33, for being fixedly connected with the second fixed ring 31 With the second connecting column 32 and the first auxiliary device 34 of the second fixing seat 33.Second fixing seat 33 is equipped with to pass right through and lead To the first pilot hole 331 of unit 10, second electrode ring 31 is equipped with several electrode holes 311 away from week distribution.Therefore, this implementation Pilot unit 10 described in example passes through the first pilot hole 331 of Second support 30 to fix the glide direction of Second support 30.This Embodiment considers that first auxiliary device 34 is located at outside the Second support 30 convenient for providing power source for Second support 30 Side is simultaneously fixedly connected with the second fixing seat 33.First auxiliary device 34 include equipped with fixation hole attachment base (not shown) and The push rod (not shown) being threadedly coupled by the fixation hole with the attachment base.Therefore, when dynamic by human body acting or machinery After the push rod that power acts on the first auxiliary device 34 makes Second support 30 move to and come into full contact with measurand, then pass through rotation Fixation hole screw thread on push rod and attachment base locks pilot unit 10.In the present embodiment, electrode hole can also according to actual needs Equidistant circle distribution is not used.

Since pilot unit 10 is the guide plate 11 that two sides are equipped with groove 12, that is, the cross-sectional shape of the guide plate 11 Approximate in the shape of an " I ", to prevent 30 left-right rotation of Second support, but in addition to this, the cross-sectional shape of guide plate 11 can be with For " convex ", " ten " or " Z " font etc., herein not as restrictive condition of the invention.As shown in figure 3, being located at the first electrode The linear array arrangement of electrode hole 311 on the electrode hole 211 and second electrode ring 31 of ring 21.First vector 20 and Second support Gap is equipped between 30, to guarantee that first vector 20 and Second support 30 can be moved individually.In addition, being in the present embodiment Guarantee to use insulated contact with fixed electrode insulation, the first electrode ring 21 and second electrode ring 31.

Embodiment two:

As shown in Figure 4 and Figure 5, electrode fixing device described in the present embodiment and electrode fixing device described in the present embodiment one Maximum difference is: the carrier element further includes the third carrier being nested in pilot unit 10 for axis outside Second support 30 40。

The third carrier 40 includes third fixed ring 41, third fixing seat 43, for being fixedly connected with third fixed ring 41 With the third connecting column 41 and the second auxiliary device 44 of third fixing seat 43.The third fixing seat 43 is equipped with to pass right through and lead To the second pilot hole 431 of unit 10, third electrode retaining collar 41 is equipped with several electrode holes 411 of equidistant circle distribution.Therefore, originally Pilot unit 10 described in embodiment passes through the second pilot hole 431 of third carrier 40 to fix the sliding side of third carrier 40 To.The present embodiment considers that, convenient for providing power source for third carrier 40, second auxiliary device 44 is located at third load 40 outside of body is simultaneously fixedly connected with third fixing seat 43.Second auxiliary device 44 includes being equipped with the attachment base of fixation hole and leading to Cross the push rod that the fixation hole is threadedly coupled with the attachment base.Therefore, when acting on the by human body acting or machine power After the push rod of two auxiliary devices 44 makes third carrier 40 move to and come into full contact with measurand, then by rotating push rod with connect Fixation hole screw thread on seat locks pilot unit 10.In the present embodiment, electrode hole can not also use equidistantly according to actual needs Circle distribution.

Since pilot unit 10 is the guide plate 11 that two sides are equipped with groove 12, that is, the cross-sectional shape of the guide plate 11 It is approximate in the shape of an " I ", to prevent Second support 30,40 left-right rotation of third carrier.As shown in fig. 6, being located at the first electrode Electrode hole 411 on the electrode hole 211 of ring 21, the electrode hole 311 and third electrode retaining collar 41 on second electrode ring 31 is in dislocation It is equipped with gap between crossed array arrangement adjacent carrier, to guarantee 40 energy of first vector 20, Second support 30 and third carrier Individually move.In addition, in the present embodiment in order to guarantee and fixed electrode insulation, the first electrode ring 21, Two electrode retaining collars 31 and third electrode retaining collar 41 use insulated contact.

It can be used for breast lesion diagnosis, first vector 20, second in above-mentioned two electrode fixing devices as described in the examples The elevating movement of carrier 30 as one kind and third carrier 40 is that each carrier is adjusted according to udder size.Such as: for smaller Breast need to may only adjust the lifting of first vector 20 or first vector 20 and Second support 30, just be able to satisfy entire breast 3D imaging;And bigger breast, the different loads of first vector 20, Second support 30 and third carrier 40 or more may be adjusted The lifting of body is just able to satisfy the 3D imaging of entire breast.Therefore, electrode fixing device of the present invention is conducive to accurately sentence The specific location of diseased region and the size of diseased region are determined, to guide subsequent diagnosis and treatment means.

Upper content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, think of according to the present invention Think, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to of the invention Limitation.

Claims (10)

1. a kind of electrode fixing device for electrical impedance tomography, the load including pilot unit (10) and for fixing electrode Body unit, the carrier element include the first vector (20) connecting with the pilot unit (10) and with the pilot unit (10) Second support (30) of the first vector (20) outside is nested in for axis.
2. electrode fixing device according to claim 1, which is characterized in that the first vector (20) includes first fixed Ring (21), the first connecting column (22) and the first fixing seat (23), first connecting column (22) are fixed for connecting described first Ring (21) and first fixing seat (23).
3. electrode fixing device according to claim 2, which is characterized in that the Second support (30) includes second fixed Ring (31), the second fixing seat (33), the second connecting column for being fixedly connected with the second fixed ring (31) and the second fixing seat (33) (31) and the first auxiliary device (34);Second fixing seat (33) is equipped with the first pilot hole (331), first auxiliary device (34) it is located on the outside of the Second support (30) and is fixedly connected with the second fixing seat (33).
4. electrode fixing device according to claim 3, which is characterized in that the carrier element further includes with pilot unit (10) the third carrier (40) of Second support (30) outside is nested in for axis.
5. electrode fixing device according to claim 4, which is characterized in that the third carrier (40) includes that third is fixed Ring (41), third fixing seat (43), the third connecting column for being fixedly connected with third fixed ring (41) and third fixing seat (43) (42) and the second auxiliary device (44);The third fixing seat (43) is equipped with the second pilot hole (431), second auxiliary device (44) it is located on the outside of the third carrier (40) and is fixedly connected with third fixing seat (43).
6. electrode fixing device according to claim 5, which is characterized in that first fixed ring (21), second are fixed Ring (31) and third fixed ring (41) surface are respectively equipped with several electrode holes (211,311,411) of circle distribution, and adjacent Gap is equipped between carrier.
7. electrode fixing device according to claim 5, which is characterized in that the pilot unit (10) passes through Second support The glide direction of Second support and third carrier is fixed with the pilot hole of third carrier.
8. electrode fixing device according to claim 5, which is characterized in that first auxiliary device (34) and second auxiliary Device (44) is helped to respectively include the attachment base equipped with fixation hole and be threadedly coupled with the attachment base by the fixation hole Push rod.
9. electrode fixing device according to claim 6, which is characterized in that be located at first fixed ring (21), second Electrode hole (211,311,411) in fixed ring (31) and third fixed ring (41) is linearly or staggered cross array arrangement.
10. electrode fixing device according to claim 5, which is characterized in that the pilot unit (10), the first auxiliary dress It sets (34) and the second auxiliary device (44) can be done work by human body or machine power is respectively first vector (20), Second support (30) and third carrier (40) provides operation power source.
CN201410196806.2A 2014-05-09 2014-05-09 Electrode fixing device for electrical impedance tomography CN103989475B (en)

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CN201410196806.2A CN103989475B (en) 2014-05-09 2014-05-09 Electrode fixing device for electrical impedance tomography

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Application Number Priority Date Filing Date Title
CN201410196806.2A CN103989475B (en) 2014-05-09 2014-05-09 Electrode fixing device for electrical impedance tomography

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CN103989475B true CN103989475B (en) 2019-01-22

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957037A (en) * 1975-02-24 1976-05-18 Nasa Readout electrode assembly for measuring biological impedance
DE19615933A1 (en) * 1996-04-22 1997-10-23 Novocontrol Gmbh Characteristic values of dielectric measuring device also through and surface resistance on plate-type sample bodies
CN1376444A (en) * 2001-03-26 2002-10-30 张大衡 Acupoint searching circuit and electrotherapeutic apapratus
CN1592596A (en) * 2000-12-28 2005-03-09 Z-技术加拿大公司 Electrical impedance method and apparatus for detecting and diagnosing diseases
CN102359979A (en) * 2011-06-22 2012-02-22 天津大学 Resistance chromatographic data acquisition sensor with built-in rotary electrodes
CN102440775A (en) * 2011-09-23 2012-05-09 中国人民解放军第四军医大学 Biological tissue dielectric property measuring electrode

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957037A (en) * 1975-02-24 1976-05-18 Nasa Readout electrode assembly for measuring biological impedance
DE19615933A1 (en) * 1996-04-22 1997-10-23 Novocontrol Gmbh Characteristic values of dielectric measuring device also through and surface resistance on plate-type sample bodies
CN1592596A (en) * 2000-12-28 2005-03-09 Z-技术加拿大公司 Electrical impedance method and apparatus for detecting and diagnosing diseases
CN1376444A (en) * 2001-03-26 2002-10-30 张大衡 Acupoint searching circuit and electrotherapeutic apapratus
CN102359979A (en) * 2011-06-22 2012-02-22 天津大学 Resistance chromatographic data acquisition sensor with built-in rotary electrodes
CN102440775A (en) * 2011-09-23 2012-05-09 中国人民解放军第四军医大学 Biological tissue dielectric property measuring electrode

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