Open-Ended Occlusion Clip for Uniform Left Atrial Appendage Closure
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Solution Overview
Problem
Existing occlusion devices struggle to effectively and efficiently occlude the left atrial appendage without causing damage or complications.
Innovation Solution
The development of an implantable open-ended occlusion clip with elongated occlusion and biasing arms, featuring a U-shaped section and tissue engaging surfaces, fabricated using titanium and potentially encapsulated in a fabric tube to promote tissue ingrowth, which can be deployed to securely occlude the left atrial appendage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing occlusion devices are used to occlude the left atrial appendage, then occlusion function is achieved, but tissue damage and complications occur due to non-uniform force distribution
Solution Approach 1:
The occlusion device is divided into two separate occlusion arms (first and second occlusion arms) that can independently engage the tissue. Each arm applies force separately, allowing for more uniform distribution of occlusion force across the tissue, thereby reducing localized tissue damage while maintaining effective occlusion.
Solution Approach 2:
The occlusion arms are designed with specific geometries and engagement surfaces that concentrate force only where needed at the tissue engagement points, while the biasing arms distribute the forcing mechanism separately. This localized force application ensures effective occlusion at the target site without causing unnecessary damage to surrounding tissues.
2Reliability
If existing occlusion devices are used, then occlusion is achieved, but deployment complexity and risk of complications increase
Solution Approach 1:
The device combines the occlusion function and the forcing mechanism into a single integrated structure where the first and second occlusion arms are coupled to first and second biasing arms respectively, with the biasing arms also coupled to each other. This unified design simplifies deployment by eliminating the need for separate forcing mechanisms, reducing procedural complexity and potential complications.
3Force
If traditional occlusion devices are used, then occlusion force is applied, but force distribution is non-uniform causing tissue damage
Solution Approach 1:
The occlusion device is divided into two separate occlusion arms (first and second occlusion arms) that can independently engage the tissue. Each arm applies force separately, allowing for more uniform distribution of occlusion force across the tissue, thereby reducing localized tissue damage while maintaining effective occlusion.
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 occlusion clip provides a secure and efficient means to occlude the left atrial appendage with uniform force distribution, minimizing damage and promoting tissue integration, while allowing for easy deployment and retention.
Implementation Method 1
a first elongated biasing arm coupled to a distal portion of the first elongated occlusion arm; a second elongated biasing arm coupled to a distal portion of the second elongated occlusion arm
Data Source
AI summary
An occlusion clip comprising: (a) a first elongated occlusion arm; (b) a second elongated occlusion arm; (c) a first elongated biasing arm coupled to a distal portion of the first elongated occlusion arm; (d) a second elongated biasing arm coupled to a distal portion of the second elongated biasing arm is coupled to a proximal portion of the second elongated biasing arm, where the first elongated occlusion arm extends parallel to the first elongated bias arm along a majority of its length, and where the second elongated occlusion arm extends parallel to the second elongated bias arm along a majority of its length.