Officials at EndoShape did not immediately return a phone call seeking comment.
EndoShape, headed by president and chief executive Bill Aldrich, received clearance from the U.S. Food and Drug Administration last November to start selling a device that closes blood vessels to stop internal bleeding.
The trademarked Medusa Vascular Plug is delivered through a catheter during surgery. It can be used after a car accident to help stop internal bleeding in a patient, for example, as well as in other surgeries.
The device was developed from research conducted at the University of Colorado.
Previous investors include High Country Venture LLC in Boulder and Volcano Capital in New York. EndoShape also received a $401,000 federal grant from the Qualifying Therapeutic Discovery Project program in 2010.