US5608520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasma emission spectroscopy method of tumor therapy
Assignee: United States Department of Energy
•
Filing: 1995-05-31
•
Granted: 1997-03-04
•
Expires: 2015-05-31
Abstract
Abstract Disclosed are a method and apparatus for performing photon diagnostics using a portable and durable apparatus which incorporates the use of a remote sensing probe in fiberoptic communication with an interferometer or spectrometer. Also disclosed are applications for the apparatus including optically measuring high velocities and analyzing plasma/emission spectral characteristics.
Inventors
- 👤 Kevin J. Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/26; G01N; G01N21/00; G01N21/62; G01N21/71; G01N21/718; G01P3/00; G01P3/36; G01P3/366; A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B17/00; A61B2017/00017; A61B2017/00022; A61B2017/00057; A61B2017/00061
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
152 words
A method of tumor therapy comprising the steps of: providing a fiberoptic photon analysis sensor in operative association with a spectral analysis means, said remote fiberoptic photon analysis sensor comprising a lens having a focal length, placing said fiberoptic photon analysis sensor in proximity to tissue in a patient so that said tissue in said patient is within said focal length of said lens, injecting said patient with a substance that is selectively absorbed by cancerous tissue, which substance exhibits a unique spectral emission upon ionization, and which unique spectral emission is different from that of healthy tissue when ionized, using a laser to cause ionization of said tissue in said patient, and distinguishing cancerous from noncancerous tissue in said patient by analyzing, using said spectral analysis means, plasma generated as a result of said ionization for presence of said spectral emission which is different from that of healthy tissue when ionized.
Claim 2
Independent Claim
152 words
A method of tumor therapy comprising the steps of: providing a fiberoptic photon analysis sensor in operative association with a spectral analysis means, said remote fiberoptic photon analysis sensor comprising a lens having a focal length, placing said fiberoptic photon analysis sensor in proximity to tissue in a patient so that said tissue in said patient is within said focal length of said lens, injecting said patient with a substance that is selectively absorbed by cancerous tissue, which substance exhibits a unique spectral emission upon ionization, and which unique spectral emission is different from that of healthy tissue when ionized, using a laser to cause ionization of said tissue in said patient, and distinguishing cancerous from noncancerous tissue in said patient by analyzing, using said spectral analysis means, plasma generated as a result of said ionization for presence of said spectral emission which is different from that of healthy tissue when ionized.
Claim 3
Dependent Claim
60 words
The method of claim 1 further comprising the steps of: performing a succession of ionizations of tissue, comprising a first ionization and at least one ionization subsequent to said first ionization, and selecting locations for ionizations subsequent to said first ionization, based on results of plasma analysis obtained following previous successive ionizations to identify extent and location of cancerous tissue.
Claim 4
Dependent Claim
17 words
The method of claim 2 further comprising the step of destroying said cancerous tissue using said laser.
References Cited (Backward Citations)
US4076421A
Cited
US4756619A
Cited
US5042494A
Cited
US4768513A
Cited
US4932412A
Cited
US4919535A
Cited
US4781676A
Cited
US4781676B1
Cited
US4981138A
Cited
US4995723A
Cited
US4957476A
Cited
US4973848A
Cited
US5305759A
Cited
US5301681A
Cited
US5470568A
Cited
US5365267A
Cited
US5408996A
Cited
US5421339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-03 | 2000-09-02 | 2001-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-03 | 2004-09-02 | 2005-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-03 | 2008-09-02 | 2009-03-04 | $7700.00 | Window Closed / Lapsed |