Button Safety Cap with Snap Retention to Prevent Catheter Deployment
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Solution Overview
Problem
Existing catheter insertion devices in patch pumps risk accidental activation, leading to potential needle stick injuries and rendering the device unusable, especially during the process of filling the reservoir.
Innovation Solution
A button safety cap with a pull member, stabilizing arms, and a flexible snap feature is designed to prevent accidental activation of the catheter insertion device by securely covering the activation button until intentionally removed by the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the activation button is left exposed for easy access, then the ease of operation is improved, but the risk of accidental activation increases
Solution Approach 1:
A button safety cap is introduced as an intermediary component between the user and the activation button. The cap covers the button during storage and filling operations, preventing accidental activation. The cap includes a pull member that allows intentional removal when activation is desired, thus maintaining ease of operation while eliminating accidental activation risk.
2Reliability
If the button safety cap is securely attached to prevent accidental removal, then the reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
The button safety cap employs a dynamic attachment mechanism rather than a fixed one. The snap feature provides secure attachment during normal handling, while the pull member creates a defined release mechanism. This dynamic system ensures the cap remains reliably attached during storage and filling, but can be easily removed when needed by applying force to the pull member.
3Volume of moving object
If the patch pump is designed to be compact for portability, then the volume is reduced, but the device complexity increases due to additional safety mechanisms
Solution Approach 1:
The button safety cap is designed as a separate, modular component that can be attached to or removed from the patch pump. This segmentation allows the safety mechanism to be added without permanently increasing the core device volume. The cap's simple structure with a snap feature and pull member adds minimal complexity while providing essential protection.
4Stability of the object's composition
If the stabilizing arms are made rigid to prevent rotation, then the stability is improved, but the device complexity increases
Solution Approach 1:
The stabilizing arms utilize the flexibility of the button safety cap body rather than requiring separate rigid stabilizing components. The cap's material properties provide the necessary stability to prevent rotation during filling operations, eliminating the need for additional complex rigid stabilizing mechanisms and keeping the overall device complexity low.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The button safety cap effectively prevents accidental deployment of the catheter, ensuring user safety and maintaining the usability of the patch pump, while also providing a stable configuration for filling the reservoir.
Implementation Method 1
a flexible snap feature adapted to engage an activation button of the patch pump. The snap feature retains the button safety cap on the patch pump until a predetermined removal force is applied to the button safety cap.
Data Source
AI summary
A button safety cap for a patch pump or other fluid infusion device prevents accidental activation of an activation button of a catheter insertion device that, when pressed, moves from an undeployed position to a deployed position to introduce a cannula and/or a needle into a user's skin. The button safety cap includes a pull member and a stabilizing surface adapted to stabilize the patch pump or other fluid infusion device when oriented for filling, and to prevent rotation and/or translation of the button safety cap relative to at least one of the activation button and the patch pump or other fluid infusion device on which the button safety cap is assembled. The button safety cap has a flexible snap feature adapted to engage the activation button and retain the button safety cap on the activation button until a predetermined removal force is applied to the button safety cap.