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Trackwise id # (b)(4).Updated sections: g-3, g-6, h-2, h-6, h-11.The investigation has been started since the complaint was received, and the following contents have been conducted: 1.Dhr review: the dhr of the reported lot has been reviewed.No non-conformity relevant with the reported issue is observed.All the products had been performed 100% visual inspection during production.They all passed the inspection which demonstrate the part package is integrated.2.Trend review: in the last 12 months, the occurrence rate is found to be 0.007% which is under anticipated occurrence rate.3.The device was not received which could not be evaluated, the reported failure could not be confirmed.The manufacture processes were reviewed and no deficiency indicating the reported failure was observed, which demonstrated the production process are normal and all devices were packaged correctly.Since no picture or user details is available for review, the specific root cause is impossible to define.The ifu has the warnings and precautions that ¿do not use if the product sterilization barrier or its packaging is compromised.¿ and the device missing could be identified by customer before using, there was no patient involved, no ncrs, rework, or deviations documented for the reported batch.Based on above review results, it was determined that there is no relation between the batch manufacturing process and the reported failure.
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