Optical Probe With Inclined Light Path For Tissue Contact
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Solution Overview
Problem
Existing optical measurement probes face challenges in stabilizing contact with body tissue and preventing undesired light from interfering with measurements, leading to inaccurate results and potential tissue damage.
Innovation Solution
The probe features a transparent rod with a perpendicular leading end face and an optical member where the base end face abuts the optical fibers, ensuring the light emitted from the irradiation fiber passes through an inclined path, preventing direct incidence on light-receiving fibers and maintaining stable contact with the body tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the leading end face of the rod is notched with an inclination to prevent undesired light from reaching the light-receiving fiber, then measurement precision is improved, but the contact stability with body tissue deteriorates
Solution Approach 1:
The probe is divided into two functional segments: the optical member with an inclined base end face for preventing undesired light, and the leading end face that maintains perpendicularity for stable tissue contact. This segmentation allows each part to optimize its specific function without compromise.
Solution Approach 2:
The optical member introduces asymmetry in the light path geometry by having its base end face inclined relative to the longitudinal axis, while maintaining symmetry in the tissue-contacting leading end face. This asymmetric design within the optical member enables effective light separation while preserving stable contact.
2Measurement precision
If the leading end face of the rod is notched with an inclination to prevent undesired light interference, then measurement accuracy is improved, but the reliability of stable contact with body tissue deteriorates
Solution Approach 1:
The probe is divided into two functional segments: the optical member with an inclined base end face for preventing undesired light, and the leading end face that maintains perpendicularity for stable tissue contact. This segmentation allows each part to optimize its specific function without compromise.
Solution Approach 2:
The optical member introduces asymmetry in the light path geometry by having its base end face inclined relative to the longitudinal axis, while maintaining symmetry in the tissue-contacting leading end face. This asymmetric design within the optical member enables effective light separation while preserving stable contact.
3Measurement precision
If the light path is made inclined to prevent direct incidence on light-receiving fibers, then measurement precision is improved, but the device complexity increases
Solution Approach 1:
The solution changes the geometric parameter of the optical member by inclining its base end face relative to the longitudinal axis. This parameter change creates an inclined light path that prevents direct incidence on light-receiving fibers while adding minimal structural complexity.
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
This configuration enhances measurement accuracy by preventing undesired light interference and ensuring stable contact with the body tissue, improving the reliability and precision of optical measurements.
Implementation Method 1
Light emitted from the irradiation fiber passes through a path inclined with respect to a perpendicular line of the leading end face
Implementation Method 2
preventing direct incidence on light-receiving fibers and maintaining stable contact with the body tissue
Data Source
AI summary
A probe includes a plurality of optical fibers that includes an irradiation fiber and a light-receiving fiber; and an optical member of which a base end face is arranged to abut on leading end faces of the optical fibers, and a leading end face is exposed to an outer side. The leading end face of the optical member is perpendicular to a longitudinal direction of the probe. Light emitted from the irradiation fiber passes through a path inclined with respect to a perpendicular line of the leading end face.