Patent ID: 7559948

Claim:
A fenestrated asymmetric intracardiac device for the completion of total cavopulmonary anastomosis through cardiac catheterization, the device comprising a bifurcated tubular conduit formed by a first lower section and a second upper section both centered on and extending alone a common warped axis having a radius of curvature between 35° and 45°, the first section being a tubular mesh covered at least in some parts by an impermeable polymer and having a lower end of substantially circular cross-sectional shape with a diameter between 16-20 mm, an upper end having a progressively flattened and a substantially oval cross-sectional shape, the upper end and lower end both being of substantially the same cross-sectional area along their full axial lengths, and a wall formed with at least one closable fenestration that connects an interior of the conduit with the exterior, the second upper section being a tubular mesh covered at least partially by an impermeable polymeric material and having a cross-sectional shape that is oval and tapers upward to a diameter of between 10-13 mm, the second section bifurcating upward into two branches one of which is longer than the other, the longer branch extending along the warped axis, the other branch being formed with a short laterally projecting extension of circular cross-sectional shape forming with the first lower portion a distorted “Y”, each branch having a mesh at least partially covered by an impermeable polymeric material and being formed unitarily with the second upper section, the conduit being between 60-75 mm long overall, the one branch being between 18-25 mm long, and the other branch being between 4-8 mm long, the short branch having a wall that intercepts between 50%-70% of blood flowing up through the tubular conduit from its lower end, the lower end being constructed for connection with a lower vena cava and a hepatic vena with the upper and lower sections of the tubular conduit configured to be lodged inside the right atrium, one branch being sized to be tightly lodged inside a left pulmonary artery and forming an obstruction with regard to a main pulmonary artery, the other branch being configured to be lodged at a base of a right pulmonary artery.