Gauss Surgical expects that its real-time blood loss monitoring system could help reduce the perceived need for transfusions–which it says are inappropriately used up to 60% of the time.

The startup has raised $3.3 million to support its Triton System that offers a fast, easy assessment of blood loss during surgery.

The system is already in use at Cedars-Sinai Medical Center, UC Irvine Healthcare, the Memorial Care Health System and other hospitals.