The funding round, in addition to its prior investors Essex Woodlands, Domain Associates, Morgenthaler Ventures, Western Technology Investments, and BioStar Ventures, included two large-cap strategic investors.

Silicon Valley Bank provided the debt facility, according to the company.

The company will use the finance to further develop its non-invasive renal nerve ablation system, Kona Surround Sound system, designed to drug-resistant hypertension.

Using the company’s external Surround Sound technology, the system delivers ultrasound from outside the body, to treat the nerves leading to and from the kidney.