Infusion Device Carrier Protrusion Slot Guide
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Solution Overview
Problem
Conventional infusion pumps are susceptible to improvements, particularly in terms of user health and quality of life, as they face challenges in efficient medicament delivery and reduced frequency of subcutaneous access events.
Innovation Solution
The insertion assembly includes a frame with a tubular sidewall and a carrier that is axially movable within the frame, featuring protrusions that slide within slots to facilitate the insertion and retraction of needles and cannulas, ensuring precise and efficient medicament delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional infusion pumps are used, then basic medicament delivery is achieved, but the frequency of subcutaneous access events is high and user quality of life is reduced
Solution Approach 1:
The device enables self-service through automatic needle insertion and cannula replacement mechanisms. The carrier assembly automatically advances the needle through the skin and replaces cannulas without requiring manual intervention from the user, thereby maintaining reliable medicament delivery while improving user quality of life by reducing the frequency and manual effort of subcutaneous access events
2Manufacturing precision
If the carrier is made axially movable within the frame, then insertion precision is improved, but device complexity increases
Solution Approach 1:
The device is segmented into distinct functional modules: a frame, a carrier assembly that moves axially within the frame, and protrusions with slots. This segmentation allows the carrier to be independently actuated for precise needle insertion and cannula replacement while keeping the overall device manageable in complexity through modular design
3Stability of the object's composition
If protrusions with high height-to-width ratio are used, then carrier stability during movement is improved, but manufacturing difficulty increases
Solution Approach 1:
The protrusions feature localized quality variations with different height-to-width ratios at different positions. The slots in the protrusions have specific dimensional relationships (height substantially greater than width) that provide enhanced stability during carrier movement while the overall protrusion geometry is optimized for manufacturability through features like rounded corners and gradual transitions
Data Source
AI summary
The present technology includes, for example, an insertion assembly comprising a frame including a tubular sidewall defining an internal cavity and a slot extending longitudinally along a portion of the sidewall. The insertion assembly further comprises a medical device configured to be inserted into the user's skin and a carrier carrying the medical device and at least partially disposed within the internal cavity of the frame. The carrier can be axially movable within the frame from a first, cocked position to a second extended position proximate. The carrier can include a protrusion disposed within the slot of the frame and configured to slide within the slot when the carrier moves axially within the frame. A ratio of a height of the protrusion to a width of the protrusion is greater than 1.