(b)(4).The complaint bc2755-20 neonatal oxygen therapy nasal cannula is manufactured by (b)(4), for fisher & paykel healthcare.Method: three complaint devices were returned to fisher & paykel healthcare in (b)(4) for investigation where they were visually inspected.Results: visual inspection revealed that for device #1 the detached left and right tubes without the nose piece were returned, for device #2 the right tube was detached from the nose piece and for device #3 no visual damage was observed.Conclusion: during manufacture by (b)(4), a bonding agent is applied to the outside surface of the tube and then inserted into the nasal interface.This is a manual process.As there was no damage to the surface of the tubing, it appears that either insufficient bonding agent was applied to the cannula during manufacturing or that the bonding material applied had not bonded properly, as a bond broken by force would have caused damage to the tube surface.The manufacturer of this device has been notified of this complaint and is conducting their own investigation.
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