Infusion Set Insertion Device Pull Handle Release Button Mechanism
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Solution Overview
Problem
Current infusion set insertion devices face difficulties in loading the infusion set due to the pull handle mechanism, which can lead to improper seating and dislodging of the device, making it challenging for users to correctly deploy the infusion set.
Innovation Solution
The insertion device features a barrel with a pull handle and a release button, allowing the pull handle to move from a cocked to an advanced position, with radially opposed trigger buttons to maintain and release the cocked position, and a concave outer surface to prevent accidental actuation, facilitating easier handling and secure loading of the infusion set.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pull handle mechanism is used to cock and release the spring, then the insertion device can be operated manually, but the user cannot properly load the infusion set and may accidentally dislodge it
Solution Approach 1:
The device separates the loading function from the release function by introducing a distinct release button mechanism. The infusion set cavity is designed to receive and secure the infusion set independently, while the release button (separate from the pull handle) controls the release mechanism. This segmentation prevents the user from accidentally dislodging the infusion set while loading, as the release function is isolated to a specific button action rather than being integrated with the pull handle used for loading.
2Device complexity
If the pull handle is used for both cocking the spring and releasing the infusion set, then the device structure is simplified, but the user may hold the pull handle in the release position manually during loading, preventing proper seating
Solution Approach 1:
The release function is extracted from the pull handle mechanism and assigned to a separate release button. This allows the pull handle to be dedicated solely to the cocking and insertion action, while the release button independently controls the release of the infusion set. The extraction of the release function resolves the conflict between structural simplicity and operational ease, as the separated button provides clear visual and tactile feedback for the release action without adding significant complexity.
3Productivity
If the pull handle is depressed by handling or placing on a flat surface, then the device can be activated, but the infusion set may be dislodged from the properly loaded position
Solution Approach 1:
The device incorporates a safety mechanism that requires a specific preliminary action (pressing the release button) before the infusion set can be released. The release button is positioned and designed to require deliberate user interaction, preventing accidental activation from handling or placement. This preliminary action ensures that the infusion set remains securely held in the cavity during loading and positioning, and only releases when the user intentionally activates the release button after proper loading is confirmed.
Data Source
AI summary
An infusion set insertion device and method of use with an insertion device for an infusion set having an infusion set body including: a barrel defining a pull handle cavity; a pull handle slideably disposed in the pull handle cavity, the pull handle having an outer surface and defining an infusion set cavity and a release button cavity, the pull handle having a cocked position and an advanced position relative to the barrel; a release button slideably disposed in the release button cavity, the release button having a loaded position and a released position relative to the pull handle; and a driver operable to move the pull handle from the cocked position to the advanced position; wherein the release button extends a first axial distance beyond the outer surface when in the loaded position and extends a second axial distance into the infusion set cavity when in the released position.