Surgical Navigation System for Hip Replacement Safe Zone Visualization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current surgical navigation systems lack the ability to instantly and accurately calculate and display the safe zone for acetabular component placement during hip replacement surgery, leading to potential human errors due to intraoperative displacement of the pelvis and differences in instrument interpretation.
Innovation Solution
A surgical navigation system that includes a head-mounted device with a sensor module, processing module, and display module, utilizing visual markers to create a local coordinate system and generate a virtual image of the safe zone for acetabular component placement, applicable to all brand-name machines and instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional instruments are used to guide acetabular component placement, then the surgical procedure can be performed, but human errors occur due to intraoperative displacement of pelvis and differences in instrument interpretation
Solution Approach 1:
The patent replaces traditional mechanical measurement instruments with a navigation system that uses optical tracking cameras, visual markers, and computer processing to determine acetabular component placement angles. The system captures images of visual markers on the pelvis and surgical instruments, processes these images to calculate three-dimensional positions and orientations, and displays the safe zone for component placement, eliminating human error in measurement and interpretation.
Solution Approach 2:
The patent introduces visual markers as intermediary objects that can be reliably tracked by the navigation system. These markers are placed on the pelvis and surgical instruments to serve as reference points for the optical tracking system, enabling accurate and repeatable measurement of spatial relationships without direct human measurement or interpretation.
2Measurement precision
If post-operative X-rays are used to measure acetabular component placement, then placement accuracy can be assessed, but the process is not instantaneous and requires additional analysis time
Solution Approach 1:
The navigation system performs measurements and calculations intraoperatively during the surgical procedure itself, rather than waiting for post-operative X-rays. The system continuously tracks the position of visual markers and surgical instruments in real-time, allowing the surgeon to assess placement accuracy immediately during the operation, eliminating the time delay associated with post-operative imaging and analysis.
3Productivity
If a navigation system is implemented, then real-time visualization of safe zone can be achieved, but the system complexity increases
Solution Approach 1:
The navigation system is divided into separate functional modules: optical tracking cameras for capturing images, visual markers for providing reference points, a processing module for calculating three-dimensional positions and orientations, and a display module for visualizing the safe zone. This segmentation allows each component to perform its specific function independently, making the overall system more manageable and easier to implement while maintaining real-time capabilities.
Data Source
AI summary
A surgical navigation system (100) is provided. The surgical navigation system (100) includes: a head-mounted device (110), which includes a sensor module (111), a processing module (112), and a display module (113); and a plurality of visual markers (120), wherein three-dimensional position and orientation of each visual marker (120) is recognized and tracked by the sensor module (111), and then the processing module (112) calculates spatial conversion relationship between each visual marker (120) to create a local coordinate system, and then the display module (113) generates a virtual image. A method of using the surgical navigation system (100) to assist medical procedure is also provided.