Patent US6551255B2 successfully refreshed from Google Patents.
US4852579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocharacterization and treatment of normal abnormal and ectopic endometrium
Assignee: STORZ ENDOSCOPY AND Co GmbH
•
Filing: 1987-04-20
•
Granted: 1989-08-01
•
Expires: 2007-04-20
Abstract
Abstract A method and apparatus for optical diagnosis and treatment of abnormal cells through the use of hormone-specific chemical markers which are preferential to genital tissues. Abnormal cells can be differentiated from normal cells by the amount of fluorescent or thermal radiation produced by the chemical marker retained in the respective cells when irradiated with electromagnetic radiation at a predetermined wavelength. Once the abnormal cells have been detected, they can be treated through the use of an optical technique based on photochemical or thermal reactions which can be controlled to destroy the abnormal cells, while leaving normal cells unharmed.
Inventors
- 👤 Dennis W. Gilstad
- 👤 Ronald L. Branstetter
- 👤 Ralph H. Hill, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:07
CPC Classifications
A; A61; A61B; A61B10/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
69 words
A method of photocharacterization of tissue, comprising the steps of: injecting said patient with a hormone-specific chemical marker, said chemical marker being preferential to genital tissue; illuminating a portion of said tissue with an optical excitation means producing light having a predetermined wavelength; and detecting fluorescent radiation produced by said portion of tissue; and correlating said fluorescent radiation with the existence of abnormal cells in said portion of tissue.
Claim 2
Independent Claim
69 words
A method of photocharacterization of tissue, comprising the steps of: injecting said patient with a hormone-specific chemical marker, said chemical marker being preferential to genital tissue; illuminating a portion of said tissue with an optical excitation means producing light having a predetermined wavelength; and detecting fluorescent radiation produced by said portion of tissue; and correlating said fluorescent radiation with the existence of abnormal cells in said portion of tissue.
Claim 3
Dependent Claim
42 words
The method according to claim 1, wherein said optical excitation means further comprises an optical delivery guide means for selectively radiating said portion of tissue with said light and an optical return guide means for collecting fluorescent radiation produced by said tissue.
Claim 4
Dependent Claim
19 words
The method according to claim 2, said optical delivery means and said optical return guide means comprising an endoscope.
Claim 5
Dependent Claim
13 words
The method according to claim 3, said optical excitation means comprising a laser.
Claim 6
Dependent Claim
15 words
The method according to claim 4, said chemical marker being preferential to the genital tissues.
Claim 7
Dependent Claim
21 words
The method according to claim 5, said chemical marker being chosen from the group consisting of tamoxifen citrate, clomiphene, and danazol.
Claim 8
Independent Claim
146 words
A method for photocharacterization of tissue wherein said tissue has absorbed a hormone-specific chemical marker, comprising the steps of: irradiating a portion of said tissue with a source of laser light having a predetermined wavelength; irradiating said portion of said tissue with conventional light; detecting fluorescent radiation produced by said tissue in response to said laser light; processing said fluorescent radiation to obtain a first image at a first intensity; detecting light reflected by said portion of tissue in response to said conventional light; processing said reflected light to obtain a second image at a second intensity; amplifying said first image at said first intensity to obtain a first image having approximately the same intensity as said second image; combining said first and second images to obtain a composite image; and correlating said composite image with the existence of abnormal cells in said portion of tissue.
Claim 9
Independent Claim
146 words
A method for photocharacterization of tissue wherein said tissue has absorbed a hormone-specific chemical marker, comprising the steps of: irradiating a portion of said tissue with a source of laser light having a predetermined wavelength; irradiating said portion of said tissue with conventional light; detecting fluorescent radiation produced by said tissue in response to said laser light; processing said fluorescent radiation to obtain a first image at a first intensity; detecting light reflected by said portion of tissue in response to said conventional light; processing said reflected light to obtain a second image at a second intensity; amplifying said first image at said first intensity to obtain a first image having approximately the same intensity as said second image; combining said first and second images to obtain a composite image; and correlating said composite image with the existence of abnormal cells in said portion of tissue.
Claim 10
Dependent Claim
28 words
The method according to claim 7, said step of correlating said composite image further comprising the step of projecting said first and second images on a video screen.
Claim 11
Dependent Claim
15 words
The apparatus according to claim 8, said chemical marker being preferential to the genital tissues.
Claim 12
Dependent Claim
21 words
The method according to claim 9, said chemical marker being chosen from the group consisting of tamoxifen citrate, clomiphene, and danazol.
References Cited (Backward Citations)
GB2126717A
Cited
US4675529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |