WO2015147466A1 - Dispositif de mesure de l'impédance dans un corps humain - Google Patents

Dispositif de mesure de l'impédance dans un corps humain Download PDF

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Publication number
WO2015147466A1
WO2015147466A1 PCT/KR2015/002416 KR2015002416W WO2015147466A1 WO 2015147466 A1 WO2015147466 A1 WO 2015147466A1 KR 2015002416 W KR2015002416 W KR 2015002416W WO 2015147466 A1 WO2015147466 A1 WO 2015147466A1
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WO
WIPO (PCT)
Prior art keywords
human body
electrodes
base plate
impedance
impedance measuring
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Application number
PCT/KR2015/002416
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English (en)
Korean (ko)
Inventor
박문서
Original Assignee
주식회사 엠에스피
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Application filed by 주식회사 엠에스피 filed Critical 주식회사 엠에스피
Publication of WO2015147466A1 publication Critical patent/WO2015147466A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0536—Impedance imaging, e.g. by tomography

Definitions

  • the present invention relates to a device for measuring the impedance in the human body, and more particularly to a device for measuring the impedance in the human body using the range of the electrode can be recognized and the electrode used according to the measurement site of the human body. .
  • EIT electrical impedance tomography
  • EIT is a method of measuring the resistance of body tissue after flowing a current of 10 to 100 kHz millivolts through the human body.In order to understand the electrical characteristics of the cross-section, several electrodes are attached to the body parts and then sequentially Current is measured, the resistance is measured, and the resistance is imaged.
  • the present invention provides an impedance measuring apparatus in the human body that can be easily applied to the curved part of the human body, and can be used variably according to the total length of the measuring part such as the waist or the upper arm.
  • the present invention provides an impedance measurement apparatus in the human body capable of detecting the number and the application range of the electrode used to enable different algorithms according to the shape and number of the selected electrode.
  • Intra-body impedance measuring apparatus includes a base plate; A plurality of electrodes arranged on one surface of the base plate; A plurality of first and second power lines connected to each of the plurality of electrodes; And a display unit provided in plurality, and displaying a state of use of corresponding electrodes among the electrodes.
  • the base plate is formed to have a constant length
  • the display unit is arranged along the length direction on the base plate.
  • the display unit may be an LED light emitting device.
  • the display unit may be provided to correspond to the number of rows of the electrodes arranged in the longitudinal direction of the base plate.
  • the sensing unit for detecting the use range of the plurality of electrodes in the longitudinal direction of the base plate may include.
  • the display units corresponding to the electrodes within the use range detected by the sensing unit to be distinguishable from other display units may be turned on or off.
  • the apparatus may further include an image acquisition unit that acquires an image of a specific portion of the human body from an impedance of a specific portion of the human body measured through the electrodes within the use range detected by the detection unit.
  • the other side surface of the base plate may be provided with a stress sensor for detecting the degree of bending of the base plate.
  • the apparatus may further include a shape calculator configured to calculate a three-dimensional shape of the human body to which the base plate is applied, from data on the degree of deflection of each part of the base plate transmitted from the stress sensor. In the acquisition process may reflect the three-dimensional shape of the human body calculated by the shape calculation unit.
  • the distance between the electrodes may be 5mm to 20mm.
  • first power line and the second power line may be input electrodes and output electrodes, respectively.
  • the impedance measurement apparatus in the human body according to the present invention is easily applicable to the curved part of the human body using electrodes arranged in the longitudinal direction, and can be used variably according to the total length of the measuring part such as the waist or the upper arm.
  • the present invention it is possible to detect the number of the electrode used and the application range so that different algorithms can be applied according to the shape and number of the selected electrode.
  • FIG. 1 is a plan view showing a state of the impedance measuring apparatus in the human body having a stress sensor according to an embodiment.
  • FIG. 2 is a bottom view illustrating a state of an internal impedance measuring apparatus including the stress sensor of FIG. 1.
  • FIG 3 is a cross-sectional view illustrating a state of an electrode provided in the human body impedance measuring apparatus according to an embodiment.
  • Figure 4 is a cross-sectional view showing the operation of the electrode provided in the body impedance measuring apparatus according to an embodiment.
  • 5 to 8 are schematic diagrams for explaining a process of imaging an internal impedance of a human body using an impedance value measured by electrical impedance tomography.
  • FIG. 9 is a block diagram illustrating an apparatus for measuring impedance in a human body, according to an exemplary embodiment.
  • FIG. 10 is a schematic diagram illustrating a state of use of the impedance measuring apparatus in the human body of FIG. 1.
  • FIG. 11 is a schematic diagram illustrating a method of measuring impedance of a waist of a human body using the apparatus for measuring impedance of the human body of FIG. 1.
  • FIG. 12 is a schematic diagram illustrating a method of measuring impedance of the upper arm of the human body using the apparatus for measuring impedance in the human body of FIG. 1.
  • FIG. 1 is a plan view illustrating an internal impedance measuring apparatus having a stress sensor according to an exemplary embodiment
  • FIG. 2 is a bottom view illustrating an internal impedance measuring apparatus including a stress sensor of FIG. 1.
  • Intra-body impedance measuring apparatus 10 includes a base plate 100 having a predetermined length. That is, the base plate 100 has a certain length so that the impedance can be measured in a state of being worn around a specific part including the waist of the human body.
  • the base plate 100 is formed of a flexible material so that it can be placed on the bent portion, such as the arm or waist of the human body.
  • a plurality of stress sensors 110 are arranged on an upper surface of the base plate 100.
  • the stress sensors 110 are arranged in rows and columns on the base plate 100.
  • Each stress sensor 110 detects the degree of bending at one point of the base plate provided with the stress sensor. That is, the stress sensors 110 may detect the strength and direction of the stress according to the bending at each point when the base plate 100 is applied to the curved portion to receive the stress. Therefore, when the detection signals of the stress sensors 110 arranged along the base plates 100 are combined, a three-dimensional shape of the human body to which the impedance measuring apparatus 10 in the human body is applied may be calculated.
  • the display unit 140 is provided in plural along the longitudinal direction on one side of the upper surface of the base plate 100 as seen in the drawing.
  • the display unit 140 may be implemented using an LED light emitting element, and the like, and each element displays a region to which a user can recognize whether the electrodes are used in the longitudinal direction. For example, when the display unit 140 is turned on from the display unit at the left end to the display unit located in the center, the display unit 140 may be interpreted as displaying the state that the electrodes provided in the region from the left end to the center are used. .
  • electrodes 120 are arranged on a bottom surface of the base plate 100.
  • Each electrode 120 may include an input electrode and an output electrode to measure impedance by using current flowing between the other electrodes 120.
  • the distance between each electrode 120 is preferably formed about 5mm to 20mm. As the number of electrodes 120 increases, the resolution of the image through the final impedance increases, but the amount of calculation for calculating the corresponding image increases.
  • the electrode 120 will be described in detail.
  • the display unit 140 is provided to correspond to the number of columns of the electrodes 120 arranged in the longitudinal direction of the base plate 100 so that each display unit 140 corresponds to a column of one electrode 120 in the use state of the corresponding column.
  • the display unit 140 is not limited thereto, and the display units 140 may indicate a state of use of the electrodes 120 in a predetermined region.
  • FIG. 3 is a cross-sectional view showing the appearance of the electrode provided in the human body impedance measuring apparatus according to an embodiment
  • Figure 4 is a cross-sectional view showing the operation of the electrode provided in the human body impedance measuring apparatus according to an embodiment.
  • the electrode 120 includes a housing member 121, a guide rod 123, a hollow electrode member 127, and an elastic member 125.
  • the guide rod 123 is extended to one open surface of the housing member 121, and the hollow electrode member 127 may reciprocate with the guide rod 123 inserted therein. At this time, the hollow electrode member 127 is a constant elastic force is applied to the outside by the elastic member 125.
  • the hollow electrode member 127 is composed of a conductive material or an electrode coated with a conductive material.
  • the conductive material is preferably made of a material harmless to a human body.
  • a gold electrode or a gold coated electrode may be used. Can be.
  • the housing member 121 including the guide rod 125 is composed of a conductive material or an electrode coated with a conductive material. Such conductive material does not need to be particularly limited as long as the material is excellent in conductivity. However, as in the hollow electrode member 127, a gold electrode or a gold coated electrode may be used, or may be made of copper wire, iron wire, or the like.
  • the open end outer circumferential surface of the housing member 121 is formed to have a locking step 129 inward to prevent the hollow electrode member 127 from escaping to the outside.
  • the elastic member 125 may also be composed of a spring made of a conductive material, for example, a metal material.
  • FIGS. 5 to 8 are schematic diagrams for explaining a process of imaging an internal impedance of a human body using an impedance value measured by electrical impedance tomography.
  • EIT is a technology that can show the electrical characteristics of the body cross-section and attach several electrodes to the body part and then send electricity sequentially and measure the resistance to image the internal resistance of the body. To this end, it is assumed that the input electrodes S and s and the receiving electrodes R and r are attached to the human tissue at 2 * 2, and the resistance is measured by flowing a current.
  • the horizontal input electrodes S1 S2, the horizontal output electrodes R1 and R2, and the vertical input electrodes s1 and s2 and the vertical output electrodes r1 r2 are disposed.
  • a current flows from the horizontal input electrodes S1 S2 to the horizontal output electrodes R1 and R2 to measure impedance in the horizontal direction.
  • a current flows from the vertical input electrodes s1 and s2 to the vertical output electrodes r1 r2 to measure impedance in the vertical direction.
  • the EIT device consists of a cylindrical annulus, which is attached to the human body in the form of wrapping the entire body, or attaching it to a wrist, ankle, etc., and then sequentially passing current to measure resistance.
  • the resistances measured horizontally and vertically correspond to the sum of the total resistances of the human tissues, and thus the distribution of resistance values can be detected in the tissues transmitted through the cross section.
  • the distribution of resistance values can be used to calculate the voltage distribution of the human body based on the strength of the current to indicate the equipotential line location.
  • FIG. 9 is a block diagram showing a state of the impedance measuring apparatus in the human body of the present invention.
  • the electrodes 120 When the electrodes 120 are in contact with the human body, the electrodes 120 serve as input / output terminals for the human body so that current may flow through the human body. Accordingly, the electrodes 120 that do not contact the human body do not flow current, so that they do not sense current or voltage at the output electrode side connected to the corresponding electrode 120.
  • the detector 210 may detect a current or voltage from the output electrode side of each electrode 120 to know the use state of each electrode 120. For example, when a current flows from an output electrode of a specific terminal or when the voltages of the output electrode and the input electrode fall below an open voltage, it may be determined that the electrode 120 is in use by contacting a human body.
  • the sensing unit 210 may calculate a range in use of all the electrodes 120 by determining the use state of the electrodes 120.
  • the area display unit 220 distinguishes the display units corresponding to the corresponding areas of the display units 140 from the other display units in order to display the areas of the electrodes 120 detected as being in use by the sensing unit 210 described above. It can be turned on or off. For example, when the display units 140 are provided with the number corresponding to the columns of each electrode, the area display unit 220 is in use by the sensing unit 210 from the display unit in the first column of the electrodes 120 of the entire n rows. The display unit corresponding to the electrode of the final column determined to be may be turned on. In this case, the user may recognize a state in which the display unit 140 is turned on to determine a range of electrode strings.
  • the image acquisition unit 230 obtains an image of a specific part of the human body from an impedance of a specific part of the human body measured through electrodes within a use range detected by the detection unit.
  • the image acquisition unit 230 may image the internal impedance of the human body by the electrical impedance tomography described with reference to FIGS. 5 to 8 as described above.
  • the shape calculator 240 calculates a three-dimensional shape of the human body to which the base plate is applied by receiving data on the degree of bending for each part of the base plate transmitted from the stress sensor. It is difficult to estimate the shape of the applied human body only by the impedance itself measured by the electrodes 120. Therefore, it is possible to obtain a more accurate result by estimating the three-dimensional shape including the exact human body bend and use it for the calculation of the impedance.
  • the above-described image acquisition unit 230 may reflect the three-dimensional shape of the human body calculated by the shape calculation unit 240 in the process of acquiring the image of a specific part of the human body.
  • components of the sensor 210, the English display unit 220, the image acquisition unit 230, and the shape calculator 240 are integrally formed with the above-described internal impedance measuring apparatus of FIGS. 1 and 2. It may be possible, and also provided in a separate physical configuration from the impedance measurement apparatus in the human body of Figures 1 and 2 can be electrically connected.
  • FIG. 10 is a schematic diagram illustrating a state of use of the impedance measuring apparatus of the human body of FIG. 1
  • FIG. 11 is a schematic diagram illustrating a state of measuring impedance of a waist of a human body using the impedance measuring apparatus of the human body of FIG. 1
  • FIG. Figure 1 is a schematic diagram showing the appearance of measuring the impedance of the upper arm of the human body using the impedance measuring apparatus in the human body.
  • the impedance measuring apparatus 10 in the human body may measure impedance after covering a specific portion of the human body. At this time, only the electrodes of the region R1 surrounding the human body among the entire electrodes 120 are in use.
  • Electrodes 120 are used is useful for determining whether the values measured from the stress sensor 110 are valid.
  • an internal body impedance measuring apparatus 10 may be worn on a waist Bd1 of a human body.
  • a relatively large number of electrodes come into contact with the human body and thus may be judged to be in use.
  • the stress sensor 110 included in the use state region calculates a more accurate three-dimensional shape of the human body and calculates the impedance of the human body. Can be used for imaging.
  • the internal body impedance measuring apparatus 10 may be worn on the upper arm Bd2 of the human body.
  • a relatively small number of electrodes come into contact with the human body and may be determined as a use state, and the stress sensor 110 included in the use state region regardless of the bending state of the stress sensor 110 not included in the use state region.
  • the impedance measurement apparatus in the human body according to the present invention is easily applicable to the curved part of the human body using electrodes arranged in the longitudinal direction, and can be used variably according to the total length of the measuring part such as the waist or the upper arm.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

La présente invention comprend : une plaque de base; de multiples électrodes disposées sur une surface de la plaque de base; de multiples premières et deuxièmes lignes électriques connectées à chacune des multiples électrodes; et une pluralité d'unités d'affichage pour afficher, parmi les électrodes, les états d'utilisation des électrodes correspondantes.
PCT/KR2015/002416 2014-03-25 2015-03-12 Dispositif de mesure de l'impédance dans un corps humain WO2015147466A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0034435 2014-03-25
KR1020140034435A KR101603764B1 (ko) 2014-03-25 2014-03-25 인체 내 임피던스 측정장치

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WO2015147466A1 true WO2015147466A1 (fr) 2015-10-01

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KR101880819B1 (ko) * 2016-11-18 2018-07-20 경희대학교 산학협력단 신생아 무호흡 측정장치 및 그 동작 방법과, 신생아 무호흡 측정 시스템

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100598146B1 (ko) * 2004-04-28 2006-07-07 메디게이트(주) 체임피던스 측정용 벨트 전극 장치
KR100700112B1 (ko) * 2006-02-03 2007-03-28 경희대학교 산학협력단 전기 임피던스 단층촬영 방법 및 시스템
KR100965351B1 (ko) * 2009-11-23 2010-06-22 박문서 인체내 임피던스 측정을 위한 전극 장치를 이용한 인체내 임피던스 측정과 시술 장치
KR20130134417A (ko) * 2012-05-31 2013-12-10 주식회사 네오닥터 경혈의 센싱 및 위치 추적장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100598146B1 (ko) * 2004-04-28 2006-07-07 메디게이트(주) 체임피던스 측정용 벨트 전극 장치
KR100700112B1 (ko) * 2006-02-03 2007-03-28 경희대학교 산학협력단 전기 임피던스 단층촬영 방법 및 시스템
KR100965351B1 (ko) * 2009-11-23 2010-06-22 박문서 인체내 임피던스 측정을 위한 전극 장치를 이용한 인체내 임피던스 측정과 시술 장치
KR20130134417A (ko) * 2012-05-31 2013-12-10 주식회사 네오닥터 경혈의 센싱 및 위치 추적장치

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