Med-tech happenings, including deals and partnerships, grants, preclinical data and other news in brief: Apollo Endosurgery, Avacta, Gallup, Dentsply Sirona, Hancock Jaffe, Hologic, Ion Beam Applications, Mainstay Medical, Motus GI, Ndc, North American Dental Group, North Star Medical Radioisotopes, Oxford Immunotec Global.