Esophagogastric Junction Partial Dissection for Reflux Control
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Solution Overview
Problem
Gastroesophageal reflux disease is challenging to treat due to the reflux of gastric acid into the esophagus, often caused by a relaxed lower esophageal sphincter or sliding esophageal hiatal hernia, leading to inflammatory conditions and potential adenocarcinoma.
Innovation Solution
A method involving the partial dissection of the mucosal or submucosal layer at the esophagogastric junction to create a moderate stenosis, forming a narrowed opening that prevents gastric acid reflux by cicatricial scarring, using techniques like endoscopic mucosal resection or submucosal dissection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lower esophageal sphincter is relaxed or sliding esophageal hiatal hernia occurs, then gastric acid reflux into the esophagus is facilitated, but effective prevention of reflux becomes difficult
Solution Approach 1:
The method performs preliminary dissection of the mucosal or submucosal layer to create controlled stenosis before reflux occurs, proactively preventing the pathological condition rather than treating it after lower esophageal sphincter relaxation or hiatal hernia develops
Solution Approach 2:
The dissection is performed locally at specific sites of the esophagogastric junction or stomach to create focal stenosis, rather than applying a general treatment approach, thereby addressing the specific anatomical defect causing reflux
2Reliability
If complete circumferential dissection of the mucosal or submucosal layer is performed, then severe stenosis occurs causing postprandial dysphagia, but insufficient dissection fails to prevent reflux
Solution Approach 1:
The method applies partial action by performing dissection in a range of less than the entire circumference (specifically 1/4 or more but less than the full circumference) of the esophagogastric junction, creating moderate stenosis that prevents reflux while avoiding the excessive dissection that would cause severe dysphagia
Solution Approach 2:
The invention changes the critical parameter of dissection circumference from complete (360 degrees) to partial (1/4 or more but less than entire circumference), thereby transforming the outcome from severe stenosis with dysphagia to moderate stenosis that effectively prevents reflux while maintaining adequate luminal patency
3Reliability
If the esophagogastric junction opening is made smaller to prevent reflux, then reflux is effectively blocked, but the opening may become too narrow causing dysphagia
Solution Approach 1:
The dissection creates moderate stenosis through partial circumferential injury (1/4 or more but less than entire circumference), achieving sufficient narrowing to prevent reflux while avoiding excessive narrowing that would impair swallowing function
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
Effectively prevents gastric acid reflux and reduces dysphagia by creating a narrowed opening that is easily closed by the lower esophageal sphincter, addressing the reflux and stenosis issues while minimizing the risk of postprandial dysphagia.
Implementation Method 1
dissecting one of a mucosal layer and a submucosal layer of at least one of an esophagogastric junction and a stomach in a range less than an entire circumference of a circumferential direction so that moderate stenosis occurs due to cicatrization
Data Source
AI summary
There is provided a method of treating gastroesophageal reflux disease, which includes dissecting one of a mucosal layer and a submucosal layer of at least one of an esophagogastric junction and a stomach in a range less than an entire circumference of a circumferential direction so that moderate stenosis occurs due to cicatrization in an area in which one of the mucosal layer and the submucosal layer is dissected.