MEDICAL BIPOLAR ELECTRODE ASSEMBLY WITH CANNULA AND REMOVABLE SUPPLY ELECTRODE

摘要

An electrosurgical system used for denervation procedures of nerve tissue has a control unit and a pluggable electrode assembly (24). The electrode assembly has a disposable cannula (28) and a supply electrode assembly (36) . The cannula has a tubular body (29) that projects axially from a distal end for piercing tissue to a proximal end engaged to a first coupling assembly (44) of the cannula (28). The body (29) carries a first contact exposed directly to the nerve tissue and connected electrically to a terminal of the first coupling assembly (44). The supply electrode assembly (36) has a second coupling assembly (116) and a supply electrode (118) that projects axially and removably into a through -bore of the body when the tool is in an operating state. The second coupling assembly (116) carries a terminal (140) that abuts the first coupling assembly (44) when the coupling assemblies (44, 116) are mated.