The device was received and inspected.The outer layer of the graft section that had been cut off no longer had the helix attached to it.The helix had some fraying of the ptfe attached to it.The base layer was not affected.The other portion that was not damaged had been cut and showed no signs of fraying.In an attempt to duplicate the fraying the helix coil on the unaffected section of the returned graft was manipulated by hand in an attempt to have the helix coil material separate from the underlying graft.This was unsuccessful as the monofilament helix coil was firmly attached to the underlying base material of the graft.A set of forceps were obtained and the monofilament helix coil was grasped and pulled rapidly.Upon pulling the helix separated from the underlying graft along with some of the underlying graft material described as fraying.No portion of the helix coils unraveled from the underlying graft material and the base material of the graft was intact.The instructions for use state "while the rings are added to the advanta vxt to improve kink, compression and torque resistance, a physician may choose to remove portions of it for surgical/technical reasons".The steps to do so are as follows: 1.Hold the graft flat (horizontal).2.Take the very distal portion of the ptfe ring with a pair of forceps and slowly pull off the ring at a 45 degree angle, being mindful not to catch the outer soft wrap.3.If the external support rings are pulled too quickly, it is possible for a small portion of the vxt outer wrap to be removed.Should the outer wrap fray, the physician is still left with the base layer, which will be sufficient to complete the procedure.Based on the review of the device history records and product complaint details atrium can find no fault with the device in question.
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