The initial report for this complaint was sent in 2018.The returned sample device was forwarded to the supplier facility, (b)(4), for further evaluation.(b)(4) provided findings in january 2020.Their findings indicate as follows "one strut fracture initiated on a sidewall at an inclusion.Presence of an inclusion at the surface of a stressed section of filter may be the potential root cause for the fracture.One strut fracture initiated at od/sidewall and propagated to opposite sidewall.Post-damage of the fracture surface due to rubbing prevented identification of the root cause.Other strut fractures show evidence of overload and tool marks that are consistent with handling during retrieval of the filter".The filter was implanted for over 2 years.It is believed that the device ifu may not have been followed when retrieving the device.It cautions "excessive force should not be used to retrieve the filter".Severe mechanical damage found on the filter suggest tool damage during handling of the component during retrieval.Overload fracture is consistent with handling during retrieval of the filter.Based on (b)(4) investigation findings, the product issue was most likely due to user use.Since the issue could not be traced back to design or manufacturing defect, a corrective action will not be required at this time.H3 other text : placeholder.
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