(b)(4).The customer returned one snaplock assembly and two epidural catheter pieces.The returned components were received connected together.The returned components were visually examined with and without magnification.Visual examination of the returned snaplock assembly revealed the snaplock appears typical with no observed defects or anomalies.Visual examination of the returned catheter pieces revealed on the likely most proximal piece, the coil wire is extremely slightly stretched at the likely distal end as the wire stretches approximately 10cm beyond the extrusion.The extrusion and coil wire on the likely most distal piece are also stretched at the point of separation at the likely proximal end with the coil wire extending approximately 10mm beyond the extrusion.The proximal end of the returned catheter appears to be intact, however, the distal end appears to have been cut.The catheter appears to have been used as biological material can be seen on the inner coils.No other defects or anomalies were observed.The customer also provided a photo that appear to show a separated epidural catheter.A dimensional inspection was performed on the catheter using a ruler.The proximal end catheter extrusion piece measures approximately 29.7cm.The distal end catheter piece measures approximately 12.7cm.Both catheter pieces combine to measure approximately 42.4cm.This indicates at least 46.1cm of the extrusion is missing as the spe cification for the epidural catheter indicates that the proper extrusion length of an epidural catheter is 88.5-91.5cm per graphic.The ifu for this kit warns the user, "never tug or quickly pull on catheter during removal from patient to reduce risk of catheter breakage.Do not apply additional tension on the catheter if catheter begins to stretch excessively.Reposition patient to open the vertebral interspaces and re-attempt removal if resistance is encountered or if catheter stretches excessively during removal." the reported complaint of epidural catheter breaking during use was confirmed based upon the sample received.The customer returned two catheter pieces that were separated at the extrusion.Part of the returned catheter appeared to be missing as the distal tip appeared to have been cut.At the point of separation, the coil wire is extremely stretched on the likely proximal piece and is also stretched on the likely distal piece.The ifu for this product warns the user not to apply additional tension if the catheter begins to stretch as there is a risk for separation.Therefore, based upon the condition of the sample received, unintentional user error caused or contributed to this event.No further action is required at this time.Other remarks: n/a, corrected data: n/a.
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