Catheters and parts and fittings therefor; Medical devices for treatment of vascular disease and pulmonary embolisms; medical devices for neurovascular access, stroke revascularization, neuro embolization, and neurosurgical evacuation; medical devices for treatment of vascular abnormalities, namely, devices for endovascular occlusion of neurovascular and peripheral vascular structures; medical devices for interventional and treatment procedures for thrombectomy; medical devices for treatment of vascular disease, namely, microcatheters, guiding catheters and sheaths, removal rings, separators, catheters, embolization coils, aspiration pumps, pump tubing and pump canisters; medical devices for removal of thrombus material from vessels