The device was not returned for analysis.A review of the lot history record revealed no manufacturing nonconformities issued to the reported lot that would have contributed to the reported event.Additionally, a review of the complaint history identified no other complaints from the lot.All available information was investigated, and a cause for the reported knot (material deformation) and product quality problem associated with the plastic cover (red polyimide tubing) being stuck cannot be determined.There is no indication of product issue with respect to manufacture, design or labeling.Na.
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