(b)(4).The complaint rt210 breathing circuits were returned to fisher & paykel healthcare (b)(4)for inspection.The hospital informed us that the circuits had been thrown out for infection prevention reasons.Our investigation is based on the information provided by the hospital and our knowledge of the product.Based on the information provided, it appears likely that there was an open circuit in the heater wire, most likely as a result of poor connection between the heater wire and the heater wire pin.A lot check was not performed as lot information was not provided.Resistance tests and visual inspections are performed on all breathing circuits during production and those that fail are rejected.This suggests that the heater wire resistance became open circuit after the product was released for distribution.(b)(4).Discarded by hospital.
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