Surgical snake technology developer Medrobotics Corp. closed a $11.7 million Series C funding round led by current shareholders, angel investors and the Pittsburgh Life Sciences Greenhouse.

Medrobotics, originally known as Cardiorobotics, has raised $28.3 million since it spun out of Carnegie Mellon University in 2005.

The Boston, Mass.-based med-tech maker’s robots allow surgeons to perform 2-handed surgeries in hard-to-reach anatomical areas. The robots can support their own weight and move in any 3D space without structural support.