MicroPort < sup > ® < /sup > CRM Announces PMDA Approval in Japan of PLATINIUM ™ 4LV SonR < sup > ® < /sup > CRT-D < br > < span style= " font-size:14px; line-height:22px; " > < i > PLATINIUM ™ 4LV SonR* combines quadripolar IS-4 left ventricular pacing options with SonR, the world's first and only sensor-based therapeutic optimization, for cardiac resynchronization therapy. < /i > < /span >