Rotatable Infusion Base for Orientation Adjustment

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Solution Overview

Problem

Changing infusion sets to maintain continuous medication delivery can be difficult due to the challenge of correctly positioning the infusion set, especially when the orientation of the injection part varies, which affects user comfort and product performance.

Innovation Solution

A rotatable base system is introduced, allowing the connector to be guided into place for fluid communication between the infusion set and the base, with features such as a lower and upper base part that rotate relative to each other, snap hooks, guiding protrusions, and locking protrusions to secure the connector in a user-friendly position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the infusion set has a fixed orientation, then the connection process is simple, but the user cannot adjust the orientation for comfort during extended wear

Engineering Contradiction:

ImproveConnection process simplicityVSAvoidOrientation adjustment capability

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The base is designed with a rotatable upper base part that can rotate 360 degrees relative to the lower base part, allowing the infusion set to dynamically change orientation during wear while maintaining a secure connection. This dynamic structure resolves the contradiction by providing both ease of initial connection and adaptability for comfort adjustment.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If the infusion set has multiple orientations, then the user can adjust for comfort, but the connector positioning becomes complex

Engineering Contradiction:

ImproveOrientation adjustment capabilityVSAvoidConnector positioning difficulty

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The upper base part is pre-configured with a rotatable connection mechanism and guiding protrusions that automatically guide the connector into the correct position regardless of the base's rotational orientation. This preliminary configuration of the rotatable mechanism eliminates the need for complex manual positioning while maintaining multiple orientation capabilities.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If the upper base is rotatable, then orientation adjustment is enabled, but maintaining fluid seal integrity during rotation becomes challenging

Engineering Contradiction:

ImproveOrientation adjustment capabilityVSAvoidFluid seal integrity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The fluid connector tube is designed with flexible properties that allow it to maintain a continuous fluid seal between the cannula device and the base during rotation of the upper base part. The flexibility of the tube accommodates the rotational movement while preventing fluid leakage, thus maintaining seal integrity throughout the range of motion.

Inventive Principle:

Principle #30Flexible shells and thin films

Data Source

PatentUS11944775B2Rotatable infusion device and methods thereof

Publication Date: 2024.04.02 UNOMEDICAL AS

AI summary

An infusion set that has a base having an opening to receive a cannula device, the base having a lower base part and an upper base part, wherein the upper base part is coupled to the lower base part and is rotatable relative to the lower base part and a connector that has a fluid connector tube. The connector prevents the upper base from substantially rotating relative to the lower base and the fluid connector tube is in fluid connection with the cannula device when the connector is coupled to the base.