Definiens has appointed Michael Rasche as the company's senior vice president of global sales. He will oversee the company's global sales team. Rasche joins the company from AYOXXA Biosystems where he served as corporate vice president of global commercial operations. Prior to that, he was corporate vice president of global marketing and business development for Dako. He has also held leadership positions in with Roche and Bayer Diagnostics across 9 different countries in Europe and Latin America.