Ultrasonic Imaging Device with Pressure Reducing Unit for Breast Shape Stability

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing ultrasonic diagnostic apparatuses for breast cancer screening face challenges in maintaining a consistent breast shape during imaging, leading to variations in tomogram quality and diagnostic accuracy due to operator-dependent probe contact strength and angle, and the difficulty in distinguishing between malignant and benign tumors.

Innovation Solution

An ultrasonic imaging device with a container that uses a pressure reducing unit to maintain the breast shape close to a predetermined shape by creating a negative pressure environment, allowing for consistent imaging and improved diagnostic accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If a breast is immersed in a water tank for ultrasonic imaging, then imaging time is reduced and operator dependency is eliminated, but the breast shape becomes unstable and varies between measurements

Engineering Contradiction:
Improveimaging timeVSAvoidbreast shape stability
Core Design Contradiction:
Loss of timeVSStability of the object's composition

Solution Approach 1:

The patent applies counterpressure from the water tank to counterbalance the deformation forces acting on the breast. By controlling the water pressure, the system maintains the breast in a stable, predetermined shape during imaging, preventing the shape instability that occurs with free immersion while still enabling rapid automated imaging.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The patent changes the physical parameters of the imaging environment by controlling water temperature and pressure in the tank. These parameter changes affect the mechanical properties of breast tissue, helping to maintain a stable, reproducible shape during imaging while allowing automated scanning to proceed efficiently.

Inventive Principle:
Principle #35Parameter changes

2Measurement precision

If a probe is used for breast imaging, then detailed tomograms can be acquired, but the contact strength and angle vary between operators leading to inconsistent results

Engineering Contradiction:
Improvetomogram qualityVSAvoidoperator dependency
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent extracts the operator from the imaging process by replacing manual probe operation with automated ultrasonic scanning. The water tank environment allows automated transducers to scan the breast from multiple angles without requiring operator skill, eliminating the variability in contact strength and angle while maintaining high imaging quality through systematic automated acquisition.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system performs self-imaging by using automated ultrasonic transducers that scan the breast independently without human intervention. The water tank provides a stable medium for automated scanning, allowing the system to acquire high-quality tomograms consistently without relying on operator skill or manual probe manipulation.

Inventive Principle:
Principle #25Self-service

3Strength

If the breast is deformed during imaging, then contact with the probe is improved, but the measured shape does not represent the natural state and reproducibility decreases

Engineering Contradiction:
Improveprobe contactVSAvoidshape measurement reliability
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent creates an equipotential environment by immersing the breast in water, which provides uniform support and eliminates the need for asymmetric probe pressure to achieve contact. The water medium ensures consistent contact across the entire breast surface during automated scanning, maintaining natural shape while enabling reliable imaging without localized deformation from probe pressure.

Inventive Principle:
Principle #12Equipotentiality

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 device ensures high accuracy in measuring breast shape and detecting minute differences in tumor masses over time, enhancing diagnostic reliability and reproducibility of tomograms.

Implementation Method 1

a pressure reducing unit that holds the target region in the container by reducing a pressure in the container

Methodology Applied
Scientific EffectPressure reduction: Depressurisation

Implementation Method 2

a transmission/reception unit that transmits ultrasound to the target region inserted into the container and receives the ultrasound (a penetrated wave, a reflected wave, and the like) that is scattered from the target region

Methodology Applied
Scientific EffectUltrasound transmission and reception: Ultrasound

Data Source

PatentUS11045168B2Ultrasonic imaging device, and ultrasonic transmission/reception method
Publication Date: 2021.06.29 HITACHI LTD
  • US11045168B2 patent drawing
  • US11045168B2 patent drawing
  • US11045168B2 patent drawing

AI summary

An ultrasonic imaging device according to the present invention includes: a container provided with an opening for inserting a target region of a subject; and a transmission/reception unit that transmits ultrasound to the target region inserted into the container filled with a liquid and receives the ultrasound that penetrates the target region or is reflected from the target region. The container has a pressure reducing unit that holds the target region in the container by reducing a pressure in the container of which the opening is covered with the target region. According to the present invention, since it is possible to maintain a shape close to a predetermined shape when the target region of a breast or the like is inserted into a container filled with the liquid, it is possible to measure the target region with high accuracy by transmitting and receiving ultrasound.