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US5618285A
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System for causing ablation of irradiated material of living tissue while not causing damage below a predetermined depth
Assignee: Laser Industries Ltd
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Filing: 1995-02-02
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Granted: 1997-04-08
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Expires: 2015-02-02
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 14:37
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: 9
Claim 1
Independent Claim
102 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: a laser which generates a beam of light; a mirror system to move said beam of light in a predetermined pattern on said irradiated material so that said elements of said irradiated material are sequentially and continuously irradiated; and a motor to move said beam of light 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
102 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: a laser which generates a beam of light; a mirror system to move said beam of light in a predetermined pattern on said irradiated material so that said elements of said irradiated material are sequentially and continuously irradiated; and a motor to move said beam of light 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
32 words
The system for causing ablation according to claim 1, wherein each of said elements of said irradiated material experiences a predetermined minimum time interval between applications of said beam of light thereto.
Claim 4
Dependent Claim
22 words
The system for causing ablation as defined in claim 2 in which said predetermined minimum time interval is 0.1 of a second.
Claim 5
Dependent Claim
27 words
The system for causing ablation as defined in claim 3 wherein said beam of light has an average power density of at least 40 watts/mm 2 .
Claim 6
Independent Claim
31 words
The system for causing ablation according to any one of claims 1 or 2-4, wherein said mirror system causes said beam of light to trace Lissajous figures over said irradiated material.
Claim 7
Dependent Claim
19 words
The system for causing ablation as defined in claim 5 in which said laser is a carbon dioxide laser.
Claim 8
Dependent Claim
23 words
The system for causing ablation according to any one of claim 1 or 2-4 in which said laser is a carbon dioxide laser.
Claim 9
Independent Claim
21 words
The system for causing ablation according to any one of claims 1 or 2-4, wherein said mirror system comprises two mirrors.
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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) | 2000-04-07 | 2000-10-07 | 2001-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-07 | 2004-10-07 | 2005-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-07 | 2008-10-07 | 2009-04-08 | $7700.00 | Window Closed / Lapsed |