A device history record (dhr) review was conducted which indicated all inspections were completed and no issues were noted during manufacture.The device was returned for evaluation.Visual and functional tests were performed.It was confirmed that when connecting the flat filter and the epifuse connector, the collar easily came off and moved to the epifuse connector.It was observed that the retention edge of the collar was slightly crushed.The root cause of the reported issue was not possible to identify the cause of the event.The supplier and the manufacturing department will be notified, record this event in the database, and monitor the future occurrence situation.Device information is unknown.No product information has been provided to date.This remediation mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).
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