The catheter (sn: (b)(4)) was returned to ekos on 7/5/2017 for evaluation.The catheter evaluation confirmed the ultrasound core was fractured and the fracture occurred at end of treatment zone next to shaft to treatment zone joint.Examination of the ultrasound core shows indications of a prior kink in the fracture region, and some bending on internal wires.A definitive root cause could not be identified.Ekosonic endovascular device instructions for use states: do not deform or kink the ultrasound core during delivery into the infusion catheter.If the ultrasound core is kinked at any time, do not attempt to use it, as kinking may lead to degraded performance or fracture during use.Review of the manufacturing records indicates that the product was manufactured according to specification following all applicable procedures and the finished device met all acceptance criteria prior to release.
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A 106cm/50cm ekosonic catheter (sn: (b)(4)) was used to treat a patient with peripheral arterial occlusion in early (b)(6) 2017, exact event date was not provided.After successfully placed infusion catheter (part of the ekosonic catheter) in the patient, the treating physician tried to place ultrasound core ( microsonic device) and the ultrasound core wire fractured inside the infusion catheter.The physician removed the catheter and placed another ekos device with no further issues.The patient was not harmed and lysed completely after new 50cm device was placed in position.
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