Integra has completed their internal investigation on march 20, 2014.The investigation included: methods: evaluation of actual device, review of device history records, review of complaints history.Results: no device has been returned to integra for analysis.Dhr review; no traceability information was provided, no device history records review could be performed.Complaints history; from january 2013 ¿ march 20, 2017, a total of three (3) complaints (including this one) for osv ii valve systems have been reported for overdrainage.No adverse trend is observed.(b)(4).Conclusion: the exact root cause of the reported overdrainage could not be determined.Valve overdrainage is a known complication of valve therapy, identified in the product risk management and in the device labeling.
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