The following were reviewed as part of this investigation: patient severity, applicable previous investigation(s), sample (if available), applicable fmea documents, labeling, and applicable manufacture records.Based on a review of this information, the following was concluded: the device was returned to the service facility for evaluation.During evaluation, the reported issue of interference/artifact issues with sherlock was unconfirmed.The customer sherlock display an internal ekg when connected both the yellow and white lines are present.The customer sherlock was tested in every usb port with the ac adapter connected and once without the ac adapter both times the sherlock operated normally with no visual errors noted.The root cause of the reported failure is inconclusive as the reported issue could not be reproduced during evaluation.The device was serviced, tested, and returned to the customer.A history review of serial number (b)(6) showed no other similar product complaint(s) from this serial number.
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