| 摘要 |
<p>A butterfly needle device (10) having a passive needle protection system includes a needle (16) that has a proximal end, a distal tip and defines a needle axis. A cylindrical base member (26) having an axially aligned groove (44) is disposed over the needle (16) with a first wing (28) extending radially from the base member (26). A second wing (34) is provided for rotation about the needle axis relative to the first wing (28) between a closed configuration in which the wings are juxtaposed and an open configuration in which the wings are displaced from each other. A cylindrical needle guard (36) having a plug (42) is disposed over the needle (16). A spring (38) biases the needle guard (36) distally relative to the base member (26). A wing- activated mechanism is provided to align the plug (42) with the groove (44) after a closed-open-closed wing cycle allowing the needle guard (36) to distally advance to cover the needle tip at the end of the cycle.</p> |
