Profiling Guide for Knee Implant Visualization
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Solution Overview
Problem
Current resection guide instrumentation for knee joint surgeries makes it difficult for surgeons to visualize the size and precise placement of unicondylar implants, leading to potential impingement issues between the tibiofemoral and patellofemoral compartments during knee replacement procedures.
Innovation Solution
A bone resection guide with a profiling guide that includes multiple outlines corresponding to different sizes of implants, a posterior referencing guide, and a distal resection guide, allowing for precise visualization and placement of femoral condylar implants to avoid impingement, with the profiling guide having a periphery that corresponds to the perimeter of the implants and a method for resecting the femur bone to receive condylar implants using these guides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current resection guide instrumentation is used, then the surgical procedure can be performed, but it is difficult to visualize the size and precise placement of unicondylar implants
Solution Approach 1:
The patent uses a profiling guide that creates a visual copy or representation of the implant's perimeter and dimensions on the bone surface. This allows the surgeon to see the exact size and placement of the implant before actual implantation, resolving the visibility issue without requiring complex imaging equipment.
Solution Approach 2:
The profiling guide is applied to the bone surface before the actual implant placement and resection. It预先 marks and visualizes the implant dimensions and location, allowing the surgeon to plan and adjust the procedure beforehand, thus improving measurement precision and avoiding impingement issues.
2Manufacturing precision
If current resection guide instrumentation is used, then the procedure can proceed, but it makes it difficult to visualize the location of resections with respect to other compartments
Solution Approach 1:
The profiling guide extends the visualization from a single point or line to a two-dimensional perimeter representation on the bone surface. This dimensional expansion allows the surgeon to see the entire implant footprint and its spatial relationship with adjacent compartments simultaneously, improving resection precision while maintaining clear visibility.
Solution Approach 2:
The profiling guide divides the implant visualization into distinct segments or outlines corresponding to different implant sizes and configurations. This segmentation allows the surgeon to clearly distinguish between different resection zones and their relationships to other knee compartments, preventing impingement.
3Reliability
If current instrumentation is used, then the surgery can be performed, but it increases the risk of impingement between compartments
Solution Approach 1:
The profiling guide allows the surgeon to预先 identify and mark areas that would lead to impingement. By visualizing the complete implant perimeter and its relationship to adjacent compartments before resection, the surgeon can adjust the resection plan to avoid harmful impingement, thus improving surgical reliability.
Data Source
AI summary
A bone resection guide, which includes a profiling guide. The profiling guide includes a first planar bone contact surface, a first guide surface and at least one outline corresponding to at least a portion of a first implant.