Physician was attempting to treat a lesion that exhibited little calcification in the sfa using in.Pact pacific paclitaxel eluting balloon catheter, it was reported that balloon twist occurred during inflation.Another balloon was used to complete the procedure.There was no injury to patient.¿please note that this device (in.Pact pacific) is not marketed in the united states; however, it is similar to the united states marketed device (in.Pact admiral).This event is being reported only as a malfunction because of the similar device requirement in 803 which is limited to malfunctions.¿.
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Device evaluation: visual and tactile inspections were carried out on the returned device.The balloon was unfolded and showed a twist in the middle.It was impossible to flush the guide wire lumen and load the 0,018¿¿ guide wire loaded due to the presence of dried blood.During the analysis, negative pressure was applied with a manometric syringe on the balloon: the purging test passed, since no bubbles emerged in the water column.Afterwards, the balloon was inflated sequentially at: - 1 bar: the balloon was showing wrinkles in correspondence of the twist; - 2 bar: wrinkles still more visible - 7 bar: no wrinkles detected - 14 bar: no wrinkles detected.No twist was present on the guide wire lumen.The root cause is related to the direction of the folding pleats which appear not to be folded parallel to the shaft of the device.Once inside the artery, the folding pleats most likely encounter resistance related to a tight lesion, resulting an incomplete balloon expansion.The root cause is related to the direction of the folding pleats which appear not to be folded parallel to the shaft of the device.Once inside the artery, the folding pleats most likely encounter resistance related to a tight lesion, resulting an incomplete balloon expansion.
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