Electro-surgical treatment instrument
First Claim
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1. An electro-surgical treatment instrument for cutting and coagulating a tissue with a high frequency current comprising:
- a holder having a proximal end for placement near the tissue and a distal end;
first and second coagulation electrodes movably coupled to the proximal end of the holder so that the coagulation electrodes can be brought into contact with the tissue during an operation;
a cutting electrode fixed to the holder and extending from the proximal end, the coagulation electrodes being axially displaceable relative to the cutting electrode and the holder;
a radio frequency generator connected to the distal end of the holder, the generator supplying the high frequency current to the first and second coagulation electrodes and the cutting electrode; and
an annular insulation layer disposed between the first and second coagulation electrodes, the insulation layer providing a spacing between said coagulation electrodes which is small enough so that the high frequency current flows between said coagulation electrodes to coagulate the tissue when the instrument is brought into contact with the tissue.
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Abstract
The invention relates to an electro-surgical treatment instrument with a der 16 connectable to a radio frequency generator with two electrodes 11, 12 being arranged at the proximal end of the holder which can be brought into contact with the tissue of a patient, which are mutually insulated relative to one another and which are fed with rf-voltage. A cutting electrode 13 is centrally provided.
367 Citations
15 Claims
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1. An electro-surgical treatment instrument for cutting and coagulating a tissue with a high frequency current comprising:
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a holder having a proximal end for placement near the tissue and a distal end; first and second coagulation electrodes movably coupled to the proximal end of the holder so that the coagulation electrodes can be brought into contact with the tissue during an operation; a cutting electrode fixed to the holder and extending from the proximal end, the coagulation electrodes being axially displaceable relative to the cutting electrode and the holder; a radio frequency generator connected to the distal end of the holder, the generator supplying the high frequency current to the first and second coagulation electrodes and the cutting electrode; and an annular insulation layer disposed between the first and second coagulation electrodes, the insulation layer providing a spacing between said coagulation electrodes which is small enough so that the high frequency current flows between said coagulation electrodes to coagulate the tissue when the instrument is brought into contact with the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electro-surgical treatment instrument for cutting and coagulating a tissue with a high frequency current comprising:
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a holder having a proximal end for placement near the tissue and a distal end; first and second coagulation electrodes movably coupled to the proximal end of the holder so that the electrodes can be brought into contact with the tissue during an operation; a small area cutting electrode removably mounted to the proximal end of the holder with at least one of the coagulation electrodes and being fixed to the holder, the coagulation electrodes being axially displaceable relative to the cutting electrode; a radio frequency generator connected to the distal end of the holder, the generator supplying the high frequency current to the first and second coagulation electrodes and the cutting electrode; and an annular insulation layer disposed between the first and second coagulation electrodes, the insulation layer providing a spacing between said coagulation electrodes, the spacing being small enough so that the high frequency current flows between said coagulation electrodes to coagulate the tissue when the instrument is brought into contact with the tissue.
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Specification