Auto-Injecting Medicament Delivery With End-of-Dose Feedback
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Solution Overview
Problem
Existing medicament delivery devices require multiple user actions and lack intuitive, ergonomic design, particularly for self-administration, and do not provide reliable confirmation of injection completion when used in locations where visibility is limited.
Innovation Solution
A medicament delivery device with a drive means, holding means, and feedback means that automatically expels medicament upon activation, providing audible, tactile, or visual confirmation through a signal generating member that interacts with the drive and holding means to indicate complete expulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device requires multiple user actions for activation, then the device can be controlled precisely, but the ease of operation deteriorates and user error risk increases
Solution Approach 1:
The drive means is pre-assembled and pre-loaded with medicament in a ready-to-use state. The holding means pre-positions the drive means in a pre-tensioned state, so that upon activation, the medicament is expelled automatically without requiring the user to perform multiple manual operations.
2Reliability
If the device provides no feedback on injection completion, then the device complexity is reduced, but the reliability of dose delivery deteriorates when visibility is limited
Solution Approach 1:
The feedback means generates an audible and/or tactile and/or visual signal that interacts with both the holding means and the drive means to indicate that the medicament has been completely expelled from the container, providing confirmation of injection completion to the user.
3Adaptability or versatility
If the device is designed for manual pressing activation, then the device can be used in various locations, but the ease of operation deteriorates when the user cannot see the injection site
Solution Approach 1:
The device is configured to automatically expel the medicament upon activation without requiring the user to continuously monitor or adjust the device during the injection process. The feedback means provides autonomous confirmation of completion, allowing the user to simply press the device against the injection site and release.
Data Source
AI summary
A medicament delivery device is presented having a drive configured to act on a medicament container for expelling a medicament; a holder configured to hold said drive in a pre-tensioned state; an activator configured to interact with said holder for releasing said drive from the pre-tensioned state; wherein the device further includes a feedback mechanism configured to interact both with said holder and with said drive for generating an audible and/or tactile and/or visual signal indicating that the medicament has been completely expelled.