Injection device

Abstract

An autoinjector device is provided. The autoinjector device can include an activator unit including an activation housing, an activation guard, and an activation shell such that a portion of the activation guard extends beyond a proximal end of the activation shell. The autoinjector device can include camouflage on a proximal surface to obscure a device lock hole and reduce user confusion around needle orientation.

1 .- 14 . (canceled) 
     
     
         15 . An activator unit for an autoinjector, the activator unit comprising:
 an activation housing having an activation engine;   an activation guard configured about an exterior surface of the activation housing, the activation guard extending beyond a proximal end of the activation housing; and   an activation shell configured about at least a portion of an exterior surface of the activation guard and the activation guard extending beyond a proximal end of the activation shell.   
     
     
         16 . The activator unit of  claim 15 , wherein the activation housing includes at least one protrusion, and
 wherein the activation guard includes a groove surrounding the at least one activation housing protrusion such that the activation guard is configured to rotate about the activation housing.   
     
     
         17 . The activator unit of  claim 16 , wherein the activation guard includes at least one protrusion, and
 wherein the activation shell includes at least one groove surrounding the at least one activation guard protrusion such that the activation shell is configured to translate about the activation guard.   
     
     
         18 . The activator unit of  claim 15 , wherein a proximal surface of the activation shell includes a camouflage structure to camouflage a device lock protrusion opening. 
     
     
         19 . The activator unit of  claim 15 , wherein a distal surface of the activation guard abuts a shoulder of the activation housing. 
     
     
         20 . The activator unit of  claim 15 , wherein the activation shell and activation guard are configured such that relative axial rotation between them is prevented. 
     
     
         21 . The activator unit of  claim 15 , wherein the activation shell and activation guard are configured such that they rotate together. 
     
     
         22 . An activation guard for an autoinjection device to prevent a user from activating the autoinjection device in an incorrect direction, the activation guard comprising:
 a guard member to extend proximally beyond an activation housing and an activation shell;   a groove configured on a portion of the guard member to engage an activation housing projection; and   a projection configured on a portion of the guard member to engage an activation shell groove.   
     
     
         23 . The activation guard of  claim 22 , wherein a portion of the activation housing is positioned within an interior area of the activation guard, and
 wherein a portion of the activation guard is positioned within an interior area of the activation shell.   
     
     
         24 . The activation guard of  claim 22 , wherein the guard member abuts a user in the incorrect direction, and
 wherein an injection unit abuts a user in a correct direction.   
     
     
         25 .- 37 . (canceled)