Patent ID: 8337462

Claim:
A method of delivering therapeutic or diagnostic agents into a vessel wall, comprising: i) deploying a minimally invasive device, comprising: an introducer tube; a tubular member having a proximal end, a distal end, and a first lumen extending therebetween, the tubular member being slidably disposed within the introducer tube; and a plurality of hollow delivery struts disposed on the distal end of the tubular member and in fluid communication with the first lumen, each hollow delivery strut adapted to pierce through inner most layers of the vessel wall and each, comprising at least one exit port, and at least one stopper to prevent the delivery struts from piercing through the outer most layers of the vessel wall, the at least one stopper extending from the hollow delivery strut; an extension at a distal portion of at least one of the hollow delivery struts, the extension comprising at least one other exit port in fluid communication with the hollow delivery strut and; ii) securing the hollow delivery struts at a first treatment location in the vessel wall; iii) administering the therapeutic or diagnostic agents through the hollow delivery struts into the vessel wall at the first treatment location.