Automatic injector

摘要

An automatic injector dispenses a predetermined dose of medicament without a user having to manually force the needle into an injection site. The automatic injector includes a needle cover having a locked retracted position with respect to the injector housing prior to a medicament dispensing operation. The needle cover is operative to engage an injection site prior to a medicament dispensing operation.

主权项

1. An automatic injector comprising:
a housing; a cartridge container disposed within the housing; a cartridge received in the cartridge container, the cartridge containing a medicament and including a needle assembly to allow the medicament to be dispensed there through, the needle assembly comprising a needle; an actuation assembly disposed within the housing and having a stored energy source, the actuation assembly operative to drive the medicament through the needle during a medicament dispensing operation in response to release of stored energy from the stored energy source; and a needle cover received in the housing, the needle cover having an opening operative to receive there through at least part of the cartridge container, the needle cover having a locked retracted position with respect to the housing prior to a medicament dispensing operation, the needle cover having a surface operative to contact an injection site prior to a medicament dispensing operation.