Therapeutic ultrasound developer Kona Medical has begun its fourth clinical trial for its Surround Sound hypertension therapy system.
The randomized, double-blind trial will treat 132 subjects at sites in Europe, New Zealand, Australia, and South America, according to the firm.
Surround Sound uses ultrasound to treat nerves leading to and from the kidneys. When hypertension is not adequately treated by lifestyle modifications and medication, these nerves may be overactive, contributing to high blood pressure, Kona Medical said.
To date, 69 patients have been treated with Surround Sound across three clinical trials. Results from the previous studies demonstrated a response in approximately 75% of patients at six months, according to the company.
