Vascular Closure Device with Reverse Bends
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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 discs during subsequent medical procedures, which can complicate and potentially disrupt the sealing function.
Innovation Solution
A medical device with a symmetrical design featuring inner and outer reverse bends, deployed using a delivery system with a catheter and delivery cable, that secures the septum primum and septum secundum together without braided-web discs, allowing for efficient closure and reduced material implantation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional braided-web closure devices with discs are used to close PFO, then effective closure is achieved, but navigation during future procedures becomes difficult
Solution Approach 1:
The invention extracts and removes the problematic braided-web discs from the closure device design. By eliminating these discs while retaining the essential closure function through alternative means (such as a different device architecture that secures septal tissue without requiring large anchoring discs), the patent resolves the contradiction by maintaining closure effectiveness while eliminating the obstacle to future procedural navigation.
2Strength
If braided-web discs are used to anchor the closure device, then secure anchoring is achieved, but future access to the septal wall is blocked
Solution Approach 1:
The invention removes the braided-web anchoring discs that provide strong anchoring but block future access. By extracting this specific anchoring mechanism and replacing it with an alternative approach that achieves sufficient anchoring without large disc structures, the patent maintains anchoring strength while preserving adaptability for future septal wall access.
Solution Approach 2:
The invention segments the anchoring function from the disc structure. By separating the anchoring capability from the large braided-web disc configuration and implementing it through a different structural approach (such as localized tissue engagement or a streamlined anchor mechanism), the patent achieves secure anchoring without creating a barrier to future procedures.
3Reliability
If conventional closure devices with extensive material are used, then reliable closure is achieved, but device complexity and material implantation increase
Solution Approach 1:
The invention extracts and eliminates the complex braided-web disc structures from the closure device. By removing these extensive material components and replacing them with a simplified device architecture that achieves closure through alternative mechanisms (such as direct tissue engagement or a streamlined structure), the patent maintains closure reliability while significantly reducing device complexity and material implantation.
Data Source
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AI summary
A medical device includes a first end, a second end, and a central segment proximate a middle of the medical device and about which the medical device is symmetrical. The medical device also includes a pair of inner reverse bends spaced from the central segment by a first body plane extending from the central segment to the pair of inner reverse bends in a first longitudinal direction, and a pair of outer reverse bends. The outer reverse bends are spaced from the pair of inner reverse bends by a second body plane extending from the pair of inner reverse bends to the pair of outer reverse bends in a second, opposite longitudinal direction, and the outer reverse bends are spaced from the first and second ends of the medical device by a third body plane extending in the first direction from the outer reverse bends to the first and second ends.