US5031603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uretero-renoscope
Assignee: Richard Wolf GmbH
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Filing: 1990-03-12
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Granted: 1991-07-16
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Expires: 2010-03-12
Abstract
Abstract A uretero-renoscope assembly comprises a first shaft to accommodate an optical system and an auxiliary instrument passage, this first shaft being connected at its proximal end to a housing provided with connections for a light conductor cable and for the infeed or discharge of flushing fluid or the like. The first shaft has a cross-sectional area which decreases in steps in the distal direction, and has a circular cross-section at its proximal end which merges into an oval cross-section at the distal end. A second shaft of circular cross-section can be pushed onto the first, with the first shaft in position in the ureter after withdrawal of the uretero-renoscope, forming a further stepped increase in cross-section and providing a further passage, for example for flushing fluid.
Inventors
- 👤 Jean-Romain Gautier
- 👤 Ludwig Bonnet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:44
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/307
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
A uretero-renoscope comprising: a first shaft for an optical system, said shaft having proximal and distal ends and having a cross-section which reduces in a plurality of steps from said proximal end to said distal end, said first shaft having a distal end portion of oval cross-section which merges in a direction towards said proximal end into a portion of circular cross-section; an additional instrument passage formed through said first shaft; a housing connected to said first shaft at its proximal end and having thereon connection means for a light conductor cable and inlet and outlet means for a flushing fluid; a second shaft of larger cross-section than the first shaft and releasably securable to said first shaft, at a proximal position relative to said steps, to form an additional step and coupling means on said housing for releasably securing said second shaft thereto.
Claim 2
Dependent Claim
144 words
A uretero-renoscope comprising: a first shaft for an optical system, said shaft having proximal and distal ends and having a cross-section which reduces in a plurality of steps from said proximal end to said distal end, said first shaft having a distal end portion of oval cross-section which merges in a direction towards said proximal end into a portion of circular cross-section; an additional instrument passage formed through said first shaft; a housing connected to said first shaft at its proximal end and having thereon connection means for a light conductor cable and inlet and outlet means for a flushing fluid; a second shaft of larger cross-section than the first shaft and releasably securable to said first shaft, at a proximal position relative to said steps, to form an additional step and coupling means on said housing for releasably securing said second shaft thereto.
Claim 3
Dependent Claim
27 words
A uretero-renoscope as claimed in claim 1 wherein said second shaft is of circular cross-section and is shaped and dimensioned to be pushed onto said first shaft.
Claim 4
Dependent Claim
27 words
A uretero-renoscope as claimed in claim 1 wherein said coupling means for the second shaft comprises a coupling cone on a distal end portion of said housing.
Claim 5
Dependent Claim
42 words
A uretero-renoscope as claimed in claim 3 wherein said second shaft is provided with a clamping ring which is releasably attachable to said coupling cone to secure the second shaft releasably to the housing at a proximal end portion of the shaft.
Claim 6
Dependent Claim
31 words
A uretero-renoscope as claimed in claim 1 wherein said second shaft has a proximal end provided with coupling means and a distal end provided with openings for the passage of fluid.
Claim 7
Dependent Claim
23 words
A uretero-renoscope as claimed in claim 1 wherein said steps are spaced from one another at intervals of about 5 to 50 mm.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |