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US 2026/0192057 A1Published application
Multiple Dosage Injector with Rack and Pinion Dosage System
AssigneeAntares Pharma, Inc.
InventorsPatrick Madsen, Hans Pflaumer, Kevin Swanson
Life of this patent
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Abstract
A dispensing mechanism for delivering a dosage of medicament including a housing, a push button, a crank arm that is slideably engageable with the push button, a ram, and a ratchet gear releasably engageable with the crank arm and ram, translation of the push button along an axis causing the crank arm to engage and rotate the ratchet gear which causes the ram to distally advance relative to the housing.
Claims16
A dispensing mechanism, comprising:
- a housing having a proximal-distal axis;
- a ram within the housing, movable in a distal direction;
- a user-operable push button moveable along the proximal-distal axis relative to the housing, the push button including a push button slot at a distal portion of the push button;
- a crank arm having a pawl tooth, a pivot point, and a crank arm engagement member slideably engageable with the push button slot such that movement of the push button causes the crank arm engagement member to move along the push button slot, causing rotation of the crank arm about the pivot point;
- and
- a ratchet gear having a first set of teeth releasably engageable with the pawl tooth and a second set of teeth releasably engageable with the ram,
- wherein engagement of the pawl tooth with the first set of teeth of the ratchet gear causes the ratchet gear to rotate, causing the ram to distally advance relative to the housing.
4 more elements
Dependencies are inferred from the claim text.