Abstract: A bio-compatible graft for use in a patient. The graft contains a plurality of expanded regions which provide greater access to the graft and additional area within which to cannulate the patient with a needle, as for dialysis treatment. The expanded regions will provide greater graft lifetime and increase the target area available for cannulation. Additionally shields are provided at a posterior aspect of each of the regions. The shields serve as a indicator to an operator that further cannulation of the needle into the patient will cause the needle to protrude through the posterior wall of the graft. This indication is had by the excess force necessary to push the needle into the shield once the shield is contacted by the needle tip.

Abstract: A displaceable ballooning catheter for displacement off an occluding membrane within a patient's body. The device contains the normal inflow and outflow ports of typical catheters but in addition contains a fluid filled balloon that upon inflation will move away from a blood vessel wall thereby ensuring adequate flow into the catheter during hemodialysis. The balloon is adaptable to other methods of catheterization such as peritoneal dialysis and pressure monitoring because the balloon is capable of moving the catheter tip enough to situate the catheter in its optimum location for the procedure intended.