Patent ID: 8900177
Filing Date: 2014-12-02
Classification: A61M

Abstract:
1. A self adjusting graft comprising: an inflow end for accepting a blood flow from a circulatory system; an outflow end for returning the blood flow at an outflow pressure to the circulatory system; a conduit, having a fixed length, within the self adjusting graft configured to provide a fluid pathway for the blood flow between the inflow end and the outflow end; a sealed internal reservoir between the inflow end and the outflow end and having a reservoir pressure, the internal reservoir formed by an outer wall of the self adjusting graft and the conduit; and a collapsible portion of the conduit, the collapsible portion configured to provide a stenosis for the blood flow, wherein the outflow pressure increasing, caused by increasing blood pressure at the outflow end, relative to the reservoir pressure increases pressure in the internal reservoir which provides pressure on the collapsible portion to collapse the collapsible portion, and the outflow pressure decreasing relative to the reservoir pressure un-collapses the collapsible portion, wherein the collapsing the collapsible portion occurs without adding additional material to the reservoir and the graft is configured to be completely contained within a patient's body.