Apieron, maker of a device that monitors asthmatic conditions, has brought in an undisclosed sum in a fourth round of financing from existing investors Alliance Technology Ventures, Canaan Partners, Draper Fisher Jurvetson and Onset Ventures. Based in Menlo Park, Calif., the company says its lead product, which measures lung inflammation, has already earned requisite approval. It says the new funds will go toward marketing and further product development.
In 2003, Apieron brought in $4.6 million from Onset and Alliance. It also took $16 million in second-round funding from Canaan and $17 million in third-round funding from DFJ. In October, it announced it would be seeking $25 million in a fourth round, but it's unclear whether that was the amount received.