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Wearable medication delivery device

  • US 10,413,665 B2
  • Filed: 11/22/2016
  • Issued: 09/17/2019
  • Est. Priority Date: 11/25/2015
  • Status: Active Grant
First Claim
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1. A wearable medication delivery device, comprising:

  • an environmental sensor configured to detect a condition of a surrounding environment occupied by a user based on sampling air in the surrounding environment;

    a controller coupled to the environmental sensor, and configured to determine that the user is experiencing a medical event based on the condition of the surrounding environment detected by the environmental sensor;

    a reservoir of medication; and

    a needle actuator coupled to the reservoir and to the controller, the needle actuator configured to inject a needle into the user in response to the controller determining the user is experiencing the medical event, wherein the medication is subsequently dispensed from the reservoir to the user through the needle,wherein the needle actuator further comprises;

    a spring;

    a needle driver coupled to the spring at a first end of the needle driver and coupled to the needle at a second, opposite end of the needle driver;

    a first key having a first protrusion positioned in a first opening of the needle driver, the first key and the first opening positioned on a first side of the needle driver;

    a second key having a second protrusion positioned in a second opening of the needle driver, the second key and the second opening positioned on a second, opposite side of the needle driver; and

    an electrically deformable material disposed around the needle driver and positioned through a first hole in the first key and positioned through a second hole in the second key,wherein;

    the needle driver is under load of the spring, and the first and second keys restrict movement of the needle driver when the first protrusion is positioned in the first opening of the needle driver and the second protrusion is positioned in the second opening of the needle driver,when the controller determines the user is experiencing the medical event, the controller is further configured to cause the electrically deformable material to change shape, andin response to the electrically deformable material changing shape, the first protrusion of the first key is released from the first opening of the needle driver and the second protrusion of the second key is released from the second opening of the needle driver, thereby allowing the spring to expand and propel the needle driver in a direction to cause the needle to inject the user.

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