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Automatic injection device with reset feature

  • US 20020120235A1
  • Filed: 01/02/2002
  • Published: 08/29/2002
  • Est. Priority Date: 01/05/2001
  • Status: Active Grant
First Claim
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1. A dose setting device for use in combination with a fluid-filled reservoir, the dose setting device being adapted for repetitive injection of individually set doses of fluid from the reservoir, the dose setting device comprising:

  • a housing (10), a drive member (30) adapted to expel a dose of medicine from the reservoir, a spring means (70), a dose setting assembly (40, 50, 60) mounted in the housing and connected to the spring means, the dose setting assembly comprising a dose setting member (50) being moveable in a first direction to a selected set position against the bias of the spring means, wherein movement of the dose setting member is accompanied by straining of the spring, and wherein the dose setting member is moveable in a second direction to selectively adjust the set dose, a latch means (80, 90) associated with the housing to retain the apparatus in the set position against the bias of the spring means, and the latch means being releasable to cause the drive member to expel the set dose from the syringe, the force for expelling the set dose being provided by the spring means.

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