REBOA Catheter Inflation Control for Automated Blood Pressure Modulation
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Solution Overview
Problem
Existing vascular occlusion procedures, particularly REBOA, face challenges in managing transient hypertension during occlusion and hypotension upon reestablishing blood flow, often requiring fluoroscopy and are not suitable for field operations.
Innovation Solution
A vascular occlusion catheter system with an atraumatic guiding tip and a pressure accumulator that automatically adjusts occlusion based on physiological parameters, allowing perfusion when hypertension occurs and re-establishing occlusion when pressure normalizes, controlled by computer hardware and software.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual fluoroscopy-guided REBOA occlusion is used, then occlusion can be established and maintained, but transient hypertension during occlusion and hypotension upon reestablishing blood flow occur, requiring continuous monitoring and manual adjustment
Solution Approach 1:
The patent implements an automated feedback control system where a pressure sensor continuously monitors blood pressure and provides real-time feedback to a control processor. The control processor automatically adjusts the occlusion balloon inflation/deflation based on the monitored pressure, eliminating the need for manual fluoroscopy-guided adjustment and reducing both hypertension during occlusion and hypotension upon reestablishing flow.
Solution Approach 2:
The system enables self-regulating blood pressure control through automated algorithms that independently manage the occlusion balloon without continuous operator intervention. The control system autonomously responds to pressure changes, adjusting occlusion levels to maintain stable blood pressure throughout the procedure.
2Reliability
If automated pressure-based occlusion adjustment is implemented, then transient hypertension and hypotension are managed automatically, but device complexity increases with addition of pressure sensors, control systems, and software
Solution Approach 1:
The patent merges the pressure sensing, control processing, and balloon actuation functions into an integrated system. The pressure sensor, control processor, and occlusion balloon are combined within the catheter assembly, reducing the need for separate external monitoring and control equipment while achieving automated blood pressure management.
Solution Approach 2:
The control system is designed to perform multiple functions: monitoring blood pressure, determining occlusion levels, controlling balloon inflation/deflation, and managing both hypertension during occlusion and hypotension upon reestablishing flow. This multi-functional approach reduces the need for separate specialized devices.
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
Enables fluoroscopy-free, automated management of hypertension and hypotension during vascular occlusion, suitable for field operations and emergency settings, enhancing patient stability and reducing procedural risks.
Implementation Method 1
a pressure accumulator that automatically adjusts occlusion based on physiological parameters
Data Source
AI summary
An inflation control system is provided for use with an occlusion catheter having an inflatable occlusion member for at least partial occlusion of a patient vessel. The inflation control system includes a fluid source in fluid communication with the inflatable occlusion member, a pressure source coupled to the fluid source and configured to move fluid between the fluid source and the inflatable occlusion member, and a controller operably coupled to the pressure source. The controller is configured to receive at least one patient vital sign as feedback and operate the pressure source to modulate an inflation volume of the occlusion member based, at least in part, on the feedback.