Patent ID: 8419714

Claim:
An apparatus comprising: a flexible tube having a length dimension for positioning between a syringe tube and an input adaptor of a catheter, the flexible tube consisting essentially of: a first end having a first connector adapted to attach and seal the flexible tube to an output of the syringe tube; a second end having a second connector to couple the flexible tube to the input adapter of the catheter; an inner material defining a lumen having an inner diameter sufficient to communicate fluid between the syringe tube and the input adapter to cause a volume of fluid to inflate a balloon attached to the catheter to occlude a blood vessel at a region of interest; an outer material surrounding and extruded over the inner material; wherein the inner material has a modulus of elasticity greater than a modulus of elasticity of the outer material, and wherein the inner material thickness and the outer material thickness are chosen depending upon the modulus of the inner material and the modulus of the outer material to provide the flexible tube with a selected flexibility and low compliance, wherein the inner material and the outer material are miscible and are co-extruded, and wherein the inner diameter of the inner material is less than or equal to 0.035 inches, and the outer diameter of the outer material is greater than or equal to 0.13 inches.