Endoscope Hood Light Blocking Member
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Solution Overview
Problem
Existing endoscope systems lack an efficient mechanism to uniformly irradiate lesions with therapeutic light while preventing interference with observation optics.
Innovation Solution
An endoscope hood system with an optical fiber for guiding therapeutic light, an observation optical system, a pressing section with a pressing surface for uniform tissue irradiation, and an internal light blocking member to prevent therapeutic light from entering the observation path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If therapeutic light is transmitted through the pressing section to irradiate tissue, then treatment effectiveness is improved, but the light may enter the observation optical system and interfere with tissue observation
Solution Approach 1:
The hood is divided into functionally distinct sections: a pressing section for light transmission and treatment, and an observation section with optical systems. This segmentation allows therapeutic light to be directed through the pressing section while the observation section remains protected from light interference, enabling simultaneous treatment and observation without mutual interference.
Solution Approach 2:
The hood structure acts as an intermediary element between the light source and the observation optical system. It selectively transmits therapeutic light through the pressing section to the tissue while blocking or directing light away from the observation optical system, thus mediating between treatment requirements and observation clarity.
2Manufacturing precision
If a cap with convex lens is used to uniformly irradiate lesion tissue, then treatment uniformity is improved, but the structure does not provide integrated observation capability
Solution Approach 1:
The invention merges multiple functions into a single integrated hood structure: therapeutic light transmission, uniform irradiation via the pressing section geometry, and optical observation. This combination allows the system to achieve both treatment uniformity and observation capability simultaneously, eliminating the need for separate devices.
Solution Approach 2:
The hood is designed as a multi-functional device that performs both treatment and observation functions. The pressing section provides uniform light distribution for effective treatment, while the observation optical system enables real-time tissue monitoring, making the device universally applicable for both therapeutic and diagnostic purposes.
3Productivity
If the distal end of the optical fiber is positioned close to the tissue for effective irradiation, then treatment efficiency is improved, but therapeutic light may scatter into the observation path
Solution Approach 1:
The hood employs local quality differentiation where the pressing section has specific optical properties for efficient light transmission to the tissue, while the observation section has different optical characteristics to prevent scattered light from entering. This local differentiation allows close positioning of the optical fiber for efficient treatment while protecting the observation path from light scattering.
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 reliable and uniform irradiation of deep tissue lesions with therapeutic light, while maintaining clear observation of the tissue during treatment, thus enhancing the effectiveness of light treatment procedures.
Implementation Method 1
an optical fiber that optically guides therapeutic light with which biological tissue is to be irradiated and outputs the therapeutic light from a distal end
Implementation Method 2
an internal light blocking member disposed between a position where the distal end of the optical fiber is disposed and the light transmission section. The therapeutic light output from the optical fiber is transmittable through the pressing section. The therapeutic light output from the distal end of the optical fiber is prevented from entering the light transmission section by the internal light blocking member
Data Source
AI summary
An endoscope hood is attached to an endoscope insertion section including an optical fiber that optically guides therapeutic light with which biological tissue is to be irradiated and outputs the therapeutic light, and including an observation optical system for observing the biological tissue. The hood includes: an attachment section attached to a distal end of the endoscope insertion section; a pressing section including a pressing surface that presses against the biological tissue, the therapeutic light output from the optical fiber being transmittable through the pressing section; a transmission section disposed forward of the observation optical system, light being transmittable through the transmission section toward the observation optical system; and a blocking member disposed between a position where the distal end of the optical fiber is disposed and the transmission section, the therapeutic light output from the optical fiber being prevented from entering the transmission section by the blocking member.