| 摘要 |
A safety intravenous catheter assembly includes a catheter hub (18), a needle cover (122) attachable to and releasably lockable with the catheter hub (18), and a needle (12) which extends through and is withdrawn into the needle cover (122). In one embodiment, the safety intravenous catheter assembly is configured so that the fixedly connected catheter hub (18) and needle cover (122) may rotate around the needle (12). A stop assembly (47, 142) is attached to the needle cover (122) for maintaining a tip of the needle (12) within the needle cover (122) after catheter insertion. The stop assembly (47, 142) may include a first locking position whereby the catheter hub (18) cannot disengage from the needle cover (122), and a second locking position whereby the catheter hub (18) can disengage from the needle cover (122). |
