Self-Expanding Ventricular Partitioning Device With Anchor
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Solution Overview
Problem
Current treatments for congestive heart failure, such as surgical procedures and mechanical assist devices, are inadequate in effectively isolating and addressing damaged tissue in the left ventricle, leading to inefficient blood pumping and valve regurgitation, which compromises cardiac output.
Innovation Solution
A self-expanding ventricular partitioning device with a disk-shaped portion and anchor is deployed to isolate damaged tissue in the left ventricle, allowing for healing and reducing pressure on the ventricular wall, which is delivered through a catheter or sheath and anchored at the left ventricular apex, enabling recapture and repositioning without balloon inflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical procedures are used to dissect and remove weakened ventricular wall portions, then heart volume is reduced, but the procedure is invasive and complex
Solution Approach 1:
The ventricular partitioning device divides the left ventricle into separate compartments by isolating damaged tissue portions, creating distinct functional segments within the heart chamber. This segmentation allows damaged areas to be separated from healthy tissue, improving healing outcomes while avoiding complex surgical dissection.
Solution Approach 2:
The ventricular partitioning device acts as an intermediary structure between damaged and healthy ventricular tissue. Rather than directly removing or dissecting damaged portions, the device introduces a partition that mediates the interaction between damaged and healthy tissue, allowing isolation and healing while maintaining overall ventricular function.
2Productivity
If mechanical assist devices are implanted, then cardiac output is supported, but the devices are complex and require extensive implantation procedures
Solution Approach 1:
The invention extracts only the essential function needed to improve cardiac output - isolating damaged tissue to enable natural healing and recovery. Rather than implanting complex mechanical assist devices that actively pump blood, the solution removes the obstacle (damaged tissue) preventing effective cardiac function, allowing the heart to maintain its natural pumping mechanism.
3Ease of operation
If the medical device is delivered through a catheter, then the procedure is less invasive, but the device must be compact for delivery
Solution Approach 1:
The ventricular partitioning device employs a nested structure where the partition elements are collapsed or folded within a delivery catheter. The device is contained within the catheter in a compact configuration, then deployed outward to expand into its functional partitioning structure once positioned in the left ventricle, enabling minimally invasive delivery while maintaining adequate device size for effective tissue isolation.
Solution Approach 2:
The device transitions from a static compact form during delivery to a dynamic expanded form during operation. The partitioning structure is designed to change configuration - compressed within the catheter for delivery, then expanded or deployed to create the necessary partitioning volume within the ventricle, allowing the same structure to satisfy both delivery and functional size requirements.
4Stability of the object's composition
If the device is anchored to the ventricular wall, then positioning stability is improved, but the anchor may cause tissue damage
Solution Approach 1:
The anchoring mechanism is designed with local quality considerations, where the anchor structure is optimized to engage with ventricular wall tissue in a way that provides sufficient mechanical stability for device positioning while minimizing tissue trauma. The anchor geometry and engagement method are specifically tailored to the local tissue characteristics of the ventricular wall at the deployment site.
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 effectively increases cardiac output by isolating and protecting damaged tissue, promoting healing and remodeling, and simplifies delivery and positioning with active anchoring, reducing the risk of embolization and improving patient outcomes.
Implementation Method 1
a disk-shaped portion having a distal end and a proximal end and configured to isolate a portion of a ventricular wall. The disk-shaped portion has a contracted state when constrained within a delivery device and a preset, expanded state when deployed from the delivery device
Data Source
AI summary
A ventricular partitioning device for isolating damaged tissue within a ventricle of the heart is disclosed. The ventricular partitioning device includes a disk-shaped portion configured to isolate a portion of a ventricular wall to facilitate remodeling of the ventricular wall. The device further includes an anchor configured to secure the device to the ventricular wall.