Medical devices for treating vascular diseases and conditions, including, medical pumps in the nature of pumps for circulating blood, control units for medical pumps in the nature of controllers for providing healthcare workers with patient information and controlling medical pumps for circulating blood, guidewires, dilators, introducer sheaths, medical introducer kits for positioning a pump in the circulatory system of a patient, access sheaths used to guide the insertion of other medical equipment for diagnostic or vascular interventions, insertion tools for placement of medical devices in the circulatory system, and catheters for placement of medical pumps in the circulatory system