Integrated OCT Surgical Microscope for Intraoperative Visualization
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Solution Overview
Problem
Legacy surgical microscopes provide limited functions and reference data, making it challenging for ophthalmologists to observe tiny details during ophthalmic surgery, particularly in vitreoretinal surgery where the transparency of the vitreous body poses a challenge, and existing OCT imaging is only available pre-operatively, not intraoperatively.
Innovation Solution
A surgical microscope system with an integrated OCT imaging module, adjustable coaxial and angled lighting units, and adjustable optical spots to enhance visualization and illumination, allowing simultaneous operation of both lighting units and real-time OCT imaging during surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If legacy surgical microscope is used, then device complexity is low, but visualization capability and reference data comprehensiveness are insufficient
Solution Approach 1:
The patent combines multiple imaging modalities (optical coherence tomography, infrared imaging, visible light microscopy) into a single integrated surgical microscope system. This merging allows comprehensive reference data acquisition through multiple imaging channels while maintaining a unified device structure, resolving the contradiction between information completeness and device complexity
Solution Approach 2:
The surgical microscope system is designed to perform multiple functions simultaneously: optical coherence tomography imaging, infrared imaging, visible light microscopy, and multi-angle lighting. This multi-functionality enables comprehensive reference data provision without requiring separate devices, addressing the contradiction between information comprehensiveness and system complexity
2Illumination intensity
If single lighting unit is used, then device complexity is low, but illumination coverage and visualization quality are limited
Solution Approach 1:
The lighting system is segmented into multiple independent lighting units with different illumination angles (e.g., 0-degree coaxial lighting, 30-degree oblique lighting, 45-degree oblique lighting). Each lighting unit can be independently controlled to illuminate different areas of the surgical field, providing comprehensive coverage while maintaining manageable system complexity through modular design
Solution Approach 2:
The lighting units are designed to be dynamically adjustable, allowing real-time control of illumination angles and intensities. This dynamic capability enables adaptive illumination coverage for different surgical scenarios without requiring a fixed complex lighting structure, resolving the contradiction between illumination coverage and device complexity
3Adaptability or versatility
If fixed optical spot size is used, then device complexity is low, but adaptability to different surgical needs is poor
Solution Approach 1:
The optical spot size is made dynamically adjustable through variable aperture mechanisms and focus control systems. This allows the optical spot to be adapted to different surgical needs (e.g., larger spots for broad illumination, smaller spots for detailed work) without requiring multiple fixed optical systems, resolving the contradiction between adaptability and device 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
Enables improved visualization and illumination during ophthalmic surgery, providing enhanced contrast and broader field of view, facilitating surgeries by integrating OCT imaging and adjustable lighting to meet varying surgical needs.
Implementation Method 1
a dichroic beam splitting lens... beams from an observed object surface pass sequentially through the objective lens, the dichroic beam splitting lens
Implementation Method 2
a beam splitter... beams are then split by the beam splitter into first beams and second beams, wherein the first beams pass sequentially through the lens tube and the eyepiece set
Implementation Method 3
coaxial lighting beams emitted from the first light source pass through the first field stop, are reflected by the dichroic beam splitting lens, then pass through the objective lens, and reach the observed object surface
Implementation Method 4
form a first optical spot... form a second optical spot
Data Source
AI summary
Disclosed herein are a surgical microscope system and a surgical microscope. The surgical microscope system includes a microscope imaging module (01) and a lighting module (02), wherein: the microscope imaging module (01) includes an objective lens (11), a dichroic beam splitting lens (12), a zoom unit (13), a beam splitter (14), a lens tube (15) and an eyepiece set (16) disposed along a main optical axis (L1); the lighting module (02) includes a coaxial lighting unit (21) and an angled lighting unit (22), the coaxial lighting unit (21) includes a first light source (211) and a first field stop (212), the first field stop (212) is disposed between a first light source (211) and a dichroic beam splitting lens (12), and coaxial lighting beams emitted from the first light source (211) pass through the first field stop (212), are reflected by the dichroic beam splitting lens (12), then pass through the objective lens (11), and reach an observed object surface (M) along a direction of a main optical axis (L1) and form a first optical spot; angled lighting beams emitted from the angled lighting unit (22) are reflected by the dichroic beam splitting lens (12), then pass through the objective lens (11), and reach the observed object surface (M) along a direction including a preset angle with respect to the main optical axis (L1) and form a second optical spot; the first optical spot is adjustable in size.