CPC A61B 18/04 (2013.01) [A61B 18/00 (2013.01); A61B 18/1477 (2013.01); A61B 90/37 (2016.02); A61B 90/39 (2016.02); A61M 25/0084 (2013.01); A61M 25/0108 (2013.01); A61M 25/04 (2013.01); A61B 2018/00166 (2013.01); A61B 2018/00285 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00404 (2013.01); A61B 2018/00434 (2013.01); A61B 2018/00547 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/046 (2013.01); A61B 18/1492 (2013.01); A61B 2090/3735 (2016.02); A61B 2090/376 (2016.02); A61B 2090/3762 (2016.02); A61B 2090/378 (2016.02); A61B 2090/3782 (2016.02); A61B 2090/3966 (2016.02); A61M 2025/0087 (2013.01); A61M 25/1002 (2013.01)] | 17 Claims |
1. A method comprising:
advancing a distal portion of a catheter having at least three needle guide elements and at least three needles to an artery within a human body;
advancing the at least three needle guide elements to expand outwardly against a wall of the artery, wherein the at least three needle guide elements center the distal portion of the catheter relative to the artery in preparation for deployment of the least three needles;
advancing the at least three needles through the at least three needle guide elements into tissue after the at least three needle guide elements center the distal portion of the catheter, wherein the at least three needles are advanced at least 2 mm beyond the wall of the artery; and
injecting fluid into the tissue through the at least three needles.
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