(b)(4).The device was received for sample evaluation.The event history log review showed no keystrokes, programming, or use related events that indicated and/or contributed to the reported issue.A service history review revealed no indication that the parts replaced during servicing caused or contributed to the reported event.Internal and external inspection was performed and no issues were noted.A short simulated therapy was successfully performed.Sample evaluation included functional and electrical testing of the device.Upon conclusion of the investigation, the product met all testing specifications.The cause of the reported event could not be determined.Should additional relevant information become available, a supplemental report will be submitted.
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