| 摘要 |
An electrosurgical system is provided for the treatment of tissue, the system comprising an electrosurgical generator (1) and an instrument (3) comprising an instrument shaft (10) having a longitudinal axis, and an electrode assembly (12) at one end of the shaft. The electrode assembly comprises a first treatment electrode (11), a second treatment electrode (14), and first and second return electrodes (24, 25) electrically insulated from the first and second tissue treatment electrodes by means of insulation members. The first and second treatment electrodes each have an exposed surface, the exposed surface of the first treatment electrode being such as to treat tissue disposed on the longitudinal axis, and the exposed surface of the second tissue treatment electrode being such as to treat tissue disposed laterally of the longitudinal axis. The instrument a switch by which alternatively the tissue treatment electrode can be placed in circuit with the first return electrode and the second treatment electrode can be placed in circuit with the second return electrode. |
