AN ELECTROSURGICAL INSTRUMENT

摘要

The present invention relates to an electrosurgical instrument, more particularly to an electrosurgical instrument for laparoscopic hysterectomy. The instrument further comprises an expandable and contractible loop positioned to controllably emerge from the distal end of the shaft; said loop defines a first electrode. The instrument further comprises at least one second electrode which in a first position are positioned within the shaft, and in a second position are expanded from the shaft. The instrument according to the invention is extremely simple to operate and the instrument therefore provides an improvement over prior art monopolar and bipolar treatment methods, both in decreasing treatment time, and simplifying control of the treatment.