Calyxo, a medical device company developing next-generation treatment solutions for patients with kidney stones, has announced the closing of a $50 million Series D financing round led by Avidity Partners with significant participation from existing investors Questa Capital and CRG.

Calyxo is an innovation-driven medical device company focused on improving care for patients with kidney stones by delivering paradigm-shifting solutions that enable urologists to safely, effectively and efficiently achieve unrivaled clinical outcomes.