Interseptal Occluder Membrane for Re-Crossable Septal Closure
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Solution Overview
Problem
Existing occlusion devices for septal defects do not allow for easy re-crossing after implantation, complicating subsequent medical procedures and are often complex to implement.
Innovation Solution
A re-crossable interseptal occluder device with a supporting structure and a membrane that can be elastically deformed to create a passage lumen for external devices, allowing for easy re-crossing and secure anchoring to the septum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional occlusion device is used to close a septal defect, then the defect is occluded, but re-crossing through the septum becomes impossible or highly complex
Solution Approach 1:
The membrane is designed to be dynamically deformable, transitioning from a closed occluding state to an open passage state. The membrane can be elastically deformed by external devices to create a passage lumen, allowing temporary opening for re-crossing procedures while maintaining occlusion during normal function
Solution Approach 2:
The device employs a flexible membrane as the occluding element that can be elastically deformed. This thin film structure allows the membrane to be pushed inward by external devices to create passages, then return to its original closed configuration, enabling repeated re-crossing procedures
2Adaptability or versatility
If existing re-crossable occluder designs are implemented, then re-crossing is possible, but the device structure becomes highly complex
Solution Approach 1:
The invention extracts the re-crossing function from complex mechanical mechanisms and implements it through the inherent elastic properties of the membrane material itself. The membrane's natural elasticity replaces complex springs, hinges, or actuation mechanisms found in prior art, significantly simplifying the device structure while maintaining re-crossing capability
Solution Approach 2:
The device utilizes changes in the membrane's physical parameters - specifically its elastic deformation under external force - to achieve passage creation. By leveraging the membrane's material properties rather than mechanical mechanisms, the device achieves re-crossing functionality with minimal structural complexity
3Ease of operation
If the membrane is made highly elastic to facilitate re-crossing, then passage creation is easier, but occlusion reliability may be compromised
Solution Approach 1:
The membrane is designed with sufficient elastic properties to allow temporary deformation for passage creation, but the elasticity is controlled to ensure the membrane returns to its original closed position. The elastic deformation is partial and temporary, not permanent, maintaining occlusion reliability while enabling ease of passage creation during re-crossing procedures
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 provides secure occlusion while enabling flexible re-crossing, simplifying subsequent medical procedures and reducing complexity in implantation.
Implementation Method 1
the membrane (8) when actively engaged by an external device (108) is elastically deformed to create a passage lumen (27) for the external device (108)
Implementation Method 2
a supporting structure (2) adapted to be anchored to a septum (7)
Data Source
AI summary
The present invention relates to an occluder device (1) comprising a supporting structure (2) said supporting structure (2) comprising a central portion (201) having a distal end (202) and a proximal end (203); said supporting structure (2) comprising distal branches (204) extending away from said distal end (202) of the central portion (201); said supporting structure (2) comprising proximal branches (205) extending away from said proximal end (203) of the central portion (201); said proximal and distal branches (204, 205) defining elastic hooked struts which are rotatable away from the central portion (201) to anchor a septum (7) of a heart (103); said occluder device (1) further comprising at least one membrane (8); said membrane (8) comprises a membrane body (11) connected to the distal or proximal branches (204; 205); when the branches (204, 205) are in the unfolded or lying position, said membrane (8) has a closed position where the membrane (8) is in a configuration which provides maximum occlusion to the supporting structure (2); wherein said membrane (8) comprises at least one slit (21); which, when actively engaged by an external device (108) the membrane (8) deforms the slit (21) which extends elastically, creating a passage lumen (27) for said external device (108).