Elastic-Wing Clip Delivery for Endoscopic Fixation

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Solution Overview

Problem

Existing clip systems for endoscopic treatments face challenges in efficiently delivering and reloading clips to treat dissection portions, particularly in maintaining the closed state of the clip and ensuring reliable fixation and re-grasping capabilities during the procedure.

Innovation Solution

A clip unit with a tube structure featuring elastically deformable wings and a clip delivery device with a sheath mechanism that allows for the clip unit to be loaded, fixed, and reloaded, ensuring reliable fixation and re-grasping of tissues through the use of elastically deformable wings and a detachable connection system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the clip unit is designed with a tube structure containing the clip, then the clip can be securely accommodated and maintained in closed state, but the device complexity increases

Engineering Contradiction:

Improveclip closed state maintenanceVSAvoidtube structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The clip is nested within the tube structure, with the tube containing the clip in a closed state. This nesting arrangement securely accommodates the clip while maintaining its closed configuration, resolving the contradiction between reliability and device complexity.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The tube structure is segmented into functional components including the tube main body, first wing, and second wing. This segmentation allows each component to perform its specific function while collectively providing secure clip accommodation, balancing reliability with manageable complexity.

Inventive Principle:

Principle #1Segmentation

2Reliability

If elastically deformable wings are used in the tube structure, then the clip unit can be reliably fixed and reloaded, but the manufacturing precision requirements increase

Engineering Contradiction:

Improveclip unit fixation and reloadingVSAvoidwing elasticity control precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The wings are designed with specific elastic properties that allow them to deform and return to their original shape. By controlling the elastic parameters of the wing material and structure, reliable fixation and reloading are achieved without requiring extremely high manufacturing precision.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The wings are designed to be dynamically deformable rather than rigidly fixed. This dynamic capability allows the wings to adapt during loading and fixation operations, improving reliability while reducing the stringency of manufacturing precision requirements.

Inventive Principle:

Principle #15Dynamics

3Productivity

If the clip unit is made reloadable with detachable connection, then productivity is improved, but the reliability of connection may decrease

Engineering Contradiction:

Improveclip reloading efficiencyVSAvoidconnection reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The connection structure is pre-designed with detachable features that ensure reliable connection during the loading process. The preliminary design of the connection mechanism allows for both easy detachment for reloading and secure connection during use, balancing productivity with reliability.

Inventive Principle:

Principle #10Preliminary action

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 efficient delivery and reloading of clips, ensuring secure fixation and re-grasping of tissues, facilitating reliable hemostasis and ligation during endoscopic procedures.

Implementation Method 1

The first wing is elastically deformable relative to the tube main body in a radial direction of the tube main body, and the first wing is biased radially inward toward an inner region of the tube main body

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The second wing is elastically deformable relative to the first wing in the radial direction of the tube main body, and the second wing is biased radially outward toward an outside of the tube main body

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS12426882B2Clip unit, clip delivery device, and loading method of clip unit

Publication Date: 2025.09.30 OLYMPUS MEDICAL SYST CORP

AI summary

A clip unit comprises a clip and a tube. the clip includes a plurality of arms movable between an open position and a closed position. The tube includes a tube main body configured to contain at least a part of the clip, a first wing, and a second wing. The first wing is connected to the tube main body and the second wing is connected to the first wing. The first wing is elastically deformable relative to the tube main body in a radial direction of the tube main body, and the first wing is biased radially inward toward an inner region of the tube main body. The second wing is elastically deformable relative to the first wing in the radial direction of the tube main body, and the second wing is biased radially outward toward an outside of the tube main body.