Patent ID: 8382713
Filing Date: 2013-02-26
Classification: A61M

Abstract:
1. A drug delivery device, which comprises: (a.) a main housing having a linear shaft with a proximal end, a distal end and a side wall, and having a drug holding reservoir within said shaft toward said proximate end, and having a drug release conduit located on said shaft side wall toward said distal end, and having a shaft outlet located at said distal end of said shaft; (b.) a fill port, the fill port being connected to a fill port inlet conduit; (c.) said fill port inlet conduit connected to said shaft at said holding reservoir; (d.) a one-way valve located within said inlet conduit between said fill port and said holding reservoir positioned to permit flow from to said holding reservoir and not the opposite; (e.) a slide valve having a proximal end, said proximal end being a first wall, and having a distal end, said distal end being a second wall, said side valve having a side wall connecting said distal end and said proximal end, said slide valve first wall facing toward said holding reservoir and said slide valve second wall facing away from said holding reservoir, said first wall having a liquid inlet channel connected to said side wall, and said second wall having a liquid outlet channel connected to said side wall, said liquid inlet channel and said liquid outlet channel being in proximity to one another and not directly connected to one another, and having a seal located on said side wall between said liquid inlet channel and said liquid outlet channel, said slide valve being located in said shaft and adapted for movement within said shaft from a first position to a second position and vice versa; (f.) a needle functionally connected to said slide valve liquid outlet channel; (g.) a plunger being partially and slideably located in said proximal end of said shaft, said plunger having a rod and a piston, said plunger having sufficient length to be moved from a first plunger position to a second plunger position to a third plunger position, and vice versa; (h.) a spring located in said shaft at said distal end of said slide valve biasing said slide valve to its first position;