Patent ID: 8460238
Filing Date: 2013-06-11
Classification: A61L,A61M

Abstract:
1. A delivery catheter for delivering pharmacological, chemical, or bioactive agents at a selected location within a patient's body comprising: a shaft having proximal and distal ends and a first lumen extending through the shaft; a balloon mounted about a distal region of the shaft, the balloon being expandable and having a porous wall adapted to enable fluid directed under pressure through the first lumen into an interior of the balloon to be forced through the porous balloon wall; and a coating covering an external surface of the balloon and blocking pores of the porous wall therein, the coating comprising a matrix formed from a biocompatible polymer soluble in a selected biocompatible fluid solvent and a plurality of microspheres carrying a selected agent; whereby the balloon is adapted to be inflated with the selected fluid solvent to dissolve the coating polymer and thereby release the microspheres from the matrix.