Patent ID: 8043257
Filing Date: 2011-10-25
Classification: A61M

Abstract:
1. An agent delivery catheter configured for delivering an agent to an injection site in a wall of a patient's body lumen, comprising: a) an elongated shaft having a proximal end, a distal end, an inflation lumen located within the elongated shaft and extending distally from the proximal end of the shaft to a distal end located proximal to the distal end of the catheter shaft, a needle-through lumen slidably containing a needle therein, and at least one needle-through port such that the needle has a retracted and an extended configuration; b) a proximal balloon on a distal shaft section with an inflatable interior located proximal to the needle-through port, sealingly secured to the shaft adjacent to the distal end of the inflation lumen such that the proximal balloon inflatable interior is in fluid communication with the inflation lumen, and a distal balloon on the shaft distal to the proximal balloon with an inflatable interior located distal to the needle-through port; and c) a tube defining an inflation bridge lumen, external to said elongated shaft and extending between the inflatable interiors of the balloons from a location proximal to a location distal of the needle-through port, and having a proximal port within the proximal balloon interior, and a distal port within the distal balloon interior, to thereby provide for inflation of the distal balloon by placing the distal balloon interior in fluid communication with the proximal balloon interior.