See-Through 3D Surgical Navigation Interface for Instrument Alignment
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Solution Overview
Problem
Conventional surgical navigation systems require surgeons to switch their visual attention between the surgical field and a display monitor, leading to disrupted workflow and increased error in positioning surgical instruments due to the complexity of three-dimensional patient anatomy.
Innovation Solution
A surgical navigation system with a see-through screen and tracking system that overlays virtual representations of patient anatomy and surgical instruments directly onto the surgical field, allowing real-time alignment and guidance of instruments based on pre-operative plans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a display monitor is placed outside the surgical field, then the surgical navigation system can provide pre-operative planning and image-guided navigation, but the surgeon's visual attention must switch between the surgical field and the monitor, disrupting workflow
Solution Approach 1:
The patent merges the display monitor with the surgical field by integrating the display screen into the surgical site, allowing surgical navigation images to be displayed directly at the surgical field rather than on a separate monitor, thereby eliminating the need for visual attention switching and workflow disruption
Solution Approach 2:
The patent introduces a see-through display screen as an intermediary that allows simultaneous viewing of both the surgical field and the navigation images, acting as a mediator that combines the functions of direct surgical visualization and navigation information display
2Loss of information
If conventional 2D monitor display is used, then the navigation system can show surgical information, but it is difficult for the surgeon to simultaneously position and orient the surgical instrument in three-dimensional space
Solution Approach 1:
The patent transitions from 2D monitor display to 3D spatial display by projecting surgical navigation images directly into the three-dimensional surgical field, enabling the surgeon to perceive instrument position and orientation in three dimensions and improving positioning accuracy
Solution Approach 2:
The patent uses color-coded visual indicators to represent different spatial dimensions and instrument parameters in the three-dimensional display, allowing the surgeon to quickly interpret complex spatial information through color differentiation
3Measurement precision
If the surgeon relies on monitor information alone, then the navigation data can be displayed, but it is difficult to control the three-dimensional position and orientation of the surgical instrument with respect to patient anatomy
Solution Approach 1:
The patent combines navigation data display with direct visual feedback in the surgical field, merging the information from tracking systems and pre-operative plans with the real-time surgical view to provide intuitive control guidance
Solution Approach 2:
The patent implements real-time visual feedback by continuously updating the three-dimensional display with current instrument position and orientation data, allowing the surgeon to immediately see the effect of instrument movements and make precise adjustments
Data Source
AI summary
A surgical navigation system can include a three-dimensional (3D) display system with a see-through screen; a tracking system configured to track the position and orientation of a surgeon's head, the see-through screen, a patient anatomy and a medical device to provide current position and orientation data; data associated with an operative plan, patient anatomy, and/or the medical device; a surgical navigation image generator configured to generate a surgical navigation image with a three-dimensional image including a first virtual image indicating the planned position and orientation of the medical device according to the operative plan data and a second virtual image indicating a current position and orientation of the medical device.