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:
Apr. 19, 2022
Filed:
Jul. 14, 2018
Amgen Inc., Thousand Oaks, CA (US);
Mehran Mojarrad, Thousand Oaks, CA (US);
Scott Robert Gibson, Granada Hills, CA (US);
Adam Livingston, Oceanside, CA (US);
AMGEN INC., Thousand Oaks, CA (US);
Abstract
An insertion/retraction mechanism for a drug delivery device is disclosed. The insertion/retraction mechanism includes a retraction hub, an insertion hub, an insertion/retraction mechanism housing, and a dual torsion spring system. The retraction hub includes a first primary rotational stop and a second primary rotational stop extending radially inwardly from an inside surface. The insertion hub is disposed inside the retraction hub and comprises a first complementary rotational stop and a second complementary rotational stop extending radially outwardly from an outside surface. The dual torsion spring system causes the first primary rotational stop and the second primary rotational stop to selectively engage the first complementary rotational stop and the secondary rotational stop, respectively, and further causes the retraction hub to rotate relative to the insertion/retraction mechanism housing as the insertion/retraction mechanism moves between an initial position, an inserted position, and a retracted position.