As a result of this malfunction, the potential for surgical intervention exists to preclude permanent damage to a body structure or permanent impairment of a body function as evidenced by previous reported events with similar files.This event, therefore, is reportable per 21cfr part 803.Involved products that broke during use were not returned and cannot be analyzed.Moreover, no unused file is available for evaluation.Nothing unusual to report was found during dhrs review.Root causes are not identified.We will track this kind of event and monitor the trend.
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