| CPC A61M 5/3245 (2013.01) [A61M 5/2033 (2013.01); A61M 5/31513 (2013.01); A61M 5/3257 (2013.01); A61M 2005/206 (2013.01); A61M 2005/208 (2013.01); A61M 5/2466 (2013.01); A61M 2005/3247 (2013.01); A61M 2005/3267 (2013.01)] | 18 Claims |

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1. An injector device comprising:
a housing for receiving a medicament cartridge;
a needle unit comprising a needle;
a first sleeve slidable along a longitudinal axis of the housing from a first position, in which the first sleeve conceals the needle, to a second position, in which the needle is exposed from an end of the first sleeve,
wherein the first sleeve is configured to engage the needle unit so that, during use, movement of the first sleeve from the first position to the second position moves the needle unit from a primary position to a secondary position, and
wherein, in the secondary position, the needle unit is located over an end of the medicament cartridge when the medicament cartridge is received in the injector device; and
a second sleeve arranged to move telescopically with respect to the first sleeve, the first sleeve configured to extend from the second sleeve when the first sleeve is in the first position, wherein the first sleeve comprises a resiliently displaceable arm extending into the housing and into contact with the needle unit, wherein the resiliently displaceable arm is configured to disengage from the needle unit by moving away from the longitudinal axis as the first sleeve is moved from the first position to the second position, thereby allowing the first sleeve to move independently of the needle unit.
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