Device evaluated by manufacturer: the device was returned for analysis.Analysis of the tip and shaft included microscopic and visual inspection.Inspection revealed an outer shaft separation located 18.7cm from the strain relief and the shaft stretched between the shaft fracture for 17.5 cm.Analysis of the rest of the device found no other damage or defect.The undamaged outer diameter (od) of the renegade hi-flo microcatheter was measured with a calibrated micrometer and met specification.The 4f hanako catheter was not returned for analysis.The reported difficulty advancing in a sheath was confirmed.Review of the product specification indicates the renegade hi-flo microcatheter is compatible with a catheter id (inner diameter) >.04.The reported information indicates the renegade hi-flo was used with a 4f/.05 catheter; therefore, there is no indication of a compatibility issue.The stretched catheter was confirmed, however; the insertion difficulty could not be replicated and clinical circumstances could not be replicated.
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Reportable based on device analysis completed on 20nov2020.It was reported that device stuck and stretched from hub towards the tip.The target lesion was located in the moderately tortuous artery.A 135/20 renegade hi-flo was selected for use.During procedure, it was noted that the device was stuck when crossing through the 4f non-boston scientific sheath.The device was removed without resistance and noted to have stretched from the hub 15cm towards the distal tip.The procedure was completed with a different device.No patient complications were reported.However, device analysis revealed outer shaft separation at 18.7cm from the strain relief.
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