Medical devices for use in treating or diagnosing neurovascular and endovascular conditions; Medical apparatus and instruments for use in endovascular and embolization procedures; Medical devices and apparatus, namely, medical guidewires and parts and fittings therefor; Medical and surgical catheters; Catheters for use in endovascular and embolization procedures; Hepatic shunt occluders; Vascular access ports for medical use; Drainage appliances for surgical procedures