a breast brachytherapy applicator providing a stable semi permanent / permanent in dwelling platform that is configured to replicate anatomically the excised cancer bed and allows for a more precise anatomically correct delivery of limited field radiation treatment . this device may be used to reconstitute a resected tissue space to its pre - operative size and shape to 1 ) facilitate the accurate and precise delivery of adjunctive breast brachytherapy following breast cancer surgery and 2 ) prevent / decrease post - operative deformity as a result of surgical resection , whether for benign or malignant disease , and in particular after radiation treatment of malignant disease in the post lumpectomy patient .