Laser Ablation for Cochlear Bone Thinning and Optical Imaging
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Solution Overview
Problem
Current methods for intracochlear imaging are hindered by the highly scattering cochlear bone, making it difficult to visualize and diagnose inner ear structures, particularly in humans, due to signal loss and image blurring, with existing techniques limited to post-mortem analysis and crude therapeutics for hearing loss.
Innovation Solution
A method and system utilizing laser ablation to thin the cochlear bone, allowing for reduced scattering and enabling high-resolution optical imaging through the thinned area, incorporating optical coherence tomography for bone thickness measurement and integration with imaging devices for in vivo imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laser ablation is used to thin the cochlear bone, then light transmission and imaging resolution are improved, but the complexity of the procedure and potential damage to surrounding tissues increase
Solution Approach 1:
The laser ablation process is divided into multiple sequential steps with different laser parameters. First, a preliminary ablation creates an initial opening, then a second ablation with adjusted parameters thins the bone to the optimal thickness for imaging. This segmentation allows precise control over bone thinning while minimizing damage to surrounding tissues and reducing overall procedure complexity.
Solution Approach 2:
The method performs preliminary ablation to create an initial opening before proceeding to bone thinning. This preliminary action prepares the site by removing the dense outer bone layer, making the subsequent thinning process safer and more controllable, thereby reducing the risk of accidental perforation and simplifying the overall procedure.
2Loss of energy
If the cochlear bone is thinned to enable imaging, then light scattering is reduced and signal transmission is improved, but the risk of damaging intracochlear structures increases
Solution Approach 1:
The laser ablation process uses dynamic adjustment of laser parameters including power, pulse duration, and scanning speed. The system continuously adapts these parameters based on real-time feedback from the ablation process, allowing precise control over bone removal while automatically reducing power near critical structures to prevent damage.
Solution Approach 2:
The method incorporates optical coherence tomography (OCT) imaging during the ablation process to provide real-time feedback on bone thickness and the position of underlying intracochlear structures. This feedback loop allows the operator to monitor bone thinning in real-time and stop before damaging critical structures, thereby reducing signal loss while preventing harm.
3Ease of operation
If conventional imaging methods are used without bone thinning, then the procedure is simpler and safer, but imaging resolution and diagnostic capability are severely limited
Solution Approach 1:
The patent introduces an intermediary structure - a thinned bone window - that allows optical imaging techniques to penetrate into the cochlea. This intermediary approach combines the simplicity of non-invasive optical imaging with the diagnostic power of intracochlear visualization, avoiding the need for complex surgical procedures while achieving high-resolution imaging.
Solution Approach 2:
The method changes the physical parameter of bone thickness to enable imaging. By controlling the bone thickness to a specific range through laser ablation, the optical properties of the bone are modified to allow sufficient light transmission while maintaining structural integrity. This parameter change transforms the bone from an imaging barrier to an imaging-enabling structure.
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 high-resolution imaging of intracochlear structures by reducing light scattering and enhancing photon transmission, facilitating cellular-level diagnosis and treatment monitoring for hearing loss.
Implementation Method 1
irradiating a cochlear bone with a first laser light to ablate portions of the cochlear bone
Implementation Method 2
imaging intracochlear structures by a second light via the thinned area of the cochlear bone
Implementation Method 3
Bone thinning would allow a significant reduction of the scattering limitations, which include signal loss and image blurring
Data Source
AI summary
A method for visualizing structures inside a cochlea, comprising the steps of irradiating a cochlear bone with a first laser light to ablate portions of the cochlear bone, to form a thinned area of the cochlear bone, and imaging intracochlear structures by a second light via the thinned area of the cochlear bone to optically scan targeted structures inside the cochlea.