(b)(4).The actual device involved in the reported incident was not returned for evaluation.Incidents of cracked/leaking valves can be caused by many factors, including but not limited to an excess torque force in combination with over-tightening the connection; if the product is subjected to aggressive solvents, excessive mechanical stresses, or other various unforeseen circumstances during the clinical application.However without the actual sample or lot number, a thorough sample analysis or batch record review could not be performed and no specific conclusions can be drawn.If additional pertinent information becomes available a follow-up report will be filed.
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