Endoscopic Forceps Jaw Structure for Disposable Durability

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Solution Overview

Problem

Endoscopic treatment tools, such as biopsy forceps, are typically disposable and require a balance between low cost and high performance, but existing designs do not effectively address this need.

Innovation Solution

The endoscopic treatment device incorporates a sheath with a rotation shaft, forceps pieces rotatably supported by a pin, and a wire connection to a proximal end, featuring distinct openings and holes for enhanced functionality and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If endoscopic treatment tools are designed as disposable products to reduce cost, then manufacturing cost is reduced, but performance and durability deteriorate

Engineering Contradiction:

Improvemanufacturing costVSAvoidperformance and durability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The forceps piece is divided into multiple functional regions: a first region with a first opening for rotation shaft passage and a second region with a second opening for wire passage. This segmentation allows each region to be optimized independently - the first region for rotational durability and the second region for wire engagement - thereby maintaining high performance in a disposable design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the forceps piece are given different structural qualities. The first opening is designed with specific dimensional characteristics to accommodate the rotation shaft, while the second opening has different characteristics for wire passage. This local differentiation ensures that each area performs its specific function optimally, achieving high overall performance through localized optimization.

Inventive Principle:

Principle #3Local quality

2Ease of manufacture

If the forceps piece structure is simplified to reduce manufacturing complexity, then ease of manufacture is improved, but functional performance deteriorates

Engineering Contradiction:

Improvemanufacturing complexityVSAvoidfunctional performance

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The forceps piece serves multiple functions through its dual-opening structure: the first opening enables rotational movement of the shaft while the second opening enables wire passage and tension transmission. By integrating these multiple functions into a single component rather than using separate parts, the design achieves multi-functionality without increasing manufacturing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the rotational support function and wire passage function into a single forceps piece structure. Instead of using separate components for shaft rotation and wire engagement, both functions are merged into one integrated piece with appropriately positioned openings, simplifying the overall assembly while maintaining full functionality.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20260090815A1Endoscopic treatment apparatus and method of manufacturing endoscopic treatment tool

Publication Date: 2026.04.02 OLYMPUS MEDICAL SYST CORP

AI summary

An endoscope treatment instrument having a sheath, a rotation axis extending in a width direction orthogonal to a longitudinal direction of the sheath, a plate formed with a first opening through which the rotation axis passes and a second opening having a width different from the width of the first opening, a forceps piece rotatably supported about the first opening and the rotation axis passing through the second opening, and a wire connected to a proximal end portion of the plate.