(b)(4).Method: one complaint bubble cpap generator and probe were returned to fisher & paykel healthcare in (b)(6) for investigation.The complaint components were visually inspected and the dimensions of the probe and the lid of the bubble cpap generator were measured.Results: visual inspection revealed that there was no damage to the bubble cpap generator and probe.Measurement of the probe and lid revealed that the dimensions of the probe were within specification.The probe connection on the lid was out of specification, as the diameter was too large.Conclusion: it is likely that the probe moved from its set position due to the wider diameter of the probe connection on the lid.The cpap probe is intended to be adjustable, which leads to the possibility of inadvertent movement.This risk has been considered in our hazard analysis and deemed to be acceptable due to the provision of a physical stop in the bubble cpap probe, to prevent the pressure from exceeding 10cmh20, and the use of a pressure manifold with the breathing circuit, to reduce the risk of unsafe circuit pressure.The bubble cpap system is for use in hospital/clinical environments, such as the neonatal intensive care unit (nicu) and paediatric intensive care unit (picu).The user instructions that accompany the bubble cpap system kit illustrate in pictorial format the correct set-up and proper use of the bubble cpap generator.It also states the following: - "always use pressure monitoring to verify that the patient is receiving the prescribed cpap level." - "regularly observe the cpap generator for bubbling.If bubbling is not observed, check for and minimize the air leaks in the system and at the patient.If air leaks have been minimized, air flow may be increased to achieve continuous bubbling.".
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