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US 11,826,551 B2Granted
Autoinjectors having advanced release and sound features
AssigneeBattelle Memorial Institute
InventorsWilliam G. Atterbury, Steve Madland, Adam Fox, Steven E. Huckaby, Jake Pyzza
Life of this patent
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Abstract
Autoinjectors and methods of injection are described that feature release mechanisms and/or end-of-dose sound which can operate in conjunction with a powered plunger to efficiently inject a controlled dose from a syringe.
Claims9
An autoinjector comprising:
- an activation sleeve which is rotationally keyed to a housing and is adapted to slide axially within the housing,
- a sleeve spring that applies an axial force between the housing and the activation sleeve;
- a locking collar that is secured axially and can rotate within the housing and is adapted to rotate as the activation sleeve is pushed or allowed to extend;
- nut sectors that are rotated by rotation of the locking collar and are captured axially between the locking collar and an end cap;
- a nut cap which secures the nut sectors and supports one end of a drive spring;
- and
- the end cap that engages with features on the housing and is locked to the housing with a cap lock.
4 more elements
Dependencies are inferred from the claim text.