Segmented Osteotomy Blades for Wedge Shape Precision
Solution Overview
Problem
Traditional surgical cutting instruments are inefficient and inconsistent when performing wedge-shaped osteotomies, requiring multiple cuts and resulting in shape and size inconsistencies due to their design for making straight cuts.
Innovation Solution
A surgical instrument with a body featuring a top surface that includes multiple columns or rows of cutting blades with varying heights or slopes, allowing for a single pass to achieve a wedge-shaped osteotomy, constructed from sterilizable materials like stainless steel for precise bone cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional surgical cutting instruments are used to perform wedge-shaped osteotomies, then the instrument can make straight cuts, but multiple cuts and passes are required resulting in inconsistencies in shape and size of the osteotomy wedges
Solution Approach 1:
The surgical instrument divides the cutting function into multiple columns of cutting blades (e.g., first, second, third columns) with different heights or slopes. Each column of cutting blades is responsible for creating a specific portion of the wedge-shaped osteotomy, allowing the entire wedge shape to be created in a single pass rather than requiring multiple sequential cuts.
Solution Approach 2:
Different columns of cutting blades have different local properties (heights or slopes) to create the varying geometry of the wedge-shaped osteotomy. The first column may have a first height, the second column a second height, and the third column a third height, with each column's cutting blade configured to create the specific local geometry required at that position.
2Shape
If multiple osteotomies are performed to achieve a wedge-shaped osteotomy, then the desired shape can be approximated, but inconsistencies in shape and size occur across different patients
Solution Approach 1:
The cutting instrument is segmented into multiple columns of cutting blades, each with predetermined heights or slopes. This segmentation allows the instrument to create the complete wedge-shaped geometry in a single standardized pass, eliminating the variability introduced by performing multiple separate osteotomies with traditional instruments.
Solution Approach 2:
The invention changes the parameters of the cutting instrument itself (the heights and slopes of the cutting blades in different columns) to directly create the desired wedge shape. Instead of relying on the surgeon to create the wedge shape through multiple cuts, the instrument's blade parameters are pre-configured to produce the exact geometry needed.
Data Source
AI summary
Surgical instruments for performing wedge-shaped osteotomies are disclosed herein. One surgical instrument includes a body including a distal end, a proximal end, and a top surface. The top surface includes a slope extending upward and along a single plane from the distal end to the proximal end. Multiple columns of cutting blades positioned on the top surface and each of the cutting blades includes a respective uniform height that extends vertically along at least a portion of the slope. Another surgical instrument includes a top surface including a flat plane. Multiple columns of cutting blades are positioned on the top surface and the columns of cutting blades are spaced apart and positioned on at least a portion of the top surface. Each cutting blade extends horizontally along the top surface and includes an increasing slope extending upward and along a single plane from the distal end to the proximal end.