This report is part of a retrospective review and remediation efforts in response to a warning letter.(b)(4).S/w version 4.11c.Retainer ring - black.Customer returned pump for an alleged pump error 53 found on (b)(6) 2021.Pump passed the self test and displacement test.The history download confirmed pump error 53 due to software error on (b)(6) 2021 at 16:00 and (b)(6) 2021 at 15:00.No pump error 53 alarms noted during testing.However, the formatted history file confirmed pump error 53 alarm (line number (b)(4) file number (b)(4)).Problem isolated to the electronic assembly as per global logic analysis (b)(4).The pump was cut open and the electronic assembly was inspected, no anomalies noted.The following was noted by visual inspection: pillowing keypad overlay, scratched case and minor scratches on lcd window.In summary, customers alleged pump error 53 was confirmed by using the pump history download and caused by a software error.Medtronic, inc.(medtronic) is submitting this report to comply with 21 c.F.R.Part 803, the medical device reporting regulation.This report is based upon information obtained by medtronic, which the company may not have been able to fully investigate or verify prior to the date the report was required by the fda.Medtronic has made reasonable efforts to obtain more complete information in the time allotted and has provided as much information as is available to the company as of the submission date this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employees caused or contributed to the event described in the report.In particular, this report does not constitute an admission by anyone that the product described in this report has any "defects" or has "malfunctioned".These words are included in the fda 3500a form and are fixed items for selection created by the fda, to categorize the type of event solely for the purpose of reporting pursuant to part 803.Medtronic objects to the use of these words and others like it because of the lack of definition and the connotations implied by these terms.This statement should be included with any information or report disclosed to the public under the freedom of information act.
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