Surgical Projection System for Bone Resection Guidance
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Solution Overview
Problem
Current orthopedic surgical procedures, such as total knee replacement, are complex and prone to errors due to the need for precise alignment and placement of components, which can lead to misalignment and eventual failure of the joint, requiring costly revisions.
Innovation Solution
A surgical guidance system that includes an image capture device, a computing device, and a projector to capture and register anatomical features, providing guidance information based on a surgical procedure plan to facilitate accurate component placement and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple cutting and alignment jigs are used to guide bone resections, then manufacturing precision of bone cuts is improved, but device complexity and surgical time increase significantly
Solution Approach 1:
The patent uses optical projection to create a virtual copy of the surgical plan directly onto the bone surface, replacing multiple physical cutting and alignment jigs. The projector displays guidance information including cut lines, drill hole locations, and implant positioning markers, allowing the surgeon to perform resections without complex mechanical guides.
Solution Approach 2:
The patent replaces the mechanical guidance system (multiple physical jigs and alignment tools) with an optical information system. Instead of using mechanical constraints to guide cuts, the system projects visual guidance information that the surgeon follows, eliminating the need for complex mechanical instrumentation.
2Manufacturing precision
If multiple cutting and alignment jigs are used to guide bone resections, then manufacturing precision of bone cuts is improved, but loss of time during surgery increases
Solution Approach 1:
The surgical plan is created preoperatively using patient-specific anatomy data, and the guidance information is prepared in advance. During surgery, the projector simply displays the pre-planned guidance information, eliminating the time-consuming steps of measuring, calculating, and assembling multiple jigs during the procedure.
Solution Approach 2:
The virtual guidance information is projected directly onto the bone surface, providing immediate visual feedback without requiring the surgeon to physically assemble and adjust multiple alignment jigs during surgery, significantly reducing surgical time while maintaining precision.
3Reliability
If complex alignment jigs are used to ensure accurate component placement, then reliability of joint function is improved, but ease of operation decreases
Solution Approach 1:
The patent projects virtual alignment guidance directly onto the bone surface, showing the surgeon exactly where to place cuts and where components should be positioned. This eliminates the need to physically attach and align complex mechanical jigs, making the procedure much easier to perform while maintaining accurate component placement.
Solution Approach 2:
The mechanical alignment system is replaced with an optical information system that provides visual guidance. The surgeon can see the desired alignment and placement directly on the bone surface without needing to manipulate complex alignment tools, significantly improving ease of operation while maintaining reliability.
Data Source
AI summary
Systems and methods for guiding a surgical procedure based on a surgical procedure plan may include an image capture device that captures one or more images of an exposed anatomical feature of a patient. These systems and methods may also include a computing device configured to receive a surgical procedure plan based on one or more desired attributes related to an anatomical 3D model representing the exposed anatomical feature of the patient. The computing device may register the anatomical 3D model to the exposed anatomical feature of the patient based on the one or more images of the exposed anatomical feature and a projector may further provide surgical guidance information to a surgeon based on the surgical procedure plan to facilitate performance of the surgical procedure.