A visual inspection was performed on the returned device.The reported stent dislodgement and material deformation were confirmed.The reported failure to advance could not be evaluated as the exact anatomical conditions encountered by the device used during the procedure could not be replicated in the test laboratory.The reported difficult to remove could not be tested due to the condition of the returned device.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other incidents.The investigation determined the reported difficulties appear to be related to the operational context of the procedure, as it is likely that the device interacted with the heavily calcified, moderately tortuous lesion during advancement, causing the reported failure to advance.Further interaction with the challenging anatomy and accessory devices during retraction of the device, as resistance was noted, likely caused the reported material deformation which contributed to the reported difficult to remove, ultimately causing the reported stent dislodgement.There is no indication of a product quality issue with respect to manufacture, design, or labeling; therefore, no product-related corrective action will be implemented in this case.
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