EP2283341A2 - Verfahren und messeinrichtung zur erhebung hinsichtlich der konzentration eines stoffes in einem untersuchungsbereich indikativer signale, insbesondere aus vitalem gewebe - Google Patents
Verfahren und messeinrichtung zur erhebung hinsichtlich der konzentration eines stoffes in einem untersuchungsbereich indikativer signale, insbesondere aus vitalem gewebeInfo
- Publication number
- EP2283341A2 EP2283341A2 EP08852593A EP08852593A EP2283341A2 EP 2283341 A2 EP2283341 A2 EP 2283341A2 EP 08852593 A EP08852593 A EP 08852593A EP 08852593 A EP08852593 A EP 08852593A EP 2283341 A2 EP2283341 A2 EP 2283341A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tissue
- light
- spectrometer
- examined
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000126 substance Substances 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 16
- 238000001228 spectrum Methods 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 230000003595 spectral effect Effects 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WHBHBVVOGNECLV-OBQKJFGGSA-N 11-deoxycortisol Chemical compound O=C1CC[C@]2(C)[C@H]3CC[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 WHBHBVVOGNECLV-OBQKJFGGSA-N 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14546—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring analytes not otherwise provided for, e.g. ions, cytochromes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1717—Systems in which incident light is modified in accordance with the properties of the material investigated with a modulation of one or more physical properties of the sample during the optical investigation, e.g. electro-reflectance
Definitions
- the invention is directed to a method and a measuring device for collecting signals which as such provide information about the concentration of a substance, in particular within a vital tissue area.
- the invention has for its object to provide solutions by which measured values can be generated by means of a spectrometric measurement, which in addition to the detection of certain substances provide more comprehensive information, in particular with regard to the amount or concentration of these substances in the tissue section in particular a capillary.
- This object is achieved according to the invention by a method for generating spectrometric measurement signals in which:
- Light is coupled into a vital tissue region to be examined
- Tissue region is fed to a spectrometer device, and the spectrometer device generates measurement signals which as such are the intensity of the
- Substances in the tissue section is calculated.
- the active change in the temperature of the tissue region to be examined is effected by irradiation of light.
- This light is preferably generated by a heat radiator, in particular a heated light source.
- light in the near infrared range is suitable for the detection of blood constituents.
- tissue temperature values associated with the respectively recorded spectra can be calculated in particular on the basis of the energy input made in the course of the heating phase, or they can also be measured.
- the measurement of the temperature can be carried out in particular under the direct evaluation of certain spectral ranges of the recorded spectrum.
- the heating of the tissue region or the sample to be examined is preferably carried out in pulses.
- the pulse interval can be determined such that, as part of the subsequent heating pulses, a successive heating of the tissue section to be examined is achieved.
- a corresponding spectrum is detected and stored in terms of data technology.
- the present invention is not limited to applications for determining the concentration of substances in vital tissue.
- the inventive approach for determining the concentration of substances indicative values based on an actively induced thermal distortion can also be applied to other samples, in particular for the in vitro analysis of substance concentrations.
- FIG. 1 shows a sketch to illustrate a measuring arrangement according to the invention for the subsequent generation of substance spectra, in each case with stepwise heating of the tissue section to be examined,
- Figure 2 is a diagram illustrating the variation of the absorption coefficient of a substance at different tissue temperatures
- FIG. 3 shows a diagram for illustrating the successive increase in temperature of the examined tissue region for the active induction of the concentration-indicative changes of the spectra.
- FIG. 1 shows in a greatly simplified manner a measuring arrangement for generating spectrometric measuring signals.
- This measuring arrangement comprises a light source 1, preferably embodied as an LED light source, and a receiver system 2 symbolized here only for the purpose of illustration as a prism, by means of which the light L 1 emerging from a sample P can be detected.
- the receiver system 2 comprises a spectrometer device, by means of which measurement signals are generated, which as such represent the intensity of the remission light L 1 associated with the wavelength.
- the measuring arrangement according to the invention is operated in such a way that the sample P is heated stepwise over a sufficiently long period of time, several spectra being recorded as part of this heating of the sample P.
- the concentration of certain substances can be calculated on the basis of a correlation approach.
- the calculation of the concentrations of these substances is carried out using a phenomenon that consists in the fact that the temperature dependence of the change in the optical density of certain substances within a studied overall system is also dependent on the concentration of the substance in that overall system.
- the tissue to be examined is heated to include the substance to be detected and at the same time the absorption spectrum is measured.
- the absorption coefficient A is given by:
- the concentration of S can be determined.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Biophysics (AREA)
- Biomedical Technology (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007055590 | 2007-11-20 | ||
PCT/EP2008/009827 WO2009065586A2 (de) | 2007-11-20 | 2008-11-20 | Verfahren und messeinrichtung zur erhebung hinsichtlich der konzentration eines stoffes in einem untersuchungsbereich indikativer signale, insbesondere aus vitalem gewebe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2283341A2 true EP2283341A2 (de) | 2011-02-16 |
Family
ID=40473402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08852593A Withdrawn EP2283341A2 (de) | 2007-11-20 | 2008-11-20 | Verfahren und messeinrichtung zur erhebung hinsichtlich der konzentration eines stoffes in einem untersuchungsbereich indikativer signale, insbesondere aus vitalem gewebe |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2283341A2 (de) |
JP (1) | JP2011522214A (de) |
KR (1) | KR20100110305A (de) |
DE (2) | DE112008003122A5 (de) |
WO (1) | WO2009065586A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5468089B2 (ja) * | 2009-12-18 | 2014-04-09 | パナソニック株式会社 | 成分濃度計、成分濃度測定方法、出荷検査システム、及び健康管理システム |
KR102669993B1 (ko) * | 2018-10-17 | 2024-05-27 | 삼성전자주식회사 | 대상체의 온도 변화에 따른 스펙트럼 처리 장치 및 방법 |
EP4435390A1 (de) * | 2021-11-17 | 2024-09-25 | Panasonic Intellectual Property Management Co., Ltd. | Infrarotstrahlsensor, messsystem und verfahren zur messung von infrarotstrahlen |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5115133A (en) * | 1990-04-19 | 1992-05-19 | Inomet, Inc. | Testing of body fluid constituents through measuring light reflected from tympanic membrane |
FI96993C (fi) * | 1992-01-30 | 1996-09-25 | Vaisala Oy | Kalibrointimenetelmä kaasujen pitoisuuden mittausta varten |
JPH07284490A (ja) * | 1994-02-22 | 1995-10-31 | Minolta Co Ltd | グルコース濃度測定装置 |
JPH0956702A (ja) * | 1995-08-18 | 1997-03-04 | Minolta Co Ltd | 無侵襲血中成分濃度測定装置 |
US6072180A (en) * | 1995-10-17 | 2000-06-06 | Optiscan Biomedical Corporation | Non-invasive infrared absorption spectrometer for the generation and capture of thermal gradient spectra from living tissue |
JPH1033512A (ja) * | 1996-07-26 | 1998-02-10 | Hitachi Ltd | 無侵襲生化学計測装置 |
JPH11123195A (ja) * | 1997-08-22 | 1999-05-11 | Kdk Corp | 生体測定方法及び装置 |
JPH11155840A (ja) * | 1997-11-27 | 1999-06-15 | Matsushita Electric Ind Co Ltd | 血糖計 |
JP3798550B2 (ja) * | 1998-04-16 | 2006-07-19 | 株式会社資生堂 | 皮膚中の成分の定量方法及び定量装置 |
JP2000051184A (ja) * | 1999-08-09 | 2000-02-22 | Mitsui Mining & Smelting Co Ltd | 光学的血糖値非破壊測定装置 |
JP4362936B2 (ja) * | 2000-04-25 | 2009-11-11 | パナソニック電工株式会社 | 生体中のグルコース濃度の測定装置 |
DE10027100C2 (de) * | 2000-05-31 | 2002-08-08 | Klaus Mueller-Dethlefs | Verfahren und Vorrichtung zum Nachweisen von Substanzen in Körperflüssigkeiten |
US7167734B2 (en) * | 2001-04-13 | 2007-01-23 | Abbott Laboratories | Method for optical measurements of tissue to determine disease state or concentration of an analyte |
DE10129754A1 (de) * | 2001-06-20 | 2003-01-02 | Holger Jungmann | Verfahren und Vorrichtung zur Erfassung von Stoffen in vitalem Gewebe |
US20050054908A1 (en) * | 2003-03-07 | 2005-03-10 | Blank Thomas B. | Photostimulation method and apparatus in combination with glucose determination |
JP2003265443A (ja) * | 2002-03-15 | 2003-09-24 | Shimadzu Corp | 無侵襲生体計測装置 |
US20040132167A1 (en) * | 2003-01-06 | 2004-07-08 | Peter Rule | Cartridge lance |
JP2004321368A (ja) * | 2003-04-23 | 2004-11-18 | Olympus Corp | グルコース濃度測定装置 |
JP2004321574A (ja) * | 2003-04-25 | 2004-11-18 | Olympus Corp | グルコース濃度測定装置 |
JP3566277B1 (ja) * | 2003-06-23 | 2004-09-15 | 株式会社日立製作所 | 血糖値測定装置 |
JP2005147896A (ja) * | 2003-11-17 | 2005-06-09 | Kagawa Univ | 混合溶液成分の濃度測定方法および濃度測定装置 |
JP4880985B2 (ja) * | 2005-11-30 | 2012-02-22 | 東芝メディカルシステムズ株式会社 | グルコースの非侵襲性測定法及びグルコースの非侵襲性測定装置 |
-
2008
- 2008-11-20 EP EP08852593A patent/EP2283341A2/de not_active Withdrawn
- 2008-11-20 WO PCT/EP2008/009827 patent/WO2009065586A2/de active Application Filing
- 2008-11-20 KR KR1020107013744A patent/KR20100110305A/ko not_active Application Discontinuation
- 2008-11-20 JP JP2010534406A patent/JP2011522214A/ja active Pending
- 2008-11-20 DE DE112008003122T patent/DE112008003122A5/de not_active Withdrawn
- 2008-11-20 DE DE102008058294A patent/DE102008058294B3/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2009065586A2 (de) | 2009-05-28 |
KR20100110305A (ko) | 2010-10-12 |
DE102008058294B3 (de) | 2011-08-25 |
DE112008003122A5 (de) | 2010-09-23 |
JP2011522214A (ja) | 2011-07-28 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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17P | Request for examination filed |
Effective date: 20100621 |
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DAX | Request for extension of the european patent (deleted) | ||
R17D | Deferred search report published (corrected) |
Effective date: 20090528 |
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RBV | Designated contracting states (corrected) |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20150602 |