The device was returned for analysis: model name: vnl-1570stk serial number: (b)(4) the hospital installed i7000+vnl-1570stk on jan.15 2020 and report that the cover of the lg prong was damaged which includes discolored and corroded.Then changing the cover of the lg prong triple times.Fse engineer visited the hospital and didn't find any obvious scratches on the scope connection and lg prong but that it was seriously worn.The user asked the repair and equipped another scope connection.The cover of lg prong not tolerant to peracetic acid (not the recommended chemistory) and lg prong had friction with light sources.After replacing lg prong, it appeared the corroded and scratches.It was judged by that the axis of the mirror guide rod is deviated.In addition, the corrosion from the chemistory which caused the corrosion of the cover of lg prong.No harm was caused.This complaint is being processed in accordance with dpa-qip-mdr decision backlog management plan.
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