US5530780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber optic laser conducting and diffusion device
Assignee: Hamamatsu Photonics KK
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Filing: 1995-06-07
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Granted: 1996-06-25
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Expires: 2015-06-07
Abstract
Abstract A polyolefin resin light diffusion tip is attached to an optical fiber end for conducting a pulse laser beam.
Inventors
- 👤 Masami Ohsawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61N; A61N5/00; A61N5/06; A61N5/0601; G; G02; G02B; G02B6/00; G02B6/24; G02B6/241; G02B6/36; G02B6/3616; G02B6/3624; A61B2018/2255; A61B2018/2261; Y; Y10; Y10S; Y10S385/00; Y10S385/901
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
61 words
A fiber optic laser conducting and diffusion device for a photodynamic therapy characterized in that a polyolefin resin light diffusion tip is attached to an optical fiber end to irradiate a pulse laser beam conducted in the optical fiber against an object, and wherein a light reflecting mirror is provided in a hollow portion of the polyolefin resin light diffusion tip.
Claim 2
Dependent Claim
61 words
A fiber optic laser conducting and diffusion device for a photodynamic therapy characterized in that a polyolefin resin light diffusion tip is attached to an optical fiber end to irradiate a pulse laser beam conducted in the optical fiber against an object, and wherein a light reflecting mirror is provided in a hollow portion of the polyolefin resin light diffusion tip.
Claim 3
Dependent Claim
30 words
A fiber optic laser conducting and diffusion device for a photodynamic therapy according to claim 1, wherein the polyolefin resin light diffusion tip is a polyethylene resin light diffusion tip.
Claim 4
Dependent Claim
61 words
A fiber optic laser conducting and diffusion device for a photodynamic therapy characterized in that a polyolefin resin light diffusion tip is attached to an optical fiber end to irradiate a pulse laser beam conducted in the optical fiber against an object, and wherein a light reflecting mirror is provided in a hollow portion of the polyolefin resin light diffusion tip.
Claim 5
Dependent Claim
61 words
A fiber optic laser conducting and diffusion device for a photodynamic therapy characterized in that a polyolefin resin light diffusion tip is attached to an optical fiber end to irradiate a pulse laser beam conducted in the optical fiber against an object, and wherein a light reflecting mirror is provided in a hollow portion of the polyolefin resin light diffusion tip.
Claim 6
Dependent Claim
30 words
A fiber optic laser conducting and diffusion device for a photodynamic therapy according to claim 3, wherein the polyolefin resin light diffusion tip is a polyethylene resin light diffusion tip.
Claim 7
Dependent Claim
61 words
A fiber optic laser conducting and diffusion device for use attached to an end of an optical fiber for performing photodynamic therapy, said fiber optic laser conducting and diffusion device comprising: a light diffusion tip for diffusing light from the optical fiber irradiated toward an object; and wherein said light diffusion tip is formed of polyolefin resin having generated molecular spherulites.
Claim 8
Dependent Claim
61 words
A fiber optic laser conducting and diffusion device for use attached to an end of an optical fiber for performing photodynamic therapy, said fiber optic laser conducting and diffusion device comprising: a light diffusion tip for diffusing light from the optical fiber irradiated toward an object; and wherein said light diffusion tip is formed of polyolefin resin having generated molecular spherulites.
Claim 9
Dependent Claim
39 words
A fiber optic laser conducting and diffusion device according to claim 5, wherein said light diffusion tip has a hollow portion formed therein; and a light reflecting mirror is provided in said hollow portion of said light diffusion tip.
Claim 10
Dependent Claim
38 words
A fiber optic laser conducting and diffusion device according to claim 5, wherein said light diffusion tip has an inner surface; and light reflecting and diffusion incisions are formed in said inner surface of said light diffusion tip.
Claim 11
Dependent Claim
65 words
A fiber optic laser conducting and diffusion device according to claim 5, wherein said light diffusion tip has a hollow portion formed therein; a core portion of the end of the optical fiber projects into said hollow portion and is exposed to an inner surface of said light diffusion tip; and an outer surface of said core portion projecting into said hollow portion is roughened.
Claim 12
Dependent Claim
27 words
A fiber optic laser conducting and diffusion device according to claim 8, wherein said polyolefin resin of which said light diffusion tip is formed comprises polyethylene resin.
Claim 13
Dependent Claim
27 words
A fiber optic laser conducting and diffusion device according to claim 5, wherein said polyolefin resin of which said light diffusion tip is formed comprises polyethylene resin.
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) | 1999-06-25 | 1999-12-25 | 2000-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-25 | 2003-12-25 | 2004-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-25 | 2007-12-25 | 2008-06-25 | $7700.00 | Window Closed / Lapsed |