Implantable Occluder Guide Wire Lumen and Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vascular occlusion devices lack efficient deployment procedures due to their structure, which prevents them from being delivered over a guide wire, leading to less effective occlusion of vessels.
Innovation Solution
An implantable medical device with an expandable frame member and a cannula element, including a sealing mechanism, allows for the device to be introduced over a guide wire, ensuring efficient occlusion by sealing the lumen and preventing fluid flow once deployed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional occlusion devices are delivered without guide wire assistance, then the device structure remains simple, but the deployment procedure becomes less efficient
Solution Approach 1:
The device incorporates a guide wire lumen nested within the frame structure, allowing the guide wire to pass through the device during delivery. This nested configuration enables guide wire assistance without substantially increasing the external device dimensions, resolving the contradiction between deployment efficiency and device complexity
Solution Approach 2:
The guide wire lumen acts as an intermediary structure that facilitates the interaction between the guide wire and the occlusion device. By providing a dedicated pathway for the guide wire, the device enables more efficient deployment procedures while maintaining a relatively simple overall structure
2Ease of operation
If the lumen is left open for guide wire passage, then the guide wire can be easily introduced, but fluid leakage occurs through the lumen after deployment
Solution Approach 1:
The sealing element is designed to be dynamic, transitioning from an open state during delivery that allows guide wire passage to a closed state after deployment that prevents fluid leakage. This dynamic behavior resolves the contradiction by providing ease of operation during introduction while ensuring reliability during occlusion
Solution Approach 2:
The sealing element is positioned and configured in advance to seal the lumen after the guide wire is removed. This preliminary preparation ensures that once the guide wire is introduced and the device deployed, the lumen automatically seals to prevent fluid leakage, maintaining both ease of guide wire introduction and occlusion effectiveness
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 vessels by allowing deployment over a guide wire, ensuring complete or partial obstruction and preventing fluid leakage, enhancing the efficiency of vascular occlusion procedures.
Implementation Method 1
one of the cannula element and the dilator tip is provided with a sealing element for sealing one of the first lumen and the second lumen
Data Source
AI summary
An occlusion device (10) includes a cannula (24), a dilator tip (20) fixed to the cannula and a frame member formed of an occlusion member (28) and a sleeve (30). The occlusion member (28) is covered with occlusion material (26). The cannula (24) is in the form of a tube having a lumen (25) passing therethrough. The dilator tip (20) also has a lumen therethrough and a valve (32). The arrangement is such that the occluder (10) can be delivered by an over the wire method using a guide wire, whereupon the cannula and dilator tip remain in the patient as part of the occluder assembly (10).