VytronUS, a medical device startup that remains secretive about its product, has raised another $11 million in its first round of funding, according to VentureWire. That new money, from existing investors Delphi Ventures and New Enterprise Associates, brings the total amount raised to $17 million.

The Sunnyvale, Calif., company says it’s developing a cardiovascular device that’s entering animal trials, but isn’t offering more details.