Patent ID: 6134476
Filing Date: 2000-10-17
Classification: A61B,A61F,A61N

Abstract:
A transcatheter microwave antenna, comprising:a catheter having first and second opposing ends, said first end being adapted for connection to a microwave power source, said catheter having a center conductor and an outer conductor, said catheter having an interior insulator disposed between said center conductor and said outer conductor, said second end of said catheter having a feedpoint;a microwave antenna disposed on said second end of said catheter at said feedpoint, said microwave antenna comprising,an antenna conductor, said antenna conductor electrically connecting to said center conductor at said feedpoint, andan antenna insulator surrounding said antenna conductor, anda surface wave attenuator positioned adjacent said feedpoint, said surface wave attenuator comprising a conductor in surrounding relationship to said inner insulation material, said conductor having no outer covering of insulation material thereon, said conductor being in contact with said outer conductor.