Four-Dimensional Manometry for Bolus Transit and EGJ Function
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Solution Overview
Problem
Conventional esophageal impedance manometry techniques fail to provide quantification of bolus emptying flux, emptying velocity, and wall stiffness, limiting the evaluation of esophagogastric junction properties and function.
Innovation Solution
A method for generating a rendering that simultaneously depicts space-time variations of impedance, pressure, and esophageal luminal morphology, allowing for the computation of luminal liquid cross-sectional area and radius, and displaying these data to a user without the need for additional imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional esophageal impedance manometry techniques are used, then impedance and pressure data can be obtained, but quantification of bolus emptying flux, emptying velocity, and wall stiffness cannot be provided
Solution Approach 1:
The patent transforms conventional 2D impedance and pressure measurements into a 4D visualization framework by adding spatial (cross-sectional area, radius) and temporal dimensions. This dimensional expansion enables quantification of bolus emptying flux, emptying velocity, and wall stiffness that were previously unmeasurable with conventional techniques.
Solution Approach 2:
The patent derives new physiological parameters (luminal liquid cross-sectional area, luminal radius, bolus emptying flux, emptying velocity, wall stiffness) from conventional impedance and pressure data through mathematical transformations. These parameter changes enable comprehensive evaluation of esophagogastric junction properties without requiring additional imaging modalities.
2Measurement precision
If additional imaging modalities are used to obtain esophageal morphology data, then complete esophageal function evaluation can be achieved, but exposure to ionizing radiation increases
Solution Approach 1:
The patent replaces ionizing radiation-based imaging modalities (such as fluoroscopy or CT) with a non-ionizing electrical impedance-based measurement system. By using impedance tomography principles, the system reconstructs esophageal luminal morphology and dynamics without exposing the patient to harmful radiation, while still providing comprehensive functional evaluation.
3Loss of information
If conventional manometry techniques are used, then pressure data can be measured, but space-time concurrent esophageal morphology and pressure distribution cannot be visualized
Solution Approach 1:
The patent creates a multi-functional data processing system that simultaneously extracts multiple physiological parameters (impedance, pressure, cross-sectional area, radius, bolus emptying characteristics) from the same sensor measurements. This universal system eliminates the need for separate imaging modalities and provides comprehensive space-time concurrent visualization of morphology and pressure distribution.
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 the determination of esophageal emptying properties and EGJ function by quantifying bolus transit characteristics and avoiding exposure to ionizing radiation.
Implementation Method 1
esophageal impedance manometry measures impedance and pressure
Implementation Method 2
esophageal impedance manometry measures impedance and pressure (e.g., esophageal luminal pressure)
Data Source
AI summary
Described here are systems and methods for four-dimensional manometry, which can include generating and displaying rendering data that simultaneously depict spacetime variations in impedance, pressure, and esophageal luminal morphology. From these data, bolus tracking and esophageal opening and velocity data can be measured and visualized without the need for additional imaging, thereby reducing a subject's exposure to otherwise necessary ionizing radiation.