Section a was left blank because there was no patient involvement.The involved sample is not available for evaluation.Therefore, the investigation was based upon evaluation of user facility information, retained samples, and quality records.Visual inspection of retained samples did not reveal any defects or abnormalities.Function testing on the reserve samples confirmed that performance specifications were met.Simulation testing for activation of the safety device was performed using three different techniques: (1) according to the hand technique in the ifu it states, grasp the wing with your thumb on top and your index finger under the wing, activation was successful; (2) activation of the safety device with the index finger on the location of 0.5cm higher than the wing was also successful; and (3) activation of the safety device with the index finger location of 1.0cm higher than the wing was unsuccessful.A review of the device history record confirmed that there were no production related problems for this lot number.A review of the complaint files confirmed that this lot number has not been reported previously.There is no evidence that this event was related to a device defect or malfunction.Although the cause for the reported event cannot be definitively determined based on the available information from the user facility and simulation testing the reported issue is most consistent with grasping the wing with the index finger above the wing while activating.In doing this the index finger may be obstructed by the safety shield during activation and may cause the activation failure of the safety device.The device labeling does address the potential for such an occurrence in the instructions-for-use with statements such as the following: "flip the safety shield forward toward needle.Grasp the wing with your thumb on top of the shield and your index finger under the wing.Completely remove the needle from the puncture site and apply digital pressure to the site using a sterile gauze pad." all available information has been placed on file in quality assurance at the manufacturing facility for appropriate tracking, trending, and follow-up.(b)(4).Device not returned.
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