Infusion Pump Retention Assembly With Socket Alignment and Air Channels
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Solution Overview
Problem
Existing portable drug delivery devices suffer from malfunctions, size, weight, and cost challenges, and require frequent administration due to poor bioavailability and pharmacokinetic factors of certain medicines, necessitating a wearable device for controlled drug delivery.
Innovation Solution
A retention assembly for an ambulatory infusion pump assembly featuring an adhesive pad with a socket and alignment projections for secure attachment, combined with a dispensing assembly using micropenetrators and a mechanical actuation system for controlled drug delivery, potentially including a magnetically held securement body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If portable drug delivery devices are designed to be compact and wearable, then patient convenience and portability are improved, but device complexity and malfunction rate increase
Solution Approach 1:
The device is divided into separate modular components including a dispensing assembly, a retention assembly with socket, and a mechanical actuation assembly. This segmentation allows each component to be optimized independently for reliability while maintaining overall compactness and wearability.
Solution Approach 2:
The retention assembly features a socket that receives and secures the dispensing assembly within its structure. The mechanical actuation assembly is integrated into the housing, with components nested within each other to minimize overall device volume while maintaining structural integrity and reliability.
2Volume of moving object
If the device size is reduced for portability, then wearability is improved, but manufacturing precision and assembly difficulty increase
Solution Approach 1:
By segmenting the device into modular assemblies with standardized interfaces, the patent reduces the need for ultra-precise monolithic manufacturing. Each module can be manufactured separately with standard tolerances and then assembled using the socket-retention mechanism.
Solution Approach 2:
The socket and dispensing assembly are designed with complementary geometric features including alignment projections and recesses that guide precise positioning during assembly. This equipotential design ensures that components self-align during assembly, reducing the need for post-assembly adjustments.
3Ease of manufacture
If traditional adhesive methods are used for skin attachment, then ease of manufacture is maintained, but skin irritation and discomfort increase
Solution Approach 1:
The attachment function is segmented from the main device body into a separate retention assembly with an adhesive pad. This allows the adhesive material to be optimized specifically for skin compatibility while the main device can be manufactured separately, maintaining ease of manufacture while reducing skin irritation.
Solution Approach 2:
The adhesive pad material composition and properties can be specifically tailored to reduce skin irritation while maintaining effective attachment. The adhesive layer thickness, composition, and backing material can be optimized independently of the device manufacturing process.
Data Source
AI summary
A retention assembly for an ambulatory infusion pump assembly may comprise an adhesive pad including a central aperture and at least one protruding portion extending from a periphery of the adhesive pad. The retention assembly may further comprise a socket coupled to the adhesive pad. The socket may comprise a base portion with a socket aperture aligned with the central aperture. The socket may further comprise a wall extending from a periphery of the base portion. An inner surface of the wall may have a recess defined therein. The socket may further comprise at least one clip. The socket may further comprise at least one alignment projection extending from the base portion. The socket may further comprise at least one air channel recessed into the base plate extending from socket aperture to the periphery of the base portion.