EP2558845A2 - Messanordnung zur aufzeichnung eines spektrums, insbesondere aus vitalem gewebe - Google Patents
Messanordnung zur aufzeichnung eines spektrums, insbesondere aus vitalem gewebeInfo
- Publication number
- EP2558845A2 EP2558845A2 EP11719168A EP11719168A EP2558845A2 EP 2558845 A2 EP2558845 A2 EP 2558845A2 EP 11719168 A EP11719168 A EP 11719168A EP 11719168 A EP11719168 A EP 11719168A EP 2558845 A2 EP2558845 A2 EP 2558845A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- head structure
- measuring head
- measuring
- measuring arrangement
- arrangement according
- 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- Withdrawn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
- 238000001228 spectrum Methods 0.000 title description 5
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000013307 optical fiber Substances 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000000523 sample Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
-
- 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
- A61B5/145—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
- A61B5/1495—Calibrating or testing of in-vivo probes
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6835—Supports or holders, e.g., articulated arms
-
- 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
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
- G01N21/278—Constitution of standards
-
- 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
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
- G01N21/474—Details of optical heads therefor, e.g. using optical fibres
Definitions
- the invention is directed to a measuring arrangement for collecting measuring signals indicative of a spectrum, in particular from vital tissue, for example for determining the presence, concentration or substance composition of body fluids as well as possibly only temporarily vessel-bound substances.
- spectrometers by which an analysis of temporarily vascular-bound substances can be accomplished by these spectrometers are attached to a corresponding tissue region of a living being to be examined and recorded on these mobile spectrometer respectively the spectrum of emerging from the tissue remission light. On the basis of the spectrum thus recorded, a wide variety of substances present in the examined tissue region can be detected.
- These spectrometers can be constructed as classical spectrometers, in which a decomposition of the incident light is accomplished by optical means and the intensity of the decomposed light is measured in association with the wavelength. To avoid moving parts, the spectrometers can be designed such that the light, which has been split down according to its wavelength, is fed to a CCD array and analyzed for its intensity.
- the invention has for its object to provide solutions by which it is possible to perform spectrometric measurements with particularly high reliability.
- a mobile spectrometer device which comprises a measuring head structure, wherein the measuring head structure is designed such that it can be attached to a tissue section for carrying out the spectrometric measurement, and
- a socket element which forms a receiving interior in which the measuring head structure can be inserted
- a calibration medium made of a cloudy material is arranged in a bottom region bounding the receiving interior
- the socket element and the measuring head structure are designed such that after insertion of the measuring head structure into the socket element, the calibration medium is sealed in a light-tight manner with respect to the surroundings.
- the calibration medium is releasably secured in the female member.
- the calibration medium is preferably designed in such a way that, in terms of its substance composition and Streuch decisionizing this substantially corresponds to the properties of the skin.
- the calibration medium can be designed as a platelet and is preferably designed so that it has a thickness of about 6 mm.
- Several such calibration plates can be kept in a set.
- the calibration plates are preferably designed so that they form a volume emitter whose scattering behavior corresponds to the behavior of human skin.
- These insert tiles can each be doped with certain substances, so that for special investigations, the spectrometer can be calibrated on the basis of a cloudy sample on this substance.
- the measuring head structure of the spectrometer is preferably designed such that it has a first light guide, a second light guide with a light source device and a third light guide with a
- Spectrometer device is coupled, said optical fibers open into an area provided by the measuring head structure attachment surface, and wherein the mouth positions of the optical fibers are coordinated such that the distances of the mouth positions of the first and second light guide from the mouth position of the third light guide differ.
- the measuring head structure is designed such that the light guides open substantially perpendicularly from behind into the attachment surface.
- the distance of the mouth position of the first light guide from the mouth position of the third light guide is preferably greater than the distance of the mouth position of the second light guide from the mouth position of the third light guide.
- the distance of the mouth position of the first optical waveguide from the mouth position of the third optical waveguide preferably corresponds to the distance of the mouth position of the first optical waveguide to the mouth position of the second optical waveguide.
- a particularly advantageous design of the measuring head structure for measurements on vital human tissue is such that the distance of the mouth position of the first light guide from the mouth position of the third light guide is 3.6 mm.
- the distance of the mouth position of the second light guide from the mouth position of the third light guide is in this case preferably 2.3 mm.
- the light source device is designed such that it comprises two separate LED light sources which are each assigned to one of the light guides.
- the light guides are preferably designed as iron-free multifilaments.
- FIG. 1 shows a sketch to illustrate the structure of a mobile measuring device according to the invention.
- FIG. 1 shows a measuring arrangement for the spectrometric analysis of vital tissue.
- the measuring arrangement comprises a measuring head 1.
- the measuring head 1 comprises a first light guide LI, a second light guide L2 which are coupled in the region of a base unit 2 to a light source device Q1, Q2.
- the measuring head 1 furthermore has a third optical waveguide L3 which is coupled to a spectrometer device 7 likewise provided in the base device.
- These light guides LI, L2, L3 open into a provided by the probe head structure 1 attachment surface A, and wherein the Muzzle positions of the light guides LI, L2, L3 are coordinated with each other so that the distances a, b of the mouth positions of the first and second light guides LI, L2, significantly different from the mouth position of the third light guide L3, preferably at least 0.4mm.
- the light guides LI, L2 and L3 are integrated into the measuring head structure 1 in such a way that they open into the attachment surface A substantially perpendicularly from behind.
- the top surface A or the mouth windows of the light guides LI, L2, L3 may be provided with a seal or a thin window structure, so that the optical fibers are optically accessible, and also mechanically protected.
- the distance of the mouth position of the first optical fiber LI from the mouth position of the third optical fiber L3 is greater than the distance of the mouth position of the second optical fiber L2 from the mouth position of the third optical fiber L3
- Fiber optic L3 The distance of the mouth position of the first light guide LI from the mouth position of the third light guide L3 here corresponds approximately to the distance of the mouth position of the first light guide LI to the mouth position of the second light guide L2.
- the mouth positions of the light guides LI, L2, L3 here form the vertices of a triangle wherein an internal angle ⁇ defined between the legs tapered to the mouth position of the third light guide L3 lies in the range of 79 ° -94 °, preferably 89 °.
- the distance of the mouth position of the first light guide LI from the mouth position of the third light guide L3 in the specific embodiment is preferably 3.6 mm.
- the distance of the mouth position of the second light guide L2 of the mouth position of the third light guide L3 is then preferably 2.3 mm.
- the light source device comprises two separate LED light sources Q1, Q2 which are each associated with one of the light guides LI, L2.
- the light guides LI, L2 are designed as iron-free multifilaments and integrated into a sheath not shown here with strain relief.
- the spectrometer device comprises a CCD array 7 by means of which the spectral distribution of the intensity of the light detected via the third optical waveguide L3 can be detected by association with the wavelength.
- the attachment surface is preferably formed as a substantially circular or slightly elliptical surface.
- the mouth positions of the light guides LI, L2, L3 are preferably set so that the centroid of a corresponding defined by these mouth positions Dreick substantially coincides with the centroid of the top surface.
- the measuring head structure 1 is designed such that it can be attached to a tissue section for carrying out the spectrometric measurement.
- the measuring arrangement comprises a socket element 3 which forms a receiving internal space 4 in which the measuring head structure 1 can be inserted.
- a calibration medium 5 made of a cloudy material is arranged in a bottom area bounding the receiving interior 4.
- the calibration medium 5 forms a volume radiator.
- the socket element 3 and the measuring head structure 1 are designed in such a way that, after insertion of the measuring head structure 1 into the socket element 3, the calibration medium 5 is sealed in a light-tight manner with respect to the surroundings.
- a sealing device 6 is further provided.
- the calibration medium 5 is releasably secured in the socket member 3.
- the calibration medium 5 is designed such that this in its composition and Streu decisionizing; essentially corresponds to the properties of the skin.
- the calibration medium 5 is designed as an insert plate and has a thickness of about 6 mm.
- the measuring head structure is inserted into the socket element in such a way that the attachment surface A is seated on the calibration medium.
- the calibration or calibration of the spectrometer device, or the connected signal processing device can be handled largely automated by resorting to a preferably stored in the meter signal processing procedure by a made after insertion of the measuring head 1 in the socket element 3 measurement and a corresponding interface this measurement as calibration , Calibration or reference measurement.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Optics & Photonics (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Dermatology (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- High Energy & Nuclear Physics (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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010014702A DE102010014702A1 (de) | 2010-04-12 | 2010-04-12 | Messanordnung zur Aufzeichnung eines Spektrums, insbesondere auf vitalem Gewebe |
PCT/EP2011/001791 WO2011128053A2 (de) | 2010-04-12 | 2011-04-11 | Messanordnung zur aufzeichnung eines spektrums, insbesondere aus vitalem gewebe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2558845A2 true EP2558845A2 (de) | 2013-02-20 |
Family
ID=44315111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11719168A Withdrawn EP2558845A2 (de) | 2010-04-12 | 2011-04-11 | Messanordnung zur aufzeichnung eines spektrums, insbesondere aus vitalem gewebe |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130123643A1 (de) |
EP (1) | EP2558845A2 (de) |
JP (1) | JP2013540257A (de) |
CN (1) | CN103080727A (de) |
DE (1) | DE102010014702A1 (de) |
WO (1) | WO2011128053A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014105267A1 (de) * | 2014-04-14 | 2015-10-15 | Heraeus Medical Gmbh | Polymethylmethacrylat-Knochenzement |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4570638A (en) * | 1983-10-14 | 1986-02-18 | Somanetics Corporation | Method and apparatus for spectral transmissibility examination and analysis |
US5414258A (en) * | 1993-11-22 | 1995-05-09 | Angstrom Technologies, Inc. | Apparatus and method for calibration of fluorescence detectors |
CA2209240C (en) * | 1995-01-03 | 2009-07-21 | Non-Invasive Technology, Inc. | Optical coupler for in vivo examination of biological tissue |
US5792049A (en) * | 1996-01-17 | 1998-08-11 | Spectrx, Inc. | Spectroscopic system with disposable calibration device |
US5902246A (en) * | 1996-03-26 | 1999-05-11 | Lifespex, Incorporated | Method and apparatus for calibrating an optical probe |
US6119031A (en) * | 1996-11-21 | 2000-09-12 | Boston Scientific Corporation | Miniature spectrometer |
US5852494A (en) * | 1997-03-17 | 1998-12-22 | Polartechnics Limited | Apparatus for checking the calibration of optical probes |
US6667803B1 (en) * | 1999-06-03 | 2003-12-23 | Hutchinson Technology, Inc. | Calibration mode recognition and calibration algorithm for spectrophotometric instrument |
US6377840B1 (en) * | 1999-06-03 | 2002-04-23 | Hutchinson Technology Incorporated | Signal acquisition and processing system for reduced output signal drift in a spectrophotometric instrument |
AU2002251877A1 (en) * | 2001-02-06 | 2002-08-19 | Argose, Inc. | Layered calibration standard for tissue sampling |
WO2005112745A1 (en) * | 2004-05-18 | 2005-12-01 | Hutchinson Technology Incorporated | OPTIMIZED WAVELENGTH GAP FOR IMPROVED StO2 MEASUREMENT |
US7288759B2 (en) * | 2004-09-09 | 2007-10-30 | Beth Israel Deaconess Medical Center, Inc. | Tissue-like phantoms |
-
2010
- 2010-04-12 DE DE102010014702A patent/DE102010014702A1/de not_active Withdrawn
-
2011
- 2011-04-11 JP JP2013504156A patent/JP2013540257A/ja not_active Withdrawn
- 2011-04-11 US US13/639,362 patent/US20130123643A1/en not_active Abandoned
- 2011-04-11 EP EP11719168A patent/EP2558845A2/de not_active Withdrawn
- 2011-04-11 CN CN2011800289590A patent/CN103080727A/zh active Pending
- 2011-04-11 WO PCT/EP2011/001791 patent/WO2011128053A2/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011128053A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011128053A2 (de) | 2011-10-20 |
CN103080727A (zh) | 2013-05-01 |
US20130123643A1 (en) | 2013-05-16 |
WO2011128053A3 (de) | 2011-12-29 |
DE102010014702A1 (de) | 2011-10-13 |
JP2013540257A (ja) | 2013-10-31 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20121112 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: K. A. SCHMERSAL HOLDING GMBH & CO. KG |
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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: 20171103 |