(b)(4).As the patient had covid-19, the healthcare facility has discarded the subject opt944 optiflow + adult nasal cannula and so it cannot be returned to fisher & paykel healthcare (f&p) for evaluation.F&p is currently in the process of retrieving further information, including the sequence of events and the medical cause of death.We will provide a follow up report upon completion of our investigation.Product background: the opt944 optiflow + adult nasal cannula is a nasal cannula patient interface for delivery of humidified respiratory gases.The cannula consists of a lightweight delivery tube connected to a rigid plastic base and soft nasal prongs (nasal interface).This allows the device to be light weight and durable.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.
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(b)(4).Product background: the opt944 optiflow + adult nasal cannula is a nasal cannula patient interface for delivery of humidified respiratory gases.The cannula consists of a lightweight delivery tube connected to a rigid plastic base and soft nasal prongs (nasal interface).This allows the device to be light weight and durable.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: as the patient had covid-19, the healthcare facility discarded the subject opt944 optiflow + adult nasal cannula and so was not returned to fisher & paykel healthcare (f&p) for evaluation.Several attempts to request further information from the healthcare facility were also made, however no response was provided by the healthcare facility.Our investigation is based on the initial information provided by the customer, and our knowledge of the product.Results: the healthcare facility reported that the tubing of the opt944 optiflow + adult nasal cannula was found under a patient's shoulder while they were lying on their side.When the patient was turned over by the medical staff the tubing was found damaged.The healthcare facility also reported that the tubing clip was not used.Conclusion: our investigation was unable to determine the cause of the observed damage to the subject opt944 optiflow + adult nasal cannula.Based on our knowledge of the product, the reported damage is likely to have been caused by the tubing being subjected to excessive force when laid on by the patient and during movement of the patient by the medical staff.Manufacturing controls include inspections during production for visual defects to the optiflow + tubing and the swivel, including cracks, tears, moulding defects, contamination, inclusions, discoloration and stretching or deformation.The optiflow + tubing is also inspected for any assembly defects, including confirmation the swivel and 3-way connector are connected with the correct engagement.Any product that fails the visual inspection is disposed of.The subject opt944 optiflow + adult nasal cannula would have met the required specifications.The user instructions which accompany the opt944 optiflow + adult nasal cannula show in pictorial format the correct placement and fitting of the cannula, including ensuring the head strap clip and the tubing clip are appropriately attached.The user instructions also warn: "ensure head strap clip is attached, to prevent cannula from being pulled out of the nares." "cannula can become unattached if not used with the head strap clip." "attach tubing clip to clothing/bedding to prevent cannula from pulling off face." "appropriate patient monitoring must be used at all times.Failure to monitor the patient may result in loss of therapy, serious injury or death." "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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