Investigation summary: lot analysis review of the dhr revealed all required challenges samples and testing was performed per specification in accordance with the setup and in-process sampling plans.Setup and in process samples for needle retraction by button activation were performed on various stages throughout the process, all the inspections passed per specifications.Setup and in process samples for needle penetration difficult by cannula tip quality/ and needle tip penetration/drag test were performed on various stages throughout the process, all the inspections passed per specifications.Visual analysis: observations and testing: received one unused iag/bc 22ga unit in sealed package from the lot number 7317810.Penetration and drag test was performed: during the penetration and drag test the catheter did not accordion, bend, kink, split or wrinkle during insertion.Specification is 32 grams max for needle tip, 35 grams max for catheter tip and 10 grams average for catheter drag.The units were acceptable per specification.Visual/microscopic examination: the bevel area had the proper bevel cut and the secondary bevel was present.The needle was not bent, pinched or gripper damage to the needles.There was no mechanical/physical damage to the spring, needle hub, grip, or evidence of glue on the button or hub.The needle was not bent, pinched or damaged.Lie distance: within the acceptable range of.001 - 0.023 inches.Cannula tip quality: rated at a, acceptable.No bends, cuts, holes, kinks, splits, kinks, wrinkles or the characteristic v shape of a spear thru was observed in the tubing of the catheter.Catheter tip grading: graded a 3, acceptable.Tip adhesion: holding the catheter hub, manually rotated the clear barrels 360 degrees, observed no candy caning and there was no stickiness felt.Functional test (needle retraction): the button was depressed, and the needle retraction was successful, not fast nor slow; meeting no resistance.Investigation conclusion: the defects of needle penetration difficult/painful and needle stick injury, as stated as the reported codes, were not confirmed.The returned units did not display any adverse characteristics that would contribute to the defects the customer experienced.The defects described in the incident report could not be confirmed or replicated with the returned unit.The actual unit described in the incident report was not returned for evaluation.Root cause: relationship of device to the reported incident: indeterminate.There was no definite physical or mechanical evidence that confirmed and supported manufacturing process related issues for the defect observed in this incident.
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