A medicament dispensing mechanism is disclosed that is configured to eject successive doses of the medicament from a medicament chamber. An embodiment of the dispensing mechanism includes a housing and a plunger rod configured for ejecting the doses of medicament from the chamber. The dispensing mechanism further includes an actuation mechanism that comprises a trigger associated with the housing and having a ready and a fired position with respect thereto. The trigger is configured for manipulation by a user for successive movement in a generally axial dosing motion from the ready position to the fired position in which the trigger is associated with the plunger rod to cause the plunger rod to eject one of the doses of a predetermined volume and a resetting motion from the fired position to the ready position that comprises axial rotation, wherein the trigger is uncoupled from the plunger rod during the resetting motion.
申请公布号
US8376993(B2)
申请公布日期
2013.02.19
申请号
US20090536106
申请日期
2009.08.05
申请人
ANTARES PHARMA, INC.;COX JANICE L.;RUST MATTHEW;KRAMER THOMAS E.;HOEFT PETER
发明人
COX JANICE L.;RUST MATTHEW;KRAMER THOMAS E.;HOEFT PETER