EBR Systems (ASX:EBR) reported March quarter revenue of $2.4 million, compared to $935,000 in the previous quarter, according to a Monday Australian bourse filing.
Its WiSE heart pacing system was implanted in 41 commercial patients during the three months, increasing total commercial implants across the pilot phase and limited market release to 71.
It signed an additional 16 purchase agreements with target centres during the quarter, adding to the 21 signed in previous quarters.
Its shares fell 5% in recent trading on Tuesday.