User actuated liquid drug transfer devices for use in ready-to-use (RTU) liquid drug transfer assemblages

1. A user actuated liquid drug transfer device for use in a Ready-To-Use (RTU) liquid drug transfer assemblage for establishing flow communication between a liquid source and an injection vial, the injection vial including a closed end vial tube, and a tubular vial crown having a crown opening stopped by an injection vial stopper, the injection vial having an uppermost injection vial surface, the liquid drug transfer device having a longitudinal device centerline and comprising:

(a) an injection vial adapter having a transverse injection vial adapter top surface and a downward depending injection vial adapter skirt intended for telescopic mounting on the vial crown, said transverse injection vial adapter top surface including a transverse injection vial adapter top surface aperture along the longitudinal device centerline overlying the uppermost injection vial surface on said telescopic mounting on the injection vial;

(b) a liquid source adapter intended for attachment to the liquid source, said liquid source adapter including a transverse liquid source adapter top surface and a downward depending liquid source adapter skirt mounted on said injection vial adapter in a pre-actuated state of the liquid drug transfer device and configured for telescopically receiving said injection vial adapter therein in an actuated state of the liquid drug transfer device on user compaction of the liquid drug transfer device from said pre-actuated state to an actuated state;

(c) a dual ended liquid transfer member having an upward liquid transfer member end for flow communication with the liquid source and a downward liquid transfer member end in flow communication with said upward liquid transfer member end and terminating in a puncturing tip for puncturing the injection vial stopper for flow communication with the vial tube, said puncturing tip overlying the uppermost injection vial surface in said pre-actuated state and puncturing through the injection vial stopper in said actuated state;

(d) a safety catch mechanism requiring an initial manual linear sliding extension for extending said liquid source adapter from said injection vial adapter for priming the liquid drug transfer device to an intermediate primed state, thereby enabling said user compaction from said pre-actuated state to said actuated state;

(e) an extension limit arrangement for limiting said linear sliding extension of said liquid source adapter from said vial injection adapter in said intermediate primed state; and

(f) a snap fit securing arrangement for securing said liquid source adapter on said injection vial adapter in said actuated state.

2. The device according to claim 1 wherein said safety catch mechanism having at least one safety catch each constituted by said liquid source adapter having a downward depending resiliently flexible longitudinal directed flex member terminating at an outward directed hook and said injection vial adapter having an upward resiliently flexible longitudinal directed flex member terminating at an inward directed hook, said outward directed hook engaging said inward directed hook in said pre-actuated state, said outward directed hook being disengaged from said inward directed hook in said intermediate primed state and said outward directed hook sliding past said inward directed hook on compaction of the liquid drug transfer device from said intermediate primed state to said actuated state wherein said downward depending resiliently flexible longitudinal directed flex member and said upward resiliently flexible longitudinal directed flex member are substantially co-extensive in said actuated state.

3. The device according to claim 1 wherein said injection vial adapter includes a longitudinal directed flex member with an outward directed protrusion, said liquid source adapter skirt includes a longitudinal directed elongated extension limit aperture disposed remote from said liquid source adapter top surface and a securing aperture disposed adjacent said liquid source adapter top surface, said outward directed protrusion engaging said extension limit aperture for limiting said extension of said liquid source adapter from said injection vial adapter in said intermediate primed state and said outward directed protrusion engaging said securing aperture for securing said liquid source adapter on said injection vial adapter in said actuated state.

4. The device according to claim 1 for use with a male connector and wherein said liquid source adapter is integrally formed with said dual ended liquid transfer member and said upward liquid transfer member end is constituted by an access transfer port for flow communication with the male connector.

5. The device according to claim 1 for use with an infusion bag having an injection port and wherein said dual ended liquid transfer member is a discrete component interdisposed between said injection vial adapter and said liquid source adapter and said dual ended liquid transfer member terminates in a second puncturing tip constituting said upward liquid transfer member end for puncturing the injection port in said actuated state.

6. The device according to claim 1 for use with an infusion bag having an administration port and wherein the liquid drug transfer device includes a trifurcated body having an IV spike for sliding sealed insertion into the infusion bag's administration port, a substitute IV port for sliding sealed insertion of an infusion set, and said liquid source adapter,

said liquid source adapter being integrally formed with said dual ended liquid transfer member and said upward liquid transfer member end being in continuous flow communication with said IV spike and said substitute IV port.

7. A Ready-To-Use (RTU) liquid drug transfer assemblage including a liquid drug transfer device according to claim 1 .