AR Operative Guidance Overlay for Continuous Anatomical Alignment
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Solution Overview
Problem
Surgical workflows often rely on traditional two-dimensional imaging or generic three-dimensional models that lack responsive alignment to the physical patient, leading to inaccurate incisions, tissue trauma, and suboptimal implant placement, particularly in surgeries involving trauma, fractures, or anatomical anomalies, where precise spatial understanding is critical.
Innovation Solution
A wearable augmented reality interface device with sensors and computing capabilities that generate and render an operative guidance overlay, dynamically aligning virtual anatomical models with the patient and operative instruments in real-time, using sensor data and image data to provide continuous alignment and guidance markers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional two-dimensional imaging or generic three-dimensional models are used for surgical guidance, then device complexity is reduced, but manufacturing precision and measurement precision deteriorate due to lack of responsive alignment with physical patient anatomy
Solution Approach 1:
The system creates a virtual copy (digital twin) of the patient's anatomy from medical imaging data that can be dynamically aligned with the physical patient. This virtual model serves as a responsive reference that updates in real-time during surgery, providing accurate anatomical localization without requiring complex physical measurement tools.
Solution Approach 2:
The augmented reality interface acts as an intermediary between the preoperative planning data and the intraoperative physical anatomy. It overlays virtual anatomical models onto the real patient view, enabling surgeons to see both the physical anatomy and virtual guidance simultaneously, thus resolving the mismatch between planning and execution.
2Device complexity
If traditional two-dimensional imaging or generic three-dimensional models are used for surgical guidance, then device complexity is reduced, but surgery duration increases due to approximations and intraoperative corrections
Solution Approach 1:
The system performs comprehensive surgical planning and anatomical modeling before surgery, creating a detailed virtual model that guides all surgical decisions in advance. This preoperative preparation includes defining incision locations, implant positions, and surgical pathways, eliminating the need for intraoperative approximations and corrections.
3Measurement precision
If detailed multi-layered anatomical information is incorporated into surgical guidance, then manufacturing precision and measurement precision improve, but device complexity increases
Solution Approach 1:
The anatomical model is segmented into multiple layers representing different tissue types and structures (bone, muscle, organs, vessels). Each layer can be independently visualized and manipulated in the augmented reality interface, allowing surgeons to focus on specific anatomical structures without being overwhelmed by the complexity of the entire model.
4Measurement precision
If virtual anatomical models are continuously aligned with physical patient anatomy in real-time, then manufacturing precision and measurement precision improve, but use of energy and computational resources increases
Solution Approach 1:
The system maintains continuous alignment between virtual anatomical models and physical patient anatomy throughout the surgical procedure. Real-time sensor data from tracking systems updates the virtual model position and orientation, ensuring consistent spatial correspondence without requiring repeated recalibration or interrupting the surgical workflow.
Data Source
AI summary
Embodiments for rendering an operative guidance overlay in association with a patient are disclosed. A method includes receiving image data indicating an anatomical structure of the patient and a structure of operative instruments; generating virtual models based on the image data; receiving sensor data associated with a user, the operative instruments, or the patient; dynamically generating guidance overlay data associated with the anatomical structure of the patient, or the operative instruments based on the virtual models and the sensor data; and rendering the operative guidance overlay in association with the patient based on the guidance overlay data using a wearable augmented reality interface device. The virtual models include a virtual anatomical model of the anatomical structure of the patient, or virtual instrument models associated with the operative instruments. The rendering comprises continuous alignment of the virtual anatomical model with the patient and the virtual instrument models with the operative instruments.