An investigation of reported condition was performed.One used sample was returned for evaluation and further investigation.The review of device history record(dhr) could not be performed without a lot number.The device history record¿s (dhr) was reviewed prior to it¿s product release.The possible root cause of the reported condition was identified by ishikawa diagram which indicated the defective material, customer misuse(unintentional) operator failed to follow process or inspection procedures, machine, method and measurement related.All these causes were discarded and the potential root cause was determined to be customer manipulation(misuse).The reported condition was confirmed.The returned sample was sent to the manufacturing site for review.Based on the available information, it can be concluded that product was manufactured according to specifications and the device functioned as intended for a period of time.No corrective and preventive actions is deemed necessary at this time.The in -process controls such as personnel training, incoming quality acceptance testing for raw material, 100% in process visual inspection and visual acceptance sampling are performed in the manufacturing plant to prevent nonconforming product from leaving the manufacturing operations.This complaint will be used for tracking and trending purposes.Should the customer provide additional information, the file will be re-opened and the investigation summary will be amended as appropriate.If information is provided in the future, a supplemental report will be issued.
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