Described is a microneedle arrangement (1) comprising a body (2) having a proximal portion and a distal portion, a plurality of recesses (7) formed in proximal portion of the body (2), a microneedle array (5) disposed on the distal portion, and a connection needle (8) in fluid communication with the microneedle array (5) and extending proximally from the microneedle array (5). Further described is an adapter (9) comprising a coupling adapted to engage a medicament delivery device, an opening (14) adapted to receive the body (2), and a plurality of resilient latches (12) adapted to releasably engage the plurality of recesses (7) of the microneedle arrangement (1) when the body (2) is inserted into the opening (14).
