Compact Optical Tracking System for Mobile Surgical Navigation
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Solution Overview
Problem
Conventional navigation systems in surgical settings are bulky, prone to damage, and require complex setup, often failing to provide accurate real-time data due to occlusions and environmental factors, and lack the capability for deterministic wireless communication necessary for high-speed control systems.
Innovation Solution
A compact optical tracking system that communicates directly with a tablet via wireless means, integrating sensors and processing units to compute the position and orientation of markers, with a deterministic wireless packet transmission system ensuring high sampling rates and low latency, and includes a sterile drape fixation mechanism to maintain accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional navigation cart is used, then the system provides navigation capability, but the system becomes bulky and prone to damage
Solution Approach 1:
The navigation system is divided into separate modular components: a compact optical tracking unit with sensors and processing, a separate display unit (tablet), and wireless communication modules. This segmentation allows each component to be optimized independently, reducing overall system bulk while maintaining functionality and improving reliability through modular design.
Solution Approach 2:
The display and user interface functions are extracted from the navigation cart and implemented on a separate tablet device. This extraction eliminates the need for a bulky integrated cart, allowing the optical tracking system to be compact and mobile while the display unit provides the necessary interface functionality independently.
2Ease of operation
If a compact mobile tracking system is used, then the system reduces damage risk and improves mobility, but wireless communication may lack deterministic transmission for high-speed control
Solution Approach 1:
The system employs dynamic resource allocation and adaptive communication protocols that adjust transmission priorities and bandwidth allocation based on real-time surgical needs. This allows the wireless system to provide deterministic low-latency communication when high-speed control is required while maintaining flexibility for other operations, thus achieving both mobility and communication reliability.
3Measurement precision
If sensors and processing units are integrated in the tracking system, then real-time data accuracy improves, but device complexity increases
Solution Approach 1:
The optical sensors, processing unit, and wireless communication modules are merged into a single integrated optical tracking unit. This consolidation enables real-time data processing and accurate tracking measurements while simplifying the overall system architecture compared to distributed configurations, as the integrated unit operates as a cohesive system with shared resources and synchronized operations.
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 precise, real-time navigation and sensor fusion without the need for a conventional navigation cart, reducing the risk of damage and improving data accuracy by integrating sensors and processing units within the tracking system, ensuring reliable communication and maintaining precision in sterile environments.
Implementation Method 1
an Optical Tracking System 10 which is able to sense Fiducials 21 located on Markers 20 via Optical Sensors 11
Data Source
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AI summary
The optical tracking system for mobile surgical navigation generally includes An Optical Tracking System {10} which is able to sense Fiducials (21) located on Markers (20) via Optical Sensors (11). The Optical Tracking System has processing means to compute the pose (position + translation) of the Markers (2.0) and transfer them to a Tablet computer (40) via Communication Means (30). These metrological data are finally used by a surgical application.