CPC A61M 5/20 (2013.01) [A61M 5/321 (2013.01); A61M 5/3257 (2013.01); A61M 2005/2013 (2013.01); A61M 2005/3247 (2013.01); A61M 2005/3267 (2013.01); A61M 2205/6081 (2013.01)] | 22 Claims |
1. An auto-injector comprising:
a housing;
a first sleeve comprising a first indicator of a first color, the first sleeve configured to move relative to the housing while remaining concentric to the housing; and
a second sleeve comprising a second indicator of a second color different than the first color, the first sleeve configured to move relative to the second sleeve while remaining concentric to the second sleeve, the first sleeve extending axially from the second sleeve, and a distal end of the second sleeve being larger than a distal end of the first sleeve,
wherein the auto-injector is configured such that when the auto-injector is pressed against an injection site, the distal end of the second sleeve touches the injection site, and a movement of the first sleeve relative to the housing is required before the auto-injector can insert a needle into the injection site and deliver a medicament,
wherein the first indicator and the second indicator are indicative of an injection process of the auto-injector, and the auto-injector is configured such that after the injection process, the auto-injector can be withdrawn from the injection site such that a compression spring relaxes to cause the needle to be covered by the auto-injector, and
wherein the housing comprises a latch member, and the first sleeve comprises a groove configured to receive the latch member to lock the first sleeve in a position relative to the housing in which a distal needle tip of the needle is covered by the auto-injector.
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