Celermajer, David,Sutherland, Michael J.,McNamara, Edward
申请号：
AU2011210741
公开号：
AU2011210741A1
申请日:
2011.01.28
申请国别(地区):
AU
年份:
2012
代理人:
摘要：
Devices and method are disclosed for reducing pressure in a patients vena cava and in the right atrium of a patients heart. A valve is implanted in the inferior vena cava (IFC) between the patients renal veins and hepatic veins. When pressure in a patients IFC reaches high levels, i.e., the pressure differential across the valve reaches high levels, the valve automatically closes or begins to close. The closing is caused by the pressure of the patients blood moving one or more flaps in the valve to a closed or near-closed position. This prevents excessive pressure in the upper or superior vena cava and the right atrium of the patients heart. The device also includes a pressure relief feature that opens and allows retrograde flow of blood if the pressure differential exceeds a yet higher pressure.
