US5287845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscope for transurethral surgery
Assignee: Olympus Winter and Ibe GmbH
•
Filing: 1992-01-15
•
Granted: 1994-02-22
•
Expires: 2012-01-15
Abstract
Abstract An endoscope for transurethral surgery and has a main body irrotationally supporting an optics and a surgical instrument, further an outer tube affixed to the main body and tubularly enclosing the optics and the surgical instrument, which is characterized in that the outer tube is rotational relative to the remaining endoscope parts.
Inventors
- 👤 Peter Faul
- 👤 Heinz Hluchy
- 👤 Armin Schluter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:41
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00131; A61B1/00135; A61B1/12; A61B1/307; A61B17/00; A61B17/32; A61B17/320016; A61B2217/00; A61B2217/002; A61B2217/005; A61B2217/007
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
An endoscope for transurethral surgery comprising a main body nonrotatably attached to and supporting an optical system and a surgical instrument; an outer tube coupled to said main body and tubularly enclosing said optical system and said surgical instrument, an inner tube inside of said outer tube and enclosing said optics and said surgical instrument, said inner tube being nonrotatably mounted relative to said main body, said optical system and said surgical instrument said outer tube being rotatably mounted relative to said main body, said optical system and said surgical instrument, said outer tube having an inside diameter sufficiently larger than the outside diameter of said inner tube to leave a fluid passage therebetween, and proximal ends of said inner and outer tubes being mutually sealed; a feed fitting connected to the proximal end of said inner tube to form a feed duct to the interior of said inner tube; and a drain fitting connected to said fluid passage between said tubes forming a drain duct.
Claim 2
Dependent Claim
166 words
An endoscope for transurethral surgery comprising a main body nonrotatably attached to and supporting an optical system and a surgical instrument; an outer tube coupled to said main body and tubularly enclosing said optical system and said surgical instrument, an inner tube inside of said outer tube and enclosing said optics and said surgical instrument, said inner tube being nonrotatably mounted relative to said main body, said optical system and said surgical instrument said outer tube being rotatably mounted relative to said main body, said optical system and said surgical instrument, said outer tube having an inside diameter sufficiently larger than the outside diameter of said inner tube to leave a fluid passage therebetween, and proximal ends of said inner and outer tubes being mutually sealed; a feed fitting connected to the proximal end of said inner tube to form a feed duct to the interior of said inner tube; and a drain fitting connected to said fluid passage between said tubes forming a drain duct.
Claim 3
Dependent Claim
32 words
An endoscope according to claim 1 wherein said feed fitting is rigidly attached to said outer tube and is permanently connected to allow flow with the feed duct in the inner tube.
Claim 4
Dependent Claim
29 words
An endoscope according to claim 1 wherein said feed fitting is rotatably mounted to said inner tube and wherein said outer tube can be coupled to the feed fitting.
Claim 5
Dependent Claim
33 words
An endoscope according to claim 1 and further comprising locking means between said inner and outer tubes for locking said tubes against relative axial motion, said locking means also comprising a rotation bearing.
Claim 6
Dependent Claim
29 words
An endoscope according to claim 1 and including at least one lip seal mounted between said inner tube and said outer tube in order to mutually seal said tubes.
References Cited (Backward Citations)
DE7426959U
Cited
US2448741A
Cited
US2487502A
Cited
DE935391C
Cited
US3144020A
Cited
US4132227A
Cited
SU759088A1
Cited
DE2803897A1
Cited
DE2915271A1
Cited
US4567880A
Cited
US4765314A
Cited
SU1391611A1
Cited
DE3615694A1
Cited
US4819620A
Cited
US4904246A
Cited
US5184602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |