Device evaluated by mfr: the device was returned for evaluation.The advancer, handshake connections, sheath, coil, burr and annulus were microscopically examined.Inspection of the device revealed that the sheath and coil were detached.There was blood present inside the distal portion of the detached sheath.The sheath was detached 49cm and the coil was detached 44cm distal of the strain relief.The separated ends of coil and sheath were microscopically examined, and it was found that they were a clean break, which is consistent to damage that is similar to the coil being cut.The coil was also microscopically inspected and found to be stretched 1cm proximal of the separation and.25cm distal of the separation, indicating there was force applied to the coil.There were numerous kinks in the sheath and the coil was kinked 3cm proximal of the burr.Functional testing was performed by rotating the drive shaft (handshake connection), and the device was able to rotate with no issues.This confirms there was no issues with the advancer and that the blood in the distal portion of the sheath was due to the device being in the patient when separated.With a test device, it was put in a toughy and pulled with force to try and break the sheath and coil.The sheath and coil did not break but the sheath necked down and the coil stretched, not matching the returned device.The coil and sheath of a test device were than cut with a wire cutter and surgical scissors.The separated ends from the wire cutter did not match the returned complaint device; however, the separated ends cuts with the surgical scissors were comparable to the complaint device.Therefore, with being able to recreate the clean separated ends of the coil and sheath and after all the testing and review of the complaint device, it was determined that the received sheath and coil were cut.Inspection of the remainder of the device presented no other damage or irregularities.
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