Endoscopic Treatment Device Insulative Support Electrode Precision

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Solution Overview

Problem

Conventional endoscopic treatment devices for procedures like ESD face challenges in efficiently incising and dissecting gastrointestinal tissues due to limitations in precision and control, particularly in visualizing and accessing lesions within the mucous membrane and submucosa layers.

Innovation Solution

An endoscopic treatment device comprising a hollow tube with a movable electrode and insulative support member, allowing for precise incision and dissection by spraying a fluid onto the mucous membrane, lifting the mucous membrane, and using high-frequency current to incise and dissect the submucosa layer, while maintaining visibility and preventing tissue damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional endoscopic treatment devices are used for incision and dissection, then the basic function of cutting tissue is achieved, but precision and control in visualizing and accessing lesions within the mucous membrane and submucosa layers are insufficient

Engineering Contradiction:

Improveprecision of incision and dissectionVSAvoidcontrol difficulty

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The device is divided into functionally independent modules: a high-frequency current generation unit for incision, a fluid injection system for tissue elevation, and an insulative support structure. This segmentation allows each component to be optimized independently for precision while maintaining overall operational control.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

An insulative support member is introduced as an intermediary component between the electrode and the surrounding environment. This mediator provides structural support and electrical insulation, enabling precise positioning of the electrode without compromising safety or control.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If high-frequency current is used for incision and dissection, then cutting efficiency is improved, but risk of tissue damage and loss of visualization increases

Engineering Contradiction:

Improveincision and dissection speedVSAvoidtissue damage and visualization loss

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The insulative support member acts as a mediator that confines and directs the high-frequency current application. It prevents current dispersion to surrounding tissues, reducing collateral damage while maintaining effective cutting at the target site.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The high-frequency current application is localized precisely to the electrode contact point on the tissue. The insulative support ensures that energy concentration occurs only where needed, improving cutting efficiency while minimizing damage to adjacent areas.

Inventive Principle:

Principle #3Local quality

3Illumination intensity

If fluid is sprayed onto the mucous membrane to lift it, then visualization and access to lesions are improved, but complexity of the device increases

Engineering Contradiction:

Improvevisualization clarityVSAvoiddevice structure complexity

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The fluid injection function is merged with the support structure by integrating injection ports directly into the insulative support member. This combination allows visualization improvement through tissue elevation without requiring separate complex fluid delivery systems.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The insulative support member serves multiple functions simultaneously: it provides mechanical support for precise electrode positioning, electrical insulation to prevent current leakage, and integrated fluid injection capability for tissue elevation. This multi-functionality reduces overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 precise and efficient incision and dissection of gastrointestinal tissues, improving the accuracy and speed of procedures like ESD by maintaining clear visualization and minimizing tissue damage.

Implementation Method 1

using high-frequency current to incise and dissect the submucosa layer

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Implementation Method 2

spraying a fluid from a treatment tool onto a mucous membrane... lifting the mucous membrane

Methodology Applied

Scientific EffectFluid pressure: Pressure Increase

Data Source

PatentUS20230248424A1Endoscopic treatment device

Publication Date: 2023.08.10 OLYMPUS MEDICAL SYST CORP

AI summary

An endoscopic treatment device includes a hollow tube; an electrode; and an insulative support member. In a radial direction relative to a longitudinal axis of the hollow tube, the insulative support member is radially outward of the electrode and the hollow tube is radially outward of the insulative support member.