Patent ID: 8529518

Claim:
A drug delivery system comprising: (a) a main portion comprising: a drug reservoir or means for receiving a drug reservoir, and drug expelling means for expelling drug from the reservoir, (b) a needle assembly comprising: a needle hub adapted to be mounted on the main portion, a hollow needle mounted in the needle hub and comprising a distal pointed end and a proximal end, the proximal end being adapted to be arranged in fluid communication with the reservoir when the hub is mounted on the main portion, and a needle cap releasably mountable on the hub to cover the distal pointed end, (c) a cap portion releasably mountable to the main portion and comprising: first gripping means reversibly operatable between: (i) a first state in which there is no gripping engagement between the first gripping means of a mounted cap portion and a given first part of a needle assembly when the needle assembly is mounted on the main portion, this allowing the cap portion to be removed from the main portion without removing the given first part from the main portion, and (ii) a second state in which the first gripping means of the cap portion grippingly can engage the given first part of a needle assembly mounted on the main portion, this allowing the cap portion to be removed from the main portion together with the given first part when the cap portion is removed from the main portion, and first user actuation means for operating the first gripping means between the two states.