Bone Surgery Optical Projection System for Preoperative Plan Recreation
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Solution Overview
Problem
Current methods for recreating preoperative surgical plans during bone surgery are inaccurate and cumbersome, often relying on visible or palpable landmarks, rulers, and mechanical jigs, which can lead to imprecise bone cuts.
Innovation Solution
A surgical system that uses a marker coupled with the bone, registered with a controller, and scanned by a 3D surface scanner to accurately align with preoperative images. This system tracks the bone's movement in real-time, projecting light to guide the surgeon, and utilizes modular jigs that can be customized during preoperative planning to ensure precise cuts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mechanical jigs and rulers are used to recreate preoperative plans during surgery, then the surgical process is simplified, but the precision and accuracy of bone cuts deteriorate
Solution Approach 1:
The patent uses optical projection to create a virtual copy of the preoperative surgical plan directly onto the bone surface. The controller projects alignment lines and cutting plane indicators that replicate the digital plan, eliminating the need for physical mechanical jigs while maintaining high precision through optical rather than mechanical means.
Solution Approach 2:
The patent replaces the mechanical measurement and alignment system (rulers, mechanical jigs, palpable landmarks) with an optical projection system. The controller uses computer-generated images and projected light to indicate cutting planes, substituting mechanical contact-based methods with non-contact optical visualization that provides superior precision.
2Manufacturing precision
If custom mechanical jigs are fabricated to achieve precise bone cuts, then the precision of bone cuts improves, but the time and cost required for preparation increases
Solution Approach 1:
The patent performs preliminary digital planning using preoperative imaging data to create a virtual surgical plan with precise cutting planes and alignment references. This digital preparation is completed before surgery, allowing the actual surgical procedure to proceed without time-consuming fabrication of custom mechanical jigs, as the plan is immediately available for optical projection.
Solution Approach 2:
Instead of fabricating physical custom jigs, the patent creates and projects a virtual copy of the surgical plan directly onto the bone. This digital copying approach eliminates the entire fabrication process while maintaining the precision needed for accurate bone cuts, significantly reducing preparation time and costs.
3Ease of operation
If visible or palpable landmarks are used for alignment during surgery, then the surgical procedure is simplified, but the accuracy of reproducing the preoperative plan deteriorates
Solution Approach 1:
The patent introduces an intermediary optical projection system that bridges the gap between the preoperative digital plan and the actual bone surface. Rather than relying directly on visible or palpable landmarks, the system projects virtual alignment lines and cutting plane indicators that serve as a precise intermediary reference, combining the simplicity of visual alignment with the accuracy of digital planning.
Solution Approach 2:
The patent replaces the tactile and visual landmark-based alignment system with an optical projection system. The controller projects computer-generated alignment lines and cutting plane indicators directly onto the bone surface, substituting the imprecise method of estimating locations based on landmarks with precise optical visualization that accurately reproduces the preoperative plan.
Data Source
AI summary
A surgical system is provided. The surgical system includes a camera operable to capture images and/or video. A projector is operable to project light, and a controller is communicatively coupled with the camera and the projector. The controller is operable to track movement of bone in real-time during surgery based on the images and/or video captured by the camera, and control the projector to project the light including a cutting line on the bone to indicate a cutting plane for cutting the bone during surgery.