(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).The device is expected to be returned for evaluation.It has not yet been received.A follow up report will be submitted with all relevant information.The xience prox is currently not commercially available in the u.S.; however, it is similar to a device sold in the u.S.
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It was reported the procedure was to treat a lesion with moderate tortuosity and no calcification in the proximal right coronary artery (rca).Direct stenting was performed with a 4.0 x 15 mm xience prox.The xience prox attempted to advance through the guiding catheter however, resistance was noted.The xience prox was pushed into a 6 fr, jr4 guiding catheter and the proximal shaft separated in two pieces.The guiding catheter with the xience prox were removed together from the patient anatomy.A kink was noted in the guiding catheter as well.A new guiding catheter and new xience pro were used to complete the procedure with good results.There was no adverse patient effect and no clinically significant delay in the procedure.No additional information was provided.
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(b)(4).Evaluation summary: the device was returned for analysis.The reported shaft detachment was able to be confirmed.The reported difficulty to position was unable to be replicated in a testing environment due to the condition of the returned device.Based on a visual and dimensional inspection of the returned device, there is no indication of a product quality issue with respect to manufacture, design or labeling.Based on the information provided, the reported difficulties appear to be related to circumstances of the procedure.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 did not indicate a lot specific quality issue.Based on the information reviewed, there is no evidence to indicate the presence a potential quality issue with respect to manufacture, design or labeling.It should be noted that the xience pro x everolimus eluting coronary stent system instructions for use (ifu) states: if unusual resistance is felt before the stent exits the guiding catheter, do not force passage.Resistance may indicate a problem and the use of excessive force may result in stent damage or dislodgement.Maintain guide wire placement across the lesion and remove the delivery system and guiding catheter as a single unit.
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