ENDOVASCULAR GRAFT

摘要

An graft which is con- figured to conform to the morphology of the vessel to be treated and which is made from an inflatable structure having a proxi- mal end with a proximal inflatable cuff and a distal end with a distal inflatable cuff. At least one elongated inflatable channel is disposed between and in fluid commu- nication with fluid tight chambers of the inflatable cuffs which may contain rupture discs therebetween which can be config- ured to rupture at different pressures. A thin flexible barrier disposed between the inflatable cuffs and the elongated inflat- able channel of the frame so as to form a tubular structure defining a longitudinal channel to confine a flow of blood or other fluid therethrough. The graft may also have an expansion member attached to the proximal end of the graft which is prefer- ably made of linked expandable rings of pseudoelastic shape memory alloy which is self-expanding and prevents axial dis- placement of the graft once it is deployed.