Ultrasonic Endoscope Backing Layer for Compact, Durable Imaging

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Solution Overview

Problem

Existing ultrasonic endoscopes are large in size, which poses challenges in terms of maneuverability and practicality for medical procedures.

Innovation Solution

The ultrasonic endoscope is designed with a backing material layer having a glass transition temperature of 45 degrees or lower, combined with a specific configuration of ultrasonic oscillators and a filler to reduce size while maintaining durability and attenuation performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If conventional backing material layers are used in ultrasonic endoscopes, then the endoscope maintains structural integrity, but the endoscope size becomes large

Engineering Contradiction:
Improveendoscope sizeVSAvoidstructural integrity
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The patent applies parameter changes by selecting a backing material with a glass transition temperature of 45°C or lower. This specific parameter change in material properties allows the backing material to remain soft and compliant at body temperatures, enabling size reduction while maintaining structural integrity and ultrasonic wave attenuation performance.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs composite materials by combining the ultrasonic oscillator with a backing material layer having specific glass transition temperature characteristics. This composite structure optimizes both the mechanical properties for structural integrity and the thermal properties for size reduction, achieving multiple objectives simultaneously.

Inventive Principle:
Principle #40Composite materials

2Volume of moving object

If the backing material layer has lower glass transition temperature to reduce size, then endoscope diameter decreases, but durability may be compromised

Engineering Contradiction:
Improveendoscope diameterVSAvoiddurability
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

The patent resolves this contradiction through parameter changes by precisely controlling the glass transition temperature to be 45°C or lower. This parameter specification ensures the material remains soft enough for size reduction while maintaining sufficient durability for medical procedures, balancing both requirements through material property optimization.

Inventive Principle:
Principle #35Parameter changes

3Loss of energy

If conventional backing materials are used, then endoscope maintains standard size, but ultrasonic wave attenuation performance is insufficient

Engineering Contradiction:
Improveultrasonic wave attenuationVSAvoidendoscope size
Core Design Contradiction:
Loss of energyVSVolume of moving object

Solution Approach 1:

The patent addresses this contradiction through parameter changes in the backing material's glass transition temperature. By selecting materials with Tg ≤ 45°C, the material provides enhanced ultrasonic wave attenuation performance while enabling compact endoscope design, achieving both improved energy loss and reduced size simultaneously.

Inventive Principle:
Principle #35Parameter changes

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

The design achieves a reduction in endoscope diameter while enhancing durability and ultrasonic wave attenuation, improving maneuverability and reliability during use.

Implementation Method 1

a glass transition temperature of the backing material layer is 45 degrees or lower

Methodology Applied
Scientific EffectGlass transition:

Implementation Method 2

enhancing durability and ultrasonic wave attenuation

Methodology Applied
Scientific EffectUltrasonic attenuation: Acoustic Absorption

Data Source

PatentUS20250268566A1Ultrasonic endoscope
Publication Date: 2025.08.28 FUJIFILM CORP
  • US20250268566A1 patent drawing
  • US20250268566A1 patent drawing
  • US20250268566A1 patent drawing

AI summary

An ultrasonic endoscope includes: a distal end part which includes an ultrasound transmission and reception section and an imaging unit, the ultrasound transmission and reception section includes an ultrasonic oscillator and a backing material layer, and a glass transition temperature of the backing material layer is 45 degrees or lower.