Self-Expanding Vascular Occlusion Device with Loop Anchoring
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Solution Overview
Problem
Current blood vessel occlusion devices often require multiple deployments and can migrate back into parent arteries, failing to effectively block blood flow in a single instance while securely anchoring within the vessel.
Innovation Solution
Self-expanding occlusion devices with a support frame comprising multiple loops and a covering material, designed to expand from a constrained shape to occlude blood vessels, featuring a cosinusoidal shape and attachment features to prevent migration, and optionally including anchors for enhanced anchoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple deployment steps are used, then occlusion effectiveness is improved, but procedure time and complexity increase
Solution Approach 1:
The patent combines multiple deployment functions into a single integrated device structure. The self-expanding support frame with multiple loops and covering materials achieves both anchoring and occlusion in one deployment action, eliminating the need for separate deployment steps while maintaining effectiveness.
Solution Approach 2:
The device is pre-configured with the support frame and covering materials in specific configurations before deployment. The loops are pre-formed and the covering materials are pre-positioned, allowing the device to perform multiple functions simultaneously upon single deployment without requiring sequential assembly or adjustment steps.
2Ease of manufacture
If simple device structure is used, then ease of manufacture is improved, but migration resistance deteriorates
Solution Approach 1:
The device is segmented into distinct functional components: the support frame with multiple loops and the covering materials. This segmentation allows each component to be manufactured separately using standard techniques, maintaining ease of manufacture, while the combined structure provides enhanced migration resistance through the multi-loop anchoring mechanism.
Solution Approach 2:
The patent employs flexible covering materials that can be manufactured using conventional thin-film techniques. These flexible membranes are stretched over the loop structure, providing both ease of manufacture through standard fabrication processes and effective migration resistance through the mechanical constraint they provide on the loops.
3Productivity
If single deployment is used, then procedure time is reduced, but anchoring stability may deteriorate
Solution Approach 1:
The support frame incorporates multiple curved loops that provide distributed anchoring points around the vessel circumference. This curved, multi-loop geometry enables stable anchoring through a single deployment action, as the loops naturally conform to and engage the vessel wall at multiple locations simultaneously, eliminating the need for sequential anchoring steps.
Solution Approach 2:
The device combines different materials with complementary properties: the self-expanding support frame provides structural integrity and anchoring, while the covering materials provide occlusion and additional stability. This composite construction achieves both rapid single-deployment efficiency and long-term anchoring stability through the synergistic interaction of its material components.
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 devices achieve effective single-deployment occlusion with reduced risk of migration, ensuring complete vessel blockage and stable anchoring within the vessel, suitable for various vascular procedures.
Implementation Method 1
a self-expanding support frame having a longitudinal axis comprising a plurality of loops each having an orifice, the support frame being self-expandable from a constrained shape to an unconstrained shape
Data Source
Figure 1A~1C
Figure 2A~2D
Figure 3A~3D
AI summary
The present disclosure provides occlusion devices which comprise (a) a self-expanding support frame having a longitudinal axis comprising a plurality of loops each having an orifice, the support frame being self-expandable from a constrained shape to an unconstrained shape, and (b) a covering material covering an orifice of at least one of the loops. Also provided are assemblies and kits that contain such occlusion devices, and methods of delivering such occlusion devices to a patient.