Concentric Medical, headquartered in Mountain View, CA, is a pioneer in the field of stroke treatment. Their flagship product, the Merci Retriever, is a minimally invasive device that removes blood clots from the neurovasculature, restoring blood flow and offering hope to patients with ischemic stroke. The company has received FDA clearance and completed pivotal trials, making them the first to bring such a device to market. Concentric Medical also offers Merci microcatheters, which are designed to navigate the vasculature and deliver the Merci Retriever to the affected vessels in the brain.