Patent US2495416A successfully refreshed from Google Patents.
Patent US4972828A successfully refreshed from Google Patents.
US4972828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscope having adjustable forceps insertion inlet portion
Assignee: Pentax Corp
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Filing: 1989-04-03
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Granted: 1990-11-27
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Expires: 2009-04-03
Abstract
Abstract An endoscope which is convenient to use to both right- and left-handed individuals. The endoscope has a connection portion extending between an operating portion and an insertion portion which is sheathed with a cylindrical sheath casing having a forceps insertion inlet projecting therefrom. The sheath casing is capable of being axially rotated so as to change the direction thereof and being held in a fixed position after being rotated to the desired position.
Inventors
- 👤 Keiji Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:33
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00131; A61B1/00137; A61B1/005; A61B1/0051; A61B1/012; A61B1/018; A61B1/04; A61B1/05; A61B1/051
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
In an endoscope having an operating portion, an insertion portion, a sheath casing sheathing a portion between said operating portion and said insertion portion, and a forceps insertion inlet projecting from said sheath casing, the improvement comprising means for rotatably mounting said sheath a casing with respect to said operating portion and fixing said sheath casing so that said forceps insertion inlet is oriented at a desired angle, said mounting and fixing means comprising interfitting end portions of said sheath casing and operating portion.
Claim 2
Dependent Claim
84 words
In an endoscope having an operating portion, an insertion portion, a sheath casing sheathing a portion between said operating portion and said insertion portion, and a forceps insertion inlet projecting from said sheath casing, the improvement comprising means for rotatably mounting said sheath a casing with respect to said operating portion and fixing said sheath casing so that said forceps insertion inlet is oriented at a desired angle, said mounting and fixing means comprising interfitting end portions of said sheath casing and operating portion.
Claim 3
Dependent Claim
16 words
The endoscope of claim 1, wherein said end portions have the shape of a regular polygon.
Claim 4
Dependent Claim
13 words
The endoscope of claim 2, wherein said regular polygon is a regular octagon.
Claim 5
Dependent Claim
13 words
The endoscope of claim 3, wherein said regular polygon is a regular dodecagon.
Claim 6
Dependent Claim
12 words
The endoscope of claim 1, wherein said interfitting end portions are splined.
Claim 7
Dependent Claim
25 words
The endoscope of claim 1, wherein said mounting and fixing means further comprises a nut for fixing said sheath casing and operating portion in position.
Claim 8
Dependent Claim
72 words
In an endoscope having an operating portion, an insertion portion, a sheath casing sheathing a portion between said operating portion and said insertion portion, and a forceps insertion inlet projecting from said sheath casing, the improvement comprising means for rotatably mounting said sheath casing with respect to said operating portion and securely fixing said sheath casing to aid operating portion so that said forceps insertion inlet is oriented at a desired angle.
Claim 9
Dependent Claim
72 words
In an endoscope having an operating portion, an insertion portion, a sheath casing sheathing a portion between said operating portion and said insertion portion, and a forceps insertion inlet projecting from said sheath casing, the improvement comprising means for rotatably mounting said sheath casing with respect to said operating portion and securely fixing said sheath casing to aid operating portion so that said forceps insertion inlet is oriented at a desired angle.
Claim 10
Dependent Claim
81 words
In an endoscope having an operating portion, an insertion portion, a sheath casing sheathing a portion between said operating portion and said insertion portion, and a forceps insertion inlet projecting from said sheath casing, the improvement comprising means for disengaging said sheath casing from said operating portion so as to rotate said sheath casing with respect to said operating portion and engaging said sheath casing to said operating portion so that said forceps inserting inlet is oriented at a desired angle.
Claim 11
Dependent Claim
81 words
In an endoscope having an operating portion, an insertion portion, a sheath casing sheathing a portion between said operating portion and said insertion portion, and a forceps insertion inlet projecting from said sheath casing, the improvement comprising means for disengaging said sheath casing from said operating portion so as to rotate said sheath casing with respect to said operating portion and engaging said sheath casing to said operating portion so that said forceps inserting inlet is oriented at a desired angle.
References Cited (Backward Citations)
JPS5169392A
Cited
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Cited
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Cited
JPS61265125A
Cited
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US4750477A
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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) | 1993-11-26 | 1994-05-28 | 1994-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-26 | 1998-05-28 | 1998-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-26 | 2002-05-28 | 2002-11-27 | $7700.00 | Window Closed / Lapsed |