(b)(4).Attempts have been made to retrieve the device.To date the device has not been returned.If the device or further details are received at a later date a supplemental medwatch will be sent.At the time of this submission, the device has not been returned for analysis.The following information was requested, but unavailable: was "black washer" removed from patient? was there any change to procedure or post-op patient care? how was case completed? is lot number available for device? is device available to send back for analysis?.
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