Medical device company Siemens Healthineers raised its full-year outlook following robust sales in its second quarter, driven by higher-than-expected demand for the company’s Covid-19 rapid antigen tests. The German company said on Wednesday it had revised up its year-on-year revenue expectations for the fiscal year, which ends in September. It now expect growth between 5.5% and 7.5%, compared to the previous 3% to 5%. The diagnostics segment achieved revenue growth of 37.2%. The company took in almost €680 million ($715 million) in revenue from the rapid coronavirus tests. Overall, second qua…