A Catheter based Medical Device and Method for Delivery of a Therapeutic Agent

摘要

The invention provides medical device for delivery of a therapeutic agent comprising: a body capable of moving to a target site, for delivery of the therapeutic agent, in a forward direction and at least one needle mounted for movement with respect to said body along its central axis for selective movement away from said body. A moveable central core, comprising a wedge, is adapted to move, in the opposite direction to said body, to contact said needle to deploy the needle end away from said central axis to engage said target site for delivery of the therapeutic agent. The inventive device is designed primarily to deliver therapeutic agents/components locally to a diseased artery wall. One of the invention's main advantages is that it does not require a balloon and provides a novel method to advance and retract delivery needles to deliver therapeutic agents/ compounds locally.