Patent ID: 9636208
Date: 2017-05-02
CPC Classifications: A61F

Claim:
1. A vascular bypass prosthesis for treatment of obstructive vascular disease having a forked tube, comprising: an inflow tube with an inflow end; a primary distal outflow branch including a primary distal outflow end; and a secondary proximal outflow branch including a secondary proximal outflow end; wherein the primary distal outflow branch and the secondary proximal outflow branch divide into different directions creating a bifurcation, and in vicinity of the bifurcation, the primary distal outflow branch and the secondary proximal outflow branch have different cross-sectional areas, wherein the secondary proximal outflow branch is more curved than the primary distal outflow branch, and an angle of outflow from the inflow tube to the secondary proximal outflow branch, at the bifurcation, is in the range of 30 to 90 degrees measured between a center of axis of the inflow tube and a center of axis of the secondary proximal outflow branch, and wherein the secondary proximal outflow branch in the vicinity of the bifurcation has a smaller cross-sectional area than the primary distal outflow branch, and the secondary proximal outflow branch has a gradual increasing cross-sectional area from the bifurcation to the secondary proximal outflow end.