Dispense interface with lockout element

Abstract

The invention is related to an apparatus comprising a dispense interface comprising a lockout element for use with a drug delivery device, the lockout element comprising at least one spring component removeably maintained in a respective first position such that when the dispense interface is first attached and then removed from said drug delivery device, each spring component moves into a respective second position, which respective second position is configured to prevent said dispense interface from being reattached to a drug delivery device.

1 . An apparatus comprising:
 a dispense interface for use with a drug delivery device, the dispense interface comprising a lockout element, the lockout element comprising at least one spring component removeably maintained in a respective first position such that when the dispense interface is first attached and then removed from said drug delivery device, each spring component moves into a respective second position, which respective second position is configured to prevent said dispense interface from being reattached to a drug delivery device.   
     
     
         2 . The apparatus according to  claim 1 , wherein each spring component comprises a respective button spring, each respective button spring comprising a respective set of winged tabs. 
     
     
         3 . The apparatus according to  claim 2 , wherein each button spring is an over-centering wing spring. 
     
     
         4 . The apparatus according to  claim 2 , wherein each set of winged tabs comprises three winged tabs. 
     
     
         5 . The apparatus according to  claim 2 , wherein each button spring is dome-shaped. 
     
     
         6 . The apparatus according to  claim 2 , wherein each winged tab of each respective set of winged tabs is configured to move radially inward when the respective button spring moves into the respective second position. 
     
     
         7 . The apparatus according to  claim 1 , wherein when in the respective second position the spring component is configured to mechanically block said dispense interface from being reattached to a drug delivery device. 
     
     
         8 . The apparatus according to  claim 1 , wherein each spring component is configured to be maintained in a third position while the dispense interface is attached to the drug delivery device, wherein in the third position the spring components are biased to move into the second position but are prevented from moving into the second position by the drug delivery device. 
     
     
         9 . The apparatus according to  claim 1 , wherein the dispense interface is configured to attach to the drug delivery device to form a first fluid connection between the dispense interface and a first reservoir of the drug delivery device, and to form a second fluid connection between the dispense interface and a second reservoir of the drug delivery device. 
     
     
         10 . The apparatus according to  claim 9 , wherein the dispense interface comprises a first spring component associated with the first fluid connection, and a second spring component associated with the second fluid connection. 
     
     
         11 . The apparatus according to  claim 1 , wherein the dispense interface comprises a mounting hub configured for releasable attachment of a needle assembly.