US Patent 8251943 Vascular shunt

A novel shunt comprises: a first lumen having a first end and a second end, wherein the first lumen is composed of a polydimethylsiloxane material; a bulb-shaped portion positioned on each of the first end and the second end; a reinforcing spring extending along the first lumen from the first end and the second end; and a second lumen having a first end and a second end, wherein the first end is connected to a center portion of the first lumen and the second end is connected to a valve.