The complaint device was returned.Device evaluation identified that the ultrasound transducer electrical check and the safety, maintenance and calibration testing failed confirming the reported event.The device had loose crystals.The piezoelectric crystals were tightened.The parameter tests were performed and all passed.A definitive root cause for the low sounding crystals could not be determined.This type of event will continue to be monitored.Subsequent to the initial mdr, additional review of the hhe-2019-01 and hhe-2019-02 assessments have been conducted.The health care professional has concluded all fetal transducer products in relation to the resulted recall for both hhe's provided, do not qualify as reportable incidences; therefore, this malfunction should not have been submitted.
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