CPC A61M 5/2033 (2013.01) [A61M 5/3202 (2013.01); A61M 5/3257 (2013.01); A61M 2005/206 (2013.01); A61M 2005/208 (2013.01)] | 30 Claims |
16. An auto-injector comprising:
a housing having at least one viewing window for viewing a syringe disposed within the housing; and
a first part movably disposed relative to the housing and comprising a first surface and a second surface axially spaced apart from each other;
a second part slidably disposed relative to the first part and comprising
a first proximally-extending resilient arm with an outward protrusion configured to engage the first surface of the first part such that movement of the first part causes movement of the second part,
a first ramped portion configured to engage the second surface of the first part to cause inward deflection of the first proximally-extending resilient arm when the first ramped portion and the second surface move axially relative to each other, and
a second portion configured to engage a second resilient arm of the auto-injector such that the second resilient arm outwardly deflects relative to the second part to release a plunger rod of the auto-injector from being held in a distal position within the housing such that the plunger rod moves proximally relative to the housing under a proximally-directed biasing force of a drive spring of the auto-injector to dispense the medicament from the syringe.
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