Nested balloon catheter for localized drug delivery

摘要

A balloon catheter for delivering a therapeutic and/or diagnostic agent to tissue is described including an outer balloon having a wall with an opening therethrough and an inner surface, an inner balloon disposed in the outer balloon, enclosing an inflation chamber and having an outer surface defining a space between the outer surface of the inner balloon and the inner surface of the outer balloon, a catheter having a first lumen in fluid communication with the space between the inner balloon and the outer balloon for supplying the agent thereto, and a second lumen through which fluid is supplied to the inflation chamber for inflating the inner balloon to urge the agent out of the opening in the outer balloon, wherein the outer balloon and/or the inner balloon comprise at least one protrusion for directing the agent formed by an inner balloon wall and/or the outer balloon wall.

主权项

1. A balloon catheter for delivering a therapeutic and/or diagnostic agent to tissue, comprising:
an outer balloon having a wall with at least one opening therethrough and an inner surface; an inner balloon at least partially disposed in said outer balloon, said inner balloon at least partially enclosing an inflation chamber and having an outer surface defining a space between the outer surface of said inner balloon and the inner surface of said outer balloon; a catheter having
a first lumen in fluid communication with the space between the outer surface of said inner balloon and the inner surface of said outer balloon for supplying a therapeutic and/or diagnostic agent thereto; anda second lumen through which fluid is supplied to the inflation chamber of said inner balloon for inflating said inner balloon to urge the therapeutic and/or diagnostic agent out of the at least one opening in the wall of said outer balloon and into tissue; wherein at least one of said outer balloon and said inner balloon comprise at least one protrusion for directing the therapeutic and/or diagnostic agent; and wherein the at least one protrusion is formed by at least one of an inner balloon wall and the outer balloon wall.