It was reported that this was a percutaneous intervention to treat the bilateral iliac arteries.When the 9.0x29 mm omnilink elite was being removed from the packaging hoop, the stent fell off of the stent delivery system on the back table; there was no patient involvement.Another 9.0x29 mm omnilink elite was prepared and inserted into the 6 french sheath, but was not able to come out of the sheath to use in the patient.The sheath had to be removed from the patient so the omnilink elite could be removed from the sheath.A new 6 french sheath of the same brand was used in the patient with two 8.0x29 omnilink elite stents without further incident.The physician felt that the first two omnilink elite stents were not crimped on the balloon delivery system properly.There were no adverse patient effects and no clinically significant delay in the procedure.There was no additional information provided.
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Visual, dimensional and functional inspections were performed on the returned device and the reported stent difficulty to advance and remove were confirmed.The reported stent dislodgement was unable to be confirmed as the stent was located between the markers as intended.There was no damage and no anomalies noted to the stent.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Based on the review of similar incidents there is no indication of a lot specific product quality issue.Potential factors that may contribute to difficulty to advance and cause resistance between the omnilink elite and the introducer sheath (is) include, but are not limited to, manufacturing, incorrect size is used, sheath id (inner diameter), stent od (outer diameter), damage to the stent or damage to the is.The investigation was unable to determine a conclusive cause for the reported difficulty to advance and remove the stent delivery system (sds) through the is.The noted kinked shaft likely occurred during packing for return analysis.There is no indication of a product quality issue with respect to the design, manufacture.
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