AorTx, a secretive Redwood City company developing a aortic valve replacement technology, has raised $5.8 million in two rounds of funding.

LinkSV reported the company raised $2.7 million earlier this year, and VentureWire reported (sub required) it has just raised more in first round, for a total of $5.8 million.

The company is moving from animal to human trials.

Investors include Bio-Star Private Equity Fund, Saratoga Ventures, MedFocus, Wilson Sonsini Goodrich & Rosati and St. Jude Medical.