(b)(4).Device evaluated by manufacturer: returned product consisted of an innova self-expanding stent delivery system (sds).The outer sheath, middle shaft and the remainder of the device were checked for damage.The outer sheath showed a kink at the nosecone.The pull rack was in the start position.The wheel lock was intact.The stent was returned inside the device, but partially deployed approximately.8mm from the markerband.The wheel lock was returned on the device.The wheel lock was removed from the device and the thumbwheel was rotated to see if the stent would deploy any further.The stent did deploy further which confirms no damage to the internal components was present.Inspection of the remainder of the device, apart from the observed damage, revealed no other damage or irregularities.The most probable root cause is considered handling damage as the event occurred without direct patient contact.(b)(4).
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