Left Atrial Appendage Occluder with Segmented Anchor and Hinge
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Solution Overview
Problem
Current implantable devices for occluding the left atrial appendage are limited by variability in size and shape, and orientation issues, leading to inadequate performance in modifying the left atrial appendage anatomy.
Innovation Solution
A medical device system with a sheath and delivery catheter that includes an occluder and anchor portion, allowing independent deployment and repositioning, featuring a hinge mechanism and tissue growth member to promote endothelialization, facilitating precise placement and adaptation to varying anatomies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current implantable devices are used for occluding the left atrial appendage, then the basic occlusion function is achieved, but the device cannot adapt to variability in size and shape of the appendage, resulting in inadequate performance
Solution Approach 1:
The device is divided into multiple segments including an occluder portion and an anchor portion that can be independently positioned and deployed. The occluder portion can be adjusted to fit different appendage openings while the anchor portion secures the device in place, allowing adaptation to varying sizes and shapes.
Solution Approach 2:
The device incorporates movable and adjustable components that allow dynamic adaptation to the appendage anatomy. The occluder portion can be repositioned independently of the anchor portion, enabling the device to conform to different geometries and achieve reliable occlusion across varied anatomies.
2Ease of operation
If current implantable devices are used for occluding the left atrial appendage, then deployment is achieved, but orientation issues prevent successful deployment in varying anatomical configurations
Solution Approach 1:
The device separates the occluder portion from the anchor portion, allowing independent positioning and orientation adjustment. This segmentation enables the operator to optimize the orientation of each portion separately, facilitating successful deployment in varying anatomical configurations without compromising ease of operation.
Solution Approach 2:
The device allows repositioning in multiple dimensions, with the occluder portion capable of independent movement relative to the anchor portion. This multi-dimensional adjustability provides flexibility in orienting the device to match various appendage openings, improving both ease of deployment and adaptability to orientation variations.
3Reliability
If the occluder portion is deployed to occlude the appendage, then occlusion is achieved, but repositioning capability is limited
Solution Approach 1:
The device is segmented into an occluder portion and an anchor portion connected by a flexible element. This segmentation allows the occluder portion to be repositioned independently after initial deployment while maintaining attachment to the anchor portion, enabling correction of positioning errors without compromising occlusion reliability.
Solution Approach 2:
The device incorporates dynamic elements that allow post-deployment adjustment. The occluder portion can be repositioned along the delivery catheter while remaining connected to the anchor portion, providing flexibility to optimize occlusion position if initial placement is suboptimal, thereby maintaining reliability while improving repositioning capability.
Data Source
AI summary
Devices, methods and systems are provided for occluding an opening within the tissue of a body, such as a left atrial appendage. In one embodiment, a medical device coupled to a delivery catheter includes a fluid flow path that facilitates contrast fluid to pass through the delivery catheter and the medical device to a distal side thereof to provide imaging information as to the position of the medical device positioned in the opening, such as the left atrial appendage. In another embodiment, a medical device is coupled to a delivery catheter, the medical device including flaps adjacent a hub of the medical device that close-off a bore of the hub upon the catheter being detached from the medical device.