(b)(4).Product background: the opt970 optiflow + tracheostomy direct connection is a patient interface used for delivery of humidified respiratory gases directly into the patient's tracheostomy.The interface is held in place by a head strap and features a head strap clip which works in tandem with the tubing clip (attaches to the patient's clothing/bedding) to support the weight of the circuit and prevent the cannula being dislodged.Method: the opt970 optiflow + tracheostomy direct connection interface was not returned to fisher & paykel healthcare (f&p) for evaluation.Our investigation is based on the information and the photograph provided by the customer, and our knowledge of our product.Results: visual inspection of the provided photograph shows the tubing is damaged near the tracheostomy connector.Conclusion: we are unable to determine the cause of the reported event.However, based on our knowledge of the product it was likely caused by the cannula being subjected to excessive force.Manufacturing controls include inspections during production for visual defects including cracks, tears, inclusions, discoloration and stretching or deformation.Any product that fails the visual inspection is disposed of.The subject opt970 optiflow + tracheostomy direct connection interface would therefore have met the required specifications.Our user instructions that accompany the opt970 optiflow + tracheostomy direct connection interface show in pictorial format the correct placement and fitting of the cannula, including ensuring the lanyard is secured properly.The user instructions also warn: do not crush or stretch tube, to prevent loss of therapy.Failure to use the set-up described above can compromise performance and affect patient safety.
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