A cautery catheter is described having an expandable and electrically conductivemesh that can cauterize treatment sites having large effective surface areas.The mesh is composed of interwoven filaments which are aligned with the cauterycatheter in an unexpanded state. Reorientation of the filaments of the mesh enablesexpansion of the mesh. When the expanded mesh contacts the desired treatmentarea, an electrocautery unit supplies electrical energy to the filaments ofexpanded mesh to cauterize the treatment site.
