Dental Probe with Nested Optical and Ultrasonic Transducers

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Solution Overview

Problem

Current dental structure imaging technologies, such as direct digital radiology, require large equipment, result in low-quality 3D images, and pose radiation exposure concerns, limiting patient comfort and spatial accessibility.

Innovation Solution

A probe and dental structure imaging system that combines optical and ultrasonic signals to acquire both surface and depth information using a smaller, more accessible device, featuring a working channel with an optical element and ultrasonic transducer, allowing for simultaneous image registration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If direct digital radiology (DDR) technique is used to acquire radiographic images, then imaging capability is provided, but equipment size becomes considerable and spatial accessibility is reduced

Engineering Contradiction:
Improveimaging capabilityVSAvoidequipment size
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The optical element and ultrasonic transducer are nested within the probe body, with the ultrasonic transducer positioned on the outer side of the optical element within the same working channel. This nested arrangement allows both imaging modalities to be integrated in a compact form factor, eliminating the need for large separate imaging equipment while maintaining dual imaging capability.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If DDR technique is used, then radiographic imaging is achieved, but radiation exposure occurs

Engineering Contradiction:
Improveimaging capabilityVSAvoidradiation exposure
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the radiation-based DDR imaging system with a mechanical/optical/ultrasonic imaging system. The optical element captures optical signals and the ultrasonic transducer generates ultrasonic signals without using ionizing radiation, thereby eliminating radiation exposure while maintaining imaging capability through alternative physical principles.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If optical element is positioned at center of working channel, then optical signal acquisition is optimized, but ultrasonic transducer positioning becomes constrained

Engineering Contradiction:
Improveoptical signal acquisitionVSAvoidtransducer positioning
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The working channel is designed with differentiated zones: the optical element is positioned at the center for optimal optical signal acquisition, while the ultrasonic transducer is positioned on the outer side within the same channel. This spatial differentiation within the constrained working channel allows each component to occupy its optimal position without interfering with the other, resolving the positioning conflict through localized quality optimization.

Inventive Principle:
Principle #3Local quality

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 the acquisition of high-quality images with both surface and depth information in the same field of view, improving patient comfort and spatial accessibility by using smaller equipment that reduces radiation exposure.

Implementation Method 1

at least to one optical element provided in the working channel and configured to acquire a spectral image of surface information of an object

Methodology Applied
Scientific EffectOptical signal detection: Reflection

Implementation Method 2

an ultrasonic transducer arranged in the working channel and configured to acquire an ultrasonic image of depth information

Methodology Applied
Scientific EffectUltrasonic imaging: Ultrasound

Data Source

PatentUS11660072B2Probe and system for imaging dental structure comprising the same
Publication Date: 2023.05.30 DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY
  • US11660072B2 patent drawing
  • US11660072B2 patent drawing
  • US11660072B2 patent drawing

AI summary

A probe includes a working channel, at least one optical element provided in the working channel and configured to acquire a spectral image of surface information of an object, and an ultrasonic transducer arranged in the working channel and configured to acquire an ultrasonic image of depth information of the target and move with respect to the at least one optical element.