Adjustable Flow Narrow Profile Balloon for Aortic Occlusion
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Solution Overview
Problem
Conventional aortic balloon occlusion devices lack precision in placement and pressure control, leading to inadequate control over reperfusion and potential aortic rupture due to their all-or-nothing approach and crude pressure estimation.
Innovation Solution
A narrow profile balloon with an anchored and movable end, an inflatable tube, and a tension wire system allows for precise placement and adjustable occlusion in the aorta, enabling controlled blood flow and pressure application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional aortic balloon occlusion devices are used, then occlusion can be achieved, but precise placement and pressure control are lost
Solution Approach 1:
The balloon is divided into multiple independent cells (first cell, second cell, third cell) that can be inflated or deflated independently. This segmentation allows precise control over the balloon's shape and position within the aorta, enabling accurate placement while maintaining overall device functionality.
Solution Approach 2:
The balloon incorporates movable elements including a distal tip that can move between inflated and deflated states, and a body portion with cells that can be selectively inflated. This dynamic capability allows the balloon to adapt its configuration for precise placement and controlled pressure application throughout the procedure.
2Measurement precision
If conventional aortic balloon occlusion devices are used, then occlusion can be achieved, but pressure control accuracy deteriorates
Solution Approach 1:
The balloon body is divided into multiple cells that can be inflated to different pressure levels independently. This allows gradual pressure application and precise control, preventing sudden pressure spikes that could cause aortic rupture while maintaining effective occlusion when needed.
Solution Approach 2:
The device incorporates pressure sensors that provide real-time feedback on the pressure applied to the aorta. This feedback mechanism allows the operator to monitor and adjust inflation levels precisely, preventing over-pressurization and aortic rupture while maintaining effective occlusion.
3Adaptability or versatility
If conventional aortic balloon occlusion devices are used, then occlusion can be achieved, but reperfusion control is poor
Solution Approach 1:
The multi-cell balloon structure allows selective deflation of individual cells to control reperfusion. The distal tip can be deflated first to restore distal perfusion, while proximal cells remain inflated to maintain occlusion, enabling staged and controlled reperfusion sequences.
Solution Approach 2:
The balloon's dynamic configuration capabilities allow rapid transition between occlusion and reperfusion states by selectively inflating or deflating different cells. This provides versatile control over blood flow restoration while maintaining relatively simple operational procedures through centralized control.
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
The solution provides precise placement and controlled pressure application, preventing aortic rupture and allowing for selective occlusion and reperfusion, enhancing the safety and effectiveness of aortic balloon occlusion procedures.
Implementation Method 1
at least one tension wire attached to the movable end and extending through the catheter such that the at least one tension wire is accessible to move the movable end of the balloon towards the anchored end
Implementation Method 2
an inflatable tube located along the wall and circumscribing the wall
Data Source
AI summary
An adjustable flow narrow profile balloon device for use in an aorta has a catheter and an adjustable flow device comprising a scaffold having an anchored end fixed to the catheter, a movable end distal to the fixed end and support extending between the anchored end and the movable end, and a flexible tube attached to the support and at least one tension wire attached to the movable end and extending through the catheter such that the at least one tension wire is accessible to move the movable end of the balloon towards the anchored end when the catheter is positioned in the aorta. The adjustable flow device has a collapsed configuration; a fully occluded configuration in which the length of the support lies flat against the catheter and the flexible tube is inflated; and adjustable flow configurations allowing for a desired amount of fluid flow past the device.