Methods and devices for maintaining cardiopulmonary bypass and arresting a patient's heart
AssigneeHeartport, Inc.
InventorsCraig P. Roberts, John M. Toomasian, Sylvia W. Fan
Life of this patent
Estimating the term…
Abstract
An endovascular system for arresting a patient's heart and maintaining the patient on cardiopulmonary bypass. A venous cannula, venting catheter and an aortic occlusion device are all coupled together so that the blood drawn into each of these catheters may be fed to a pump. A manifold has valves which control flows through the venous cannula, venting catheter and aortic occlusion device. A blood storage element is also provided so that the amount of blood in the perfusion circuit may be varied if necessary. The blood storage element is preferably positioned in parallel with the pump so that the pump may be used to add and remove blood to and from the blood storage element.
Claims8
A method of arresting a patient's heart and withdrawing blood from the patient for pumping to a cardiopulmonary bypass system, comprising the steps of:
- providing an aortic occlusion device, a venous cannula, and a pump, the aortic occlusion device having an occluding member, a first branch and a second branch;
- coupling the first branch to a source of cardioplegic fluid;
- coupling the second branch to the pump so that blood flowing through the second branch passes through the pump;
- coupling the venous cannula to the pump so that blood flowing through the venous cannula passes through the pump;
- positioning the occluding member in the ascending aorta of a patient;
- delivering cardioplegic fluid from the source of cardioplegic fluid and through the first branch thereby arresting the patient's heart;
- expanding the occluding member to occlude the patient's ascending aorta;
- inserting the venous cannula into a vein of the patient;
- and
- withdrawing blood from the patient through the venous cannula using the pump.
Dependencies are inferred from the claim text.