The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 2021
Filed:
Mar. 09, 2016
Amgen Inc., Thousand Oaks, CA (US);
Lawton Laurence, Phoenixville, PA (US);
Paul F. Bente, IV, Wayne, PA (US);
Mark A. Destefano, Collegeville, PA (US);
Ian P. Dardani, Radnor, PA (US);
Ian B. Hanson, Wayne, PA (US);
AMGEN INC., Thousand Oaks, CA (US);
Abstract
A drive mechanism () for use with a drug container () in a drug pump, the drug container () having a barrel () and a plunger seal (), including a tether, an electrical actuator () and a gear interface. Rotation of the gear interface is controlled by the actuator (). A gear assembly rotationally engages with the gear interface. The gear assembly includes a main gear and a regulating mechanism. Release of the tether is metered by the gear assembly through the regulating mechanism. A piston () is connected to the tether and is disposed in the barrel () and configured to translate axially within the container. A biasing member is disposed at least partially within the barrel () and is retained in an energized state between the piston () and drive housing, wherein the release of the tether controls the free expansion of the biasing member from its energized state and the axial translation of the piston ().