Venous Nitinol Embolization Insert with Porous Mesh
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Solution Overview
Problem
Current embolization methods and devices face challenges in determining the degree of embolization, leading to insufficient or over-embolization, which can result in ineffective treatment, patient discomfort, or complications, and often require device retrieval and replacement.
Innovation Solution
A medical system with embolization inserts that allow for controlled blood flow restriction within a blood vessel, featuring a tubular member with a porous mesh structure and embolization material, such as spherical particles, to provide predetermined blood flow rates, eliminating the need for blood pressure monitoring during procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If blood pressure monitoring means is used to determine embolization condition, then embolization degree can be monitored, but the device cannot repair insufficient or over-embolization and requires retrieval and replacement
Solution Approach 1:
The embolization device incorporates adjustable components that allow dynamic modification of embolization degree during the procedure. The device can be adjusted to compensate for insufficient or over-embolization without requiring complete retrieval and replacement, transforming a static occlusion device into a dynamically adjustable one.
Solution Approach 2:
The device enables change in embolization parameters (such as embolization material distribution, flow restriction degree) during the procedure. By allowing parameter adjustment, the device can adapt to achieve proper embolization degree without requiring device removal and replacement.
2Productivity
If typical embolization methods are used, then embolization can be performed, but partial migration or mis-embolization occurs
Solution Approach 1:
The device incorporates monitoring capabilities that provide real-time feedback on embolization status and blood flow conditions. This feedback mechanism allows the operator to adjust the device position or parameters to prevent partial migration or mis-embolization, ensuring accurate target vessel occlusion.
Solution Approach 2:
The device utilizes radiopaque materials or contrast enhancement features that allow real-time visualization and tracking of the embolization device position and embolization material distribution. This imaging feedback enables precise positioning and prevents migration or mis-embolization.
3Reliability
If insufficient embolization occurs, then treatment effectiveness is reduced, but over-embolization causes patient discomfort or complications
Solution Approach 1:
The device allows controlled partial embolization with the ability to adjust the degree of embolization material delivery. This controlled partial action prevents both insufficient embolization (which would be ineffective) and excessive embolization (which would cause complications), achieving the optimal intermediate level.
Solution Approach 2:
The device incorporates self-regulating mechanisms that automatically adjust embolization material delivery based on monitored blood flow parameters. This self-service capability prevents both insufficient and excessive embolization by continuously adapting to maintain optimal embolization degree without requiring manual intervention.
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
Enables precise control of blood flow to achieve desired embolization, reducing the risk of insufficient or over-embolization, minimizing patient discomfort, and avoiding the need for device retrieval and replacement by allowing for fine-tuned blood flow restriction.
Implementation Method 1
The embolization insert includes a tubular member and an embolization material attached to the tubular member
Data Source
AI summary
A venous nitinol embolization insert for restricting blood flow includes a tubular member and an embolization material attached to the tubular member. The embolization insert provides a predetermined blood flow rate based on experimental data. A method of controlling restriction of blood flow to a targeted vascular site within a patient's body includes selecting an insert that provides a predetermined blood flow rate corresponding to a desired blood flow rate. The embolization insert is selected from a plurality of embolization inserts that provide varied blood flow rates.