Osteotomy System with Sliding Cutting Guide
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current orthopedic systems for bone osteotomy and stabilization lack precision in cutting and stabilization, particularly in achieving parallel cuts at ascertainable offset distances during bone shortening procedures.
Innovation Solution
A bone plate and cutting guide system where the cutting guide slides into the bone plate from the overhead direction, featuring tracks and guide blades for precise alignment and parallel cutting, with adjustable slots and screw holes for stabilization, allowing for accurate and controlled bone cuts and compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a cutting guide system is used to achieve parallel cutting planes at ascertainable offset distances, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The cutting guide is designed to nest within the bone plate structure, with the cutting guide inserting into a recess of the bone plate and engaging with tracks formed by ridges on the bone plate. This nesting arrangement integrates two separate functions (cutting guidance and bone stabilization) into a unified system, reducing overall complexity while maintaining precision.
Solution Approach 2:
The bone plate and cutting guide are designed as a pre-configured system where the cutting guide's position and orientation are predetermined by its engagement with the bone plate's tracks and ridges. This preliminary arrangement of cutting planes and offset distances eliminates the need for intraoperative measurement and adjustment, improving cutting precision while streamlining the surgical procedure.
2Reliability
If multiple slots and screw holes are provided for stabilization, then reliability of bone fixation is improved, but device complexity increases
Solution Approach 1:
The bone plate incorporates multiple distinct features (proximal slot, distal slot, multiple screw holes, and tracks) that can be independently utilized based on the specific surgical requirements. This segmentation allows surgeons to selectively engage only the necessary portions of the plate, achieving reliable fixation while maintaining flexibility in the application process.
Solution Approach 2:
The bone plate is designed as a multi-functional device that simultaneously provides cutting guidance (through tracks and ridges), bone stabilization (through slots and screw holes), and positioning (through the recess). This consolidation of multiple functions into a single device improves fixation reliability while reducing the number of separate components needed, thereby managing overall system complexity.
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
Disclosed is a bone cutting and shortening system and the method of using the same, the system comprising a bone plate and a cutting guide adapted to slidingly engage by inserting the cutting guide into the bone plate from the overhead direction, the cutting guide adapted to facilitate parallel cutting planes on a bone at precisely ascertainable offset distances, and the bone plate adapted to stabilize the shortened bone after cutting.