US-based medical device developer Ivantis has closed a $25m series C round healthcare technology producer Institut Mérieux and healthcare providers Ascension Health and MemorialCare Health System.

The corporates participated through subsidiaries Mérieux Développement, Ascension Health Ventures and MemorialCare Innovation Fund, alongside investment manager RA Capital Management, which led the round, New Enterprise Associates (NEA), Delphi Ventures, Foresite Capital and GBS Ventures.

Ivantis is developing products to treat glaucoma. Its lead product, the Hydrus Microstent, is a device the size of…