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(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).The device was not returned for evaluation.It was reported that an unknown stent delivery system was advanced down on the whisper guide wire and the stent was deployed with the allstar guide wire behind the stent to protect the pla.It should be noted that the allstar instructions for use (ifu) states: consider that if a secondary wire is placed in a bifurcation branch, this wire may need to be retracted prior to stent deployment because there is additional risk that the secondary wire may become entrapped between the vessel wall and the stent.The investigation determined the reported difficulty appears to be related to an ifu deviation.A review of the lot history record and complaint history of the reported device could not be conducted because the lot number was not provided.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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