Carthera SA raised €37.5 million (US$40 million) in a series B funding round that will allow the company to embark on the first pivotal trial of its Sonocloud technology. The Sonocloud-9 is the only implantable ultrasound device that can repeatedly open the blood-brain barrier and deliver effective treatment in patients with recurrent glioblastoma, Frédéric Sottilini, CEO of Carthera, told BioWorld.