It was reported that the procedure was to treat a lesion in the pulmonary artery.After the 4.00x30 mm trek balloon dilatation catheter (bdc) was used for dilation about 10 times to 6-8 atmospheres, the balloon failed to deflate.Negative pressure was held for 5-6 seconds.The bdc was removed together with the 6fr introducer as the balloon remained inflated at 50%.Reportedly, the device was not prepped (air aspiration) prior to use.The patient had another puncture to place another introducer and to complete the procedure.No additional information was provided.
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The device was returned for analysis.The reported material separation was able to be confirmed.The reported deflation problem and the reported difficult to remove were unable to be replicated in a testing environment due to the condition of the returned device.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other incidents from this lot.Reportedly, the device was not prepped (air aspiration) prior to use.It should be noted that the trek rx coronary dilatation catheter instructions for use (ifu) states: caution: all air must be removed from the balloon and displaced with contrast prior to inserting into the body, otherwise, complications may occur.The deviation of the ifu does not appear to have cause/contributed to the reported difficulties.The investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely that after repeated successful inflations with no issues it is likely that interaction/manipulation of the device and/or an insufficient amount of time was not allowed to fully deflate the balloon resulting in the noted stretched inner and outer member; thus resulting in the reported deflation problem and the reported difficult to remove.Manipulation of the device and/or interaction with other devices/anatomy resulted in the noted device damages (balloon material was folded over itself, outer member material bunched), the reported material separation/ noted kinked/torn/separated inner member and outer member was confirmed by the account as due to removing the catheter from the introducer sheath.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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