CPC A61B 18/1492 (2013.01) [A61B 17/3403 (2013.01); A61B 17/3478 (2013.01); A61B 18/04 (2013.01); A61B 18/1477 (2013.01); A61B 90/39 (2016.02); A61M 5/3286 (2013.01); A61M 25/0084 (2013.01); A61B 5/0205 (2013.01); A61B 2017/22071 (2013.01); A61B 2018/00166 (2013.01); A61B 2018/00267 (2013.01); A61B 2018/00285 (2013.01); A61B 2018/00351 (2013.01); A61B 2018/00434 (2013.01); A61B 2018/00505 (2013.01); A61B 2018/00547 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/046 (2013.01); A61B 2018/048 (2013.01); A61B 2018/1425 (2013.01); A61B 2018/1475 (2013.01); A61B 2090/376 (2016.02); A61B 2090/3966 (2016.02); A61M 5/158 (2013.01); A61M 2025/0004 (2013.01); A61M 2025/0087 (2013.01); A61M 2025/0186 (2013.01); A61M 25/0662 (2013.01); A61M 2205/192 (2013.01); A61M 2205/195 (2013.01)] | 18 Claims |
1. A catheter for fluid delivery into tissue outside of an interior wall of a target vessel of a human body comprising:
a catheter body having a fluid injection lumen;
a needle guiding element adapted to expand outwardly toward the interior wall of the target vessel; and
an injector tube having an injector tube lumen, the injector tube further connected to a distal sharpened needle, the injector tube lumen being in fluid communication with the fluid injection lumen of the catheter body, the injector tube adapted to be advanced outwardly, guided by the needle guiding element, the distal sharpened needle having an opening for fluid delivery into the tissue outside of the interior wall of the target vessel,
the distal sharpened needle further being a non-coring needle having a first point on an outer cylindrical surface of the injector tube, a second point forming a distal needle tip, and concave edges and a heel between the first point and the second point, the first point and the second point lie on an axis extending along the outer cylindrical surface of the injector tube such that the distal needle tip is linearly aligned with the outer cylindrical surface of the injector tube, wherein each concave edge curves away from the axis extending along the outer cylindrical surface of the injector tube such that the concave edges do not lie on a plane.
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