Insulin Patch Pump Retention Frame for Flexible Infusion Sites
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Solution Overview
Problem
Existing insulin delivery systems, such as 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 that allows for multiple infusion site options and secure attachment methods, including vertical snapping, horizontal sliding, and quarter-turn cleat mechanisms, ensuring stable and accurate medicament delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a patch pump is worn directly on the injection site, then no tubing is required and the device is compact, but the pump lacks flexibility in infusion site options
Solution Approach 1:
The device is divided into separate components: a retention frame with adhesive patch that can be applied to the skin, and a pump unit that can be attached or detached. This segmentation allows the infusion site (retention frame) to be separated from the pump, enabling flexibility in site selection while maintaining a compact pump design.
Solution Approach 2:
A retention frame serves as an intermediary component between the pump and the skin. This frame can be permanently attached to the skin via adhesive patch, while the pump attaches to the frame, providing a flexible interface that enables multiple infusion site options without requiring the pump itself to be in direct contact with each potential site.
2Reliability
If simple attachment methods are used, then the device is easy to apply, but the pump may become dislodged leading to delivery inaccuracies
Solution Approach 1:
The attachment mechanism incorporates dynamic elements such as snap-fit connections that can be easily engaged and disengaged. The retention frame includes features like protrusions that snap into recesses in the pump, providing secure attachment through simple mechanical actions that are easy to operate but ensure reliable, dislodgement-resistant connection.
Solution Approach 2:
The retention frame includes a curved or contoured adhesive patch that conforms to the body's surface, enhancing attachment security. The curved design of the frame and its components work together to create a stable, multi-point attachment system that is both secure and easy to apply.
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.