Patent US2925719A successfully refreshed from Google Patents.
US4842390A
Expired / Lapsed
US
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Fiber optic device for angioplasty
Assignee: Consiglio Nazionale delle Richerche
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Filing: 1988-07-15
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Granted: 1989-06-27
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Expires: 2008-07-15
Abstract
Abstract A fiber optic device for the transmission and lateral irradiation of laser energy, particularly for angioplasty, comprising at least one optical fiber (1), to the inlet end of which there is coupled a laser source (4) and to the outlet end of which, after removing its coating (3), there is applied a microcapsule (5) which is transparent to laser radiation and has a substantially toroidal thickened portion (6) surrounding said end and arranged to give rise to a "corolla-shaped" output laser beam.
Inventors
- 👤 Stefano Sottini
- 👤 Vera Russo
- 👤 Filippo Crea
- 👤 Giancarlo Margheri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:36
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/3616; G02B6/3624; A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; H; H01; H01S; H01S3/00; H01S3/005; A61B2018/2255; A61B2018/2266; A61B2018/2272; G02B6/241
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
108 words
A fiber optic device for the transmission and lateral irradiation of laser energy, particularly for angioplasty, characterized by comprising at least one optical fiber (1), to the inlet end of which there is coupled a laser source (4) and to the outlet end of which, after removing its coating (3), there is applied a microcapsule (5) which is transparent to laser radiation and has a substantially toroidal thickened portion (6) surrounding said end and arranged to give rise to a "corolla-shaped" output laser beam further comprising sealing means interposed between the outer lateral surface of the optical fiber (1) and the inner lateral surface of the microcapsule (5).
Claim 2
Dependent Claim
108 words
A fiber optic device for the transmission and lateral irradiation of laser energy, particularly for angioplasty, characterized by comprising at least one optical fiber (1), to the inlet end of which there is coupled a laser source (4) and to the outlet end of which, after removing its coating (3), there is applied a microcapsule (5) which is transparent to laser radiation and has a substantially toroidal thickened portion (6) surrounding said end and arranged to give rise to a "corolla-shaped" output laser beam further comprising sealing means interposed between the outer lateral surface of the optical fiber (1) and the inner lateral surface of the microcapsule (5).
Claim 3
Dependent Claim
18 words
A device as claimed in claim 1, characterized in that the optical fiber (1) is of single type.
Claim 4
Dependent Claim
18 words
A device as claimed in claim 1, characterized in that the optical fiber (1) is of multiple type.
Claim 5
Dependent Claim
25 words
A device as claimed in claim 1, characterized in that the outlet end of the optical fiber (1), is cut orthogonal to the fiber axis.
Claim 6
Dependent Claim
22 words
A device as claimed in claim 1, characterized in that the outlet end of the optical fiber (1) is of conical shape.
Claim 7
Dependent Claim
31 words
A device as claimed in claim 3, characterized in that the efficiency of the coupling between the laser source (4) and each element of the multiple optical fiber (1) is adjustable.
Claim 8
Dependent Claim
23 words
A device as claimed in claim 1, characterized in that the microcapsule (5) consists of a portion of capillary sealed at one end.
Claim 9
Dependent Claim
17 words
A device as claimed in claim 1, wherein the sealing means is a collar of sealing material.
Claim 10
Dependent Claim
19 words
A device as claimed in claim 1, characterized in that the interior of the microcapsule (5) is under vacuum.
Claim 11
Dependent Claim
25 words
A device as claimed in claim 1, characterized by comprising an aperture for communication between the interior cavity of the microcapsule (5) and the outside.
Claim 12
Dependent Claim
25 words
A device as claimed in claim 10, characterized by comprising a capillary (8) which connects the interior cavity of the microcapsule (5) to the outside.
Claim 13
Dependent Claim
25 words
A device as claimed in claim 11, characterized in that the optical fiber (1) and the capillary (8) are contained in a single sheath (9).
Claim 14
Dependent Claim
23 words
A device as claimed in claim 11, characterized in that the end of the fiber (1) within the microcapsule (5) is adjustable axially.
Claim 15
Dependent Claim
23 words
A device as claimed in claim 11, characterized in that the end of the fiber (1) within the microcapsule (5) is adjustable transversely.
References Cited (Backward Citations)
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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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |