High-frequency resectoscope implement
AssigneeOlympus Winter & Ibe GmbH
InventorsPieter Brommersma, Yasuhiko Kikuchi
Life of this patent
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Abstract
An hf resectoscope implement for cutting body tissue in a body cavity filled with an electrically conducting fluid and comprising a loop support and a loop-shaped cutting electrode mounted distally on the support. A plane of the cutting electrode slants relative to a longitudinal axis of the loop support. The implement also includes a neutral electrode mounted on the support. An insulator is mounted at the loop support between the electrodes such that any straight geometric line between the electrodes passes through the insulator. The neutral electrode and the insulator are configured to not significantly hamper the view available via optics fitted in the resectoscope stem tube.
Claims12
A high-frequency (hf) resectoscope implement (1) for cutting body tissue in a body cavity filled with an electrically conducting fluid, comprising a loop support (6) and a loop-shaped cutting electrode (3) mounted distally to said loop support, a plane of said loop-shaped cutting electrode slanting relative to a longitudinal axis of the loop support (6), said implement further comprising a neutral electrode (9) mounted on said support, wherein an insulator (7) is mounted between the cutting and neutral electrodes (3, 9) at the loop support (6) such that any straight geometric line drawn between the electrodes (3, 9) passes through the insulator (7), and wherein the neutral electrode (9) and the insulator (7) are configured such that, when disposed in an active position within a resectoscope (20), they do not significantly hamper a view through an optics (22), which is mounted in a stem tube (21) of said resectoscope (20).
Dependencies are inferred from the claim text.