Drug delivery device with zero position adjustment feature

Abstract

A method of manufacturing a pen drug delivery device comprising the steps of (i) providing a drug delivery device comprising a dose indicator member adapted to move relative to a housing during dose setting and dose expelling corresponding to an axis of rotation, the indicator member having an initial position corresponding to no dose amount being set, (ii) arranging the indicator member in the initial rotational position, and (iii) providing on the housing and on the indicator member respectively a pair of zero markers having a predetermined rotational offset. By this arrangement the issue offinding the correct initial (zero) rotational position of the indicator member is addressed by providing corresponding and rotationally paired zero markings on the pen housing and the indicator member after the pen device has been assembled, this allowing the "true" initial position to be detected by image capture and subsequent image analysis.

Description

technical field [0001] The present invention generally relates to medical devices related to the generation, collection and storage of data. In particular embodiments, the present invention relates to devices, methods and systems for capturing drug delivery dose data in a reliable and efficient manner. Background technique [0002] In this disclosure, reference is primarily made to drug delivery devices comprising a threaded piston rod driven by a rotary drive member, such devices being used, for example, in the treatment of diabetes by delivering insulin, however, this is only Exemplary uses of the invention. [0003] Drug injection devices have greatly improved the lives of patients who must self-administer drugs and biologics. Drug injection devices can take a variety of forms including: simple disposable devices, which are simply ampoules with an expulsion mechanism; or they can be durable devices suitable for use with pre-filled cartridges. Regardless of their form a...

AI Technical Summary

Problems solved by technology

Since any given drug delivery device is manufactured with tolerances for each component, the graduated cylinder dose size indication accuracy will also potentially vary for each device, e.g., for any given set dose, the corresponding The scale markings (e.g., line markings) may not be perfectly aligned with the housing pointer structure, potentially causing inaccuracies when determining scale position and thus erroneous determination of the expelled dose size

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