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Auto injector with automatic needle retraction

  • US 8,409,141 B2
  • Filed: 11/12/2008
  • Issued: 04/02/2013
  • Est. Priority Date: 11/12/2007
  • Status: Active Grant
First Claim
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1. An auto injector with a housing for accommodation ofa syringe with a needle, the syringe being movably positioned in the housing between a first position in which position the needle is accommodated inside the housing and a second position in which position the needle protrudes outside the housing,a driver comprising a single spring, the driver being configured for applying a force to the syringe thereby moving the syringe from the first position to the second position,wherein the driver is also configured for applying a force to the syringe thereby moving the syringe from the second position to a retracted position upon user operation of a release member.

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