NxThera Inc. raised $1 million from the sale of debt and convertible notes according to a U.S. Securities and Exchange Commission filing.
The St. Paul, Minn.-based start-up is developing ways to treat enlarged prostates by using vapor injections and thermal energy to kill tissue.
CEO Robert Paulson formerly led Restore Medical Inc., a Roseville, Minn.-based company that focused on treating sleep apnea. Medtronic Inc. (NYSE:MDT) purchased Restore in 2008 for nearly $30 million.
Last December, NxThera raised $3 million from investors, including Arboretum Ventures, Aberdare Ventures and GDN Holdings, an investment firm run by former Medtronic vice chairman Dr. Glen Nelson.
