초록 ▼

The present invention is directed toward a locking mechanism for aiding in the prevention of accidental or unintentional disengagement of the nozzle assembly from a needleless injection device. In one embodiment of the locking mechanism, a stud positioned on the nozzle assembly engages a recess in t

The present invention is directed toward a locking mechanism for aiding in the prevention of accidental or unintentional disengagement of the nozzle assembly from a needleless injection device. In one embodiment of the locking mechanism, a stud positioned on the nozzle assembly engages a recess in the injector to help to deter the nozzle assembly from rotating during firing of the injector. In another embodiment of the locking mechanism, a nib on the nozzle assembly engages a recess in the injector to deter the nozzle assembly from rotating during firing of the injector. A retaining element may be utilized within the injector to provide the recesses for engagement with the locking mechanisms.

대표청구항 ▼

[ What is claimed is:] [1.] An injector comprising:an injector body;a nozzle assembly comprising a tubular body having a tip ends, a tail end and an internal chamber defined therebetween, said tip end for positioning against an injection site, said internal chamber configured and dimensioned for hol

[ What is claimed is:] [1.] An injector comprising:an injector body;a nozzle assembly comprising a tubular body having a tip ends, a tail end and an internal chamber defined therebetween, said tip end for positioning against an injection site, said internal chamber configured and dimensioned for holding a medicament and defining an orifice at the tip end for expelling the medicament therefrom;connecting means disposed about the circumference of the nozzle assembly tubular body for engaging the injector body; andmeans for locking the nozzle assembly tubular body onto the injector body, the locking means comprising at least one recess in the injector body, and at least one protrusion positioned on an external surface of the nozzle assembly tubular body and configured for engagement with the recess;wherein the injector body comprises a retaining element having the at least one recess for engagement by the protrusion, said retaining element having a first end for accepting the nozzle assembly, and a second end opposite the first end forming a wall having an opening and the retaining element comprises a cylindrical ring having an internal diameter at least equal to or greater than the external diameter of the nozzle assembly tubular body and the retaining element is retained within the interior of the injector.