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1. WO2008048402 - APPARATUS FOR CARIES DETECTION

Publication Number WO/2008/048402
Publication Date 24.04.2008
International Application No. PCT/US2007/019805
International Filing Date 11.09.2007
IPC
A61B 5/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
G01J 3/44 2006.01
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28Investigating the spectrum
44Raman spectrometry; Scattering spectrometry
A61B 1/247 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
24for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
247with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors
A61B 1/04 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
04combined with photographic or television appliances
A61B 1/24 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
24for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
G01B 9/02 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9Instruments as specified in the subgroups and characterised by the use of optical measuring means
02Interferometers
CPC
A61B 1/00186
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
00163Optical arrangements
00186with imaging filters
A61B 1/043
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
04combined with photographic or television appliances
043for fluorescence imaging
A61B 1/0615
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
06with illuminating arrangements
0615for radial illumination
A61B 1/0623
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
06with illuminating arrangements
0623for off-axis illumination
A61B 1/0638
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
06with illuminating arrangements
0638providing two or more wavelengths
A61B 1/247
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
24for the mouth, i.e. stomatoscopes, e.g. with tongue depressors
247with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors
Applicants
  • CARESTREAM HEALTH, INC. [US]/[US] (AllExceptUS)
  • LIANG, Rongguang [CN]/[US] (UsOnly)
  • WONG, Victor, C. [US]/[US] (UsOnly)
  • BRIDGES, Mark, Edward [US]/[US] (UsOnly)
  • MARCUS, Michael, Alan [US]/[US] (UsOnly)
  • PATTON, David, L. [US]/[US] (UsOnly)
  • BURNS, Peter, David [US]/[US] (UsOnly)
  • MCLAUGHLIN, Paul, O. [US]/[US] (UsOnly)
Inventors
  • LIANG, Rongguang
  • WONG, Victor, C.
  • BRIDGES, Mark, Edward
  • MARCUS, Michael, Alan
  • PATTON, David, L.
  • BURNS, Peter, David
  • MCLAUGHLIN, Paul, O.
Common Representative
  • PARULSKI, Susan, L.
Priority Data
11/549,20813.10.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS FOR CARIES DETECTION
(FR) APPAREIL POUR DÉTECTER DES CARIES
Abstract
(EN)
An apparatus for imaging a tooth having a light source with a first spectral range and a second spectral range. A polarizing beamsplitter (18) light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the first and second polarization states are orthogonal. A first lens (22) in the return path directs image-bearing light from the tooth, through the polarizing beamsplitter (18), toward the sensor (68), and obtains image data from the redirected portion of the light having the second polarization state. A long-pass filter ( 15) in the return path attenuates light in the second spectral range. Control logic enables the sensor to obtain either the reflectance image or the fluorescence image.
(FR)
L'invention concerne un appareil permettant d'obtenir l'image d'une dent. L'appareil comporte une source de lumière pourvue d'un premier domaine spectral et d'un second domaine spectral. Dans un premier état de polarisation, le séparateur de faisceau de polarisation (18) dirige de la lumière vers la dent; dans un second état de polarisation, ledit séparateur dirige de la lumière à partir de la dent, sur un trajet de retour, vers un capteur (68), le premier et le second état de polarisation étant orthogonaux. Une première lentille (22) comprises sur le trajet de retour dirige de la lumière porteuse d'image à partir de la dent, à travers le séparateur de faisceau de polarisation (18), vers le capteur (68), et obtient des données d'image provenant de la partie dirigée de la lumière ayant le second état de polarisation. Un filtre (15) dans le trajet de retour atténue la lumière dans le second domaine spectral. Une logique de contrôle permet au capteur d'obtenir l'image de réflectance ou l'image de fluorescence.
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