It was reported that the physician was attempting to use a hawkone ls to treat a moderately calcified lesion with 70% stenosis in the mid right superficial femoral artery(sfa).Artery diameter and lesion length were reported as 7mm and 80mm, respectively.Physician used a non-medtronic 7fr sheath and a 0.014 spider filter.The ifu was followed and the device was prepped without issue.It was reported that the thumb switch malfunctioned with spring like protrusion seen in front of thumb switch.The physician made 2 passes; device was cleaned and reinserted.Upon attempting to turn device on to continue atherectomy, the thumb switch wouldn¿t move and an object was protruding in front of thumb switch at the base was seen.The catheter did not experience difficulty locking into or releasing from the cutter driver.The thumb-switch was held forward but it is unknown if the blade returned fully to the housing for removal from the patient.The procedure was completed using a new hawkone ls.No patient injury was reported.
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