High-frequency instrument for endoscope

摘要

A high-frequency instrument for an endoscope including an electrically insulating sheath having a high-frequency electrode provided at the distal end thereof. A operating part is connected to the proximal end of the sheath. The operating part has an electrically conducting member electrically connected to the high-frequency electrode. An electrically insulating member covers the whole outer surface of the electrically conducting member. An electrically conductive rod electrically connected to the electrode may be inserted in the sheath. An electrically insulating member covers the whole outer surface of the rod except a portion thereof that is engageable with an operating member.