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. 06, 2021
Filed:
Jan. 23, 2019
Roche Diabetes Care, Inc., Indianapolis, IN (US);
Markus Lorenz, Karlsruhe, DE;
Roche Diabetes Care, Inc., Indianapolis, IN (US);
Abstract
A portable liquid drug delivery device has a reservoir part and a driving part, and the driving part has a drive that produces a torque. The reservoir part has a reservoir that retains liquid drug and an outlet port is in fluid communication with the reservoir. An engagement member has an inner thread that engages the thread of a piston rod in an engaged position and is disengaged from the thread of the piston rod in a disengaged position. The engagement member is prestressed in the disengaged position to thereby bias the engagement member toward the engaged position. The engagement member only converts the torque of the drive into a linear movement of the piston rod when the engagement member is in the engaged position. The piston is configured, upon the linear movement of the piston rod, to deliver the liquid drug to the outlet port.