Patent US4841951A successfully refreshed from Google Patents.
US4841951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angle portion of encoscope
Assignee: Machida Endoscope Co Ltd
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Filing: 1988-08-26
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Granted: 1989-06-27
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Expires: 2008-08-26
Abstract
Abstract An angle portion of an endoscope comprising a flexible tube having a polydirectional distal tip. A series of four-directional rings are arranged to form the rear part of the angle portion, a series of two-directional rings are subsequently arranged to form the front part of the angle portion, and the distal tip is connected to the top end of the front part of the angle portion.
Inventors
- 👤 Hiroyuki Umeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:44
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/005; A61B1/0051; A61B1/0055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
In an endoscope comprising a flexible tube having a distal tip and an angle portion, a handle having a knob for operating an angle-operating wire and a conduit for guiding an article to be introduced, in which an angle portion is bendable in up-and-down and left-and-right four directions, the angle portion characterized in that a series of four-directional rings are arranged to form the rear part of the angle portion, a series of two-directional rings are subsequently arranged to from the front part of the angle portion, and the distal tip is connected to the top end of the front part of the angle portion.
Claim 2
Dependent Claim
105 words
In an endoscope comprising a flexible tube having a distal tip and an angle portion, a handle having a knob for operating an angle-operating wire and a conduit for guiding an article to be introduced, in which an angle portion is bendable in up-and-down and left-and-right four directions, the angle portion characterized in that a series of four-directional rings are arranged to form the rear part of the angle portion, a series of two-directional rings are subsequently arranged to from the front part of the angle portion, and the distal tip is connected to the top end of the front part of the angle portion.
References Cited (Backward Citations)
US3799151A
Cited
US4773395A
Cited
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 |