AR Surgical Guidance With Head-Mounted Implant Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Surgeons face challenges in hand-eye coordination during surgical procedures due to the difference between the surgical field's view coordinate system and external computer monitors, which can complicate the registration of patient anatomy and imaging data.
Innovation Solution
The use of an optical head-mounted display (OHMD) that provides augmented or virtual reality for superimposing virtual implant components onto the patient's joint, maintaining alignment during movement, and displaying normal/abnormal joint motions, allowing for real-time adjustments and corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If external computer monitors are used to display imaging studies, then surgical guidance information can be provided, but hand-eye coordination becomes challenging due to coordinate system differences between the monitor and surgical field
Solution Approach 1:
The patent introduces an optical head-mounted display (OHMD) as an intermediary device between the surgeon and the surgical field. The OHMD superimposes virtual surgical guides, implant components, and anatomical landmarks directly onto the surgeon's view of the patient's anatomy, eliminating the need to transfer gaze between external monitors and the surgical site. This mediator integrates multiple information sources (imaging studies, real-time anatomy, surgical guides) into a single unified visual interface that maintains natural hand-eye coordination.
2Manufacturing precision
If virtual implant components are superimposed onto the patient's joint, then surgical precision is enhanced, but the complexity of the surgical navigation system increases
Solution Approach 1:
The optical head-mounted display serves multiple functions simultaneously: it displays virtual implant components, shows real-time anatomical landmarks, provides surgical guidance overlays, and maintains spatial registration with the patient's anatomy. By consolidating these multiple functions into a single wearable device rather than requiring separate external systems for each function, the overall system complexity is reduced while maintaining enhanced surgical precision.
Solution Approach 2:
The system uses different colors to represent various surgical information layers: virtual implant components, anatomical landmarks, surgical guides, and motion paths. This color-coding system allows the surgeon to quickly distinguish between different types of information superimposed on the surgical field, reducing cognitive load and making the complex multi-layer display intuitive and easy to interpret.
3Measurement precision
If the display maintains alignment with the patient's joint during movement, then accurate real-time guidance is provided, but the computational requirements and system complexity increase
Solution Approach 1:
The system continuously tracks the position and orientation of the patient's joint and the OHMD device, providing real-time feedback to maintain accurate spatial registration. Sensors and cameras monitor anatomical landmarks and update the virtual overlay position dynamically, ensuring that surgical guides and implant components remain correctly aligned with the patient's anatomy during movement. This closed-loop feedback system maintains precision without requiring overly complex manual registration procedures.
Data Source
AI summary
Aspects of the present disclosure relate to systems, devices and methods for performing a surgical step or surgical procedure with visual guidance using an optical head mounted display. Aspects of the present disclosure relate to systems, devices and methods for displaying, placing, fitting, sizing, selecting, aligning, moving a virtual implant on a physical anatomic structure of a patient and, optionally, modifying or changing the displaying, placing, fitting, sizing, selecting, aligning, moving, for example based on kinematic information.