NxThera Inc. has raised $2 million from the sale of equity and warrants, according to documents filed with the Securities and Exchange Commission.
The start-up, based in St. Paul, is developing ways to treat enlarged prostates by using vapor injections and thermal energy to kill tissue.
Since last December, NxThera has raised $4 million from the sale of equity and investors like Arboretum Ventures, Aberdare Ventures, GDN Holdings, an investment firm run by former Medtronic vice chairman Dr. Glen Nelson.
CEO Robert Paulson formerly led Restore Medical Inc., a company based in Roseville that focused on treating sleep apnea. Medtronic Inc. purchased Restore in 2008 for nearly $30 million.