Within the Rotary-Cutting Biopsy System for Breast Lesion segmentation by type, three device architectures dominate: Rotary‑needle systems, Rotary‑blade platforms, and Hybrid rotary‑cut devices. Rotary‑needle systems, comprising a cylindrical, rotating needle tip, capture the largest share (≈60 %) due to their compatibility with existing biopsy gun workflows and lower capital outlay. Rotary‑blade platforms, which employ a rotating flat blade to excise cylindrical cores, hold about 25 % of the market; they are preferred in settings requiring larger tissue volumes for molecular profiling, despite higher instrument cost. Hybrid devices, integrating both needle rotation and blade excision mechanisms, occupy the remaining 15 % and are emerging in high‑volume academic centers where flexibility across lesion sizes is essential. The distribution of these types directly influences overall market size, as each carries distinct pricing structures, consumable requirements, and adoption barriers, thereby shaping the competitive landscape and informing product‑development roadmaps.