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Automatic injection device

  • US 20020095120A1
  • Filed: 08/29/2001
  • Published: 07/18/2002
  • Est. Priority Date: 08/29/2000
  • Status: Abandoned Application
First Claim
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1. An automatic injection device comprising:

  • a housing, an ampoule holder including an ampoule said ampoule holder being slidably mounted in said housing, a piston slidably mounted within said ampoule, a resilient element for causing said ampoule holder first to slide with respect to said housing from a storage position to a deployed position, secondly causing said piston to slide within said ampoule from a first position to a second position such that a predetermined amount of the content of said ampoule are expelled, means for retracting said ampoule holder to said storage position when said piston has reached said second position, and means for releasable retaining said resilient element in an armed position characterised in that said resilient element causes said ampoule holder to retract to said storage position.

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