US3850162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscope with continuous irrigation
Assignee: Individual
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Filing: 1973-06-08
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Granted: 1974-11-26
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Expires: 1993-06-08
Abstract
Abstract An endoscope for transurethral examination and operations has two conduits within the sheath of the instrument, one to provide continuous inflow of clear irrigating fluid to the operative field, and the second to provide continuous outflow of turbid fluid from the operative field, the distal ports of the two conduits being on opposite sides (i.e., proximate and distal) of the objective lens of the telescope of the instrument, and the tube of the telescope being concentric with the sheath to provide increased space within the sheath to permit conduits of sufficient size to accommodate the required flow of fluid.
Inventors
- 👤 J Iglesias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:28
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00091; A61B1/00131; A61B1/00135; A61B1/012; A61B1/015; A61B1/018; A61B1/12; A61B1/307; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/149
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
A urological endoscopic instrument, comprising an elongated cylindrical beaked sheath through which an instrument is extended axially to a position outside the sheath for performing a urological procedure, a telescope tube extending longitudinally and interiorly of the sheath and being concentric therewith and having an objective lens at its distal end, an inflow conduit extending longitudinally and interiorly of the sheath above the telescope tube and having its distal end distal to the objective lens, an external connection at the proximate end of the inflow conduit, the interior of the sheath below the conduit providing an outflow conduit having its distal end proximate to the objective lens, and a second external connection at the proximate end of the sheath which communicates with the outflow conduit.
Claim 2
Dependent Claim
125 words
A urological endoscopic instrument, comprising an elongated cylindrical beaked sheath through which an instrument is extended axially to a position outside the sheath for performing a urological procedure, a telescope tube extending longitudinally and interiorly of the sheath and being concentric therewith and having an objective lens at its distal end, an inflow conduit extending longitudinally and interiorly of the sheath above the telescope tube and having its distal end distal to the objective lens, an external connection at the proximate end of the inflow conduit, the interior of the sheath below the conduit providing an outflow conduit having its distal end proximate to the objective lens, and a second external connection at the proximate end of the sheath which communicates with the outflow conduit.
Claim 3
Dependent Claim
141 words
A urological endoscopic instrument, comprising an elongated cylindrical beaked sheath through which an instrument is extended axially to a position outside the sheath for performing a urological procedure, a telescope tube extending longitudinally and interiorly of the sheath and having an objective lens at its distal end, an inflow conduit extending longitudinally and interiorly of the sheath above the telescope tube and being formed by the upper wall of the sheath and a second wall spaced inwardly of the sheath therefrom and having its distal end distal to the objective lens, an external connection at the proximate end of the inflow conduit, the interior of the sheath below the conduit providing an outflow conduit having its distal end proximate to the objective lens, and a second external connection at the proximate end of the sheath which communicates with the outflow conduit.
Claim 4
Dependent Claim
141 words
A urological endoscopic instrument, comprising an elongated cylindrical beaked sheath through which an instrument is extended axially to a position outside the sheath for performing a urological procedure, a telescope tube extending longitudinally and interiorly of the sheath and having an objective lens at its distal end, an inflow conduit extending longitudinally and interiorly of the sheath above the telescope tube and being formed by the upper wall of the sheath and a second wall spaced inwardly of the sheath therefrom and having its distal end distal to the objective lens, an external connection at the proximate end of the inflow conduit, the interior of the sheath below the conduit providing an outflow conduit having its distal end proximate to the objective lens, and a second external connection at the proximate end of the sheath which communicates with the outflow conduit.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |