Patent NL61649C successfully refreshed from Google Patents.
Patent US4657014A successfully refreshed from Google Patents.
US4657014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid interface fiberoptic coupler
Assignee: SHILE Inc
•
Filing: 1985-03-11
•
Granted: 1987-04-14
•
Expires: 2005-03-11
Abstract
Abstract A device for conveying high energy electromagnetic radiation from a laser source to an optical fiber which comprises a sleeve having a proximal end and a distal end and being adapted to enclose a liquid which is transparent to said radiation, the distal end of said sleeve being adapted to be attached to the input end of the optical fiber; and a focussing lens attached to the proximal end of said sleeve said liquid having a refractive index which substantially matches the refractive index of the lens and of the optical fiber. A process for removing an obstruction by laser surgery using said device is also disclosed.
Inventors
- 👤 William Edelman
- 👤 Hamid R. Naghieh
- 👤 Dennis Constantinou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:23
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4296; A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; G02B6/26; G02B6/262; G02B6/32; G02B6/4201; G02B6/4204; G02B6/4219; G02B6/4236; G02B6/424
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
A coupling device for conveying high energy electromagnetic radiation from an excimer laser source to an optical fiber to reduce degradation of the fiber, which comprises a sleeve means having a proximal end and a distal end for enclosing a liquid which is transparent to said radiation, the distal end of said sleeve means having attachment means for attaching said distal end to the input end of the optical fiber; and a focussing lens attached to the proximal end of said sleeve means, said liquid having a refractive index which substantially matches the refractive index of the lens and of the optical fiber to enhance the energy transfer from the laser to the optical fiber and thereby reduce degradation of the fiber.
Claim 2
Dependent Claim
122 words
A coupling device for conveying high energy electromagnetic radiation from an excimer laser source to an optical fiber to reduce degradation of the fiber, which comprises a sleeve means having a proximal end and a distal end for enclosing a liquid which is transparent to said radiation, the distal end of said sleeve means having attachment means for attaching said distal end to the input end of the optical fiber; and a focussing lens attached to the proximal end of said sleeve means, said liquid having a refractive index which substantially matches the refractive index of the lens and of the optical fiber to enhance the energy transfer from the laser to the optical fiber and thereby reduce degradation of the fiber.
Claim 3
Dependent Claim
38 words
A device according to claim 1, in which the liquid is distilled water having a refractive index of 1.33 at said wavelength and the optical fiber is fused silica having a refractive index of 1.43 at said wavelength.
Claim 4
Dependent Claim
22 words
A device according to claim 1, in which the sleeve is cylindrical and is made from a metal or a plastics material.
Claim 5
Dependent Claim
24 words
A device according to claim 1, in which the lens is a single element lens made from the same material as the optical fiber.
Claim 6
Dependent Claim
26 words
A device according to claim 1, which the liquid is an aqueous solution of 3.74M potassium chloride havinga refractive index of 1.37 at the said wavelength.
Claim 7
Dependent Claim
26 words
A device according to claim 1, in which the liquid is a 3% hydrogen peroxide solution having a refractive index of 1.33 at the said wavelength.
References Cited (Backward Citations)
US3471215A
Cited
US3467098A
Cited
US4207874A
Cited
US4341205A
Cited
US4421382A
Cited
US4350163A
Cited
US4408602A
Cited
US4449535A
Cited
US4418688A
Cited
US4473074A
Cited
US4423736A
Cited
US4448188A
Cited
US4470407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |