Oscillating Bone Resection Apparatus With Sliding Guide Plate
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Solution Overview
Problem
Current bone resection methods during knee arthroplasty require high precision and skill for additional resections of small magnitudes, placing a significant burden on surgeons due to the complexity of using bone cutting blades, chisels, or files.
Innovation Solution
A bone resection apparatus featuring a planar blade body with a tip saw blade that oscillates at high speed and a guide plate that slides between protruding and retracted positions to facilitate precise cutting, allowing for easy and accurate additional resections of resected bone surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional bone cutting blades, chisels, or files are used for additional resection, then bone resection can be performed, but high skill and precision are required which places a large burden on the physician
Solution Approach 1:
A guide plate is introduced as an intermediary device between the surgeon and the bone resection process. The guide plate includes a guide portion that contacts the resected bone surface and guides the blade body, making the resection process easier to control and more precise without requiring excessive surgical skill
Solution Approach 2:
The patent replaces traditional manual bone resection methods (chisels, files) with an oscillating blade system that automatically performs the cutting motion through high-speed oscillation, reducing the manual skill required while maintaining precision
2Manufacturing precision
If traditional methods are used for additional resection of small magnitudes, then bone can be resected, but high precision is required which places a large burden on the physician
Solution Approach 1:
The guide plate serves as a mediator that ensures precise positioning of the blade relative to the bone surface. The guide portion contacts the resected surface and the blade guide portion ensures the blade cuts at the correct depth and angle, achieving high precision while simplifying the surgical operation
Solution Approach 2:
The blade body performs high-speed oscillation to change the cutting parameters, enabling precise removal of small amounts of bone (increments on the order of 1 mm or less) while reducing the skill burden on the surgeon
3Manufacturing precision
If a guide plate is added to guide the blade, then cutting precision is improved, but device complexity increases
Solution Approach 1:
The guide plate and blade body are merged into a single integrated apparatus where the guide plate is detachably connected to the blade body. This allows the guiding function and cutting function to work together as one unified system, improving precision without creating separate complex devices
Solution Approach 2:
The guide plate is designed to be detachably connected to the blade body, allowing it to be attached when precision guidance is needed and detached when not needed. This dynamic configuration allows the system to adapt between simple and complex modes based on surgical requirements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and easy additional resections of small magnitudes on bone surfaces, reducing the complexity and skill required for surgeons, thereby improving the precision and efficiency of the bone resection process.
Implementation Method 1
a roughly planar blade body that has a tip saw blade and that carries out cutting of the bone with which the tip saw blade makes contact as a result of high-speed oscillation
Data Source
AI summary
A bone resection apparatus may comprise a roughly planar blade body that has a tip saw blade and that carries out cutting of bone with which the tip saw blade makes contact as a result of high-speed oscillation; and a guide plate which has a roughly planar tip guide portion, which is located at a top side of the blade body, and which is connected in such fashion as to permit sliding in a front-and-back direction relative to the blade body, the guide plate being capable of sliding between a protruding guide state in which the tip guide portion is made to protrude toward the tip to a point beyond the tip saw blade of the blade body to cover the tip saw blade and to guide a location in a thickness direction at which cutting by the tip saw blade occurs, and a retracted guide state in which the tip guide portion is retracted to a point behind the tip saw blade.