Low-Coherence Interferometry for Tissue Abnormality Detection
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Solution Overview
Problem
Current methods are inadequate for early and accurate detection of pressure ulcers and deep tissue injuries, which can develop quickly and become life-threatening if not identified promptly.
Innovation Solution
A method using coherent electromagnetic radiation to assess tissue conditions by splitting radiation into sample and reflector arms, establishing an interference pattern, and comparing it to reference patterns to determine tissue abnormalities such as pressure ulcers or deep tissue injuries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional visual inspection methods are used to assess tissue conditions, then the assessment process is simple and quick, but the detection precision and ability to identify early-stage abnormalities is insufficient
Solution Approach 1:
The patent replaces manual visual inspection with an optical measurement system using low-coherence interferometry. The system uses a light source, interferometer, and detector to automatically measure tissue optical properties, substituting mechanical/visual assessment with optical physics-based measurement to achieve higher precision while maintaining operational simplicity
Solution Approach 2:
The patent introduces an interferometric measurement system as an intermediary between the tissue sample and the assessment process. The system uses reference samples with known properties to calibrate and compare against test samples, providing an objective intermediate reference framework that enhances detection precision without requiring complex direct measurement
2Reliability
If early detection of pressure ulcers and deep tissue injuries is achieved through advanced methods, then the ability to identify abnormalities improves, but the time required for assessment and complexity of the process increases
Solution Approach 1:
The patent prepares reference samples with known tissue properties in advance and establishes their interferometric signatures before actual assessment. This preliminary calibration creates a reference library that enables rapid comparison and identification of abnormalities during actual assessments, improving reliability without adding time to the clinical assessment process
Solution Approach 2:
The patent focuses the interferometric measurement on specific depth ranges and optical properties most relevant to detecting pressure ulcers and deep tissue injuries. By concentrating measurement resources on the most critical parameters rather than进行全面 characterization, the system achieves high reliability for specific clinical indications while maintaining quick assessment times
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 early and accurate identification of tissue abnormalities, allowing for timely intervention and potentially preventing life-threatening conditions.
Implementation Method 1
A method uses a source of coherent electromagnetic radiation, for example, a low coherence light source
Implementation Method 2
A beamsplitter splits the incident electromagnetic radiation into a sample arm and a reflector arm
Implementation Method 3
Interference between sample-scattered electromagnetic radiation and reflector-reflected electromagnetic radiation establishes an interference pattern associated with the sample
Implementation Method 4
A detector detects the interference pattern
Data Source
AI summary
A method of assessing a tissue sample includes the steps of:1) splitting source electromagnetic radiation into:a) sample arm radiation directed in a Z direction toward a sample thereby illuminating the sample at a first selected XY coordinate pair of the sample, andb) reflector arm radiation directed toward a reflector so that the reflector arm radiation travels a path length;2) interfering sample-scattered electromagnetic radiation with reflector-reflected electromagnetic radiation thereby establishing an interference pattern associated with the sample;3) comparing the sample interference pattern to a reference interference pattern; and4) reaching a conclusion about the sample based on the comparison.