Medical devices for treatment of strokes and cerebrovascular disease, namely, devices for removal of thromboembolic material from arteries; catheters for stroke treatment and the detection, diagnosis, and treatment of strokes; intracranial access system guide sheath in the nature of catheters for placing or delivering catheters or other medical devices; medical devices, namely, aspiration pumps for treatment of vascular disease and associated luer connectors, fittings and adapters; catheters; guidewires; intravascular clips; medical stents; stent delivery systems; clot retrieval systems comprised of catheters, stents and stent retrievers for treating strokes; stent retrievers, namely, devices for mechanical thrombectomy and embolectomy; medical devices, namely, retrievers for treating strokes and to retrieve clots and foreign bodies; medical devices, namely, intravascular implants comprised of artificial materials