Catheter connectors, systems, and methods in which one or more catheters are attached to a connector. In the illustrated embodiment, the catheter is retained relative to the connector by inward radial compression between an outer surface of a hollow connector pin inserted into the catheter, and a clamping arm that pivots relative to the connector pin and pushes against an outer surface of the catheter. One or more sleeves may slide over the clamping arm to bias the clamping arm radially inwardly.
