Balt usa reference number: #(b)(4).An evaluation of the actual complaint sample could not be performed as the device was unavailable for return.Incident was reported via following an internal clinical audit being performed by a independent third-party while conducting review of the active clinical study database on 16nov2021.Reported information concluded patient harm had possible relation to device.Lack of device return prevented deeper evaluation of the device as a potential root cause.Review of prior testing and existing post market data has not established any known causal relationship between the device and thrombus formation.Reported information concluded patient harm had causal relation to the procedure.Ischemia (including thrombus/emboli/clot) is a known risk inherent to embolic coiling procedures, as evidenced in the optima coil risk management and instructions for use.The incident resulted in medical or surgical intervention to prevent life threatening illness.It was reported that medication was administered and the harm status was resolved later the same day.The lot number was not provided therefore; a review of the lot history records could not be performed.Based on the provided information, root cause is likely attributable to procedural complication but could not be definitively determined.
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