Patent ID: 6676650
Filing Date: 2004-01-13
Classification: A61M

Abstract:
A system for treating a patient comprising:a perfusion cannula comprising: a hollow tube adapted for insertion into a vessel of the patient and adapted for fluid flow, said tube having a proximal end, said tube having a primary hole disposed in proximity to the proximal end for release of fluid from the tube and at least a first perfusion hole disposed in the tube wall for release of fluid from the tube, said tube having an outer diameter and an inner diameter; and a widener extending from the outer surface of the tube and effectively extending the outer diameter of the tube, said inner diameter of the tube smooth and continuous and having a circular cross-section throughout, said widener in spaced relation from the proximal end and in proximity to and in operational relation with the first perfusion hole and adopted for fluid to be able to escape from the first perfusion hole without obstruction by the vessel wall when the tube is in the vessel but allowing the vessel wall to close upon the tube between the first perfusion hole and the primary hole wherein fluid escaping from the first perfusion hole contacts the vessel wall about the tube and is stopped by the vessel wall from moving past the vessel wall and past the primary hole, said tube having a rigid bend in proximity to the widener; and a pump mechanism adapted for pumping fluid into the cannula and out of the first perfusion hole with enough pressure to travel in the vessel in a second direction through the leg of the patient, and out the primary hole with enough pressure to travel in the vessel in a first direction through the body of the patient when the cannula is inserted in the vessel, said pump mechanism connected to the cannula.