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US5411502A
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System for causing ablation of irradiated material of living tissue while not causing damage below a predetermined depth
Assignee: Lumenis BE Ltd
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Filing: 1993-12-30
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Granted: 1995-05-02
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Expires: 2013-12-30
Abstract
Abstract A system for causing uniform ablation of irradiated material of living tissue while not causing damage below a predetermined depth where laser radiation is provided sequentially and continuously in a predetermined pattern is disclosed.
Inventors
- 👤 Eliezer Zair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:01
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/201; B; B23; B23K; B23K26/00; B23K26/08; B23K26/0869; B23K26/0876; B23K26/0884; A61B17/00; A61B2017/00743; A61B2017/00747; A61B2017/00761; A61B2018/00636; A61B2018/2035; A61B2018/20351; A61B2018/20359; A61B34/00; A61B34/70; A61B34/74; A61B2034/742; A61B90/00; A61B90/03
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A system for causing ablation of an irradiated material of living tissue while not causing necrosis below a predetermined depth, said irradiated material consisting of a plurality of elements; said system including: means for generating a beam of laser radiation to be uniformly absorbed by said irradiated material; a scanner means for moving said beam of laser radiation in a predetermined pattern on said irradiated material so that said elements of said irradiated material are sequentially and continuously irradiated; and means for controlling the scanner means to move said beam of laser radiation in said predetermined pattern so that ablation of said irradiated material of living tissue is caused uniformly but only to a predetermined depth.
Claim 2
Independent Claim
116 words
A system for causing ablation of an irradiated material of living tissue while not causing necrosis below a predetermined depth, said irradiated material consisting of a plurality of elements; said system including: means for generating a beam of laser radiation to be uniformly absorbed by said irradiated material; a scanner means for moving said beam of laser radiation in a predetermined pattern on said irradiated material so that said elements of said irradiated material are sequentially and continuously irradiated; and means for controlling the scanner means to move said beam of laser radiation in said predetermined pattern so that ablation of said irradiated material of living tissue is caused uniformly but only to a predetermined depth.
Claim 3
Dependent Claim
26 words
The system according to claim 1, wherein each of said elements of said irradiated material experiences a predetermined minimum time interval between applications of radiation thereto.
Claim 4
Dependent Claim
19 words
The system as defined in claim 2 in which said predetermined minimum time interval is 0.1 of a second.
Claim 5
Dependent Claim
23 words
The system as defined in claim 3 wherein the laser beam has an average power density of at least 40 watts/mm 2 .
Claim 6
Independent Claim
26 words
The system according to any one of claims 1-4, wherein the scanner causes the beam of laser radiation to trace Lissajous figures over said irradiated material.
Claim 7
Independent Claim
25 words
The system according to any one of claims 1-4 in which said means for generating a beam of laser radiation is a carbon dioxide laser.
Claim 8
Dependent Claim
23 words
The system as defined in claim 5 in which said means for generating a beam of laser radiation is a carbon dioxide laser.
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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) | 1998-05-01 | 1998-10-31 | 1999-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-01 | 2002-10-31 | 2003-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-01 | 2006-10-31 | 2007-05-02 | $7700.00 | Window Closed / Lapsed |