Medicament Delivery Delay Mechanism for Complete Dose Ejection
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Solution Overview
Problem
Medicament delivery systems face challenges in ensuring complete dose delivery due to dimensional tolerances, making it difficult to accurately indicate the end of dose or withdraw the needle before the actual completion of the dose.
Innovation Solution
A medicament delivery system with a delay mechanism that activates prior to the completion of medicament delivery, ensuring that all the medicament is ejected from the container before activating subsequent subsystems or operations, such as needle withdrawal or end-of-dose indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a medicament delivery system operates without a delay mechanism, then the device structure is simpler and operation is faster, but the end-of-dose indication and needle withdrawal may occur prematurely before complete dose delivery
Solution Approach 1:
The delay mechanism is activated in advance (prior to completion of medicament delivery) to prepare for the subsequent end-of-dose indication and needle withdrawal operations. This preliminary activation ensures that the delay function is ready to operate when needed, guaranteeing complete dose delivery before triggering downstream operations while maintaining a relatively simple device structure.
2Reliability
If a delay mechanism is added to ensure complete dose delivery, then dose delivery reliability is improved, but the device complexity increases
Solution Approach 1:
The delay mechanism serves as an intermediary component between the medicament delivery process and the downstream operations (end-of-dose indication, needle withdrawal). It mediates the timing between these processes, ensuring that the complete dose is delivered before triggering subsequent operations, thereby improving reliability while adding only the necessary minimal complexity.
3Productivity
If the needle is withdrawn immediately after activation command, then the operation speed is faster, but the complete dose may not be delivered
Solution Approach 1:
The delay mechanism is activated in advance to ensure that the complete dose delivery process is allowed to finish before the needle withdrawal operation is triggered. This preliminary activation maintains fast operation speed while guaranteeing dose completion, as the delay mechanism automatically manages the timing without requiring additional user actions.
Data Source
AI summary
A medicament delivery system, including a medicament container and a delay mechanism that is activated prior to completion of medicament delivery from the medicament container. The delay mechanism automatically activates a subsystem or initiates an operation subsequent to the completion of the medicament delivery.