US4676231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser probe
Assignee: Olympus Corp
•
Filing: 1985-09-09
•
Granted: 1987-06-30
•
Expires: 2005-09-09
Abstract
Abstract This invention is a laser probe made to cure and extinguish within a short time surface-existing tumors generated in a wide range within a body cavity and having a substantially spherical hollow light diffusing part enclosing a light dispersing medium at the tip, light leading fibers inserted in this light diffusing part and a laser light emitting end arranged substantially in the center of the light diffusing part. This laser probe diffuses a laser light emitted from the emitting end of the light leading fibers over a wide range from the light diffusing part to illuminate the objects with a uniform intensity.
Inventors
- 👤 Haruo Hisazumi
- 👤 Norio Miyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:43
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4296; A; A61; A61N; A61N5/00; A61N5/06; A61N5/0601; A61N5/0613; A61N5/062; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B2018/2255; A61B2018/2261; A61N5/0603
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
A laser probe endoscope comprising: a handle; a hollow shaft body affixed to said handle; a cylindrical neck part extending from said hollow shaft body; at least one light-leading fiber passing through said handle, said shaft body and said neck part and terminating beyond said neck part; a light diffusing tip disposed around the distal end of said light-leading fiber, said tip being hollow, rigid, transparent, and substantially spherical; a light-dispersing medium within said hollow sphere, said medium comprising a transparent liquid in which is suspended a fine particulate material; and a laser light source disposed at the end of said light-leading fiber proximal to said handle, wherein laser light is transmitted through said light-leading fiber to said light diffusing tip and wherein said light-dispersing medium diffuses said laser light in a wide range with a uniform intensity.
Claim 2
Dependent Claim
138 words
A laser probe endoscope comprising: a handle; a hollow shaft body affixed to said handle; a cylindrical neck part extending from said hollow shaft body; at least one light-leading fiber passing through said handle, said shaft body and said neck part and terminating beyond said neck part; a light diffusing tip disposed around the distal end of said light-leading fiber, said tip being hollow, rigid, transparent, and substantially spherical; a light-dispersing medium within said hollow sphere, said medium comprising a transparent liquid in which is suspended a fine particulate material; and a laser light source disposed at the end of said light-leading fiber proximal to said handle, wherein laser light is transmitted through said light-leading fiber to said light diffusing tip and wherein said light-dispersing medium diffuses said laser light in a wide range with a uniform intensity.
Claim 3
Dependent Claim
30 words
A laser probe according to claim 1 wherein a planar portion regulating the laser light emitting direction is formed in a part of said substantially spherical hollow light diffusing part.
Claim 4
Dependent Claim
30 words
A laser probe according to claim 2 wherein said planar portion formed in a part of said substantially spherical hollow light diffusing part is reflection-coated to reflect the laser light.
Claim 5
Dependent Claim
19 words
A laser probe endoscope according to claim 1, further comprising an illuminating system and an optical fiber viewing system.
References Cited (Backward Citations)
US3799150A
Cited
US3724383A
Cited
US3809072A
Cited
US4233493A
Cited
US4327963A
Cited
US4170035A
Cited
US4201199A
Cited
US4257672A
Cited
SU810205A1
Cited
DE3119322A1
Cited
US4470407A
Cited
DE3323365A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |