An electrode device adapted for use in medical devices, such as tissue
ablation apparatus, includes a sheet of flexible fabric including at
least one surface electrode formed as part of the fabric. More
particularly, the sheet is made from a plurality of filaments. At least
some of the filaments are made at least partially from an electrically
conductive material and cooperate so as to form the electrode. The
filaments are formed into a plurality of yarns which are interwoven to
form the sheet.