Round Window Cochlear Delivery to Reach Auditory Nerve Structures
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Solution Overview
Problem
Current treatments for sensorineural hearing loss, particularly due to auditory nerve damage or dysfunction, are limited by the inaccessibility and complexity of the human cochlea, which hampers the delivery of therapeutic agents to the neural structures within.
Innovation Solution
A method is developed to safely and effectively administer therapeutic agents, such as stem cells or pharmaceutical compounds, directly into the Rosenthal's Canal or Canalis Cochlearis of the cochlea via the Round Window membrane, using a minimally invasive surgical approach guided by advanced imaging and modeling techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional surgical approaches are used to access cochlear neural structures, then therapeutic agents can be delivered to the target site, but the procedure becomes highly invasive with significant risk to surrounding structures
Solution Approach 1:
The patent applies preliminary action by using advanced imaging techniques (micro-CT, MRI) and 3D computational modeling to map the precise anatomical relationships between the round window membrane and underlying neural structures (Rosenthal's canal, cochlear nerve) before surgery. This pre-surgical planning allows surgeons to identify optimal access pathways and avoid critical structures during the actual procedure, thereby improving safety while maintaining accessibility.
Solution Approach 2:
The patent uses the round window membrane as an intermediary structure to access deep cochlear neural structures. Instead of directly exposing the cochlear nerve through invasive bone removal, the membrane serves as a natural window that can be surgically accessed and used to deliver therapeutic agents to the underlying Rosenthal's canal and cochlear nerve, significantly reducing surgical trauma and risk to surrounding structures.
2Ease of manufacture
If the cochlea is accessed through highly invasive surgical procedures, then therapeutic delivery is possible, but the complexity and risk of the procedure increases significantly
Solution Approach 1:
The patent makes the round window membrane a multi-functional structure. It serves its normal physiological function as a pressure equalization membrane while simultaneously serving as a surgical access portal for delivering therapeutic agents to deep cochlear structures. This eliminates the need for separate, complex surgical approaches and reduces overall procedural complexity.
Solution Approach 2:
The patent transitions from traditional two-dimensional surgical views to three-dimensional anatomical mapping and navigation. By using 3D computational models derived from micro-CT and MRI data, surgeons can visualize and plan access pathways in three dimensions, identifying optimal trajectories through the round window membrane to reach target structures while avoiding complications.
3Loss of information
If conventional imaging modalities are used to visualize cochlear structures, then general orientation is possible, but the microscopic structures cannot be resolved
Solution Approach 1:
The patent replaces conventional mechanical imaging approaches with advanced non-invasive imaging technologies. Micro-CT provides high-resolution three-dimensional anatomical data, while diffusion tensor imaging (DTI) uses magnetic resonance principles to visualize neural fiber tracts. These imaging modalities substitute traditional surgical exploration and low-resolution imaging, providing detailed visualization of microscopic cochlear structures without mechanical intrusion.
Solution Approach 2:
The patent changes the physical parameters of imaging to achieve higher resolution. Micro-CT uses X-ray attenuation measurements at multiple angles to reconstruct three-dimensional images with micrometer-scale resolution. DTI measures water diffusion anisotropy along neural fibers to map cochlear nerve pathways. These parameter changes in imaging physics enable visualization of structures too small for conventional imaging.
Data Source
AI summary
A method for the treatment of an auditory disease or condition in a human subject is provided comprising administering a therapeutic agent into a bony cavity of a cochlea of the subject that contains neural structures via the Round Window membrane of the cochlea. Also provided are therapeutic agents for use in such methods, as well as method for the delivery of therapeutic agents via the Round Window membrane of the cochlea.