Australia's EBR Systems rises on heart pacer implants in the U.S.

Shares of EBR Systems EBR.AX rises as much as 9.5% to A$1.215, set for their strongest intraday session since May 23

Medtech firm says heart pacer WiSE System has been successfully implanted in the first commercial patients in the U.S., following recent FDA approval

Adds, it remains on track for initiation of its limited market release and expected reimbursement add-on payments commencing October

Stock last up 5.4%, taking YTD gains to 14.2%