Patent ID: 7736346
Filing Date: 2010-06-15
Classification: A61B,A61M

Abstract:
1. A process for locally treating tissue at a treatment site inside the body, including: using an elongate catheter having a fluid delivery structure at its distal end to guide the fluid delivery structure to an intended treatment site inside the body, and causing a penetrating element of the fluid delivery structure to penetrate tissue to a first depth at the treatment site; and with the penetrating element penetrated to the first depth, supplying a first fluid agent comprising a therapeutic agent to surrounding tissue via a first fluid passage through the fluid delivery structure open to an exterior thereof along the tissue penetrating element, to deliver the first fluid agent for infusion into the surrounding tissue at a selected depth within the tissue; further with the penetrating element penetrated to the first depth, supplying a second fluid agent to the tissue via a second fluid passage through the fluid delivery structure open to said exterior along the tissue penetrating element, to deliver the second fluid agent for infusion into the surrounding tissue at the selected depth to commingle the first and second fluid agents within the tissue, to provide a matrix within the tissue for effecting a controlled release of the therapeutic agent.