The actual device was not returned for evaluation.A retention sample of the involved product code/lot# combination was evaluated as follows.The related test such as visual inspection, the angle of the safety shield, activation of safety shield and pulling force of needle to the retained samples show no abnormities.The ifu reference states: step 1, place the safety shield over the needle after use.Step 2, press the wings together with the thumb and middle finger and press the safety shield with index finger then withdraw needle from the vein.Step 3, press the safety shield together with thumb and index finger until an audible click is heard.Step 4, discard the needle after activation.There is no evidence that this event was related to a device defect or malfunction.With no return of the actual device the exact cause of the reported event cannot be definitively determined.(b)(4).
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