Epidermal Dressing Links Sensor to Cannula for Perivascular Monitoring
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Solution Overview
Problem
Current intravascular infusion systems face challenges in detecting unintended infusion of fluids into perivascular tissue, leading to infiltration or extravasation, which can cause skin reactions, nerve compression, and other complications due to improper cannula placement or excessive fluid flow rates.
Innovation Solution
An appliance that links an electromagnetic spectrum sensor with a cannula, featuring a fitting to retain and release the sensor for monitoring fluid in perivascular tissue, with a foundation to minimize engagement with the epidermis and distribute forces, allowing for continuous monitoring of fluid infusion and reducing tissue distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cannula is inserted through the epidermis for intravascular infusion, then fluid can be administered into the blood vessel, but the cannula may cause unintended infusion into perivascular tissue leading to infiltration or extravasation
Solution Approach 1:
The appliance is applied to the epidermis at the insertion site before or during cannula insertion, establishing a predetermined sensor position that will detect infiltration or extravasation if the cannula is improperly placed or if fluid leaks from the vessel
Solution Approach 2:
The electromagnetic spectrum sensor acts as an intermediary between the cannula infusion and the perivascular tissue, detecting the presence of infused fluid in the tissue through near-infrared signal changes that indicate infiltration or extravasation
2Productivity
If the infusion pump administers fluid at a high flow rate, then fluid administration efficiency is improved, but the risk of extravasation and tissue damage increases
Solution Approach 1:
The electromagnetic spectrum sensor provides real-time feedback on fluid presence in perivascular tissue by detecting changes in near-infrared signal transmission or reflection, allowing immediate detection of infiltration or extravasation even during high-rate infusion, enabling prompt intervention to prevent tissue damage
3Measurement precision
If the sensor is retained in continuous contact with the epidermis for monitoring, then detection sensitivity is improved, but tissue distortion and discomfort increase
Solution Approach 1:
The appliance separates the sensor from direct contact with the epidermis by positioning it on the appliance body that is attached to the epidermis, allowing the sensor to monitor perivascular tissue through the appliance structure without the sensor itself causing distortion or discomfort
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 appliance effectively diagnoses infiltration or extravasation by emitting and detecting near-infrared signals, providing real-time monitoring and reducing the risk of cannula displacement and tissue damage, thus minimizing complications associated with fluid infusion.
Implementation Method 1
The appliance effectively diagnoses infiltration or extravasation by emitting and detecting near-infrared signals
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3
AI summary
An epidermal dressing includes an appliance for linking an electromagnetic spectrum sensor with a cannula administering an intravascular infusate. The appliance includes a body and a fitting coupled to the body. The body is configured to space the connector from the epidermis. The fitting includes a first arrangement that is configured to retain the electromagnetic spectrum sensor for sensing the infusate in perivascular tissue, and a second arrangement that is configured to release the electromagnetic spectrum sensor from the first arrangement.