Keyed connectors

Abstract

A set of at least two drug delivery devices includes a first drug delivery device and a second drug delivery device, The first and second drug delivery devices each include a first set of mutual members that are identical, and the first drug delivery device and the second drug delivery device each include a second set of distinguishing members that differ. The first drug delivery device includes a first connection device for attaching a first dispensing unit to the first drug delivery device and the second drug delivery device includes second connection device for attaching a second dispensing unit to the second drug delivery device, the first and second connection devices differ from each other so that the second dispensing unit is not attachable to the first connection device and the first dispensing unit is not attachable to the second connection device.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to European Patent Application No. 21167293.6 filed on Apr. 7, 2021, European Patent Application No. 21181883.6 filed on Jun. 25, 2021, European Patent Application No. 21181887.7 filed on Jun. 25, 2021, and European Patent Application No. 21184545.8 filed on Jul. 8, 2021, the contents of each of which are hereby incorporated herein by reference in their entirety.BACKGROUNDField of the Invention[0002]The invention relates to a set of at least two drug delivery devices comprising at least a first injection device and a second injection device. Furthermore, the invention relates to a set of dispensing units comprising a first dispensing unit and a second dispensing unit, each dispensing unit configured to have a drug compartment containing a drug to be delivered by one of the drug delivery devices of the sets.Background Information[0003]To date, conventional drug delivery devices which can be used by medically...

AI Technical Summary

Benefits of technology

This patent is about a drug delivery device with two dispensing units and two connection devices. The two connection devices differ from each other, so that the two dispensing units are not compatible with each other. This feature ensures that only the right combination of dispensing unit and drug delivery device can be connected, which prevents a patient from inadvertently ejecting an incorrect dose. This design allows for easy recognition of the dispensing unit and the drug contained within it, and also ensures that it is only the right combination that can be used with the drug delivery device.

Problems solved by technology

This means that they cannot simply be exchanged for parts of the same or similar function in the respective other drug delivery device without the function being compromised in one way or another.

To make things worse, some patients can further suffer from poor eyesight or the like such that it is difficult for them to distinguish their different drug delivery devices purely visually.

It has shown that if threads of different pitches were provided, it sometimes was not enough to ensure that a dispensing unit of a first kind could only be connected to the first drug delivery device and not to the second drug delivery device.

Nevertheless, this can not necessarily mean that the exact same medication is dispensed out of both the first and the second drug delivery device.

Nevertheless, even if the two dispensing units comprise the same type of connection devices they can be designed such that the first dispensing unit can only be connected to the first drug delivery device and the second dispensing unit can only be connected to the second drug delivery device.

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