The reported event was confirmed, however, the cause is unknown.Evaluation of the device found an irregular balloon burst with no missing pieces.The sample was evaluated under a microscope and there were no conditions found that could be associated with the reported event.A potential root cause for this failure mode could be user related (example: contact with sharp object)/ exposure to petrolatum based products/ mechanical failure/ operator error.The device history record was reviewed and found nothing that could have caused or contributed to the reported event.The instructions for use were found adequate and state the following: "1.Method for use: (1) do not inflate the balloon in the urethra.(the urethra may be injured) (2) do not pull the catheter hard.(the bladder/urethra maybe injured) 2.Applicable patients (1) patients with delirium who might pull out catheter (when patient tugs at catheter unconsciously, the bladder and urethra may be damaged).Contraindications 1.Method for use: (1) do not reuse.(2) do not resterilize.(3) be careful that the catheter is not exposed to ointments, contrast medium or oil-based lubricants (including vegetable oils such as olive oil, mineral oils such as white petrolatum and animal oils).[they may damage the device and may burst balloon.] (4) do not hold the device with forceps, etc.Avoid contact with any blades or sharp-edged instruments.[catheter damage may cause balloon rupture and accidental balloon removal or failure to deflate or remove the balloon.] 2.Applicable patients (1) do not use on patients who are or have been allergic to natural rubber latex.".
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