Electrode assemblies for applying tumor treating fields (ttfields) to a subject’s body with a strain relief that absorbs cable-induced strain

Abstract

Tumor Treating Fields (TTFields) therapy is a proven approach for treating tumors using alternating electric fields. The TTFields are induced by electrode assemblies positioned on the subject’s skin. When the electrode assemblies are implemented using flex circuits, the place where the cable terminates on the flex circuit is susceptible to mechanical failure. By incorporating a flex circuit that is bent back on itself so that one region of the PCB is positioned behind another region of the PCB, the embodiments described herein absorb mechanical strain that is induced by pulling upon the cables before those strains can reach the flex circuit. And this advantageously reduces the incidence of mechanical failures.

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