It was reported to covidien on (b)(6) 2014 that a customer had an issue with an insulin syringe.The customer reports an issue with a monoject ultra-comfort, 28 gauge, 1/2 ml.The customer reports every time the product is used, there is trouble with getting air bubbles.The customer states sometimes it is not just an air bubble, but a vacuum lock.The customer reports this is not always visually detectable, but once he starts injecting, he can feel the difference.This creates not just the danger of air, but danger of misdosing.The customer states he can never be certain how much insulin, if any, was received with the vacuum.The customer states if he guesses incorrectly, there is a danger of either very high blood sugars or insulin reactions, which the blood sugars or insulin reactions, which the customer reports he has suffered as a result of this.
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