On (b)(6) 2022, the nurse routinely tested the chest compression system, and when it was operating in automatic compression mode, a state of abnormal sound appeared from time to time.It was immediately reported to the engineer of the device department for maintenance, which did not cause any adverse consequences.This device was used for many years and the expiration date could not be traced back.Situation of combined medication/device: none (b)(4).This report reflects information received by fda in the form of a notification per 803.22 (b)(2).
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