Percutaneous Vessel Bypass Prosthesis for Occluded Coronary Arteries
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional coronary bypass surgery is invasive and risky for certain patients, and balloon angioplasty is not suitable for completely occluded coronary arteries, leaving a need for minimally invasive techniques to create vessel bypasses.
Innovation Solution
A catheter system with a flat radiopaque marker and needle aperture is used to target and align with a second vessel, enabling the creation of a bypass using minimally invasive percutaneous surgical techniques, with methods to deploy a prosthesis and make valves incompetent to divert blood flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coronary bypass surgery is performed to bypass completely occluded coronary arteries, then blood flow restoration is achieved, but surgical trauma and recovery time are significantly increased
Solution Approach 1:
The bypass procedure is divided into separate modular steps: (1) catheter-based needle puncture to create initial access, (2) guidewire insertion and vessel traversal, (3) prosthesis deployment through the catheter system, and (4) valve rendering incompetent to ensure unidirectional flow. This segmentation allows each step to be performed minimally invasively through catheter access rather than open surgery.
Solution Approach 2:
A catheter system serves as an intermediary device that enables the creation of vessel bypasses without direct surgical exposure. The catheter contains and delivers the prosthesis, guides the needle puncture, and provides a controlled pathway for creating the bypass connection between vessels, thereby avoiding the need for open-chest surgery.
2Reliability
If conventional coronary bypass surgery is performed, then blood flow restoration is achieved, but recovery time is significantly extended
Solution Approach 1:
The invention replaces the mechanical open-surgery approach with a catheter-based interventional system. Instead of physically exposing vessels through incisions and sutures, the system uses a flexible catheter that can be navigated through the vascular system to deliver the prosthesis and create the bypass, dramatically reducing procedural time and recovery.
3Reliability
If balloon angioplasty is used to treat partially occluded coronary arteries, then blood flow is restored, but it is not suitable for completely occluded arteries
Solution Approach 1:
The catheter-based bypass system is designed to be universally applicable to both partially occluded and completely occluded coronary arteries. The system can traverse completely blocked vessels where balloon angioplasty fails, and the prosthesis deployment mechanism works regardless of the degree of occlusion, making it a multi-functional solution for various types of coronary blockages.
Data Source
AI summary
Devices and methods divert blood flow from a first vessel to a second vessel and maintain blood flow in the first vessel. The device includes a first segment and a second segment. The first segment is configured to anchor in the first vessel. The first segment includes a window to allow blood to flow into the first segment, through the window, and distal in the first vessel. The second segment is configured to anchor in the second vessel. The second segment is configured to allow blood to flow into the first segment, through the second segment, and into the second vessel.