Hydration Sensing for Lubricious-Coated Flexible Medical Devices
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Solution Overview
Problem
Flexible elongated medical devices experience friction and navigation issues due to varying hydration states of lubricious coatings, leading to difficulties in reaching target anatomical locations and potential patient injury.
Innovation Solution
A system comprising a flexible elongated device with a lubricious layer and a sensor system to detect hydration indicators, allowing for evaluation of the lubricious layer's hydration condition to ensure optimal lubricity and prevent friction-related complications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lubricious coating is applied to the flexible elongated device, then friction during navigation is reduced, but the coating may become dehydrated and lose lubricity over time
Solution Approach 1:
The patent incorporates sensors to detect the hydration state of the lubricious coating in real-time and provides feedback to the control system. Based on this feedback, the system automatically adjusts hydration levels by delivering appropriate fluids to the coating, ensuring the device maintains optimal lubricity throughout the procedure.
Solution Approach 2:
The patent dynamically changes the hydration parameter of the lubricious coating by controlling the delivery of hydration fluids. The system adjusts the amount and timing of fluid delivery to maintain the coating within its optimal lubricity range, preventing both over-hydration and dehydration conditions.
2Ease of operation
If the lubricious layer is kept hydrated to maintain lubricity, then friction is reduced, but the device complexity increases due to monitoring and hydration delivery systems
Solution Approach 1:
The patent integrates the sensor system, control system, and hydration delivery mechanism into a unified integrated system. The sensors are embedded within or on the surface of the flexible elongated device, and the hydration delivery is combined with the device's existing fluid delivery infrastructure, minimizing additional complexity.
Solution Approach 2:
The system is designed to automatically monitor and regulate its own hydration status without requiring external intervention. The sensors detect hydration levels, the control system processes this information, and the hydration delivery mechanism automatically replenishes the coating as needed, creating a self-regulating system.
3Reliability
If real-time monitoring of the lubricious layer is implemented, then hydration condition is maintained, but the device complexity and cost increase
Solution Approach 1:
The patent implements monitoring at strategic key points rather than continuous monitoring throughout the entire device. Sensors are positioned at locations where hydration status is most critical and most easily measurable, providing sufficient monitoring data to maintain lubricity without requiring excessive sensor density.
Solution Approach 2:
The patent replaces complex mechanical sensing systems with optical or electrical sensing methods that are simpler and less invasive. For example, optical sensors that detect hydration through light transmission properties or electrical sensors that measure capacitance changes provide reliable hydration data with minimal mechanical complexity.
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 system enables precise control and navigation of flexible elongated devices by monitoring and maintaining the hydration state of the lubricious coating, reducing friction and preventing stick-slip behavior, thereby enhancing procedural safety and efficacy.
Implementation Method 1
a flexible elongated device with a lubricious layer that is hydrophilic in nature
Implementation Method 2
The sensor system may include one or more optical sensors configured to detect one or more optical properties of the flexible elongated device
Data Source
AI summary
A system may comprise a flexible elongated device including a flexible elongated body and a hydrophilic lubricious layer on the flexible elongated body. The system may also comprise a sensor system configured to detect a hydration indicator for the hydrophilic lubricious layer and a control system configured to evaluate the hydration indicator to determine a hydration condition of the hydrophilic lubricious layer.