(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.(b)(4).The device was not returned for analysis.It is likely that the balloon rupture, difficulty removing and separation were the result of inflating the balloon over the rbp.The instructions for use, states: inflation in excess of the rated burst pressure may cause the balloon to rupture.The lot history record (lhr) for this product could not be reviewed and a similar incident query could not be performed because the product was not returned for evaluation and the lot number was not reported.The investigation determined that the reported difficulties appear to be user related.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.The additional armada devices are filed under separate medwatch reports.
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It was reported that procedure was to treat a right arm fistula with 80% stenosis.A 6mm x 20mm armada 35 balloon dilatation catheter (bdc) was advanced to the target lesion.During the first inflation, to 24 atmospheres (atm) the balloon ruptured (rbp).The armada bdc was replaced with another same size armada bdc and during the first inflation to 24 atm the balloon ruptured.A 7mm x 40mm armada bdc was advanced to the target lesion.During the third inflation, to 24 atm the balloon ruptured.The 7mm x 40mm armada bdc was difficult to remove from the sheath.The devices were removed together as a single unit.Upon removal of the device, it was noted that a portion of the balloon along with part of the inner member with the balloon marker remained in the patient anatomy.An attempt to snare the separated portion of the balloon was unsuccessful, a cut down was performed to remove the separated balloon.No additional treatment was required; the procedure was complete at this time.The patient is stable.There was no adverse patient sequela and no clinically significant delay in the procedure.No additional information was provided.
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