Fluid Channeling Compartment for Sensor Insertion Sites

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Solution Overview

Problem

Glucose monitoring systems face issues with blood pooling at the sensor insertion site, which can interfere with sensor functionality and hinder wound healing, due to the disturbance of tissues and blood vessels by the sharp introducer.

Innovation Solution

A device with channeling compartments containing absorbent material is used to draw and retain biological fluids away from the insertion site, minimizing interference with sensor signals and promoting faster wound healing by guiding fluid flow and absorption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a sharp introducer is used to insert the sensor through the skin, then the sensor can be properly positioned to detect analyte levels, but blood pooling occurs at the insertion site which interferes with sensor functionality and delays wound healing

Engineering Contradiction:

Improvesensor functionalityVSAvoidblood pooling

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and removes blood from the insertion site using a separate blood removal device. The device includes a blood removal mechanism that actively draws blood away from the sensor insertion area, preventing blood pooling that would otherwise interfere with sensor functionality and delay wound healing.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an intermediary blood removal device that acts as a mediator between the insertion site and the external environment. This device includes absorbent material and a blood removal mechanism that intercepts blood before it can pool around the sensor, effectively managing the harmful byproduct of the insertion process.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the sensor insertion site is located near capillary vessels, then the sensor can be inserted, but more blood is drawn out which increases interference with sensor signals

Engineering Contradiction:

Improvesensor insertionVSAvoidsensor signal accuracy

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The patent applies preliminary action by removing blood from the insertion site immediately after sensor insertion. The blood removal device is positioned and activated right after the sensor is inserted, preventing blood from accumulating and interfering with sensor signals before the measurement process begins.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent converts the harmful effect of blood drawing (which occurs naturally during insertion near capillaries) into a manageable process. By actively removing blood through the blood removal device, the system transforms the harmful byproduct into a controlled process that actually benefits sensor performance by eliminating signal interference.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Object-affected harmful factors

If absorbent material is used to wick blood away from the insertion site, then blood pooling is minimized and wound healing is promoted, but the device complexity increases

Engineering Contradiction:

Improveblood poolingVSAvoiddevice structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges the blood removal function with the existing sensor insertion device. The absorbent material and blood removal mechanism are integrated into the introducer or transmitter housing, combining multiple functions (sensor insertion, blood removal, and wound care) into a single unified device rather than requiring separate components.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent applies self-service by using passive absorbent material that automatically wicks blood away from the insertion site through capillary action. The absorbent material requires no external power source or active control, allowing the device to manage blood pooling autonomously through its inherent material properties.

Inventive Principle:

Principle #25Self-service

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

The solution effectively minimizes blood pooling and interference with sensor functionality, ensuring accurate data and faster wound healing by using absorbent materials to wick away fluids from the insertion site, thus maintaining a clean area for the sensor and reducing the likelihood of blood clots.

Implementation Method 1

A device with channeling compartments containing absorbent material is used to draw and retain biological fluids away from the insertion site

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Data Source

PatentUS8880138B2Device for channeling fluid and methods of use

Publication Date: 2014.11.04 ABBOTT DIABETES CARE INC

AI summary

Method and apparatus for channeling fluid away from an insertion site having a channel guiding the fluid flow from the insertion site, and a channeling compartment containing absorbent material to wick the fluid such as blood away from the insertion site is provided.