WO2009043554A1 - Verfahren und messeinrichtung zur erhebung spektrometrischer messsignale aus vitalem gewebe - Google Patents
Verfahren und messeinrichtung zur erhebung spektrometrischer messsignale aus vitalem gewebe Download PDFInfo
- Publication number
- WO2009043554A1 WO2009043554A1 PCT/EP2008/008226 EP2008008226W WO2009043554A1 WO 2009043554 A1 WO2009043554 A1 WO 2009043554A1 EP 2008008226 W EP2008008226 W EP 2008008226W WO 2009043554 A1 WO2009043554 A1 WO 2009043554A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intensity
- light
- data
- examined
- measurement
- Prior art date
Links
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
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
-
- 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
- A61B5/0075—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy
-
- 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
- A61B5/14532—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 glucose, e.g. by tissue impedance measurement
-
- 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
- A61B5/1455—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 using optical sensors, e.g. spectral photometrical oximeters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
- A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
Definitions
- the invention is directed to a method and a measuring device for collecting spectrometric measuring signals from vital tissue.
- Measuring methods are known in which an analysis of vital tissue is accomplished by attaching a mobile spectrometer to a corresponding tissue region and recording the spectrum of remission light emerging from the tissue via this mobile spectrometer. On the basis of the spectrum thus recorded, a wide variety of substances present in the examined tissue region can be detected.
- the invention has for its object to provide solutions by which measured values can be generated by means of a spectrometric measurement, which provide more comprehensive information compared to the aforementioned previous recording approaches.
- 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
- the inventive concept determines which of the substances appearing in the recorded spectra are subject to vasomotion or other action caused by vital processes. These substances can be assigned to a subsystem based on the kinematic profile recorded by the consequences of the spectra. In particular, it is possible by the inventive concept to determine which substances are incorporated into the bloodstream and which substances are substantially static in the tissue surrounding the bloodstream tissue systems. According to a particularly preferred embodiment of the invention, the indicative of the temporal course of the spectra data are recorded by the spectrometrically resolved wavelengths, the data are assigned to the time course of the intensity.
- This storage can be done in particular by applying a data field for the recording of the spectrum, which contains data for each resolved wavelength value, which as such describe the time profile of the intensity, in particular the intensity dynamics.
- intensity dynamics data can in particular be stored as members of a series, in particular FFT parameters.
- the dynamic features generated according to the invention for the temporal change of the remission light spectrum can also be based on an evaluation method, whereby evaluation results are generated via this evaluation method, which as such describe or typify the physiological condition of a person.
- Figure 1 is a schematic diagram illustrating the approach of the invention for generating a sequence of spectra and the inclusion of the hereby detected, caused by vital processes dynamic spectrum changes for the assignment of substances to certain tissue, or capillary.
- FIG. 1 serves as an illustration of the method according to the invention for generating spectrometric measuring signals.
- light L is coupled into a tissue region G to be examined by means of a light source 1 embodied here as a diode.
- the light R emerging from this tissue region G is supplied to a spectrometer device 2, which is indicated here only by way of example as a prism.
- a spectrometer device 2 which is indicated here only by way of example as a prism.
- the light emerging from the tissue area to be examined light is decomposed into its spectral components.
- the intensity I (alternatively optical density OD) of the remission light R represent assignment to the wavelength ⁇ .
- the method according to the invention is characterized in that the measurement is processed in such a way that it extends over a time period T and that for this time period T data are generated which map the time profile of the intensity of the resolved wavelengths.
- the remission light R supplied to the spectrometer device 2 contains light from different zones of the tissue region G.
- this light contains fractions which are caused, for example, by substances flowing through capillary K of the tissue region G.
- the remission light R also contains spectral components of substances which originate from zones H of the tissue region in which no special dynamic changes of substance presence occur.
- the intensity of the spectra which are caused by substances that flow as such through the capillaries K, change in the example shown here in accordance with a Pulsomters made by Vasomotion.
- this pulse pattern can be seen, in particular, for certain wave spectral components in the range from 650 to 900 nanometers in the characteristic diagram recognizable here.
- the inventive concept consists in recognizing within a sum spectrum the spectral contributions of those substances whose presence alternates by vital mechanical effects. This makes it possible to isolate the spectrum of a pulsating liquid in a cloudy medium.
- the temperature of the static tissue essentially corresponds to the temperature of the pulsating fluid.
- the body is completely permeable and absorbs the fluid characteristically (such as blood), then the pulsating current can be measured by absorption changes by means of spectroscopic methods.
- the recording of the temporal course of the intensity takes place with a resolution which supports evaluation-relevant vital kinematic effects per interval with at least five measuring points.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Biophysics (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Emergency Medicine (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010526218A JP2011506915A (ja) | 2007-09-26 | 2008-09-26 | 生体組織から分光検査信号を収集する方法及び測定機器 |
EP08802671A EP2198270A1 (de) | 2007-09-26 | 2008-09-26 | Verfahren und messeinrichtung zur erhebung spektrometrischer messsignale aus vitalem gewebe |
US12/680,047 US20100298715A1 (en) | 2007-09-26 | 2008-09-26 | Method and measuring instrument for collecting spectrometric test signals from living tissue |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007046257 | 2007-09-26 | ||
DE102007046257.5 | 2007-09-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009043554A1 true WO2009043554A1 (de) | 2009-04-09 |
Family
ID=40328532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/008226 WO2009043554A1 (de) | 2007-09-26 | 2008-09-26 | Verfahren und messeinrichtung zur erhebung spektrometrischer messsignale aus vitalem gewebe |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100298715A1 (de) |
EP (1) | EP2198270A1 (de) |
JP (1) | JP2011506915A (de) |
KR (1) | KR20100075553A (de) |
DE (1) | DE102008049078A1 (de) |
WO (1) | WO2009043554A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2399509A1 (de) | 2010-06-22 | 2011-12-28 | Senspec GmbH | Vorrichtung und Verfahren zum Erkennen und Überwachen von physiologischen Blutwerten |
WO2011161102A1 (de) | 2010-06-22 | 2011-12-29 | Senspec Gmbh | Vorrichtung und verfahren zum erkennen und überwachen von inhaltsstoffen oder eigenschaften eines messmediums, insbesondere von physiologischen blutwerten |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0522674A2 (de) * | 1991-07-12 | 1993-01-13 | Mark R. Robinson | Oximeter zur zuverlässigen klinischen Bestimmung der Blutsauerstoffsättigung in einem Fötus |
US6216021B1 (en) * | 1999-06-04 | 2001-04-10 | The Board Of Trustees Of The University Of Illinois | Method for measuring absolute saturation of time-varying and other hemoglobin compartments |
US20060167348A1 (en) * | 2005-01-24 | 2006-07-27 | Arnold Mark A | Method for generating a net analyte signal calibration model and uses thereof |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58113736A (ja) * | 1981-12-28 | 1983-07-06 | Masaaki Motoi | 測光方法及びその装置 |
US6119031A (en) * | 1996-11-21 | 2000-09-12 | Boston Scientific Corporation | Miniature spectrometer |
US6002952A (en) * | 1997-04-14 | 1999-12-14 | Masimo Corporation | Signal processing apparatus and method |
US6393310B1 (en) * | 1998-09-09 | 2002-05-21 | J. Todd Kuenstner | Methods and systems for clinical analyte determination by visible and infrared spectroscopy |
US7519406B2 (en) * | 2004-04-28 | 2009-04-14 | Sensys Medical, Inc. | Noninvasive analyzer sample probe interface method and apparatus |
JP2004248819A (ja) * | 2003-02-19 | 2004-09-09 | Citizen Watch Co Ltd | 血液分析装置 |
-
2008
- 2008-09-26 EP EP08802671A patent/EP2198270A1/de not_active Withdrawn
- 2008-09-26 DE DE102008049078A patent/DE102008049078A1/de active Pending
- 2008-09-26 JP JP2010526218A patent/JP2011506915A/ja active Pending
- 2008-09-26 WO PCT/EP2008/008226 patent/WO2009043554A1/de active Application Filing
- 2008-09-26 KR KR1020107009108A patent/KR20100075553A/ko not_active Application Discontinuation
- 2008-09-26 US US12/680,047 patent/US20100298715A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0522674A2 (de) * | 1991-07-12 | 1993-01-13 | Mark R. Robinson | Oximeter zur zuverlässigen klinischen Bestimmung der Blutsauerstoffsättigung in einem Fötus |
US6216021B1 (en) * | 1999-06-04 | 2001-04-10 | The Board Of Trustees Of The University Of Illinois | Method for measuring absolute saturation of time-varying and other hemoglobin compartments |
US20060167348A1 (en) * | 2005-01-24 | 2006-07-27 | Arnold Mark A | Method for generating a net analyte signal calibration model and uses thereof |
Non-Patent Citations (4)
Title |
---|
HEISE H M ET AL: "NEAR-INFRARED REFLECTANCE SPECTROMETRY FOR NONINVASIVE MONITORING OF METABOLITES", CLINICAL CHEMISTRY AND LABORATORY MEDICINE, WALTER DE GRUYTER UND CO, vol. 38, no. 2, 1 February 2000 (2000-02-01), pages 137 - 145, XP008007586, ISSN: 1434-6621 * |
LAFRANCE D ET AL: "In vivo lactate measurement in human tissue by near-infrared diffuse reflectance spectroscopy", VIBRATIONAL SPECTROSCOPY, ELSEVIER SCIENCE, AMSTERDAM, NL, vol. 36, no. 2, 6 December 2004 (2004-12-06), pages 195 - 202, XP004659874, ISSN: 0924-2031 * |
NIEDORF F ET AL: "Noninvasive reflection spectra provide quantitative information about the spatial distribution of skin chromophores", MEDICAL PHYSICS, AIP, MELVILLE, NY, US, vol. 32, no. 5, 14 April 2005 (2005-04-14), pages 1297 - 1307, XP012075331, ISSN: 0094-2405 * |
STÜCKER M; STEINBRÜGGE J; IHRIG C; HOFFMANN K; IHRIG D; RÖCHLING A; LÜBBERS D W; JUNGMANN H; ALTMEYER P: "Rhythmical variations of haemoglobin oxygenation in cutaneous capillaries", ACTA DERMATO-VENEREOLOGICA, vol. 78, 1 November 1998 (1998-11-01), pages 408 - 411, XP007907104 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2399509A1 (de) | 2010-06-22 | 2011-12-28 | Senspec GmbH | Vorrichtung und Verfahren zum Erkennen und Überwachen von physiologischen Blutwerten |
WO2011161102A1 (de) | 2010-06-22 | 2011-12-29 | Senspec Gmbh | Vorrichtung und verfahren zum erkennen und überwachen von inhaltsstoffen oder eigenschaften eines messmediums, insbesondere von physiologischen blutwerten |
Also Published As
Publication number | Publication date |
---|---|
US20100298715A1 (en) | 2010-11-25 |
KR20100075553A (ko) | 2010-07-02 |
JP2011506915A (ja) | 2011-03-03 |
EP2198270A1 (de) | 2010-06-23 |
DE102008049078A1 (de) | 2009-04-09 |
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