| abstract |
A balloon catheter ( 10 ) having a shaft ( 16 ), a balloon ( 14 ), and an external delivery tube ( 12 ) is disclosed. Methods of using the balloon catheter having an external delivery tube are also disclosed. In one example, the balloon catheter is an agent delivery catheter including a catheter body extending between catheter proximal and distal portions. An inflatable balloon assembly ( 100 ) is coupled with the catheter body. An agent delivery assembly ( 102 ) is coupled with the catheter body and the inflatable balloon assembly. The agent delivery assembly includes a delivery lumen ( 32 ) extending through the catheter body, and an agent delivery tube extending along an exterior balloon surface ( 64 ). The agent delivery tube includes at least one delivery orifice ( 70 ) directed outside of the exterior balloon surface. The agent delivery assembly is isolated from fluid communication with the inflatable balloon assembly. |