CN101340847A - Electrode assembly for electrical impedance tomography - Google Patents
Electrode assembly for electrical impedance tomography Download PDFInfo
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- CN101340847A CN101340847A CNA2006800483848A CN200680048384A CN101340847A CN 101340847 A CN101340847 A CN 101340847A CN A2006800483848 A CNA2006800483848 A CN A2006800483848A CN 200680048384 A CN200680048384 A CN 200680048384A CN 101340847 A CN101340847 A CN 101340847A
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- 238000002593 electrical impedance tomography Methods 0.000 title claims abstract description 20
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Abstract
An electrode assembly for electrical impedance tomography comprising a plurality of different electrode modules (10), each containing a support strap (11) made of a flexible material that presents a reduced longitudinal deformability and carrying a predetermined number of electrodes (20), each support strap (11) being dimensioned to be seated and retained onto a respective extension portion of a body segment (C) of a patient. Each electrode module (10) presents the number of electrodes (20) and a distance 'De' between each two consecutive electrodes (20) predetermined as a function of a specific operational pattern to be obtained from each electrode module (10). The assembly can further comprise an electrical conducting cable (30) having an end connected to a monitoring apparatus (M) and a free end provided with a connector (33) to be coupled to a respective electrode (20) of an electrode module (10).
Description
Technical field
Providing of electrode module is provided, and each electrode module comprises body section a plurality of electrodes on every side of waiting to be applied to human patients or animal, so that carry out electrical impedance tomography (EIT).
Background technology
Electrical impedance tomography (EIT) allows to show and monitor by the electromotive force of the cross section of catching human body parts the cross section of this human body parts.Electric current around the surface is transmitted in the body with rotation mode, produces the gradient of electromotive force from the teeth outwards.The electrical impedance distribution of measuring in body part is converted into two dimensional image by means of image reconstruction algorithm.Owing to this reason, EIT has very big potentiality to be used for medical domain, for example in needs of patients ventilation or meet with an accident, under the situation of damage etc., the real time imaging that is mainly used in cardio-pulmonary function shows.
The principle of typical biomedical EIT device utilization is to place a plurality of electrodes that separate equidistantly, and described electrode centers on a part of health fully.Usually, in this surveillance, must accurately place 16 to 32 electrodes around required surface.Owing to need the use of a plurality of electrodes, therefore be difficult to mainly accurately place electrode seriatim around health with isometric form with in identical cross-section.In addition, above-mentioned be need the time, attention and skilled person's arduous process.
The solution utilization of above problem has the elastic webbing of electrode.The basic thought of electrode band is that a plurality of electrodes are installed in the elastomeric material.Like this, electrode around the placement of health can be fast and the while elastomeric material distance electrode can be provided etc.Yet, be difficult to by using elastomeric material to guarantee the equidistant position of electrode.In addition, for fear of moving on health at the data acquisition period electrode, this band must tightly be placed on the required surface.Therefore, this elastic force that puts on the surface of chest can cause cicatrix and make dyspnea.For example because the existence of several chest girths, for the fully fixing several marks cun of must providing, this has produced expensive stock and big stock's necessity.Another problem is the existence owing to different chest anatomical structures, generating electrodes and the outside bad probability that contacts of being observed health, and this problem can not be resolved by using elastomeric material.Such difference takes place according to patient's sex and myoarchitecture, for example, have pectoralis major the male patient since the myoarchitecture of back in the centre of breast with have depression in the centre of back similarly; In the women, relate generally to the anatomical variations that different udder sizes has chest.
Current EIT system can not monitor the situation of the discontinuity of the electrode wires that need center on chest, or do not allow electrode to center on the situation of health fully, the postoperative period of operation on heart for example, the damage that causes by side-arm or firearm, burn, in hemorrhage district because the skin injury that dermatosis or infectious disease cause, or can't be near the situation of the part of health, for example work as the victim and fall into the scene of the accident or damaged spinal cord, make to be difficult to carry out even hinder his/her and move.
And the standing state of this area does not allow to optimize image definition and the definition in the zone of concern.For example, U.S. Patent application 2004/0260167A1 has described a kind of can passing through and has connected the electrode elastic that the band section forms, and described band section has the electrode of the equal number that can separate with being equal to each other.According to the instruction of above document, be connected to form the advantage that electrode band has with a plurality of interconnection band sections and be, be applied to fast and easily the unconscious or irremovable patient except causing electrode, reduced the quantity of the conductive cable arranged along band.
Although the advantage that reduces along the extension of electrode band relevant for the convenience of using and conductive cable, the scheme proposals of the prior art is fully around the distribution of electrodes of body section, makes it not to be used under the interrupted situation in electrode band must the one or more zones in the body section.
Because the structural form of electrode elastic, electrode concentrating in the specific region can not be provided, that is to say, irregular distribution of electrodes, thereby pay close attention to some zone in obtain to have the more image of fine definition, even in electrode band must the one or more zones in the body section under the interrupted situation.
Summary of the invention
The present invention has the distinct methods that solves described problem.Replace paying close attention to equidistant placement electrode and, developed a kind of EIT device, the relative position of its permission plan electrode and the information of the relative position of electrode is provided fully around mode by the object of the body paragraph qualification of human patients or animal.Therefore, except not needing to place the electrode, be used under the electrode of this device permission variable number and the use of spacing and it can also have discontinuity in electrode wires the situation around the whole exterior contour of just analyzed body section.
Main purpose of the present invention provides a kind of electrode assemblie of modular arrangement, and this electrode assemblie can be applied to different chest shape and girth, for example ewborn infant, child, adult and animal with accurate way with practical.
Another object of the present invention provides a kind of electrode assemblie of aforesaid modular arrangement, and it has the few parts of the diversified morphological feature that can cover body section to be analyzed.
Therefore, the minimizing of the cost of stock and operation becomes easier.And the electrode failure in the band need be replaced entire belt; Under the situation of modular arrangement, only replace wearing and tearing or defective module.
A further object of the invention provides a kind of aforesaid electrode assemblie, this electrode assemblie allows definition and the quality by the image in the zone of paying close attention to respect to the zone location electrode maximization of paying close attention to, for example: heart, a left side or right lung, infected part etc.
Further purpose of the present invention provides a kind of aforesaid electrode assemblie, that this electrode assemblie allows is practical, accurately and fast use, even for example because under contingency, damage, wound or the peripheral bound situation of operation near body section to be analyzed.
According to the present invention, a kind of electrode assemblie comprises a plurality of different electrode modules, each electrode module comprises the bracing strip of being made by flexible material, described bracing strip has vertical deformability that reduces and the electrode that has the requirement that will be electrically connected to monitoring arrangement, one in the described module comprises at least two electrodes, the corresponding bracing strip size of each electrode module is made for settles and remains on the corresponding extension of body section to be analyzed, according to the plane of the concern of transversal described body section, different electrode modules all have according to the quantity of the predetermined electrode of certain operational modes that will obtain from each electrode module and the distance between per two continuous electrodes.
In one embodiment, each electrode of electrode module is electrically connected to monitoring arrangement by means of conductive cable.
According to the present invention, each electrode module comprises the electrode of some, described arrangement of electrodes becomes between per two continuous electrodes to have the spacing that can have identical value or different value, thereby allow some modules to have the electrode that equally separates to aligned module along central longitudinal, and other electrode module have in one or more zones of module and to concentrate and dispersive electrode in other zone.
The structure of the quantity about the respective support band, layout and extension that module exists changes and allows to have appropriate module with each zone of the body section that is used for the patient be used for this or that required readability in zone.
For example, place under the situation of electrode module in can not the zone at right breast, the possible scheme that addresses this problem can be that the module that will have 8 electrodes is placed on the left breast and the module that will have 12 electrodes is installed on patient's the back.
Electrode assemblie of the present invention is developed to be applied to a kind of EIT system, and this optimum system choosing ground utilizes the image reconstruction algorithm that is similar to the finite elements net operation, thus will be by increasing near the quantity optimization of the electrode of the desired zone image definition by the EIT generation.On the other hand, the quantity of electrode is few more, and the image definition of generation will be low more.
Therefore, the combination of disparate modules allow the EIT system under the situation of lung fault imaging with more accurate, practical and fast mode be used for any girth of patient, ewborn infant and adult, with be used for any chest shape, not only be used for the women but also be used for the male, with be used for different clinical scenarios, even need those situations of interfere with electrode line.
For the proper operation of EIT device is provided, must offer the information of described EIT device about the position of electrode, it can or be present in the identification code in each electrode module and obtain electronically by these identification codes and their combination of respective distance by algorithm.For this reason, each electrode module can have the equipment that is used to provide and indicate accurate spacing and identification code.
If present, spacing equipment can comprise the material that has distance scale that is installed in module one end.Then, distance between electrodes will be informed by the indicated value of spacing system.This spacing system is practicality and the simple tools that allows the correct spacing of electrode module.Can make the variable-resistance more complicated system that has that is installed in the spacing equipment.Because variable resistance has the specific ohmic value that is used for each distance, so distance between electrodes will determine that it can inform surveillance by electrode self by the value of this resistance.
Identification code provides the information of electrode module feature by numeral or bar code, and described feature for example comprises: the distance between electrodes of each module, and module size, whether the arrangement of electrodes in the module (whether concentrating) equates with distance between electrodes.
Therefore, these two instruments are feasible at last can inform that surveillance is about the accurate position of each electrode with respect to the reference point on the just checked health.
The operation of image reconstruction algorithm can be based on the finite element grid that is particularly suitable for every kind of situation.
One of the aspect that relates to the operation of electrode assemblie of the present invention relates to the insertion of actual electrode arrangement in algorithm for reconstructing, and described layout is two dimension or three-dimensional.Except classical back-projection algorithm, most image reconstruction algorithms are by the finite element grid modeling plane of representative body section to be studied.The position of measurement electrode that is the existing information of model must be identified.Aspect based on the concern of the model of finite element grid is only to inform distance between electrodes, and is not necessarily identical between all electrodes.
The application of the electrode of bigger quantity allows to obtain the independent measurement of bigger quantity, causes the spatial resolution of image to increase, and it is correct that this proof is utilized more advanced finite element grid.As a part of the present invention, can expect by selecting only electrode module to place the modularity electrode of greater number near the zone of paying close attention to.
For example, if formerly be cardiac monitoring, can use electrode work immediately following the bigger quantity after the breastbone, and in other space plane, also increase described quantity, thereby obtain three information in the Spatial Dimension, it allows the better assessment (the systole volume in each cardiac cycle) of volume calculation.
The aspect of other concern is only to place electrode in the positive zone of chest, and under the situation of urgent or wound, when the patient can not move, under the danger that existing bone marrow injury worsens, this program is useful.
Description of drawings
Below with reference to the accompanying drawing that the example as possibility embodiment of the present invention provides the present invention is described, wherein:
Fig. 1 a, 1b and 1c show the schematic lower plan view of the electrode module of three different lengths, and described electrode module has the electrode of equal number, and electrode equally separates each other in each module, but each module has different and specific distance;
Fig. 2 a and 2b show the schematic lower plan view of two electrode modules, and described electrode module has identical length, but comprise the electrode of varying number;
Fig. 3 a and 3b show the schematic lower plan view of two electrode modules, and described electrode module has different length and have the electrode of varying number in they each, but the electrode of two modules equally separates identical distance;
Fig. 4 has described vertically to connect each other the schematic lower plan view with two electrode modules that form the electrode band extension;
Fig. 5 a and 5b show the schematic lower plan view of two electrode modules, and described electrode module has the identical length and the electrode of equal number, but the latter arranges by different way about the distribution along bracing strip;
Fig. 6 a and 6b have described to have the schematic lower plan view of two different layouts of the conductive cable of respective end adapter;
Fig. 7 has described to have the perspective schematic view of another layout of the conductive cable of respective end adapter;
Fig. 8 has described the front view of the patient's that a plurality of electrode was applied to trunk, the distance that described electrode separates can be along the profile variations of body section, in the positive zone of the chest that damage is arranged, be provided with the interruption of the sequence of electrode module, described interruption limit contiguous described interruption and belong between two electrodes that separate module certain interrupt distance;
The simplification cross-sectional view of the body trunk shown in Fig. 8 that Fig. 8 a has described to obtain according to the line A-A among Fig. 8 the figure shows around the layout of a hentriaconta-electrode of body section;
Fig. 8 b is the view that is similar to Fig. 8, but the operation of image reconstruction algorithm based on finite element grid in schematically show the layout of electrode;
Fig. 9 a, 9b, 9c, 9d, 9e and 9f are the views that is similar to Fig. 8 a, but show the various combination that electrode module is centered around the body section shown in the cross section, and some modules have the electrode of equal number and the identical distance between the electrode; With
Figure 10 has described the plane graph of bracing strip extension, and described bracing strip extension has according to central longitudinal to aiming at the hole of arranging, so electrode is installed at least one of described hole;
Figure 11 has described to be similar to the lower plan view of the bracing strip extension of Figure 10, but described bracing strip extension has connecting device and connector receiving system in its end, and also has the element that is used to keep around the electrode in the hole of bracing strip;
Figure 12 has described the diagonal section figure by the electrode of each hole installation of the bracing strip of Figure 11;
Figure 13 has described the lower plan view of the electrode of Figure 12;
Figure 14 has described to have the lower plan view of bracing strip of Figure 11 of an electrode in each hole;
Figure 15 has described to be provided with central longitudinal to aligned hole and with the perspective view of the continuous bracing strip shown in the form of the roll coil of strip;
Figure 16 has described to be used to form the perspective view of the band extension of electrode module, and described electrode module has and allows it to adapt to the structure of the longitudinal extension part of each bracing strip; With
Figure 17 has described a kind of part sectional perspective view of assembly, and this assembly comprises two bracing strips of type shown in Figure 10 and have connecting device and the end coupling receiving system, and the link block of two bracing strips that are used to interconnect.
The specific embodiment
Fig. 1 a, 1b and 1c show three electrode modules 10, and each electrode module comprises the corresponding extension of the bracing strip 11 of constructing with any suitable material, and described material has flexible, yet does not have strain at longitudinal direction.Each electrode module 10 has and is different from other electrode module 10 measured length really in described figure, each module comprises five electrodes 20 of the equal number of " De " equidistantly spaced apart each other, and described distance normally changes between described electrode module 10.
Therefore, but the electrode 20 of the bracing strip of smaller length 11 equally separates and has a kind of distribution, distributes according to this, and described electrode is more close each other with respect to the mutual spacing of the electrode 20 of other two electrode modules 10.
Fig. 2 a and 2b show two electrode modules 10 that the bracing strip 11 by equal length forms, one of them module has five electrodes 20, and another module only has three electrodes 20, and the distance that described electrode keeps each other " De " is greater than the distance that keeps between the electrode 20 of another electrode module 10.
Fig. 3 a and 3b show more two examples of the electrode module 10 of the bracing strip 11 with different length, and described electrode module 10 has electrode 20 varying number, that still equally separate.
Fig. 4 has described by vertically connecting two electrode band extensions that bracing strip 11 limits, and the size of described electrode band extension is made for the corresponding extension of the body section C that covers the patient.
As following further discussion, different electrode modules 10 are determined size according to extension, quantity and the distribution of electrode 20, to meet the different condition that is applied to health to be analyzed.Should be understood that, electrode module 10 can separate each other be employed along the same concern plane of transversal described body section C, perhaps even in parallel substantially Different Plane be employed, thereby produce the 3-D view of just analyzed body section.
Be applied under the conplane situation at electrode module 10, described electrode module 10 can be provided with positioner 12, as shown in Fig. 1 a-5b, described positioner adopt an end that is attached to bracing strip 11 extension 12a form and be provided with labelling 12b, described labelling allows to determine the spacing distance " Da " between two adjacent electrodes 20 of per two continuous electrode modules 10.Under situation about determining, different electrode modules 10 can longitudinally be connected to each other by their adjacent end portion (referring to Fig. 4).In this case.One end of each bracing strip 11 can be along the longitudinal direction in conjunction with the connecting device 14 of constructing by different way, for example band that the material of well-known " Velcro (Velcro) " is made by trade mark.The other end of each bracing strip 11 has schematically illustrated in the drawings connector receiving system 15, and this connector receiving system is configured to receive the connecting device 14 with another electrode module 10 of interlocking.Therefore, connector receiving system 15 can adopt the form of the band of being made by the jointing material of waiting to adhere to connecting device 14.
In the embodiment shown in Fig. 1 a-5b, connecting device 14 is limited in the positioner 12 self of bracing strip 11, mixes with the corresponding extension 12a of bracing strip 11.Yet, should be understood that connecting device 14 and nonessential being configured to combine with positioner 12.
As described below, each electrode module 10 can comprise individual identification codes 13 in its bracing strip 11, and this individual identification codes can adopt the form of bar code or alphanumeric identification.The longitudinal extension part that reads the permission determination module of described individual identification codes 13, the quantity of electrode 20 and electrode 20 are along the layout of the extension of bracing strip 11, reason is that being arranged in of module on each bracing strip 11 can be different between the module, as shown in Fig. 5 a and 5b.
Should be understood that, the setting of the individual identification codes 13 of bracing strip 11 is not essential, and reason is that distance " De " between the electrode 20 of quantity, each electrode module 10 of electrode and the spacing distance " Da " between per two continuous electrode modules 10 are can be before the beginning fault imaging measured and provide information to the monitoring arrangement (not shown).
Consider to can be provided in the electrode module 10 that has electrode 20 more concentrated or more dispersed placement on each bracing strip 11 that the operator can select the more distinct image with the region-of-interest of determining that body section C is provided of electrode module 10 more suitably.In the zone of not too paying close attention to, can use the electrode module 10 that has smaller amounts electrode 20, and in the zone of paying close attention to, can use the electrode module 10 of the electrode of the electrode 20 that comprises higher concentration degree even concentration of local, as shown in Fig. 5 a and 5b.According to the various combination of the quantity and the concentration degree of electrode 20, electrode module 10 can longitudinally be connected to each other or only be placed on the body section C.Bracing strip 11 is fixed on patient's the body section C and can realizes by different way being with or without under the situation that the assist location band helps.The bracing strip 11 of each electrode module 10 can be made by any suitable non-conducting material (for example adhesive-bonded fabric, foam and polymer), and these materials are given bracing strip 11 with flexible nature.
Although not diagram at length and description here, owing to be not purpose of the present invention, so each electrode 20 can be with known in the state of the art or unknown different modes structure, as long as they as exemplifying among Figure 12,13 and 14, have by seat ring 22 around and will be placed in contact portion 21 on the body section C, with the coupling part 23 that protrudes upward and be configured to receive and keep the end connector of each conductive cable 30 from bracing strip 11, described end connector is arranged to each electrode 20 is connected to the monitoring arrangement M that schematically shows in Fig. 6 a and 6b.
Fig. 6 a and 6b show two kinds of different layouts of conductive cable 30, pass after the junction box 31 together, described cable distributes in corresponding connection lead-in wire 32, this connection lead-in wire free-ended each have corresponding adapter 33, described adapter will be releasably connected to the coupling part of respective electrode 20.Because the connection of conductive cable 30 lead-in wire 32 is flexible, they can be used to make the conductive cable 30 of electrode module to adapt to the different length of electrode 20 and the layout of distribution.
Figure 7 illustrates five a kind of layouts that connect lead-in wire 32, described lead-in wire 32 is protruding from junction box 31, is used for keeping location-plate 34 in the end of described lead-in wire with preset space length, and described location-plate 34 keeps adapter 33 to be in intended orientation.In this case, location-plate 34 makes the layout design of conductive cable 30 become to be used for the electrode module 10 of certain particular type, is convenient to connect in the coupling part of electrode 20 that lead-in wire 32 is installed in respective electrode module 10.
Fig. 8,8a and 8b show the application of electrode module in the body section C that the chest by the patient limits, and described patient has damage F in his territory, right regio pectoris.For fear of electrode 20 being placed in patient's the damage field, electrode module 10 has discontinuities around the layout of described body section C, makes two electrodes 20 of contiguous described discontinuities limit the interruption distance " Di " that is enough to discharge described damage field F betwixt.Distribution of electrodes in the layout of these figure is followed the different distance pattern " De " between the electrode 20, makes can to observe the bigger concentration degree of electrode in the frontal left region of body section C (Fig. 8 a).Fig. 8 b shows the operator scheme based on the image reconstruction algorithm of the actual arrangement of inserting the electrode 20 in the finite element grid.Electrode 20 with the localized situation of equidistant mode under, the thorax image resolution of damage field will be different.
Concern aspect based on the model of finite element grid is: the distance " De " between the electrode 20 of equal modules and disparate modules, " Da " or " Di " only need to provide information to monitoring arrangement M, and need not be constant.
Fig. 9 a, 9b, 9c, 9d, 9e and 9f show around the various combination of the electrode module 10 of body section C.
Pair of electrodes module 10 has been shown in Fig. 9 a has centered on the body section C location that the chest girth is approximately the ewborn infant of 25cm, two electrode modules 10 are identical.
In Fig. 9 b, illustrated and be different from the location shown in Fig. 9 a, but also utilized the electrode module 10 of a pair of identical structure.
Fig. 9 c shows two kinds of different layouts that comprise around three electrode modules 10 of body section C layout with 9d, and the electrode of module has different quantity and distribution.
Fig. 9 e and 9f show respectively and utilize four and six electrode modules 10, and the electrode 20 of the module of Fig. 9 e has identical quantity and equidistant placement.Fig. 9 f shows electrode module 10 and centers on the layout that girth is approximately adult's chest of 80cm, and one of them module is different on quantity and distance between electrodes with other module.
The structure of above-mentioned electrode module 10 relates to such embodiment, wherein each module is formed by the extension of bracing strip 11, described extension is blocked according to the predetermined pattern length of this module in advance, and wherein it to be equipped with also be predetermined and the electrode 20 of standard number, described electrode is according to identical or different, but also is that the distance " De " of being scheduled to is arranged.
Yet as shown in Figure 10, each electrode module can be by operator oneself, is perhaps formed from the extension of the bracing strip 11 that blocks from continuous strip by the EIT personnel that use, and described continuous strip for example can be arranged in as shown in Figure 15 the roll coil of strip.Continuously bracing strip 11 be provided with the identical distance " De " that separates each other central longitudinal to aligned hole 18, described distance " De " can be corresponding to minimum potential range " De " between two electrodes 20 or the distance " De " that is determined in advance as the basic pattern of concentrating of electrode 20 in the extension of body section C to be analyzed.
After the extension that limits module support strap 11 to be formed, the operator can be fixed on electrode 20 in the hole 18 of bracing strip 11.
The extension of the bracing strip 11 shown in Figure 10,11 and 14 has five holes 18, and each hole can receive corresponding electrode 20.In the example of Figure 11 and 14, each of five holes of bracing strip 11 receives an electrode 20.Yet should be understood that electrode 20 can only be installed in one of hole 18 or some, this depends on that module to be formed is with the operator scheme that obtains.
Under the situation that the extension of bracing strip 11 blocks from the continuous strip that is provided with hole 18 in advance, the extension of each bracing strip 11 does not comprise positioner 12, connecting device 14 and connector receiving system 15 as shown in Figure 10 usually.Yet as shown in Figure 11 and 14, the extension of the bracing strip 11 of having bored a hole can be by any suitable processing reception and stationary positioned device 12, connecting device 14 and connector receiving system 15 in their opposite end.
Should be understood that further the continuous bracing strip 11 that electrode 20 has been installed in the hole 18 of bracing strip 11 can offer the EIT system operator.In this case, should provide the different pattern of continuous bracing strip 11, each pattern limits the specific range " De " of electrode 20, but allows the operator to select the quantity of the electrode 20 in each required module.
Figure 11 illustrates the extension of bracing strip 11, below this bracing strip, the attaching components 25 that can be limited by the annular section of two-sided tape is arranged around each hole 18 application that will receive respective electrode 20.Attaching components 25 keeps the seat ring 22 of electrodes 20 to lean against on the lower surface of bracing strip 11, and 18 assemblings of corresponding hole are passed in the coupling part 23 of electrode 20, protrudes upward to be connected to conductive cable 30 from the upper surface of bracing strip 11.
As what in Figure 16 of accompanying drawing, can notice, each extension of bracing strip 11 can be arranged between per two continuous electrodes 20 or be used for installing subsequently between per two continuous holes 18 of corresponding electrode 20, and the slit 11a of a pair of parallel longitudinal separates each other and separates with the adjacent vertical side of the edge of the extension of bracing strip 11.
In this Figure 16 illustrated the extension of bracing strip 11 of type shown in Figure 10, that promptly block or produce and only have and be used to place electrode but the extension of the bracing strip 11 in the hole 18 that does not have electrode in other mode from continuous strip, to be used for illustrating better the constructive alternative that proposes here.In this constructive alternative of Figure 16, draw ring 11b in the middle of per two slit 11a of the extension of bracing strip 11 limit one, this centre draw ring is attached in the band self by its end, have only one to be out of shape by insert spacer 19 between the adjacent side of draw ring 11b and bracing strip 11 part among these draw rings 11b, the adjacent area distortion that makes draw ring 11b and bracing strip 11 is to reduce the extension of bracing strip 11.
Like this, obtained very simple organization plan, this scheme allows along the circumferential extension portion of patient's body section C easily and adaptive apace bracing strip 11.Therefore can realize the extension of bracing strip 11 is placed on patient's the body section C by the size that bracing strip 11 has according to the quantity of adaptive spacer 19 is more or less dwindled below each draw ring 11b, wherein one or more draw ring 11b are by corresponding spacer 19 distortion.After bracing strip 11 adaptive, consider patient's respiratory movement, can remove spacer 19, to allow bracing strip 11 to have to be enough to reach the longitudinal extension part of the circumferential extension portion of body section C.
Further should be understood that, after under abnormal breathing conditioned disjunction body volume condition, using band, can place spacer 19 providing size adjustment being used to reduce the longitudinal extension part of each bracing strip, thereby make it be adapted to the reducing of profile of described body section C better.
As shown in Figure 17, two continuous bracing strips 11 can be connected to each other by means of link block 60, described link block is limited by the extension of bracing strip substantially, described bracing strip by with the bracing strip 11 that limits electrode module in the same material that uses make, perhaps also can be by any suitable material structure, described link block 60 sizes are made for certain preset distance with different value are provided between two continuous bracing strips 11, and each link block further has connecting device 14 and is configured to connector receiving system 15 that mates with connecting device 14 and the connector receiving system 15 that is arranged in the bracing strip 11 in their opposite end.
Shown in the structure, connecting device 14 and connector receiving system 15 adopt the form of little crotch and bar respectively, they are interconnecting during in conjunction with two extensions of bracing strip 11 directly or by link block 60 in the middle of using.
As mentioned above, the different electrode modules of the certain operational modes that is configured to provide in the system are provided for the EIT system operator electrode assemblie disclosed in this invention, described pattern is determined in advance in the works module, so that allow the latter to meet the different condition of using and diagnosing.
Claims (24)
1. electrode assemblie that is used for electrical impedance tomography (EIT), it is characterized in that: described electrode assemblie comprises a plurality of different electrode modules (10), each electrode module comprises the bracing strip of being made by flexible material (11), described bracing strip has the vertical deformability that reduces and has the electrode (20) of the requirement that will be electrically connected to monitoring arrangement (M), one in the electrode module (10) comprises at least two electrodes (20), the size of the corresponding bracing strip (11) of each electrode module (10) is made for settles and remains on the corresponding extension of patient's body section, according to the plane of the concern of transversal described body section (C), each all has different electrode modules (10) according to the certain operational modes that will obtain from each electrode module (10) and the quantity of predetermined electrode (20) and the distance (De) between per two continuous electrodes.
2. electrode assemblie according to claim 1 is characterized in that: separate each other identical distance (De) and being arranged on identical quantity in each module of described electrode module (10) of the electrode (20) of first group of electrode module (10).
3. electrode assemblie according to claim 1 is characterized in that: separate each other identical distance (De) and being arranged on different quantity in each module of described electrode module (10) of the electrode (20) of second group of electrode module (10).
4. electrode assemblie according to claim 1 is characterized in that: the electrode (20) of the 3rd group of electrode module (10) is arranged in each electrode module (10) with identical quantity, but separates each other different distance (De).
5. electrode assemblie according to claim 1 is characterized in that: the electrode (20) of the 4th group of electrode module (10) is arranged in each module of described electrode module (10) and the different distance (De) that also separates each other with different quantity.
6. electrode assemblie according to claim 1 is characterized in that: each electrode module (10) is provided with individual identification codes (13).
7. electrode assemblie according to claim 1 is characterized in that: the quantity of the electrode (20) of each electrode module (10) changes between 1 to 32.
8. electrode assemblie according to claim 1 is characterized in that: the bracing strip (11) of each electrode module (10) is provided with positioner (12) at an end of respective support band (11).
9. electrode assemblie according to claim 8, it is characterized in that: each positioner (12) comprises extension (12a), and described extension is combined in an end of respective support band (11) and is provided with the labelling (12b) of the relative localization between two electrode modules of indication (10).
10. electrode assemblie according to claim 9 is characterized in that: the corresponding interval distance (Da) between two adjacent electrodes (20) of labelling (12b) per two the continuous electrode modules of qualification (10) of the positioner (12) of each bracing strip (11).
11. according to each described electrode assemblie in claim 1 or 8, it is characterized in that: the bracing strip (11) of each electrode assemblie (10) at one end is provided with connecting device (14), and be provided with connector receiving system (15) at the other end, the connecting device (14) of electrode module (10) can be connected to the connector receiving system (15) of another electrode module (10).
12. described electrode assemblie when being subordinated to claim 8 according to claim 11 is characterized in that: connecting device (14) is limited in the positioner (12), the form of the extension (12a) of an end of employing bracing strip (11).
13. electrode assemblie according to claim 1, it is characterized in that: electrode module (10) forms by the corresponding extension of bracing strip (11), described extension limits the predetermined pattern length of promising this module in advance, and wherein also being equipped with also is the electrode (20) of standard and predetermined quantity, the described electrode predetermined distance (De) that separates each other.
14. electrode assemblie according to claim 1, it is characterized in that: electrode module (10) forms by the corresponding extension of bracing strip (11), described extension limit the predetermined pattern length of promising this module in advance and be provided be spaced apart at a predetermined distance from each other (De) central longitudinal to aligned hole (18), at least one hole (18) of the extension of bracing strip (11) receives and keeps corresponding electrode (20).
15. electrode assemblie according to claim 1, it is characterized in that: each electrode module (10) is formed by the extension of the bracing strip with certain-length (11), described length determines that according to specific dimensions required in an application extension of described bracing strip (11) has the electrode (20) of identical preset distance (De) that separate each other by the EIT system operator.
16. electrode assemblie according to claim 15, it is characterized in that: the extension of the bracing strip (11) of each electrode module (10) downcuts from successive bracing strip, and described successive bracing strip has the electrode (20) that the identical preset distance (De) that separates each other is installed.
17. electrode assemblie according to claim 1, it is characterized in that: each electrode module (10) is formed by the extension that has the bracing strip (11) of central longitudinal to aligned hole (18), the described hole identical preset distance (De) that separates each other, the extension of described bracing strip (11) has certain-length, described length determined according to required specific dimensions in an application by the EIT system operator, and each hole (18) of the extension of bracing strip (11) receives and keeps an electrode (20).
18. electrode assemblie according to claim 17 is characterized in that: the extension of the bracing strip (11) of each electrode module (10) downcuts from having the continuous bracing strip of central longitudinal to aligned hole (18).
19. electrode assemblie according to claim 1, it is characterized in that: each bracing strip (11) has a pair of vertical slit (11a) between the position of per two continuous electrodes (20), described vertical slit separates each other and separates with the adjacent vertical side of the edge of the extension of bracing strip (11), thereby between described vertical slit, limit draw ring (11b), when introducing spacer (19) between the upper surface in the sides adjacent zone of the lower surface of draw ring (11b) and bracing strip (11), described draw ring selectively outwards is out of shape from the plane of the adjacent area of bracing strip (11).
20. electrode assemblie according to claim 1, it is characterized in that: described electrode assemblie comprises conductive cable (30), and described conductive cable is connected to monitoring arrangement (M) with each electrode of electrode module (10) and is distributed to the different electrodes (20) of each electrode module (10) by means of the connection lead-in wire (32) that stretches out from junction box (31).
21. electrode assemblie according to claim 20 is characterized in that: the end that connects lead-in wire (32) remains to location-plate (34) with predetermined space.
22. electrode assemblie according to claim 1 is characterized in that: the link block (60) that at least two successive bracing strips (11) limit by means of the predetermined extension by bracing strip (11) and vertically connecting each other.
23. electrode assemblie according to claim 22, it is characterized in that: the bracing strip (11) of each electrode module (10) at one end is provided with connecting device (14), and be provided with connector receiving system (15) at the other end, link block (60) at one end is provided with connecting device (14), and be provided with connector receiving system (15) at the other end, the connecting device (14) of link block (60) can be connected to the connector receiving system (15) of bracing strip (11), and the connector receiving system (15) of link block (60) receives the connecting device (15) of another bracing strip (11).
24. electrode assemblie according to claim 23 is characterized in that: connecting device (14) and connector receiving system (15) are formed by bar and the bar with the form bending of crotch, and it is respectively fixed to the opposite end and the link block (60) of bracing strip (11).
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI05057361 | 2005-12-20 | ||
| BRPI0505736-1 | 2005-12-20 | ||
| BRPI0505736 | 2005-12-20 | ||
| BRPI06044794 | 2006-10-10 | ||
| BRPI0604479A BRPI0604479B8 (en) | 2006-10-10 | 2006-10-10 | electrode set for electrical impedance tomography |
| BRPI0604479-4 | 2006-10-10 | ||
| PCT/BR2006/000284 WO2007070997A1 (en) | 2005-12-20 | 2006-12-19 | Electrode assembly for electrical impedance tomography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101340847A true CN101340847A (en) | 2009-01-07 |
| CN101340847B CN101340847B (en) | 2012-07-25 |
Family
ID=39060289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800483848A Expired - Fee Related CN101340847B (en) | 2005-12-20 | 2006-12-19 | Electrode assembly for electrical impedance tomography |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101340847B (en) |
| AR (1) | AR058368A1 (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102217933A (en) * | 2011-06-10 | 2011-10-19 | 中国人民解放军第四军医大学 | Electrode placing device of electrical impedance tomography |
| CN102697499A (en) * | 2012-06-08 | 2012-10-03 | 思澜科技（成都）有限公司 | Electrode band for electrical impedance tomography and using method thereof |
| CN103300855A (en) * | 2013-06-25 | 2013-09-18 | 思澜科技（成都）有限公司 | Electrode fixing and positioning device for breast electrical impedance tomography |
| CN104080399A (en) * | 2012-01-27 | 2014-10-01 | 斯威斯托姆公开股份有限公司 | Electro impedance measurement belt and use method thereof |
| CN105232041A (en) * | 2014-07-07 | 2016-01-13 | 北京大学深圳研究生院 | Measuring device for electrical characteristic distribution of human body surface, data terminal and method |
| CN105326502A (en) * | 2014-07-07 | 2016-02-17 | 北京大学深圳研究生院 | Detection device and method for human body surface electrical characteristic distribution |
| CN106998837A (en) * | 2014-12-12 | 2017-08-01 | 廷佩尔股份有限公司 | Forming devices for adjusting electrode strips |
| CN106996947A (en) * | 2016-01-24 | 2017-08-01 | 上海海洋大学 | A kind of irregular geometry shape capacitance tomography sensor and evaluation method |
| CN107106073A (en) * | 2014-12-12 | 2017-08-29 | 廷佩尔股份有限公司 | Electrode module box |
| CN107106072A (en) * | 2014-12-12 | 2017-08-29 | 廷佩尔股份有限公司 | electrode strips |
| CN107811616A (en) * | 2016-09-14 | 2018-03-20 | 中国科学院宁波材料技术与工程研究所 | A kind of flexible many reference amounts human body physical sign detector and its application method |
| CN108324311A (en) * | 2013-01-31 | 2018-07-27 | Ge医疗系统环球技术有限公司 | Patient body shape detects automatically and patient's intelligent positioning |
| CN108969094A (en) * | 2018-08-06 | 2018-12-11 | 广州复大医疗有限公司 | For the probe fixture in percutaneous irreversible electroporation ablation |
| CN109199384A (en) * | 2018-07-19 | 2019-01-15 | 天津大学 | A kind of incomplete electrode band for torso model EIT imaging |
| CN112401865A (en) * | 2020-11-11 | 2021-02-26 | 中国科学技术大学 | Electrical impedance imaging method based on super-shape |
| WO2021114463A1 (en) * | 2019-12-10 | 2021-06-17 | 北京华睿博视医学影像技术有限公司 | Electrode band, electrode structure, feed line, and electrical impedance imaging device |
-
2006
- 2006-12-18 AR ARP060105574A patent/AR058368A1/en not_active Application Discontinuation
- 2006-12-19 CN CN2006800483848A patent/CN101340847B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102217933A (en) * | 2011-06-10 | 2011-10-19 | 中国人民解放军第四军医大学 | Electrode placing device of electrical impedance tomography |
| CN104080399A (en) * | 2012-01-27 | 2014-10-01 | 斯威斯托姆公开股份有限公司 | Electro impedance measurement belt and use method thereof |
| CN102697499A (en) * | 2012-06-08 | 2012-10-03 | 思澜科技（成都）有限公司 | Electrode band for electrical impedance tomography and using method thereof |
| CN108324311B (en) * | 2013-01-31 | 2022-02-11 | Ge医疗系统环球技术有限公司 | Automatic detection of body shape of patient and intelligent positioning of patient |
| CN108324311A (en) * | 2013-01-31 | 2018-07-27 | Ge医疗系统环球技术有限公司 | Patient body shape detects automatically and patient's intelligent positioning |
| CN103300855B (en) * | 2013-06-25 | 2018-03-20 | 思澜科技（成都）有限公司 | Electrode stationary positioned device for Breast electrical impedance imaging |
| CN103300855A (en) * | 2013-06-25 | 2013-09-18 | 思澜科技（成都）有限公司 | Electrode fixing and positioning device for breast electrical impedance tomography |
| CN105232041A (en) * | 2014-07-07 | 2016-01-13 | 北京大学深圳研究生院 | Measuring device for electrical characteristic distribution of human body surface, data terminal and method |
| CN105326502A (en) * | 2014-07-07 | 2016-02-17 | 北京大学深圳研究生院 | Detection device and method for human body surface electrical characteristic distribution |
| CN107106073A (en) * | 2014-12-12 | 2017-08-29 | 廷佩尔股份有限公司 | Electrode module box |
| CN107106072A (en) * | 2014-12-12 | 2017-08-29 | 廷佩尔股份有限公司 | electrode strips |
| CN106998837A (en) * | 2014-12-12 | 2017-08-01 | 廷佩尔股份有限公司 | Forming devices for adjusting electrode strips |
| CN106996947A (en) * | 2016-01-24 | 2017-08-01 | 上海海洋大学 | A kind of irregular geometry shape capacitance tomography sensor and evaluation method |
| CN107811616A (en) * | 2016-09-14 | 2018-03-20 | 中国科学院宁波材料技术与工程研究所 | A kind of flexible many reference amounts human body physical sign detector and its application method |
| CN109199384A (en) * | 2018-07-19 | 2019-01-15 | 天津大学 | A kind of incomplete electrode band for torso model EIT imaging |
| CN108969094A (en) * | 2018-08-06 | 2018-12-11 | 广州复大医疗有限公司 | For the probe fixture in percutaneous irreversible electroporation ablation |
| CN108969094B (en) * | 2018-08-06 | 2023-12-26 | 广州复大医疗有限公司 | Probe fixing device for percutaneous irreversible electroporation ablation |
| WO2021114463A1 (en) * | 2019-12-10 | 2021-06-17 | 北京华睿博视医学影像技术有限公司 | Electrode band, electrode structure, feed line, and electrical impedance imaging device |
| CN112401865A (en) * | 2020-11-11 | 2021-02-26 | 中国科学技术大学 | Electrical impedance imaging method based on super-shape |
Also Published As
| Publication number | Publication date |
|---|---|
| AR058368A1 (en) | 2008-01-30 |
| CN101340847B (en) | 2012-07-25 |
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