Breakthrough medical platform offers vision of personalized tumor treatments with its novel sonic beam therapy ANN ARBOR, Mich., April 8, 2019-- HistoSonics, developer of a non-invasive robotics platform and novel beam therapy, announced today that it has closed a $54 million Series C financing. The round was led by Varian Medical Systems, Inc., the global leader in radiation therapy and oncology solutions, and included healthcare investors Johnson & Johnson Innovation - JJDC, Inc. (JJDC), Lumira Ventures, Venture Investors, the State of Wisconsin Investment Board, as well as participation from existing investors.