Occluding Device with Self-Expanding Frame and Anchoring
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Solution Overview
Problem
Existing occluding devices for body vessels, such as embolization coils, require multiple coils for effective occlusion and are prone to migration, with no simple method for repositioning.
Innovation Solution
A single occluding device with an expandable frame and anchoring components that self-expand to engage the vessel wall, reducing migration and allowing for easy positioning and potential repositioning, using materials like small intestinal submucosa or synthetic fibers for occlusion and anchoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple embolization coils are used to occlude the body vessel, then the occlusion effectiveness is improved, but the device complexity and risk of migration increase
Solution Approach 1:
The patent combines multiple coils into a single integrated occluding device with a unified frame structure. The frame supports an occluding portion that can provide the occlusion effectiveness of multiple coils while maintaining a single device configuration, thereby reducing complexity and migration risk.
Solution Approach 2:
The occluding device is segmented into distinct functional components: a frame structure, an occluding portion (which can be a mesh or fabric), and anchoring components. This segmentation allows each part to perform its specific function optimally while working together as a single integrated device.
2Reliability
If multiple embolization coils are used for occlusion, then the occlusion effectiveness is improved, but the ease of operation deteriorates due to difficulty in positioning and repositioning
Solution Approach 1:
The patent introduces a coupling component as an intermediary element that connects the occluding device to a delivery catheter. This coupling facilitates easy positioning and potential repositioning of the device by providing a mechanical interface that can be engaged and disengaged from the delivery system.
3Stability of the object's composition
If anchoring components are added to reduce migration, then the stability is improved, but the device complexity increases
Solution Approach 1:
The anchoring components are placed locally at specific positions on the frame structure where they are most effective for preventing migration. This localized approach provides stability without requiring complex anchoring mechanisms throughout the entire device, thereby minimizing overall complexity.
4Ease of operation
If a single occluding device is used instead of multiple coils, then the ease of operation is improved, but the occlusion effectiveness may deteriorate
Solution Approach 1:
The occluding portion of the device uses composite structures such as mesh or fabric materials that provide effective occlusion. These composite materials can be engineered to have appropriate porosity, strength, and flexibility to ensure effective vessel occlusion while maintaining device simplicity.
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 device effectively occludes body vessels with reduced risk of migration and simplifies the occlusion process, allowing for both permanent and temporary occlusion with minimal trauma to vessel walls.
Implementation Method 1
The expandable body is configured to self-expand in the open state
Implementation Method 2
The anchoring component is configured to engage the occluding device within a body vessel for reducing migration of the device
Implementation Method 3
The expandable balloon has an open end that has an opening to receive fluid in the balloon in the open state for occlusion within the body vessel
Implementation Method 4
a compressible foam body for occlusion within the body vessel
Data Source
AI summary
An occluding device for occlusion within a body vessel is disclosed. The device comprises an expandable frame having an occluding portion disposed within a closure area of the frame. An anchoring component is attached to the frame to engage the body vessel. A coupling is attached to the frame for repositioning the device.