TidalSense, a Cambridge-based healthtech startup, raised 19 million USD in a funding round. The round included new investor Cross-Border Impact Ventures and returning investors BGF, Airstream Capital and Foresight Group. The company said it will use the funding to accelerate rollout of its COPD diagnostic test across the NHS, expand in Europe, and pursue entry into the US market. The company was founded in 2013 and says it has raised 40 million USD in total, including 11 million USD in grant funding.