Patent US5539207A successfully refreshed from Google Patents.
US5539207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of identifying tissue
Assignee: National Research Council Canada
•
Filing: 1994-07-19
•
Granted: 1996-07-23
•
Expires: 2014-07-19
Abstract
Abstract A method of identifying tissue involves determining the infrared spectrum of a tissue sample in at least one frequency band, and comparing the infrared spectrum of the sample with a library of stored infrared spectra of known tissue types to find the closest match.
Inventors
- 👤 Patrick T. T. Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:34
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N2021/3595
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
60 words
A method of identifying tissue comprising the steps of determining the infrared spectrum of a tissue sample over a range of frequencies in at least one frequency band, and comparing the infrared spectrum of said sample with a library of stored infrared spectra of known tissue types by visual comparison or using pattern recognition techniques to find the closest match.
Claim 2
Independent Claim
60 words
A method of identifying tissue comprising the steps of determining the infrared spectrum of a tissue sample over a range of frequencies in at least one frequency band, and comparing the infrared spectrum of said sample with a library of stored infrared spectra of known tissue types by visual comparison or using pattern recognition techniques to find the closest match.
Claim 3
Dependent Claim
16 words
A method as claimed in claim 1, wherein said infrared spectra are determined by FT-IR spectroscopy.
Claim 4
Dependent Claim
25 words
A method as claimed in claim 1, wherein said infrared spectroscopy is carried out under pressure, and said infrared spectra include the pressure dependence thereof.
Claim 5
Dependent Claim
31 words
A method as claimed in claim 1, wherein said known tissue types are selected from the group consisting of: the colon epithelium, lamina propria, the cervical epithelium, and cervical connective tissue.
Claim 6
Dependent Claim
21 words
A method as claimed in claim 1, wherein the infrared spectra of said known tissue types are stored in a memory.
Claim 7
Dependent Claim
13 words
A method as claimed in claim 1, wherein said tissue is human tissue.
Claim 8
Independent Claim
68 words
A method of identifying non-malignant tissue, comprising the steps of determining the infrared spectrum of a tissue sample over a range of frequencies in at least one frequency band; comparing said infrared spectrum with a library of infrared spectra of known normal tissue types by visual comparison or using pattern recognition techniques; and identifying the sample as non-malignant if it substantially matches one of said know tissue types.
Claim 9
Independent Claim
68 words
A method of identifying non-malignant tissue, comprising the steps of determining the infrared spectrum of a tissue sample over a range of frequencies in at least one frequency band; comparing said infrared spectrum with a library of infrared spectra of known normal tissue types by visual comparison or using pattern recognition techniques; and identifying the sample as non-malignant if it substantially matches one of said know tissue types.
Claim 10
Dependent Claim
16 words
A method as claimed in claim 7, wherein said infrared spectra are determined by FT-IR spectroscopy.
Claim 11
Dependent Claim
25 words
A method as claimed in claim 7, wherein said infrared spectroscopy is carried out under pressure, and said infrared spectra include the pressure dependence thereof.
Claim 12
Dependent Claim
13 words
A method as claimed in claim 7, wherein said tissue is human tissue.
Claim 13
Independent Claim
108 words
An apparatus for identifying tissue comprising: a) a first memory for storing the infrared spectra of a plurality of known tissue types in at least one frequency band; b) an infrared spectrometer for determining the infrared spectrum of a tissue sample over a range of frequencies in at least one frequency band; c) a second memory for storing said infrared spectrum of said tissue sample; d) a processor for comparing the infrared spectra stored in said first and second memories using pattern recognition techniques to find the closest match; and e) a display device for displaying the results of said comparison to permit identification of said sample tissue.
Claim 14
Independent Claim
108 words
An apparatus for identifying tissue comprising: a) a first memory for storing the infrared spectra of a plurality of known tissue types in at least one frequency band; b) an infrared spectrometer for determining the infrared spectrum of a tissue sample over a range of frequencies in at least one frequency band; c) a second memory for storing said infrared spectrum of said tissue sample; d) a processor for comparing the infrared spectra stored in said first and second memories using pattern recognition techniques to find the closest match; and e) a display device for displaying the results of said comparison to permit identification of said sample tissue.
Claim 15
Dependent Claim
15 words
An apparatus as claimed in claim 11, wherein said infrared spectrometer is an FT-IR spectrometer.
Claim 16
Dependent Claim
35 words
An apparatus as claimed in claim 11, wherein said infrared spectrometer is a pressure spectrometer, and the pressure dependence of said infrared spectra of said known tissue types are also stored in said first memory.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-23 | 2000-01-22 | 2000-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-23 | 2004-01-22 | 2004-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-23 | 2008-01-22 | 2008-07-23 | $7700.00 | Window Closed / Lapsed |