CPC A61M 25/0693 (2013.01) [A61M 25/0606 (2013.01); A61M 25/0637 (2013.01)] | 18 Claims |
1. An IV access device comprising:
a catheter adapter;
a catheter extending distally from the catheter adapter;
a needle, comprising a lumen; and
a needle hub coupled to the catheter adapter, wherein a proximal end of the needle is secured within the needle hub and the needle extends through the catheter, wherein the needle hub comprises a flash chamber;
a path-defining structure inserted into the flash chamber of the needle hub; and
a visualization channel disposed between an inner surface of the needle hub and an outer surface of the path-defining structure, wherein the path-defining structure and visualization channel are configured such that blood flashback flows from the lumen of the needle proximally between a top portion of the outer surface of the path-defining structure and the needle hub in the visualization channel, wherein a bottom portion of the outer surface opposite the top portion contacts the needle hub such that the blood flashback does not flow between the bottom portion of the outer surface and the needle hub.
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