Single-Chamber Prosthetic Valve Anchoring for Native Leaflet Preservation
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Solution Overview
Problem
Current prosthetic heart valve solutions often require full replacement of native valves, leading to reliance on the implanted valve and potential damage to native leaflet functionality, and are bulky and invasive, making delivery and positioning difficult, with existing solutions interfering with native valve functionality and causing unnecessary trauma.
Innovation Solution
A single-chamber anchoring solution that preserves native valve functionality, initially supplements it, and gradually replaces it, using a collapsible and expandable anchoring structure with a base stent, intermediate spring-like section, and atrial dome, positioned above the native leaflet flexing point to prevent prolapse and maintain native valve function without extending into the left ventricle or pulmonary arteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current prosthetic heart valve solutions are used for full replacement of native valves, then valve functionality is restored, but native leaflet functionality is damaged and invasive anchoring is required
Solution Approach 1:
The invention extracts the anchoring function from the prosthetic valve implant itself and relocates it to a separate anchoring structure implanted in the left atrium. This allows the prosthetic valve to be positioned without directly anchoring into or damaging the native valve leaflets, thus preserving native leaflet functionality while still providing secure positioning of the prosthetic valve.
Solution Approach 2:
The invention introduces an intermediary anchoring structure (the left atrial anchoring device with base stent and atrial dome) that mediates between the prosthetic valve and the heart chamber. This intermediary structure provides the anchoring function without requiring direct interaction with or damage to the native valve leaflets, resolving the contradiction between secure anchoring and preservation of native tissue.
2Reliability
If current prosthetic heart valve solutions are used, then valve replacement is achieved, but the device is bulky and invasive making delivery and positioning difficult
Solution Approach 1:
The invention segments the overall valve replacement system into distinct components: a separate anchoring structure implanted in the left atrium and a prosthetic valve component. This segmentation allows each component to be optimized independently - the anchoring structure can be delivered and positioned first to create a receptive environment, followed by the prosthetic valve, simplifying the overall delivery and positioning process.
Solution Approach 2:
The invention performs preliminary action by implanting the anchoring structure in the left atrium before deploying the prosthetic valve. The anchoring structure with its base stent and atrial dome is established first to create a prepared environment that facilitates subsequent easy delivery and positioning of the prosthetic valve, reducing the complexity of the overall procedure.
3Reliability
If existing prosthetic valve solutions are used, then valve function is replaced, but native valve functionality is interfered with and unnecessary trauma is caused
Solution Approach 1:
The invention extracts the anchoring function from the prosthetic valve implant itself and relocates it to a separate anchoring structure implanted in the left atrium. This allows the prosthetic valve to be positioned without directly anchoring into or damaging the native valve leaflets, thus preserving native leaflet functionality while still providing secure positioning of the prosthetic valve.
4Object-affected harmful factors
If single-chamber anchoring is used to preserve native valve function, then native leaflet functionality is maintained, but anchoring structure must be completely within the single chamber
Solution Approach 1:
The invention resolves the spatial constraint by changing the dimensional arrangement of the anchoring structure. The base stent is positioned in the lower portion of the left atrium while the atrial dome extends upward into the upper portion of the left atrium, utilizing the vertical dimension of the chamber. This dimensional arrangement allows the anchoring structure to achieve secure anchoring completely within the left atrium without extending into other chambers, while still preserving native valve function.
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
This solution allows for the preservation and eventual replacement of native valve function while minimizing interference with native leaflets, reducing trauma, and ensuring the prosthetic valve does not rely on invasive anchoring, thus maintaining or restoring valve functionality effectively.
Implementation Method 1
the intermediate spring-like section will allow some compliance flexing thereby enabling the implanted prosthetic valve to move or comply with the natural movements of the heart
Implementation Method 2
comprising a self-expanding membrane or mesh material
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Various embodiments of the present invention comprise a single-chamber collapsible and expandable prosthetic valve implant device with an elevated valve section and comprising the following capabilities: (1) preservation of native valve functionality; (2) initial preservation of native valve functionality with subsequent full replacement of native valve functionality; (3) full replacement of native valve functionality; and/or (4) mitigation of the prolapsing distance of the dysfunctional leaflets by preventing the anterior excursion of the prolapsing leaflets above the upper annular surface and into the left atrial chamber in order to preserve native leaflet functionality for as long as possible. The expanded and implanted device does not extend beyond the boundaries of the subject heart chamber, e.g., the left atrium, thereby enabling the preservation of any remaining native valve functionality with subsequent full replacement of native valve functionality if and when needed.