Inhaler Cap Opening Mechanism for Sterile Dose Access
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Solution Overview
Problem
Existing medicament delivery devices, particularly inhalers, often require complex user interactions and may not ensure proper sterility or ease of use, leading to reduced patient compliance and increased risk of contamination.
Innovation Solution
A dose delivery device with a mouthpiece, dose chamber, and a cap that includes an integral opening mechanism, where the cap guides the separation of a sealing mechanism to open the dose chamber upon removal, ensuring easy preparation and sterile handling, and a handle for ergonomic use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex sealing mechanism is used to ensure sterility, then reliability is improved, but device complexity increases
Solution Approach 1:
The sealing mechanism is divided into separate functional components: a cap assembly with integral opening mechanism, a barrier layer, and a seal. This segmentation allows each component to perform its specific function independently, simplifying the overall design while maintaining sterility assurance through modular construction.
Solution Approach 2:
The cap is pre-configured with an integral opening mechanism that automatically opens the seal when removed. This preliminary preparation eliminates the need for complex manual opening procedures, reducing operational complexity while ensuring reliable sterility through automated seal activation.
2Reliability
If multiple preparation steps are required, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The cap assembly integrates multiple functions into a single component: protection, sealing, and opening mechanism. When the cap is removed, it simultaneously opens the seal and exposes the dose chamber, merging multiple preparation steps into one simple user action while maintaining reliable preparation through integrated design.
Solution Approach 2:
The opening mechanism is designed to automatically open the seal when the cap is removed, without requiring additional manual intervention. This self-service feature simplifies user interaction while ensuring reliable preparation by automatically activating the dose chamber opening.
3Reliability
If the device requires protective covering, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The cap is pre-attached to the dose chamber assembly, providing continuous protection against contamination. When removed, it automatically opens the seal through its integral opening mechanism, enabling rapid access while maintaining reliability through pre-configured protective coverage.
Solution Approach 2:
The cap serves as an intermediary component that transitions the system from a protected closed state to an open accessible state. Its integral opening mechanism mediates between protection requirements and access speed by automatically activating the opening action during removal.
Data Source
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AI summary
Dose delivery device with partially or fully surrounding cover may be removed to open fluid communication with a dose chamber. The cover may allow an inhaler to be stored in sterile or otherwise in a controlled environment prior to use, and removal of the cover may automatically prepare the inhaler for use.