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AUTO-INJECTOR DEVICE

  • US 20190328968A1
  • Filed: 01/20/2018
  • Published: 10/31/2019
  • Est. Priority Date: 01/20/2017
  • Status: Active Grant
First Claim
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1. An auto-injector for hypodermic delivery of medication, comprising:

  • a first subassembly releasably coupled to a second subassembly;

    wherein the first subassembly includesa cartridge holder configured to receive a medication cartridge,a hollow injection needle having a longitudinal cavity through which medication can pass from the medication cartridge, anda needle shield moveable relative to the cartridge holder between an extended position enclosing the needle and a retracted position in which at least a proximal end of the needle is not enclosed by the needle shield; and

    wherein the second subassembly includesa housing, anda moveable plunger rod positioned within the housing,wherein movement of the needle shield in a proximal direction from the retracted position to the extended position will automatically release the first subassembly from the second subassembly.

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