US4740047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber for lateral beaming of laser beam
Assignee: Fujinon Corp
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Filing: 1986-03-19
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Granted: 1988-04-26
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Expires: 2006-03-19
Abstract
Abstract A fiber for lateral beaming of a laser beam, wherein an affected portion in a cavity of an internal organ in a living body is irradiated by the laser beam in a through-endoscopic manner. The fiber for lateral beaming of the laser beam is constructed such that a transparent tubular member is coupled to the forward end portion of a fiber through two coating layers, and an anti-reflection coating layer is formed on a laser beam exiting surface of the transparent tubular member. Owing to the anti-reflection coating layer, this fiber for lateral beaming is free from the harmful leaking beam. Since the transparent tubular member is connected to the fiber through the two coating layes, the fiber can avoid being broken.
Inventors
- 👤 Koichi Abe
- 👤 Toshio Suzuki
- 👤 Hideyuki Takashima
- 👤 Daijyo Hashimoto
- 👤 Masane Suzuki
- 👤 Motonori Kanaya
- 👤 Hiroshi Sibamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:28
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/3616; G02B6/3624; A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/06; A61B1/0623; A61B1/07; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61N; A61N5/00; A61N5/06; A61N5/0601; A61N5/067; G02B6/26; G02B6/262; A61B2018/2255; A61B2018/2272; G02B6/02; G02B6/02395; G02B6/241
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
116 words
A fiber for lateral beaming of a laser beam, comprising: a highly reflective surface, inclined at 35° to 40° to the center line of the fiber, formed at a distal end of the fiber; and a transparent first tubular member, one end of which is closed and the other end of which is coupled by means of a second tubular member to one end of the fiber having said inclined surface to form an air layer adjacent to said inclined surface; wherein an anti-reflection coating layer is deposited on a laser beam exiting surface of said transparent first tubular member, and further wherein two coating layers exist between said fiber and said transparent first tubular member.
Claim 2
Dependent Claim
116 words
A fiber for lateral beaming of a laser beam, comprising: a highly reflective surface, inclined at 35° to 40° to the center line of the fiber, formed at a distal end of the fiber; and a transparent first tubular member, one end of which is closed and the other end of which is coupled by means of a second tubular member to one end of the fiber having said inclined surface to form an air layer adjacent to said inclined surface; wherein an anti-reflection coating layer is deposited on a laser beam exiting surface of said transparent first tubular member, and further wherein two coating layers exist between said fiber and said transparent first tubular member.
Claim 3
Dependent Claim
34 words
A fiber for lateral beaming of a laser beam as set forth in claim 1, wherein said anti-reflection coating layer is deposited on a flat surface portion formed on said transparent first tubular member.
Claim 4
Dependent Claim
37 words
A fiber for lateral beaming of a laser beam as set forth in claim 1, wherein said second tubular member includes an opening for exiting the laser beam and incorporates substantially the entire transparent first tubular member.
Claim 5
Dependent Claim
47 words
A fiber for lateral beaming of a laser beam as set forth in claim 2, wherein, on said transparent first tubular member, a surface substantially symmetrical about the center line with the surface formed thereon with the anti-reflection coating layer has a highly reflective layer deposited thereon.
Claim 6
Dependent Claim
50 words
A fiber for lateral beaming of a laser beam as set forth in claim 2, wherein said fiber is provided with a third coating layer which abuts against an opening portion of said transparent first tubular member and is substantially equal in outer diameter to said transparent first tubular member.
Claim 7
Dependent Claim
24 words
A fiber for lateral beaming of a laser beam as set forth in claim 5, wherein said second tubular member is a heat-shrinkable tube.
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) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |