US6070096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescence detecting apparatus
Assignee: Fujifilm Corp
•
Filing: 1998-02-19
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Granted: 2000-05-30
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Expires: 2018-02-19
Abstract
Abstract A region of interest in a living body is exposed to excitation light, which causes it to produce fluorescence. The fluorescence is separated with respect to desired wavelength ranges and detected. A first detector detects an entire fluorescence component or a fluorescence sum component, which is the sum of a fluorescence component of a comparatively short wavelength region and a fluorescence component of a comparatively long wavelength region. A second detector detects a fluorescence component of a comparatively long wavelength region or a fluorescence difference component, which is the difference between a fluorescence component of a comparatively short wavelength region and a fluorescence component of a comparatively long wavelength region. The output from the first detector and the output from the second detector are divided by each other. The fluorescence intensity depending upon the distance with respect to the region of interest is thus corrected such that no error may occur in making an operation.
Inventors
- 👤 Katsumi Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:49
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/44; G01J3/4406; A; A61; A61B; A61B1/00; A61B1/00002; A61B1/00004; A61B1/00009; A61B1/00163; A61B1/00186; A61B1/04; A61B1/043; A61B1/06; A61B1/0638; A61B5/00; A61B5/0059; A61B5/0071; A61B5/0082; A61B5/0084; A61B1/0646
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
341 words
A fluorescence detecting apparatus, comprising: i) an excitation light irradiating means for irradiating excitation light to a region of interest in a living body, said excitation light having wavelengths falling within an excitation wavelength range for an intrinsic dye in the living body, which intrinsic dye is capable of producing fluorescence when it is excited with said excitation light, ii) a first fluorescence detecting means for detecting a first fluorescence component, which is either one of: a) an entire intrinsic fluorescence component having wavelengths falling within a visible wavelength range, which contains a comparatively short wavelength range and a comparatively long wavelength range among the wavelength range of intrinsic fluorescence, that is produced by said intrinsic dye in said region of interest in the living body, and b) a fluorescence sum component, which is the sum of a fluorescence component having wavelengths falling within a part of the comparatively short wavelength range among the wavelength range of the intrinsic fluorescence, that is produced by said intrinsic dye in said region of interest in the living body, and a fluorescence component having wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, iii) a second fluorescence detecting means for detecting a second fluorescence component, which is either one of: a) a fluorescence component having wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, and b) a fluorescence difference component, which is the difference between a fluorescence component, that have wavelengths falling within a part of the comparatively short wavelength range among the wavelength range of the intrinsic fluorescence, and a fluorescence component, that has wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, and iv) a division means for carrying out a division of said first fluorescence component, which has been detected by said first fluorescence detecting means, by said second fluorescence component, which has been detected by said second fluorescence detecting means.
Claim 2
Dependent Claim
341 words
A fluorescence detecting apparatus, comprising: i) an excitation light irradiating means for irradiating excitation light to a region of interest in a living body, said excitation light having wavelengths falling within an excitation wavelength range for an intrinsic dye in the living body, which intrinsic dye is capable of producing fluorescence when it is excited with said excitation light, ii) a first fluorescence detecting means for detecting a first fluorescence component, which is either one of: a) an entire intrinsic fluorescence component having wavelengths falling within a visible wavelength range, which contains a comparatively short wavelength range and a comparatively long wavelength range among the wavelength range of intrinsic fluorescence, that is produced by said intrinsic dye in said region of interest in the living body, and b) a fluorescence sum component, which is the sum of a fluorescence component having wavelengths falling within a part of the comparatively short wavelength range among the wavelength range of the intrinsic fluorescence, that is produced by said intrinsic dye in said region of interest in the living body, and a fluorescence component having wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, iii) a second fluorescence detecting means for detecting a second fluorescence component, which is either one of: a) a fluorescence component having wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, and b) a fluorescence difference component, which is the difference between a fluorescence component, that have wavelengths falling within a part of the comparatively short wavelength range among the wavelength range of the intrinsic fluorescence, and a fluorescence component, that has wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, and iv) a division means for carrying out a division of said first fluorescence component, which has been detected by said first fluorescence detecting means, by said second fluorescence component, which has been detected by said second fluorescence detecting means.
Claim 3
Dependent Claim
38 words
An apparatus as defined in claim 1 wherein light having wavelengths falling within a wavelength range in the vicinity of an excitation peak wavelength for said intrinsic dye in the living body is employed as said excitation light.
Claim 4
Dependent Claim
48 words
An apparatus as defined in claim 1 wherein each of said first fluorescence detecting means and said second fluorescence detecting means carries out two-dimensional detection of the fluorescence, which is produced from said region of interest so as to obtain a fluorescence image of said region of interest.
Claim 5
Dependent Claim
332 words
A fluorescence detecting apparatus, comprising: i) an excitation light irradiating projector for irradiating excitation light to a region of interest in a living body, said excitation light having wavelengths falling within an excitation wavelength range for an intrinsic dye in the living body, which intrinsic dye is capable of producing fluorescence when it is excited with said excitation light, ii) a first fluorescence detector for detecting a first fluorescence component, which is either one of: a) an entire intrinsic fluorescence component having wavelengths falling within a visible wavelength range, which contains a comparatively short wavelength range and a comparatively long wavelength range among the wavelength range of intrinsic fluorescence, that is produced by said intrinsic dye in said region of interest in the living body, and b) a fluorescence sum component, which is the sum of a fluorescence component having wavelengths falling within a part of the comparatively short wavelength range among the wavelength range of the intrinsic fluorescence, that is produced by said intrinsic dye in said region of interest in the living body, and a fluorescence component having wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, iii) a second fluorescence detector for detecting a second fluorescence component, which is either one of: a) a fluorescence component having wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, and b) a fluorescence difference component, which is the difference between a fluorescence component, that have wavelengths falling within a part of the comparatively short wavelength range among the wavelength range of the intrinsic fluorescence, and a fluorescence component, that has wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, and iv) a divider for dividing said first fluorescence component, which has been detected by said first fluorescence detector, by said second fluorescence component, which has been detected by said second fluorescence detector.
Claim 6
Dependent Claim
332 words
A fluorescence detecting apparatus, comprising: i) an excitation light irradiating projector for irradiating excitation light to a region of interest in a living body, said excitation light having wavelengths falling within an excitation wavelength range for an intrinsic dye in the living body, which intrinsic dye is capable of producing fluorescence when it is excited with said excitation light, ii) a first fluorescence detector for detecting a first fluorescence component, which is either one of: a) an entire intrinsic fluorescence component having wavelengths falling within a visible wavelength range, which contains a comparatively short wavelength range and a comparatively long wavelength range among the wavelength range of intrinsic fluorescence, that is produced by said intrinsic dye in said region of interest in the living body, and b) a fluorescence sum component, which is the sum of a fluorescence component having wavelengths falling within a part of the comparatively short wavelength range among the wavelength range of the intrinsic fluorescence, that is produced by said intrinsic dye in said region of interest in the living body, and a fluorescence component having wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, iii) a second fluorescence detector for detecting a second fluorescence component, which is either one of: a) a fluorescence component having wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, and b) a fluorescence difference component, which is the difference between a fluorescence component, that have wavelengths falling within a part of the comparatively short wavelength range among the wavelength range of the intrinsic fluorescence, and a fluorescence component, that has wavelengths falling within a part of the comparatively long wavelength range among the wavelength range of the intrinsic fluorescence, and iv) a divider for dividing said first fluorescence component, which has been detected by said first fluorescence detector, by said second fluorescence component, which has been detected by said second fluorescence detector.
Claim 7
Dependent Claim
38 words
An apparatus as defined in claim 4 wherein light having wavelengths falling within a wavelength range in the vicinity of an excitation peak wavelength for said intrinsic dye in the living body is employed as said excitation light.
Claim 8
Dependent Claim
48 words
An apparatus as defined in claim 4 wherein each of said first fluorescence detecting means and said second fluorescence detecting means carries out two-dimensional detection of the fluorescence, which is produced from said region of interest so as to obtain a fluorescence image of said region of interest.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-05-30 | 2003-11-29 | 2004-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-30 | 2007-11-29 | 2008-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-30 | 2011-11-29 | 2012-05-30 | $7700.00 | Window Closed / Lapsed |