Medicament delivery device

Abstract

The present invention relates to a medicament delivery device comprising a drive means configured to act on a medicament container for expelling a medicament; a holding means configured to hold said drive means in a pre-tensioned state; an activation means configured to interact with said holding means for releasing said drive means from the pre-tensioned state; wherein the device further comprises feedback means configured to interact both with said holding means and with said drive means for generating an audible and/or tactile and/or visual signal indicating that the medicament has been completely expelled.

1 . A housing for a medicament delivery device comprising:
 a proximal end;   a distal end;   an outer surface and an inner surface;   a cut-out located closer to the proximal end than the distal end, where the cut-out extends from the outer surface through to the inner surface to define a hole, where the cut-out has a frame that extends around the hole and protrudes radially outward from the outer surface.   
     
     
         2 . The housing of  claim 1  further comprising a thickness defined by the distance between the outer surface and the inner surface. 
     
     
         3 . The housing of  claim 2  where the cut-out further comprises side walls that project radially inward from the frame a distance greater than the thickness. 
     
     
         4 . The housing of  claim 1  where the frame defines an elongated oval. 
     
     
         5 . The housing of  claim 1  where the frame has two longitudinal sides and two circumferential
 sides, where the longitudinal sides are of equal lengths that are parallel to a longitudinal axis of the housing, where the longitudinal sides are at least twice the length of the circumferential sides. 
 
     
     
         6 . The housing of  claim 1  where the hole allows visual observation of a container coaxially arranged within the housing. 
     
     
         7 . The housing of  claim 1  further comprising a second cut-out located 180 degrees from the cut-out, where the second cut-out is located closer to the proximal end than towards the distal end, where the second cut-out extends from the outer surface through to the inner surface to define a second hole, where the second cut-out has a second frame that extends completely around the second hole, where the second frame protrudes radially outward from the outer surface. 
     
     
         8 . The housing of  claim 5  where the two circumferential sides of the frame are shaped as half circles. 
     
     
         9 . The housing of  claim 1  where the frame extends completely around a periphery of the hole. 
     
     
         10 . A medicament device comprising:
 a housing having a proximal end, a distal end, an outer surface and an inner surface;   a container holder coaxially arranged within the housing and holding a medicament container containing medicament; and   a cut-out located closer to the proximal end than the distal end, where the cut-out extends from the outer surface through to the inner surface to define a hole, where the cut-out has a frame that extends around the hole and protrudes radially outward from the outer surface.   where the hole allows visual observation of the container coaxially arranged within the housing.   
     
     
         11 . The medicament delivery device of  claim 10  further comprises a drive positioned within the housing that generates a visual signal when the medicament is completely expelled from the medicament container.