Vascular Closure Device with Coiled Extensions
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Solution Overview
Problem
Conventional medical devices for closing vascular abnormalities, such as patent foramen ovale (PFO), often require navigating through braided-web closure devices during subsequent procedures, which can complicate and impair the sealing function.
Innovation Solution
A medical device with a device body and extensions, featuring expandable cells and coiled ends, is deployed using a delivery system to secure vascular tissue, reducing the amount of implanted material and facilitating easier navigation during future procedures while maintaining effective closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a braided-web closure device is implanted to close PFO, then the sealing function is achieved, but subsequent navigation through the device becomes complex and may impair the sealing function
Solution Approach 1:
The invention extracts the essential sealing function from the complex braided-web structure and implements it through a simpler device with fewer elements. The new device achieves PFO closure through a minimal configuration of disc and extensions, removing the unnecessary complexity of traditional braided-web designs while maintaining effective sealing.
2Reliability
If a braided-web closure device is used, then PFO closure is achieved, but the amount of implanted material is increased
Solution Approach 1:
The invention removes excess material from the traditional braided-web design, retaining only the essential components needed for effective PFO closure. The simplified device uses minimal material while achieving the same therapeutic outcome, reducing the burden on the patient's body.
Solution Approach 2:
The device is segmented into distinct functional components (disc and extensions) that work together to achieve closure. This segmentation allows for optimized material distribution, using material only where necessary for sealing effectiveness rather than throughout an entire braided structure.
3Reliability
If conventional braided devices are implanted, then vascular abnormality closure is achieved, but procedural complexity increases for future interventions
Solution Approach 1:
By extracting the essential closure function from the complex braided structure, the new device creates a navigation-friendly profile. The simplified design with reduced material and fewer structural elements allows catheters and other devices to pass through more easily during future procedures while maintaining effective PFO 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 enables consistent and improved patient outcomes by reducing procedural complexity and maintaining the sealing effect, allowing for efficient closure of vascular abnormalities like PFO without the need to navigate through existing braided devices.
Implementation Method 1
At least some medical devices are formed from shape-memory material in a braided web configuration
Implementation Method 2
The first and second pluralities of extensions have coiled ends
Data Source
AI summary
Described herein is a medical device including a medical device including a device body and a plurality of extensions. The device body includes a first side, a second side, and a plurality of expandable cells. The plurality of expandable cells have a proximal edge and a distal edge. The plurality of expandable cells extends laterally between and connects the first and second sides. The plurality of extensions extend longitudinally from each of the first and second sides. A first plurality of extensions extend proximally from a proximal end of each side to beyond the proximal edge and a second plurality of extensions extend distally from a distal end of each side to beyond the distal edge. The first and second pluralities of extensions have coiled ends.