This remediation mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).Additional information: g5 and expiration date.E4 is unknown.No problem or issues were identified during the device history record review.A sample and pictures were received for evaluation.The sample was received without its original packaging.During visual inspection, it was noticed that inside of the tube there was a flash which slightly reduced inner diameter of tracheostomy tube.The flash caused reported difficulties when obturator was inserted or removed from tracheostomy tube.Such defect is not in compliance with visual standard.Returned sample was tested by ball bearing dedicated for 7.0mm size.It was found that steel ball cannot go through tracheostomy tube and it was stacked in area where tube is connected with a 15mm connector.Complaint history was checked and this is the first reported incident.Current production was checked by manufacturing quality engineer and no fault was found, parts were acceptable both visually and by functional testing, ball bearing passed.Based on above investigation tracheostomy tube with flash inside is considered to be isolated incident.Root cause is unknown.During manufacturing process there are following checks which should detect reduced internal diameter of tracheostomy tube: sample functional checks of inner diameter by ball bearings (steel ball must go trough whole tube length and 100 percent visual inspections (after molding and during tracheostomy tube assembly process).To increase awareness about this issue a quality alert was placed on tube molding and tube assembly.
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