Device was implanted for one month and two weeks before the incident occurred.Engineer removed the extensions and lumen from the hub for closer inspection.A digital microscope was used to view lumen wall thickness inside of the hub.Engineers were looking for wall thinness as an indicator of improper manufacturing.Wall thickness was found uniform throughout the hub, and no cracks or tears could be identified.Therefore, root cause could not be attributed to the manufacturing processes.It is unknown what caused the incident to occur.The root cause cannot be determined.
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