Patent ID: 9717855
Date: 2017-08-01
CPC Classifications: A61M

Claim:
1. An adaptor for use with a drug delivery device having a reservoir for containing a product, said adaptor comprising: a collar engageable with a distally projecting end-piece of said reservoir, said collar having a globally elongated shape and comprising a proximal region and a distal region, said collar comprising an abutment surface on an inner wall of the collar, said abutment surface configured to directly contact a radial proximal face of an annular ridge on an outer wall of the distally projecting end-piece of said reservoir when said collar is urged in a distal direction to engage with said distally projecting end-piece, wherein said abutment surface is configured to limit translational movement of said collar with respect to said distally projecting end-piece once said collar is engaged with the distally projecting end-piece, at least one adaptor anti-rotation member configured to limit the rotation of said collar with respect to said distally projecting end-piece once said collar is engaged with the distally projecting end-piece of said reservoir, at least one deactivating member extending proximally from a proximal end of the distal region of the collar and neutralizing said adaptor anti-rotation member in response to a turning torque equal or greater than a predetermined value applied to said collar when said collar is engaged with said distally projecting end-piece, thereby allowing the rotation of said collar with respect to said distally projecting end-piece, wherein said collar has a thread defined on an inner surface of a distal wall of said collar, wherein said at least one deactivating member is capable of being engaged with at least one end-piece anti-rotation member for a turning torque less than said predetermined value when said collar is engaged with said distally projecting end-piece, wherein said at least one deactivating member is radially outwardly deflectable under the effect of said turning torque equal to or greater than said predetermined value applied to said collar at said thread, said at least one deactivating member configured to disengage said at least one end-piece anti-rotation member to allow the collar to rotate with respect to said distally projecting end-piece.