It was reported that the procedure was to treat a mildly calcified, mildly tortuous lesion in the first obtuse marginal (1st om) artery.A 2.5x20mm nc trek balloon dilatation catheter (bdc) was advanced to the target lesion and inflated above the rated burst pressure (rbp), to 28 atmospheres (atm) when the balloon ruptured.The bdc was simply removed, and another nc trek was used to successfully complete the procedure.There was no adverse patient effect and no clinically significant delay in the procedure.No additional information was provided.
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Visual inspection was performed on the returned device.The reported balloon rupture was confirmed.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 similar incidents and/or complaints from this lot.It was reported that the nc trek balloon dilatation catheter (bdc) was inflated above the rated burst pressure (rbp), to 28 atmospheres (atm) when the balloon ruptured.It should be noted that the coronary dilatation catheters (cdc), nc trek rx, global, instruction for use (ifu) states: balloon pressure should not exceed the rated burst pressure (rbp).The rbp for the nc trek rx device is 18 atm.In this case, it is likely the ifu deviation resulted in the reported balloon rupture.The investigation determined the reported balloon rupture appears to be related to user error/operational context.There is no indication of a product quality issue with respects to the design, manufacture, or labeling of the device.
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