Medical devices, namely, catheters for removal of occlusions from vessels, bronchial pathways; Medical devices, namely, cannulas and catheters for removing clot, thrombus, and other undesirable material; medical devices, namely, catheters used for removal of a thrombus; medical devices, namely, catheters for the therapeutic treatment of pulmonary embolism and deep vein thrombosis; Medical devices, namely, retrievers for use in radiology, neuroradiology, cardiology, and surgery, for treating pulmonary embolism, peripheral arterial disease, and surgical devices in the nature of retrievers for performing thrombectomy and retrieval of emboli, clots and foreign bodies; surgical devices, namely, thrombectomy devices and structural parts therefor; catheters