Though no medical/surgical intervention was required to preclude a serious injury in this event, there have been previously reported events involving a similar device that resulted in the need for medical/surgical intervention to preclude permanent damage to a body structure or permanent impairment of a body function.Therefore, this event meets the criteria for reportability per 21 cfr part 803.As received, the attachment could support the reported complaint however, a root cause could not be determined.Production and quality testing of the attachment was not performed as the device was not in working condition.Attachment was sent to (b)(4) for further evaluation.Results from (b)(4) stated: the attachment was in good condition and well lubricated.The investigation shows that the cap was assembled correctly.The inside of the head cap shows no significant wear or tear.A manufacturing error could not be detected as well.
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