CA2042075A1 - Endoscopic imaging system - Google Patents

Endoscopic imaging system

Info

Publication number
CA2042075A1
CA2042075A1 CA2042075A CA2042075A CA2042075A1 CA 2042075 A1 CA2042075 A1 CA 2042075A1 CA 2042075 A CA2042075 A CA 2042075A CA 2042075 A CA2042075 A CA 2042075A CA 2042075 A1 CA2042075 A1 CA 2042075A1
Authority
CA
Canada
Prior art keywords
tissue
autofluorescence
light
abnormal
filtered
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.)
Granted
Application number
CA2042075A
Other languages
French (fr)
Other versions
CA2042075C (en
Inventor
Branko Palcic
Calum Macaulay
Bruno Jaggi
Stephen Lam
Jaclyn Hung
Amedeus Edward Profio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novadaq Technologies ULC
Original Assignee
Branko Palcic
Calum Macaulay
Bruno Jaggi
Stephen Lam
Jaclyn Hung
Amedeus Edward Profio
Xillix Technologies Corp.
Novadaq Technologies Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25674604&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2042075(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to CA002042075A priority Critical patent/CA2042075C/en
Application filed by Branko Palcic, Calum Macaulay, Bruno Jaggi, Stephen Lam, Jaclyn Hung, Amedeus Edward Profio, Xillix Technologies Corp., Novadaq Technologies Inc. filed Critical Branko Palcic
Priority to DE69212382T priority patent/DE69212382T2/en
Priority to EP92850098A priority patent/EP0512965B1/en
Priority to AT92850098T priority patent/ATE140600T1/en
Priority to JP11640192A priority patent/JP3317409B2/en
Publication of CA2042075A1 publication Critical patent/CA2042075A1/en
Priority to US08/428,494 priority patent/US5507287A/en
Publication of CA2042075C publication Critical patent/CA2042075C/en
Application granted granted Critical
Priority to JP2002131033A priority patent/JP3810337B2/en
Priority to JP2003129568A priority patent/JP3823096B2/en
Priority to JP2005138269A priority patent/JP2005312979A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments 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
    • A61B1/04—Instruments 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 combined with photographic or television appliances
    • A61B1/043—Instruments 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 combined with photographic or television appliances for fluorescence imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments 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
    • A61B1/00163—Optical arrangements
    • A61B1/00186—Optical arrangements with imaging filters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments 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
    • A61B1/04—Instruments 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 combined with photographic or television appliances
    • A61B1/042—Instruments 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 combined with photographic or television appliances characterised by a proximal camera, e.g. a CCD camera
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments 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
    • A61B1/06—Instruments 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 with illuminating arrangements
    • A61B1/0638—Instruments 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 with illuminating arrangements providing two or more wavelengths
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments 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
    • A61B1/06—Instruments 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 with illuminating arrangements
    • A61B1/0646—Instruments 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 with illuminating arrangements with illumination filters
    • 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
    • A61B5/0071—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by measuring fluorescence emission
    • 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
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0084—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments 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
    • A61B1/06—Instruments 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 with illuminating arrangements
    • A61B1/063—Instruments 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 with illuminating arrangements for monochromatic or narrow-band illumination
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/645—Specially adapted constructive features of fluorimeters
    • G01N2021/6463—Optics

Abstract

Apparatus for imaging diseases in tissue comprising a light source for generating excitation light that includes wavelengths capable of generating characteristic autofluorescence for abnormal and normal tissue. A
fibreoptic illuminating light guide is used to illuminate tissue with light that includes at least the excitation light thereby exciting the tissue to emit the characteristic autofluorescence. An imaging bundle collects emitted autofluorescence light from the tissue. The autofluorescence light is filtered into spectral bands in which the autofluorescence intensity for abnormal tissue is substantially different from normal tissue and the autofluorescence intensity for abnormal tissue is substantially similar to normal tissue. An optical system is used to intercept the filtered autofluorescence light to acquire at least two filtered emitted autofluorescence images of the tissue. The acquired images are displayed in real time on a display monitor in such a manner as to delineate abnormal and normal tissue.
CA002042075A 1991-05-08 1991-05-08 Endoscopic imaging system Expired - Lifetime CA2042075C (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CA002042075A CA2042075C (en) 1991-05-08 1991-05-08 Endoscopic imaging system
DE69212382T DE69212382T2 (en) 1991-05-08 1992-05-05 Endoscopic imaging system for diseased tissue
EP92850098A EP0512965B1 (en) 1991-05-08 1992-05-05 Endoscopic imaging system for diseased tissue
AT92850098T ATE140600T1 (en) 1991-05-08 1992-05-05 ENDOSCOPIC IMAGING SYSTEM FOR DISEASE TISSUE
JP11640192A JP3317409B2 (en) 1991-05-08 1992-05-08 Imaging device
US08/428,494 US5507287A (en) 1991-05-08 1995-04-27 Endoscopic imaging system for diseased tissue
JP2002131033A JP3810337B2 (en) 1991-05-08 2002-05-02 Imaging device
JP2003129568A JP3823096B2 (en) 1991-05-08 2003-05-07 Imaging device
JP2005138269A JP2005312979A (en) 1991-05-08 2005-05-11 Imaging device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002042075A CA2042075C (en) 1991-05-08 1991-05-08 Endoscopic imaging system
US08/428,494 US5507287A (en) 1991-05-08 1995-04-27 Endoscopic imaging system for diseased tissue

Publications (2)

Publication Number Publication Date
CA2042075A1 true CA2042075A1 (en) 1992-11-09
CA2042075C CA2042075C (en) 2001-01-23

Family

ID=25674604

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002042075A Expired - Lifetime CA2042075C (en) 1991-05-08 1991-05-08 Endoscopic imaging system

Country Status (6)

Country Link
US (1) US5507287A (en)
EP (1) EP0512965B1 (en)
JP (1) JP3317409B2 (en)
AT (1) ATE140600T1 (en)
CA (1) CA2042075C (en)
DE (1) DE69212382T2 (en)

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