RecruitingPhase 1Device studyA Phase I Study of the NovoTTF-200M and Novo TTF-200A Systems for the Treatment of Refractory Spinal MetastasisThis clinical research study is to learn about the safety of the NovoTTF-200M and Novo TTF-200A Systems, when used either alone or in combination with standard therapy, in patients with tumors that did not respond to treatment.