Angled Dual Balloon Stent Deployment at Vessel Bifurcations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current stent deployment methods at bifurcations in blood vessels often result in stent protrusion into the main branch, leading to complications and requiring multiple steps, which increases medical operation time and risks patient safety.
Innovation Solution
A device with two inflatable hollow bodies, where one is aligned flush with the other in a deflated state and can expand to a predetermined angle when inflated, allowing the stent to be fully seated against the vessel wall at the bifurcation, preventing protrusion and enabling a single-step stent application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stent is placed in the side branch at a bifurcation, then the side branch constriction can be treated, but the stent protrudes into the main branch causing complications
Solution Approach 1:
The device divides the stent deployment function into two separate inflatable hollow bodies: one for the main branch and one for the side branch. This segmentation allows independent control of stent expansion in each branch, preventing protrusion into the main branch while ensuring complete coverage of the side branch ostium.
Solution Approach 2:
The first inflatable hollow body acts as an intermediary that stabilizes the main branch vessel wall during stent deployment in the side branch. By inflating this intermediary structure, the device creates a stable platform that prevents stent protrusion while enabling complete ostium coverage.
2Productivity
If traditional stent deployment is used at bifurcations, then stents can be placed in both branches, but multiple steps are required increasing operation time
Solution Approach 1:
The device merges the stent deployment function for both main and side branches into a single integrated catheter system with two inflatable hollow bodies. This allows simultaneous or sequential deployment of stents in both branches through a single catheter insertion and one-step inflation process, reducing operation time while maintaining complete bifurcation coverage.
Solution Approach 2:
The dual inflatable hollow body structure provides multi-functionality: the first hollow body stabilizes the main branch while the second deploys the side branch stent, and both can be inflated through the same catheter system. This universal design eliminates the need for separate catheter insertions and deployment steps.
3Manufacturing precision
If the stent in the side branch protrudes into the main branch, then the ostium can be covered, but complications arise and vessel wall stability is compromised
Solution Approach 1:
The first inflatable hollow body is inflated beforehand to stabilize the main branch vessel wall before deploying the side branch stent. This preliminary action creates a stable anatomical reference and prevents stent protrusion, ensuring accurate positioning at the ostium while maintaining vessel wall stability throughout the procedure.
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 ensures complete elimination of constrictions at bifurcations, stabilizes the vessel wall, prevents stent protrusion, and reduces medical operation time, enhancing patient safety by allowing a single-step stent application.
Implementation Method 1
by inflating this balloon, i.e. batton dilation, is pressed against the vessel at the desired location
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a device for the predeterminable arrangement of a stent (2) in a blood vessel (3), wherein the device comprises a first inflatable hollow body (4) and a second inflatable hollow body (5), wherein in a limp state of the two inflatable hollow bodies (4, 5) the first hollow body (4) and the second hollow body (5) are each substantially cylindrical, and wherein the first hollow body (4) is arranged substantially in alignment with a longitudinal extension of the second hollow body (5). According to the invention, in a predeterminable inflated state of the two hollow bodies (4, 5), the first hollow body (4) and the second hollow body (5) are each substantially cylindrical, and the longitudinal extension of the second hollow body (5) assumes a predeterminable angle between 20° and 160° with respect to the longitudinal extension of the first hollow body (4).