Endoscopic Loop Frame with Lug Slits for Tissue Control

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Solution Overview

Problem

Existing deployable snare systems for medical procedures lack control and accuracy in placing a loop member due to deflection out of the intended plane of application, making it difficult to apply force effectively on target tissue.

Innovation Solution

A deployable segment with a loop member and a frame coupled to at least three lugs, where the frame is collapsible and includes a steering portion and a cannula for precise control and deployment, allowing the loop member to be securely engaged with tissue through a compressive mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a deployable snare with a loop member is used for tissue treatment, then the ability to induce hemostasis and excise tissue is improved, but control and accuracy in placing the loop are reduced due to deflection out of the intended plane of application

Engineering Contradiction:

Improveeffectiveness of hemostasis and tissue excisionVSAvoidcontrol and accuracy in placing the loop

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The deployable snare is divided into distinct segments: a delivery catheter for navigation, a deployable frame for structural support, and a loop member for tissue engagement. This segmentation allows each component to perform its specific function independently, improving overall control and placement accuracy while maintaining therapeutic effectiveness

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A deployable frame acts as an intermediary structure between the delivery system and the loop member. This frame provides a stable platform that guides the loop member to the target tissue, preventing deflection and improving placement accuracy while enabling effective tissue engagement

Inventive Principle:

Principle #24Intermediary (Mediator)

2Force

If the loop size is adjusted using a stopper or cinching member, then the ability to impose force on target tissue is improved, but the loop may deflect out of the intended plane of application

Engineering Contradiction:

Improveforce imposed on target tissueVSAvoidloop plane stability

Core Design Contradiction:

ForceVSStability of the object's composition

Solution Approach 1:

The deployable frame serves as a mediator between the cinching mechanism and the loop member. It provides structural support that maintains the loop's planar configuration even when force is applied through the stopper or cinching member, preventing deflection while enabling effective tissue compression

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The deployable frame incorporates materials with appropriate mechanical properties that provide both flexibility for deployment and rigidity for maintaining loop stability during cinching. This composite construction allows the frame to transmit force effectively while resisting deflection

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS20240307065A1Endoscopic Loop Systems and Methods of Use

Publication Date: 2024.09.19 ENDOVISION FOUND

AI summary

The present embodiments provide apparatus and methods for treating tissue by applying a force to the tissue. In one embodiment, the apparatus comprises a deployable segment having a loop member formed at a distal region of the deployable segment. A frame is operatively coupled to the loop member. In some embodiments, the frame may be operatively coupled to the loop member by at least three lugs; each lug has a slit, and the loop member extends through each lug slit. The loop member includes a gauge diameter, the slit has an opening, and the slit opening may be narrower than the loop member gauge diameter.