During the priming process prior to an extracorporeal photopheresis (ecp) treatment, the drive tube was severed at the top drive tube clip, appearing to be a ¿clean cut¿.The lower portion of the drive tube appeared frayed, presumably because of the contact it made while spinning freely within the centrifuge chamber after the sever occurred.The metal ring used to seat the drive tube into the clip was noted at the bottom of the force of the severed drive tube while spinning.The patient was present, but had been hooked up to the machine.A similar incident occurred with the same lot number (g375) procedural kit within 2 weeks of this incident (see separate form 3500) where the centrifuge bowl exploded after treatment had begun.
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