Surgery – Instruments – Electrical application
Reexamination Certificate
2006-11-30
2010-10-19
Dvorak, Linda C (Department: 3739)
Surgery
Instruments
Electrical application
C606S045000
Reexamination Certificate
active
07815639
ABSTRACT:
A urological resectoscope (1) including a tubular, metallic external stem (2) fitted with holes (3) in its distal end zone, a tubular insulating element (7, 27, 37, 47) being affixed distally to the external stem, further including a tubular internal stem (8) configured within the external stem and resting against it in a sealing manner and an electrode support (13) longitudinally displaceable inside the internal stem and supporting a cutting loop (15) in the region of the insulating element (7, 27, 37, 47). The insulating element (7, 27, 37, 47) is configured in a longitudinally mutually overlapping manner within an affixation zone (6) and the insulating element (7, 27, 37, 47) exhibiting a wall thickness distally from the affixation zone (6) larger than the wall thickness of the external stem (2), wherein the inside diameter of the insulating element (27, 47) is the same as the inside diameter of the external stem (2).
REFERENCES:
patent: 3973568 (1976-08-01), Iglesias
patent: 4726370 (1988-02-01), Karasawa et al.
patent: 6471701 (2002-10-01), Brommersma et al.
patent: 6755826 (2004-06-01), Valencic et al.
patent: 3603758 (1986-08-01), None
patent: 10122465 (2002-08-01), None
Dvorak Linda C
Lee Benjamin
Olympus Winter & IBE GmbH
Rankin , Hill & Clark LLP
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