(b)(4).The customer returned a spring-wire guide assembly (with guide wire retracted), a separate single guide wire and an introducer catheter (from catheter-over-needle subassembly) for evaluation.Each of the components showed evidence of use.The introducer catheter was visually examined and no defects or anomalies were observed.The guide wire that was returned retracted within the advancer assembly was observed to be kinked with offset coils in several locations towards the distal tip.The other guide wire was slightly deformed but no distinct kinks were observed.The introducer catheter inner diameter, the catheter outer diameter, and the overall length of the catheter were measured and found to be within specification.The outer diameter of the guide wires were also found to be within specification.The undamaged spring-wire guide was inserted into the catheter hub 4 times, rotating the catheter turn between insertions.Resistance was encountered during each of the insertions preventing the spring-wire guide from passing through the catheter.After functional testing, the hub of the catheter was cross-sectioned and microscopically examined.The hub was found to be de formed at the transition point.Other remarks: a device history record (dhr) review was performed on the introducer catheter and no relevant manufacturing issues were identified.The customer complaint of a blockage in the introducer catheter preventing the advancement of the guide wire was confirmed during sample investigation.During functional testing it was found that the spring-wire guide would not pass through the catheter at certain orientations.The introducer catheter was cross-sectioned and a molding issue was identified inside the hub.The probable cause of this issue is manufacturing related.The defect observed is consistent with defects documented in a previously opened capa, which has been initiated to further investigate this issue.The capa corrective actions have not yet been implemented.
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