Insulin Patch Pump Retention Frame for Flexible Infusion Sites
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Solution Overview
Problem
Existing insulin delivery systems, particularly patch pumps, lack flexibility in infusion site options and secure attachment mechanisms, leading to potential dislodging and delivery inaccuracies.
Innovation Solution
A user-wearable patch pump system with a retention frame and adhesive patch, featuring various attachment methods such as vertical snapping, horizontal sliding, and quarter-turn cleats, ensuring secure attachment and flexible infusion site options through cannula or tubing configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a patch pump is worn directly on the skin under clothing, then portability and continuous delivery are improved, but secure attachment and prevention of dislodging become problematic
Solution Approach 1:
The patent combines the pump device with a retention frame and adhesive patch into an integrated assembly. The pump is secured within the retention frame which is itself attached to the adhesive patch, creating a unified wearable unit that maintains both portability and secure attachment.
Solution Approach 2:
The adhesive patch is applied to the skin surface beforehand, creating a prepared base for subsequent pump attachment. This preliminary action ensures that when the pump is positioned, it adheres securely to the skin through the pre-applied adhesive layer.
2Device complexity
If the pump is situated directly on the injection site, then tubing requirements are eliminated, but flexibility in infusion site options is reduced
Solution Approach 1:
The system separates the pump unit from the infusion site through the use of a retention frame and adhesive patch assembly. This segmentation allows the pump to be positioned at one location while the infusion cannula can be inserted at a different site, providing flexibility in site selection.
Solution Approach 2:
The retention frame acts as an intermediary between the pump and the skin surface. It provides a mounting structure that allows the pump to be secured while accommodating different cannula insertion positions, thus enabling versatile infusion site options.
3Reliability
If multiple attachment methods are provided (vertical snapping, horizontal sliding, quarter-turn cleats), then secure attachment and alignment are improved, but device complexity increases
Solution Approach 1:
The retention frame incorporates multiple attachment mechanisms that can engage in different orientations (vertical snapping, horizontal sliding, quarter-turn cleats). These dynamic engagement options allow the pump to be securely attached through various motion paths, enhancing reliability while managing complexity through modular design.
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
Provides secure, accurate, and flexible insulin delivery by ensuring the pump remains attached and aligned with the infusion site, reducing dislodging and enhancing delivery precision.
Implementation Method 1
an adhesive patch configured to be attached to the user's body
Data Source
AI summary
A user-wearable patch pump system for delivery of insulin or other medicament can include a pump and an attachment portion that attaches the pump to a user's body. The pump can include a drive unit and a disposable cartridge containing a medicament with the drive unit configured to cause the pump to deliver the medicament in the cartridge to the user. The attachment portion can include a retention frame configured to selectively retain the pump therein and an adhesive patch configured to be attached to the user's body. The pump can be selectively attached to the retention frame and used to deliver medicament either through a cannula to an infusion site directly beneath the retention frame or through tubing to an infusion site displaced from the retention frame.