Virtual Implant Alignment With Probe-Guided Surgical Navigation
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Solution Overview
Problem
Existing surgical navigation systems lack the ability to virtually plan and prepare for the placement of surgical tools and implants prior to surgery, limiting precision in robot-assisted procedures.
Innovation Solution
A surgical navigation system that uses imaging information to detect the pose of a probe and determine the placement of a virtual implant, adjusting it in alignment with the probe's longitudinal axis while maintaining trajectory, utilizing a processor and memory to execute instructions for precise implant placement and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If surgical navigation systems use traditional tracking methods with passive or active sensors, then the system can track surgical instruments with high precision, but the system lacks the ability to virtually plan and prepare for implant placement prior to surgery
Solution Approach 1:
The patent creates a virtual copy of the patient's anatomy and surgical instruments in a computer-generated environment. This virtual model allows surgeons to plan implant placement procedures before actual surgery, enabling preoperative simulation and preparation while maintaining accurate tracking of real-world instruments during the procedure.
Solution Approach 2:
The system enables preliminary virtual planning and simulation of implant placement procedures before the actual surgery takes place. Surgeons can test different approaches, optimize trajectories, and prepare surgical plans in advance using the virtual anatomical models, improving readiness and reducing intraoperative decision-making time.
2Manufacturing precision
If the system tracks probe movement in real-time to adjust virtual implant placement, then the accuracy of implant positioning is improved, but the system complexity increases due to continuous coordinate transformations and adjustments
Solution Approach 1:
The system continuously monitors the position and orientation of surgical probes through tracking sensors and provides real-time feedback by updating the virtual implant placement accordingly. This closed-loop feedback mechanism ensures that the virtual model accurately reflects the actual surgical progress, maintaining high placement accuracy through continuous coordinate transformations and adjustments.
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 virtual planning and real-time adjustment of implant placement during surgery, enhancing the accuracy and efficiency of robot-assisted procedures.
Implementation Method 1
Infrared signal based position recognition systems may use passive and/or active sensors or markers to track the objects. In passive sensors or markers, objects to be tracked may include passive sensors, such as reflective spherical balls... In active sensors or markers, the objects to be tracked include active infrared transmitters, such as light emitting diodes (LEDs), and thus generate their own infrared signals for 3D detection.
Data Source
AI summary
Methods may be provided to operate an image-guided surgical system using imaging information for a 3-dimensional anatomical volume. A pose of a probe that defines a longitudinal axis may be detected based on information received from a tracking system. A placement of a virtual implant for the 3-dimensional anatomical volume may be determined based on the pose of the probe and based on an offset from an end of the probe along the longitudinal axis, such that a trajectory of the virtual implant is in alignment with the longitudinal axis of the probe in the pose. After determining the placement of the virtual implant, the virtual implant may be adjusted in response to movement of the probe while maintaining the trajectory of the virtual implant.