AN ELECTROSURGICAL INSTRUMENT

专利名称：AN ELECTROSURGICAL INSTRUMENT发明人：Goble, Nigel, Mark,Goble, Colin, Charles,

Owen

申请号：EP96918768.1申请日：19960620公开号：EP0771176B2公开日：20060104

摘要：In an electrosurgical instrument for the treatment of tissue in the presence ofan electrically conductive fluid medium (e.g. 'underwater surgery') a bipolar electrodeassembly has an active electrode having an exposed tissue treatment portion (34A), areturn electrode (38) having an exposed fluid contact surface, and an insulating member(36) positioned between and electrically insulating the active electrode in the returnelectrode. The insulating member serves to space apart the exposed active electrodetreatment portion and the exposed fluid contact portion of the return electrode. Thedimensions and configurations of the exposed portions of the electrodes and of theinsulating member are such that when the electrode assembly is immersed in aconductive fluid medium, the ratio between the longest and shortest conduction pathlenghts between the active and return (b:a) electrodes is less than or equal to 2:1. Theinvention also includes a combination of an electrosurgical instrument and a radiofrequency generator.

申请人：GYRUS MEDICAL LTD

地址：GB

国籍：GB

代理机构：Blatchford, William Michael

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