Surgical Tracking System for Minimally Invasive Spine Surgery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current minimally invasive spine surgery techniques rely heavily on radiographic imaging, which increases radiation exposure for patients and surgeons, and lacks real-time neurophysiologic information about surrounding nerves, posing challenges in precision and safety.
Innovation Solution
A surgical tracking system combining infrared position tracking and neuromonitoring to reduce reliance on fluoroscopic imaging by providing real-time 3D location data of surgical objects and nerve proximity, using IR sensors and reflective arrays to track instruments and implants, and neuromonitoring systems to detect nerve stimulation responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radiographic imaging is used to guide minimally invasive spine surgery, then surgical precision is improved, but radiation exposure increases
Solution Approach 1:
The system creates a virtual copy of the patient's anatomy using pre-operative imaging data (CT or MRI) to build a three-dimensional navigation model. This virtual model is then overlaid with real-time tracking data of surgical instruments, allowing the surgeon to navigate precisely without repeated fluoroscopic imaging. The virtual model serves as a radiation-free substitute for continuous radiographic guidance.
Solution Approach 2:
The system replaces the mechanical/radiographic imaging system with an optical tracking system. Instead of using fluoroscopy (radiographic imaging) to visualize instruments and anatomy, the system uses infrared cameras and reflective markers to optically track instrument positions and superimpose them on the virtual anatomical model, eliminating radiation exposure while maintaining surgical precision.
2Measurement precision
If traditional open surgical techniques are used, then surgical precision and direct visualization are improved, but tissue trauma increases
Solution Approach 1:
The system creates a virtual three-dimensional copy of the patient's spinal anatomy using pre-operative imaging data. This virtual model provides comprehensive visualization of anatomical structures, nerve roots, and surgical targets without requiring the surgeon to physically expose and directly visualize the surgical site through large incisions, thereby maintaining precision while minimizing tissue trauma.
Solution Approach 2:
The system replaces the mechanical approach of physical exposure and direct visualization with an optical/digital visualization system. Infrared cameras track reflective markers on instruments and the virtual anatomical model is displayed on screens, providing comprehensive visualization without the need for large incisions and extensive tissue displacement required in open surgery.
3Object-affected harmful factors
If 3D navigation systems are used to reduce radiographic imaging, then radiation exposure is reduced, but system complexity increases
Solution Approach 1:
The 3D navigation system integrates multiple functions into a unified platform: it imports and processes pre-operative imaging data, generates three-dimensional anatomical models, tracks surgical instruments using optical markers, superimposes virtual anatomy with real-time instrument positions, and provides guidance throughout the procedure. This multi-functional integration reduces the need for separate systems while managing complexity through consolidation.
Solution Approach 2:
The system introduces a computer as an intermediary that automatically performs complex tasks: importing imaging data, generating three-dimensional models, tracking instrument positions via optical markers, and superimposing virtual anatomy with real-time data. This intermediary handles the computational complexity, allowing the surgical team to focus on clinical decision-making rather than managing system complexity directly.
4Object-generated harmful factors
If minimally invasive techniques are used, then tissue trauma is reduced, but reliance on radiographic imaging increases
Solution Approach 1:
The system creates a comprehensive virtual model that copies not only the anatomical structures visible on standard radiographic imaging but also integrates neurophysiologic data. This virtual model provides a complete information set including nerve locations and neurophysiologic status, eliminating the need for repeated radiographic imaging while maintaining minimal tissue trauma.
Solution Approach 2:
The system merges multiple information sources into a unified three-dimensional navigation model: pre-operative anatomical imaging (CT or MRI), real-time optical tracking of instruments, and intraoperative neurophysiologic monitoring data. This integration consolidates all necessary information including neurophysiologic data into a single comprehensive display, eliminating the need for separate radiographic imaging and providing complete information guidance for minimally invasive surgery.
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
This system minimizes radiation exposure, enhances surgical precision by providing real-time nerve mapping, and reduces tissue trauma by avoiding nerve damage during procedures.
Implementation Method 1
an infrared (IR) position sensor, an IR-reflective tracking array attached to an intraoperative imaging system, and at least one IR-reflective tracking array attached to at least one surgical object
Implementation Method 2
The neuromonitoring system includes instruments capable of stimulating the peripheral nerves of a patient and additional instruments capable of recording the evoked neuromuscular responses
Data Source
AI summary
The present application includes a position tracking system for tracking the location of surgical objects within the surgical field, a neuromonitoring system for detecting the existence of (and optionally the distance and/or direction to) neural structures during a surgical procedure, and a processing system communicatively linked to both the position tracking system and the neuromonitoring system.