Med-tech happenings, including deals and partnerships, grants, preclinical data and other news in brief: Averra, Iridex, Mellingmedical, Nitinotes, Novogene, Photosound Technologies, Ratio Therapeutics, Siemens Medical Solutions, Terrapower, Trinity Biotech, Verasonics, Vivasure Medical, Zien Medical Technologies, Zynex.