Automatic injection device

Abstract

Automatic injection device includes a housing, a syringe, a plunger, and a syringe carrier. The housing includes a barrel between a first end and a second end. The barrel includes an elongated window to allow viewing of contents inside the housing. The syringe is disposed within the housing and has a reservoir. The plunger is at least partially disposed within the syringe and includes a visual indicator. The syringe carrier is disposed within the housing and configured to contain the syringe and displace the syringe within the housing between a first position and a second position. The syringe carrier can be substantially transparent. The syringe carrier can have first and second legs and an extension disposed therebetween, and at least a portion of the extension can be configured to align with the window and the reservoir when the syringe carrier is in the first position.

What is claimed is: 
     
         1 . An automatic injection device comprising:
 a housing having a first end, a second end, and a barrel between the first end and the second end, the barrel comprising an elongated window to allow viewing of contents inside the housing;   a syringe disposed within the housing and having a first end, a second end, and a reservoir between the first end and the second end;   a plunger at least partially disposed within the syringe and comprising a visual indicator on a portion of the plunger; and   a syringe carrier disposed within the housing and configured to contain the syringe and displace the syringe within the housing between a first position and a second position, the syringe carrier being substantially transparent and having first and second legs and an extension disposed therebetween, at least a portion of the extension configured to align with the window and the reservoir when the syringe carrier is in the first position.   
     
     
         2 . The automatic injection device of  claim 1 , the syringe carrier further comprising a transparent side wall, at least a portion of the transparent side wall being configured to align with the window and the visual indicator when the syringe carrier is in the second position. 
     
     
         3 . The automatic injection device of  claim 1 , wherein the first position is a pre-injection position. 
     
     
         4 . The automatic injection device of  claim 1 , wherein the second position is a post-injection position. 
     
     
         5 . The automatic injection device of  claim 1 , wherein the syringe carrier is configured to allow viewing of substantially all of a liquid therapeutic agent in the reservoir when the syringe carrier is in the first position. 
     
     
         6 . The automatic injection device of  claim 1 , further comprising a liquid therapeutic agent in the reservoir, the liquid therapeutic agent having a volume of 0.4 mL. 
     
     
         7 . The automatic injection device of  claim 1 , further comprising a liquid therapeutic agent in the reservoir, the liquid therapeutic agent having a volume of 0.8 mL. 
     
     
         8 . The automatic injection device of  claim 1 , further comprising a liquid therapeutic agent in the reservoir, the liquid therapeutic agent comprising a protein. 
     
     
         9 . The automatic injection device of  claim 1 , further comprising a liquid therapeutic agent in the reservoir, the liquid therapeutic agent comprising adalimumab.