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DEVICES, SYSTEMS AND METHODS FOR MEDICAMENT DELIVERY

  • US 20190009027A1
  • Filed: 08/31/2018
  • Published: 01/10/2019
  • Est. Priority Date: 02/01/2005
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a housing defining a gas chamber;

    a medicament container disposed within the housing;

    a needle fluidically coupled to the medicament container, the needle configured to move between a first needle position, in which the needle is disposed within the housing, and a second needle position in which a portion of the needle extends from the housing;

    a retraction spring configured to bias the needle towards the first needle position;

    an expandable assembly including a flexible member and a distal member, the flexible member configured to transition between a collapsed configuration and an expanded configuration; and

    an energy storage member configured to produce a pressurized gas within the gas chamber, the pressurized gas exerting a force to move the needle from the first needle position to the second needle position and to move the distal member of the expandable assembly within the medicament container to convey a medicament from the medicament container via the needle, the flexible member of the expandable assembly configured to actuate a valve to release the pressurized gas from the gas chamber when the flexible member is transitioned from the collapsed configuration to the expanded configuration.

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