Text A / 509 Words / Time for reading: 3.5 minutes /The European Commission said on Thursday it would toughen the regulation of medical devicesas a result of concerns raised by breast implants produced by the defunct French companyPIP, even as a scientifi c expert review it ordered concluded there was currently “insuffi cient evidence”that women using its products facedgreater health risks than others.John Dalli, health and consumer policy commissioner, pledged to examine surveillanc