Surgical Instrument Navigation with Split-Window Deviation Feedback
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Solution Overview
Problem
Existing surgical navigation systems are specific to individual orthopedic replacement systems, lack intuitive deviation feedback, and struggle with flexible integration of diverse surgical instruments, leading to non-optimal implant positioning and limited surgical precision.
Innovation Solution
A method and system that generate multiple virtual representations of surgical instruments relative to a pre-operative plan in separate parts of a split window, using trackers and attachment components to track and calibrate instruments of arbitrary shape, allowing real-time data integration and flexible adaptation to any orthopedic replacement system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a surgical navigation system is designed to be specific to individual orthopedic replacement systems, then measurement precision and manufacturing precision are improved, but adaptability and device complexity are worsened
Solution Approach 1:
The patent applies universality by creating a single navigation system that can accommodate multiple orthopedic replacement systems through a standardized tracker interface. The attachment component with universal tracker interface allows the same navigation system to work with different surgical instruments and implant components, eliminating the need for separate navigation systems for each replacement system while maintaining positioning precision through calibrated tracking.
2Adaptability or versatility
If multiple separate navigation systems are provided for different replacement systems, then adaptability is improved, but device complexity and loss of information are worsened
Solution Approach 1:
The patent consolidates multiple navigation systems into one universal system that can interface with various orthopedic replacement systems through standardized attachment components. This single system maintains adaptability across different surgical instruments while reducing overall system complexity by eliminating the need for multiple separate navigation systems.
Solution Approach 2:
The patent uses virtual representations and digital modeling to create a virtual copy of the surgical field and implant components. This virtual environment allows the single navigation system to simulate and track multiple different replacement systems without requiring physical duplication of entire navigation systems, thereby reducing hardware complexity while maintaining adaptability.
3Adaptability or versatility
If a single navigation system is used for all replacement systems, then adaptability is improved, but measurement precision and reliability are worsened
Solution Approach 1:
The patent applies local quality by providing instrument-specific or implant-specific tracking components that are calibrated to maintain precise positioning for each particular surgical tool or implant. While the overall navigation system is universal, the tracking attachments and calibration parameters are customized for each specific instrument type, ensuring high measurement precision is maintained for each individual application.
Solution Approach 2:
The patent introduces attachment components as intermediaries between the universal navigation system and specific surgical instruments. These attachment components serve as mediators that translate the universal tracking system into instrument-specific coordinate systems through calibration, thereby maintaining measurement precision for each instrument while preserving the overall system's adaptability.
4Measurement precision
If detailed virtual representations of pre-operative plan are provided, then measurement precision is improved, but device complexity and loss of information are worsened
Solution Approach 1:
The patent segments the detailed pre-operative plan data into multiple virtual representations that can be processed and displayed separately. This segmentation allows complex 3D anatomical models, implant models, and surgical trajectory data to be handled as distinct data structures, reducing the processing complexity burden on any single system component while maintaining overall measurement precision through integrated analysis.
Data Source
AI summary
An association of a pre-operative plan and tracked position and orientation of a surgical instrument relative patient anatomy in a navigation system is generated. The pre-operative plan includes a virtual representation of the patient anatomy data. Position and orientation of the patient anatomy as well as position and orientation of the surgical instrument within the navigation system is obtained. A virtual representation of the surgical instrument relative the virtual representation of the patient anatomy data is generated in multiple orientations in separate parts of a split window. A system with a tracker comprising a tracker interface for attaching the tracker to the instrument includes a surgical navigation module for generating the virtual representation in a split window.