Bifurcation Stent with Curvilinear Connectors
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Solution Overview
Problem
Current stent implantation systems for bifurcations often cause injuries, such as partial or complete closure of lateral artery branches, contraction, dissection, and thrombosis, due to complex procedures requiring high skill and modern equipment, limiting their use by less experienced operators and increasing operational complications.
Innovation Solution
A stent for bifurcation with two cylindrical parts of different diameters connected by curvilinear longitudinal connectors forming an enlarged surface area cell, used with a profiled balloon system for precise intravascular implantation, allowing adjustable positioning and expansion to prevent vessel blockage and facilitate safer implantation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one stent per each branch is implanted using separate systems, then coverage of both branches is achieved, but the implantation operation becomes extremely complicated and requires high skill and modern equipment
Solution Approach 1:
The patent combines two separate stent implantation systems into a single integrated system. The main body of the system houses both the first stent (for the first branch) and the second stent (for the second branch), allowing both stents to be implanted simultaneously through one procedural platform rather than requiring two separate implantation operations
Solution Approach 2:
The single implantation system is designed to perform multiple functions: it can deliver and implant both the first stent in the first branch and the second stent in the second branch through a unified delivery mechanism, making the system versatile for treating bifurcations with different branch configurations
2Reliability
If a forked stent is implanted using a complicated system, then both branches are covered, but the operation is extremely complicated and burdened with high probability of post-operational complications
Solution Approach 1:
The patent merges the delivery mechanisms for two separate stents into a single integrated delivery system, reducing the number of procedural steps and potential points of failure while maintaining the ability to cover both branches effectively
3Reliability
If state-of-the-art systems are used for bifurcation stent implantation, then branch coverage is achieved, but the procedure requires very modern equipment and highly skilled operators
Solution Approach 1:
The system is designed with universal applicability to handle various bifurcation geometries and branch orientations through a single platform, reducing the need for operator expertise in manipulating complex separate systems while maintaining effective branch coverage
4Ease of operation
If conventional stents are used at bifurcations, then implantation is simpler, but lateral branch closure, contraction, dissection, and thrombosis occur frequently
Solution Approach 1:
The system segments the treatment of the bifurcation by providing separate, dedicated stents for each branch (first stent for first branch, second stent for second branch) rather than using a single conventional stent, allowing each branch to be supported independently to prevent closure, contraction, and dissection while maintaining procedural simplicity
Data Source
AI summary
A method of introducing the stent and a system for intravascular implantation is disclosed. The stent for bifurcation includes two cylindrical parts: a distal part of smaller diameter and a proximal part of greater diameter, connected by two arranged as opposite longitudinal connectors having length of 0.5 to 8 mm and forming a cell of the stent having an enlarged surface area, the connectors having a curvilinear shape, in particular a sinusoidal shape.