Visual and functional analysis was performed on the return device.The reported balloon rupture and expansion failure of the stent was confirmed.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 similar incidents and/or complaints from this lot.The investigation determined that that the reported difficulties were due to case circumstances.It is likely that the balloon rupture was the result of interaction with the calcified lesion.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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