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It was reported that the procedure was to treat a mid right coronary artery.The 3.5x30mm trek balloon dilatation catheter was used at the beginning of the case inflated to 14 atmospheres for three times.Later it was re-inserted and inflated; however, the balloon would not deflate after inflation.Numerous attempting to deflate the balloon were attempted including exchanging the inflation device; however, failed.The bdc was moved back to mouth of the guiding catheter disengaging it from the rca and intentionally over-inflating the balloon past the rated burst pressure until it ruptured in the aorta.The balloon, guide wire and guide catheter were all removed through the sheath.A procedure was completed with xience stent and nc trek neo balloons.There was no adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.
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Subsequently, after the report was filed it was noted that there was resistance felt when attempting to remove the ruptured trek balloon with the guiding catheter; therefore, everything was removed together.The outer member was noted to be separated 9mm distal to the guidewire exit notch exposing 3cm of the wire.No additional information was provided.
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Visual inspection was performed on the returned device.The reported separation was confirmed.The reported failure to deflate and difficulty removing the device could not be replicated in a testing environment due to the condition of the returned device.Production record and corrective and preventative actions (capa) reviews were performed and revealed no indication of a product quality issue.Additionally, a query of the complaint handling database for the reported lot revealed there is no indication of a lot specific issue.Based on the reported information and the observations from the returned analysis, a definitive cause for the reported failure to deflate could not be determined; however, the reported difficulty removing the device and separation appear to be related to circumstances of the procedure.Possible factors that may contribute to failure to deflate include, but are not limited to, deflation technique, tortuous anatomy, contamination in the inflation lumen, contrast concentration or damage to the guide wire and/or inflation lumen.In this case, a conclusive cause for the reported failure to deflate could not be determined; however, it was reported that the device was successfully used initially in the procedure without any issues, which suggests a product quality issue did not contribute to the reported difficulties.Additionally, it is likely that the reported difficulty removing the device resulted from the balloon not being able to deflate and upon further manipulation during attempts to remove the device against resistance, the device ultimately separated.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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