Vascular Filter with Bow Skeleton for Emboli Blocking
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Solution Overview
Problem
Existing technologies fail to effectively prevent particulate emboli, such as blood clots, from entering and traveling through blood vessels, leading to potential ischemia and tissue damage.
Innovation Solution
An intra-vascular device with a filter and a skeleton structure that includes bows extending from a horizontal plane, allowing the filter to be positioned between blood vessels to block particles, with a design that includes a continuous wire or loop construction and a mesh with varying hole densities, and the ability to expand and contract for secure placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is inserted into a blood vessel to block particulate emboli, then the ability to prevent particles from passing through is improved, but the device complexity increases due to the need for skeleton structure, bows, and filter assembly
Solution Approach 1:
The device is divided into distinct functional segments: a filter portion with mesh structure for particle capture, a skeleton structure for structural support, and bows for positioning. This segmentation allows each component to be optimized independently while maintaining overall functionality.
Solution Approach 2:
The filter is positioned within and supported by the skeleton structure, which is in turn supported by the bows. This nested arrangement allows multiple functional elements to be integrated in a compact configuration, reducing overall device complexity while maintaining particle blocking capability.
2Stability of the object's composition
If the filter is designed with a skeleton and bows to secure positioning between blood vessels, then the stability of placement is improved, but the ease of operation during insertion and deployment deteriorates
Solution Approach 1:
The bows are designed to be flexible and adaptable during insertion, allowing the device to navigate through blood vessels. Once positioned, the bows expand or lock into place to provide stable support between the blood vessels, transitioning from a flexible insertion state to a stable deployed state.
Solution Approach 2:
The skeleton structure incorporates flexible elements that can bend and conform during insertion through the catheter, then maintain rigid positioning once deployed. This flexibility allows easy operation during insertion while providing stable placement during operation.
3Reliability
If the filter uses a mesh structure with varying hole densities to effectively block particles, then the particle filtration efficiency is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The mesh structure of the filter has varying hole densities in different regions, with tighter mesh in areas requiring higher filtration efficiency and more open mesh in areas where flow is less critical. This local variation in quality allows effective particle blocking while reducing overall manufacturing precision requirements compared to a uniformly fine mesh.
Data Source
AI summary
A device implantable into a blood vessel having a filter to prevent particles from passing into a blood vessel, and having bows extending from a horizontal plain of the device, such bows to hold such device in place in a blood vessel.