Segmented Caval Prosthetic Valve for Tricuspid Insufficiency
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Solution Overview
Problem
Current transcatheter devices for treating tricuspid valve insufficiency are complex and difficult to deploy, often requiring multiple components and precise orientation, leading to challenges in achieving smooth and fast valve replacement.
Innovation Solution
A prosthetic valve device with a stent frame spanning the superior and inferior vena cava, featuring a covered proximal and distal portion with integrated valves and an uncovered medium portion for blood flow into the right atrium, allowing easy deployment and ensuring unidirectional blood flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If current transcatheter devices are used for treating tricuspid valve insufficiency, then valve replacement can be performed without open surgery, but the devices are complex and difficult to deploy requiring multiple components and precise orientation
Solution Approach 1:
The device is divided into three distinct portions: a proximal covered portion for anchoring in the superior vena cava, a distal covered portion for anchoring in the inferior vena cava, and an uncovered medium portion for blood flow into the right atrium. This segmentation allows each portion to perform its specific function independently while simplifying the overall deployment process compared to single-component devices.
Solution Approach 2:
Instead of using a fully covered stent frame that requires complex valve attachment procedures, the invention inverts the approach by leaving the medium portion uncovered to directly facilitate blood flow into the right atrium, while placing valves only in the covered proximal and distal portions. This inversion simplifies the device structure and deployment while maintaining effective valve function.
2Ease of operation
If current transcatheter devices are used for treating tricuspid valve insufficiency, then minimally invasive treatment is achieved, but deployment is difficult requiring precise orientation and multiple components
Solution Approach 1:
The invention merges the anchoring function and valve function into the covered proximal and distal portions, while the uncovered medium portion solely handles blood flow into the right atrium. This merging of functions in specific portions reduces the number of separate components needed and simplifies the deployment process compared to devices that require separate anchoring mechanisms and valve components.
Solution Approach 2:
Different portions of the device have different structural qualities: the proximal and distal portions are covered with prosthetic material to provide anchoring and house valves, while the medium portion is uncovered to allow direct blood flow into the right atrium. This local differentiation of quality optimizes each portion's function and simplifies overall device operation.
3Reliability
If a covered stent frame is used to anchor the device in the vena cava, then stable anchoring is achieved, but the device becomes more complex and deployment more difficult
Solution Approach 1:
The covered stent frame is segmented into proximal and distal covered portions that serve as anchoring zones, separated from the uncovered medium portion. This segmentation provides stable anchoring at both ends of the device while keeping the central flow portion simple and open, thereby maintaining reliability without excessive complexity.
Solution Approach 2:
The covered portions are localized specifically to the proximal and distal ends where anchoring is needed, while the medium portion remains uncovered for optimal blood flow. This local application of covering material provides necessary anchoring stability without making the entire device complex.
Data Source
AI summary
One exemplary aspect relates to a prosthetic valve device configured for treatment of a valve insufficiency of a heart, in particular of insufficiency of a tricuspid valve, having a longitudinal axis or length l, a proximal portion, a medium portion and a distal portion, and a lumen permitting blood flow there through.