Chair-Based Field Generator for ENT Navigation
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Solution Overview
Problem
Current ENT procedures, such as balloon sinuplasty, face challenges in precise instrument positioning due to limited 2D endoscopic views, especially when anatomical landmarks are difficult to visualize, necessitating the integration of image-guided surgery systems for enhanced precision.
Innovation Solution
A dilation catheter system incorporating a guidewire with optical fibers for transillumination and an image-guided surgery navigation system using electromagnetic fields to provide real-time, 3D visualization of instrument positioning within the patient's anatomy, supported by a customizable chair-based field generator assembly to minimize metallic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a variable direction view endoscope is used to provide visualization within the anatomical passageway, then viewing capability is improved, but the ability to provide additional visual confirmation of proper balloon positioning is limited
Solution Approach 1:
The patent combines multiple visualization methods (endoscope, illuminating guidewire with light source, and image-guided surgery system) into a single integrated system. The illuminating guidewire merges optical illumination with positional tracking capabilities, allowing simultaneous visualization of anatomical structures and confirmation of instrument positioning through multiple modalities.
2Measurement precision
If an illuminating guidewire is used to provide visual confirmation of guidewire positioning, then positioning accuracy is improved, but the ability to confirm balloon positioning before inflation is insufficient
Solution Approach 1:
The patent implements feedback mechanisms through the image-guided surgery system that provides real-time visual feedback on balloon positioning. The system correlates the position of the illuminating guidewire and balloon with preoperative imaging data, allowing the surgeon to verify correct balloon placement before inflation through continuous positional monitoring and visual feedback displayed on monitors.
3Measurement precision
If image-guided surgery is integrated to provide real-time correlation of instrument location, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into unified components. The guidewire serves both as an illuminating element and as a tracker for the image-guided surgery system. The balloon catheter integrates dilation function with embedded positioning sensors. This multi-functionality reduces the need for separate devices while maintaining high positioning precision through the image-guided system.
4Adaptability or versatility
If a chair-based field generator assembly is used to support image-guided surgery systems, then adaptability to different procedure setups is improved, but metallic interference may affect electromagnetic field generation
Solution Approach 1:
The patent extracts the field generators from traditional floor-standing or ceiling-mounted configurations and relocates them to a chair-based assembly. This separation removes the electromagnetic field generation system from potential metallic interference sources in the operating room environment. The chair-based assembly uses non-metallic construction materials to minimize interference while maintaining adaptability to different procedure setups.
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
The system enables precise and accurate positioning of dilation instruments within the patient's anatomy, improving procedural accuracy and safety by integrating optical feedback and real-time 3D imaging with the chair-based support for field generators.
Implementation Method 1
A dilation catheter system incorporating a guidewire with optical fibers for transillumination
Implementation Method 2
a plurality of field generating elements supported by the frame, wherein the field generating elements are configured to generate an electromagnetic field around a patient's head
Data Source
AI summary
An apparatus includes a body, an upright member, a frame, and a plurality of field generating elements. The body is configured to be positioned between a patient's back and a backrest of a chair. The upright member extends upwardly from the body. The frame has a curved configuration configured to partially surround a patient's head. The field generating elements are configured to generate an electromagnetic field around a patient's head partially surrounded by the frame.