Occlusion Device With Restricting Ring for Vessel Closure
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Solution Overview
Problem
Current vascular occlusion devices, such as inflatable balloons and embolization coils, are either temporary or require significant time for occlusion, posing risks and complexity due to the need for multiple devices and incomplete vessel closure.
Innovation Solution
A tubular expandable body with a restricting ring that collapses to define an expanded state for occlusion and a collapsed state for delivery or retrieval, using shape memory materials like Nitinol to ensure quick and effective vessel closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If embolization coils are used for permanent occlusion, then the occlusion is permanent and promotes blood clots or tissue growth, but it takes a significant period of time for sufficient clotting or tissue growth to fully occlude the body cavity
Solution Approach 1:
The occlusion device is divided into multiple functional segments: a tubular expandable body for structural support and positioning, a restricting ring for immediate lumen closure, and an embolization coil for permanent occlusion. This segmentation allows each component to perform its specific function optimally, with the restricting ring providing immediate occlusion and the coil ensuring permanent closure over time.
Solution Approach 2:
The restricting ring is positioned to collapse and close the lumen of the tubular expandable body before the embolization coil is fully deployed. This preliminary action by the restricting ring provides immediate occlusion of the body cavity, preventing blood flow while the embolization coil gradually takes effect and promotes clotting or tissue growth for permanent occlusion.
2Reliability
If multiple devices are used together (embolization coil with spider shaped vascular obstruction device), then the occlusion is more effective, but the device complexity increases and requires delivery of two or more separate devices
Solution Approach 1:
The patent combines multiple occlusion functions into a single integrated device. The tubular expandable body serves as the structural framework, the restricting ring provides immediate lumen closure, and the embolization coil ensures permanent occlusion. This merging of functions into one device eliminates the need for separate spider-shaped vascular obstruction devices and simplifies the delivery process while maintaining effective occlusion.
Solution Approach 2:
The occlusion device is designed with multi-functionality to perform multiple occlusion tasks simultaneously. The restricting ring provides immediate mechanical closure, the embolization coil promotes permanent occlusion through clotting and tissue growth, and the tubular expandable body maintains positioning and structural integrity. This universal design allows a single device to replace multiple specialized devices.
3Speed
If inflatable balloons are used for quick occlusion, then the occlusion is rapid, but the occlusion is temporary and requires repeated procedures
Solution Approach 1:
The restricting ring is designed to collapse and close the lumen immediately upon deployment, providing rapid occlusion similar to an inflatable balloon. However, unlike the temporary balloon occlusion, the restricting ring maintains continuous closure by collapsing the tubular expandable body, and the embolization coil gradually takes effect to provide permanent occlusion through clotting and tissue growth.
Solution Approach 2:
The occlusion device provides continuous occlusion action through the restricting ring that remains collapsed and closed, preventing blood flow continuously. The embolization coil continuously promotes clotting and tissue growth over time. This continuous action eliminates the need for repeated procedures required by temporary balloon occlusion, as the device maintains permanent closure.
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 provides a quick and reliable method for occluding body vessels, reducing the risk of injury and simplifying the occlusion process by using a single device that can be easily deployed and retrieved, while promoting tissue growth for permanent occlusion.
Implementation Method 1
A restricting ring is located around an exterior side of the tubular expandable body and collapses a portion of the tubular expandable body
Implementation Method 2
using shape memory materials like Nitinol to ensure quick and effective vessel closure
Data Source
AI summary
An occlusion device for occluding a body vessel is provided. The occlusion device has a tubular expandable body having an interior side and an exterior side. A restricting ring is located around the exterior side of the tubular expandable body and collapses a portion of the tubular expandable body. The occlusion device is configured to move between an expanded state for occlusion within a body vessel and a collapsed state for delivery or retrieval of the device, and the device is configured to open radially to define the expanded state and to collapse along the longitudinal axis to define the collapsed state. A delivery assembly for an occlusion device and a method of constructing an occlusion device are also disclosed.