ENDOLUMENAL AORTIC ISOLATION ASSEMBLY AND METHOD

摘要

A medical device assembly is adapted to isolate the heart from systemic circulation while perfusing oxygenated blood to the systemic arterial circulation during a minimally invasive bypass procedure. The assembly includes a catheter with an external shunt valve (3) which forms an anchor to secure the distal end portion within the aortic arch, and forms a funnel which shunts ante-grade blood flow from the aortic root, into a distal flow port (4), through a flow lumen in the catheter (1), out an intermediate flow port (5) along the catheter (1) proximally of the anchor, and into the systemic arterial circulation. A distal internal valve (6) within the lumen between the distal, the intermediate flow ports selectively occludes the shunted ante-grade aortic blood flow between the distal flow port (4), the intermediate flow port (5), thereby isolating the left ventricle from the systemic arterial circulation wherein oxygenated blood may then flow.