A cautery catheter is described having an expandable and electricallyconductive mesh that can cauterize treatment sites having large effectivesurface areas. The mesh is composed of interwoven filaments which are alignedwith the cautery catheter in an unexpanded state. Reorientation of thefilaments of the mesh enables expansion of the mesh. When the expanded meshcontacts the desired treatment area, an electrocautery unit supplieselectrical energy to the filaments of expanded mesh to cauterize the treatmentsite.
