Bipolar medical instrument and electrosurgical system comprising such an instrument
AssigneeKarl Storz GmbH & Co. KG
InventorMartin Blocher
Life of this patent
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Abstract
A bipolar medical instrument for cutting tissue under the action of high-frequency current comprises an elongate electrode carrier, an active electrode arranged at the distal end of the electrode carrier, and a neutral electrode adjacent to the active electrode, said neutral electrode being arranged entirely to the distal side of said active electrode. The neutral electrode and the active electrode are spaced apart from one another in the direction transverse to the longitudinal direction of the electrode carrier. The invention also describes an electrosurgical system comprising a high-frequency generator and provided with such an instrument.
Claims30
A bipolar medical instrument for cutting tissue under the action of high-frequency current, comprising
- an elongate electrode carrier extending in a longitudinal direction and having a distal end,
- an active electrode arranged at said distal end of said electrode carrier, a neutral electrode arranged at said distal end of said electrode carrier adjacent to said active electrode and arranged entirely to the distal side of said active electrode so as to be spaced apart from said active electrode in said longitudinal direction, said neutral electrode and said active electrode being also spaced apart from one another in a direction transverse to said longitudinal direction, without having a spatial overlap region in said longitudinal direction and said direction transverse to said longitudinal direction,
- wherein said active electrode is configured as a wire loop.
An electrosurgical system, comprising a high-frequency generator, and comprising a bipolar medical instrument for cutting tissue under the action of high-frequency current, said bipolar medical instrument comprising
- an elongate electrode carrier extending in a longitudinal direction and having a distal end,
- an active electrode arranged at said distal end of said electrode carrier, a neutral electrode arranged at said distal end of said electrode carrier adjacent to said active electrode and arranged entirely to the distal side of said active electrode so as to be spaced apart from said active electrode in said longitudinal direction, said neutral electrode and said active electrode being also spaced apart from one another in a direction transverse to said longitudinal direction, without having a spatial overlap region in said longitudinal direction and said direction transverse to said longitudinal direction,
- said high-frequency generator being connectable with said bipolar medical instrument for supplying a high-frequency voltage between said active electrode and said neutral electrode,
- wherein said active electrode is configured as a wire loop.
A bipolar medical instrument for cutting tissue under the action of high-frequency current, comprising
- an elongate electrode carrier extending in a longitudinal direction and having a distal end,
- an active electrode arranged at said distal end of said electrode carrier, a neutral electrode arranged at said distal end of said electrode carrier adjacent to said active electrode and arranged entirely to the distal side of said active electrode so as to be spaced apart from said active electrode in said longitudinal direction, said neutral electrode and said active electrode being also spaced apart from one another in a direction transverse to said longitudinal direction, without having a spatial overlap region in said longitudinal direction and said direction transverse to said longitudinal direction,
- wherein said neutral electrode is configured as a tape loop.
A bipolar medical instrument for cutting tissue under the action of high-frequency current, comprising
- an elongate electrode carrier extending in a longitudinal direction and having a distal end,
- an active electrode arranged at said distal end of said electrode carrier, a neutral electrode arranged at said distal end of said electrode carrier adjacent to said active electrode and arranged entirely to the distal side of said active electrode so as to be spaced apart from said active electrode in said longitudinal direction, said neutral electrode and said active electrode being also spaced apart from one another in a direction transverse to said longitudinal direction, without having a spatial overlap region in said longitudinal direction and said direction transverse to said longitudinal direction,
- wherein on at least one of said electrode carrier and said neutral electrode, at least one element is present which prevents electrically conductive contact between tissue and an outer face of said neutral electrode directed away from said active electrode, and which, when said neutral electrode changes position, moves along with said neutral electrode;
- said at least one element being arranged on said outer face of said neutral electrode directed away from said active electrode.
Dependencies are inferred from the claim text.