Wedge Osteotomy Saw Blade with Multi-Plane Cutting Teeth
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Solution Overview
Problem
Current surgical saw blades are inefficient in creating precise and reproducible wedge osteotomies, requiring multiple osteotomies that are time-consuming and lead to inconsistent wedge sizes and planar inaccuracies.
Innovation Solution
A surgical saw blade with a cutting slope and multiple rows of cutting teeth positioned along multiple planes on the cutting slope, allowing for precise and reproducible wedge osteotomies with a single pass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple osteotomies are made to resect a wedge of bone, then the osteotomy can be completed, but the procedure becomes time-consuming and creates inconsistent wedge sizes and planar inaccuracies
Solution Approach 1:
The cutting blade is segmented into multiple rows of cutting teeth (first row, second row, third row) arranged at different positions and orientations. Each row of teeth performs a portion of the cutting action, allowing the blade to create the complete wedge osteotomy in a single pass through the bone, eliminating the need for multiple separate osteotomy procedures
Solution Approach 2:
The cutting teeth are arranged in multiple rows that extend beyond the simple planar surface of the blade, creating a three-dimensional cutting configuration. This multi-row arrangement allows the blade to simultaneously engage and cut through bone at multiple depths and angles, achieving complex wedge geometry in a single cutting motion rather than requiring sequential planar cuts
2Manufacturing precision
If multiple osteotomies are made to resect a wedge of bone, then the osteotomy can be completed, but planar inaccuracies occur
Solution Approach 1:
The blade is divided into multiple rows of cutting teeth, with each row contributing to a specific portion of the wedge osteotomy. This segmentation allows precise control over the cutting path and wedge geometry, ensuring that each row of teeth creates its intended cut with high accuracy rather than relying on multiple separate blade passes
Solution Approach 2:
Different rows of cutting teeth are positioned and oriented to perform specific cutting functions. The first row, second row, and third row each have optimized tooth arrangements suited for their specific cutting zone, allowing each local region of the blade to excel at its particular cutting task while contributing to overall planar accuracy of the wedge osteotomy
3Manufacturing precision
If a single osteotomy is made with a traditional blade, then the procedure is quick, but it cannot create precise wedge osteotomies
Solution Approach 1:
Multiple cutting functions that would traditionally require separate osteotomy passes are merged into a single multi-row cutting blade. The first row, second row, and third row of cutting teeth work together in one cutting motion to accomplish what would otherwise require multiple sequential procedures, maintaining high productivity while achieving precise wedge geometry
Solution Approach 2:
The continuous cutting action of the oscillating blade engages all rows of cutting teeth simultaneously throughout the cutting stroke. This continuous engagement ensures that the complete wedge osteotomy is formed in one uninterrupted motion, eliminating the need to stop and reposition the blade between cuts, thereby maintaining high cutting efficiency while achieving precision
Data Source
AI summary
A surgical blade having an attachment base positioned at a proximal end and a wedge-shaped blade. The wedge-shaped blade includes a cutting tip having a first plurality of cutting teeth, which define a cutting edge along the distal end for starting an osteotomy. The wedge-shaped blade includes a second plurality of teeth positioned along rows. Each row is positioned at offset planes from adjacent rows along the wedge-shaped blade.