Selective Spectral Illumination for Optical Image Guided Surgery
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Solution Overview
Problem
Current surgical illumination systems interfere with optical imaging modalities during surgery, requiring significant dimming or complete darkness, which increases surgical risks and costs due to prolonged anesthesia times.
Innovation Solution
A system for selective spectral illumination that uses a controller to manage light sources emitting electromagnetic radiation at various wavelengths, allowing for independent spectral bands for optical imaging systems while maintaining adequate illumination for surgical personnel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If broadband illumination sources are used for surgical lighting, then adequate illumination for surgical personnel is achieved, but spectral interference with optical imaging systems occurs
Solution Approach 1:
The broadband spectrum is segmented into multiple discrete wavelength bands. The illumination system selectively activates only those wavelength bands that do not interfere with the optical imaging system's detection band, while still providing sufficient overall illumination for surgical personnel.
Solution Approach 2:
Different regions of the spectrum are assigned different qualities/functions. The wavelengths used by the optical imaging system are reserved for detection, while other wavelengths are used for illumination, creating a localized spectral allocation that eliminates interference.
2Object-affected harmful factors
If broadband illumination is dimmed or turned off during optical imaging, then spectral interference is reduced, but surgical workflow and team visibility are impaired
Solution Approach 1:
The illumination spectrum is divided into multiple wavelength segments. During optical imaging, only the non-interfering segments are activated, while interfering segments are suppressed. This segmentation allows continuous illumination without spectral interference.
Solution Approach 2:
The spectral parameters of the illumination source are dynamically changed based on the operational state of the optical imaging system. When imaging is active, the illumination spectrum is modified to exclude the detection band, eliminating interference while maintaining visibility.
3Measurement precision
If complete darkness is used during optical imaging acquisition, then signal-to-noise ratio is improved, but patient safety and surgical efficiency are compromised due to prolonged anesthesia
Solution Approach 1:
The spectrum is segmented to separate the imaging detection band from the illumination bands. This allows simultaneous operation of both illumination and imaging without the need for complete darkness, maintaining patient safety while achieving adequate signal quality.
Solution Approach 2:
The potential harm of broadband illumination interference is converted into a benefit by selectively using only the non-interfering portions of the spectrum. This transforms the constraint into an opportunity for simultaneous illumination and imaging.
4Measurement precision
If exogenous dyes are used for optical contrast, then tissue differentiation is improved, but additional surgical steps and potential complications are introduced
Solution Approach 1:
The system uses endogenous optical properties of tissue (inherent spectral characteristics) rather than requiring exogenous contrast agents. The tissue itself provides the contrast through its natural interaction with different wavelength bands, eliminating the need for additional dye administration steps.
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 concurrent use of optical imaging systems and surgical illumination without spectral interference, reducing surgical risks and costs by minimizing the need for prolonged darkness during procedures.
Implementation Method 1
at least one light source disposed within the housing, the at least one light source configured to emit electromagnetic radiation at a plurality of wavelengths
Implementation Method 2
a controller coupled to the at least one light source and configured to control the at least one light source to emit electromagnetic radiation at one or more of the plurality of wavelengths based on a status of operation of an optical imaging system
Data Source
AI summary
A system for selective spectral illumination in an operating room includes a housing, at least one light source disposed within the housing, the at least one light source configured to emit electromagnetic radiation at a plurality of wavelengths, and a controller coupled to the at least one light source and configured to control the at least one light source to emit electromagnetic radiation at one or more of the plurality of wavelengths based on a status of operation of an optical imaging system in the operating room.