Mobile Perception Device 3D Localization in Surgical Navigation
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Solution Overview
Problem
Standard navigation systems for surgical operations, such as orthopedic surgeries, rely on fixed infrared markers and cameras, which are cumbersome and require a fixed line of sight, limiting mobility and increasing costs.
Innovation Solution
A method utilizing mobile perception devices like connected glasses, smartphones, or tablets equipped with sensors and augmented reality displays that eliminate the need for additional fixed reference markers by processing successive images to calculate the relative position of the device and the surgical site, incorporating visual odometry and SLAM algorithms to determine device movement and environment mapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard navigation systems use fixed infrared markers and cameras, then 3D localization accuracy is achieved, but device complexity and operational constraints increase
Solution Approach 1:
The patent extracts and eliminates the fixed reference markers from the navigation system, replacing them with a mobile perception device that uses visual odometry and SLAM algorithms to achieve localization without external markers, thereby simplifying the system while maintaining accuracy
Solution Approach 2:
The mobile perception device performs self-localization using its own sensors (cameras, IMUs, LiDAR) and algorithms (visual odometry, SLAM), eliminating the need for external fixed markers and reducing system complexity while maintaining measurement precision
2Measurement precision
If fixed reference markers are used for navigation, then localization precision is maintained, but ease of operation and mobility are reduced
Solution Approach 1:
The patent transitions from a static fixed-marker system to a dynamic mobile perception device that can move freely throughout the surgical environment, maintaining localization precision through continuous visual odometry and SLAM computations while significantly improving operational flexibility
Solution Approach 2:
The patent replaces the mechanical fixed-marker infrastructure with an optical-computational system using mobile devices, cameras, and algorithms, eliminating physical constraints and improving ease of operation while preserving measurement precision
3Measurement precision
If multiple fixed markers and cameras are deployed, then tracking accuracy is achieved, but loss of substance and costs increase
Solution Approach 1:
The mobile perception device performs multiple functions (localization, mapping, navigation) using a single integrated platform with multiple sensors, replacing the need for multiple separate fixed markers and cameras, thereby reducing material costs while maintaining tracking accuracy
Solution Approach 2:
The patent uses virtual representations and algorithms (visual odometry, SLAM) to create computational models of the environment and device position, replacing physical markers with their digital equivalents, thus reducing material consumption while preserving measurement precision
Data Source
AI summary
The method of locating at least one mobile perception device of a navigation platform, the mobile perception device intended to be worn or carried by a user in a surgical scene, the navigation platform including at least one perception sensor, comprises: —acquiring, by the at least one perception sensor, a plurality of successive images of the scene including the portion of the body of the patient intended to be subjected to the surgical operation; —processing the plurality of successive images to evaluate a relative position of the mobile perception device and the portion of the body intended to be subjected to the surgical operation, wherein the relative position of the mobile perception device and the portion of the body takes into account a movement of the mobile perception device.