DRUG DELIVERY DEVICE WITH SHIELD OPERATED NEEDLE ACTUATOR

摘要

A drug delivery device comprises a shield (30) moveably mounted to a main portion and being displaceable by a user between a shielding and a non-shielding position, wherein a needle assembly (50) can be mounted on a reservoir, the shield covering the needle assembly in the shielding position. The needle assembly is moveable between a dis-connected and connected position in fluid communication with the reservoir. In such an arrangement a mounted needle assembly is moved from the dis-connected to the connected position when the shield is moved from the shielding to the non-shielding position, and moved from the connected to the dis-connected position when the shield is moved from the non-shielding to the shielding position.

主权项

1. A drug delivery device, comprising:
a main portion comprising:
a drug reservoir having a distal outlet,a needle mount associated with the distal outlet and adapted to allow a needle assembly to be mounted in fluid communication with the reservoir, anddrug expelling means for expelling drug from the reservoir, the drug delivery device being adapted to be used in combination with a needle assembly comprising:
a needle hub adapted to be mounted on the main portion needle mount,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 needle hub is mounted on the main portion needle mount,wherein a mounted needle assembly is moveable between a connected position in which the hollow needle is arranged in fluid communication with the reservoir and a disconnected position in which the hollow needle is not arranged in fluid communication with the reservoir,
the drug delivery device further comprising:
a shield moveably mounted to the main portion and being displaceable by a user between a shielding and a non-shielding position,wherein the shield in the shielding position covers the distal pointed end of a mounted needle assembly,wherein the shield in the non-shielding position allows the distal pointed end of a mounted needle assembly to be inserted subcutaneously,wherein a mounted needle assembly is moved from the dis-connected to the connected position when the shield is moved from the shielding to the non-shielding position,wherein a mounted needle assembly is moved from the connected to the disconnected position when the shield is moved from the non-shielding to the shielding position, andwherein the needle mount relative to the drug reservoir is moveable between a proximal position in which a mounted needle assembly is in the connected position and a distal position in which a mounted needle assembly is in the dis-connected position, the needle mount being moved between the two positions when the shield is displaced between the non-shielding and shielding positions.