Endoscopic Thermal Ablation for GERD Stenosis

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Solution Overview

Problem

Current treatments for gastroesophageal reflux disease (GERD) either require long-term oral medication with uncertain symptom improvement or highly invasive surgical procedures, and existing endoscopic treatments involve mucous membrane resection which can be risky and difficult to repeat.

Innovation Solution

An endoscopic treatment method involving thermal ablation of the mucosal layer along the gastroesophageal junction to create a damaged area that forms incomplete stenosis during healing, reducing reflux without excising the mucous membrane, using a flexible endoscope and treatment tools like high-frequency knives or heat probes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If mucous membrane resection is performed to cause scarring and stenosis, then reflux suppression is achieved, but the risk of perforation and bleeding increases

Engineering Contradiction:

Improvereflux suppression effectivenessVSAvoidperforation and bleeding risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces mechanical resection (cutting) with thermal energy application. The heated balloon expands against the mucosal layer, causing controlled thermal damage through heat transfer rather than mechanical cutting, thereby achieving tissue ablation without the risks of perforation and bleeding associated with resection

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the physical state and properties of the tissue through thermal energy. By controlling the temperature and duration of heat application, the mucosal layer undergoes controlled denaturation and coagulation, transforming the tissue properties to create scar tissue that provides reflux suppression without requiring complete resection

Inventive Principle:

Principle #35Parameter changes

2Reliability

If surgical treatment such as laparoscopic Nissen fundoplication is performed, then GERD problem is solved, but the invasiveness increases

Engineering Contradiction:

ImproveGERD treatment effectivenessVSAvoidsurgical invasiveness

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces complex surgical mechanical procedures with a simpler endoscopic approach. Instead of performing laparoscopic fundoplication which requires external incisions and complex suturing, the invention uses an endoscopically delivered heated balloon to create circumferential mucosal damage, achieving similar functional outcomes through thermal energy rather than mechanical reconstruction

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a heated balloon as an intermediary device that delivers thermal energy to the mucosal layer. This intermediary allows for controlled energy transfer from the endoscope to the tissue, enabling precise thermal ablation without requiring complex surgical manipulation or external incisions

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If long-term oral treatment with gastric acid secretion inhibitor is administered, then symptom improvement may be achieved, but the treatment duration increases

Engineering Contradiction:

Improvesymptom improvementVSAvoidtreatment duration

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent replaces prolonged pharmacological treatment with a single procedural intervention. Instead of requiring patients to take gastric acid secretion inhibitors daily for extended periods, the thermal ablation procedure creates permanent structural changes in the mucosal layer that provide lasting reflux suppression, substituting continuous medication with a one-time procedural treatment

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

This method effectively reduces GERD symptoms by creating a valve-like structure that prevents reflux, is minimally invasive, and allows for flexible retreatment options without the risks of perforation or bleeding, maintaining mucosal integrity and reducing discomfort during swallowing.

Implementation Method 1

perform thermal ablation of mucosal layer while maintaining the mucosal layer

Methodology Applied

Scientific EffectThermal ablation: Ablation

Implementation Method 2

thermal ablation of the mucosal layer along the gastroesophageal junction

Methodology Applied

Scientific EffectHeating: Heating

Data Source

PatentUS10835222B2Method for treating gastro esophageal reflux disease

Publication Date: 2020.11.17 OLYMPUS CORPORATION(JP)

AI summary

In an endoscopic treatment method, a damaged area is formed in at least a portion of a digestive tract along a circumferential direction. The damaged area is formed by performing thermal ablation of mucosal layer and not removing the mucosal layer. An incomplete stenosis is formed in the digestive tract during restoration of the damaged area.