Robot Cutting Sleeve Segmentation for Shaft Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cutting apparatuses using robots for artificial joint surgery face issues with shaft chattering and bending, leading to damage and interference with bone, muscle, and surrounding soft tissue, while attempts to improve rigidity by increasing sleeve diameter result in excessive outer diameter, exacerbating tissue damage.
Innovation Solution
A cutting apparatus with a shaft and sleeve system that includes a reinforcing wing unit to enhance rigidity against bending, minimizing sleeve thickness and preventing chattering, featuring a shaft insertion unit with support bearings and a rotatable wing section for improved stability and angular movement capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shaft is inserted into a long sleeve to prevent chattering and bending, then the stability and reliability of the shaft are improved, but severe friction is generated causing abrasion of the shaft and limitations in long-time use
Solution Approach 1:
The sleeve is divided into two distinct sections: a first sleeve section with a larger diameter that provides structural support and rigidity, and a second sleeve section with a smaller diameter that reduces friction during rotation. This segmentation allows the shaft to be supported where needed while minimizing contact friction in the rotating portion.
Solution Approach 2:
Different sections of the sleeve are given different diameters and functions - the first section provides structural support with larger diameter, while the second section minimizes friction with smaller diameter. This local differentiation of properties optimizes both support and rotational performance.
2Strength
If the sleeve diameter is increased to improve rigidity against bending, then the rigidity and stability of the shaft are improved, but the outer diameter of the cutting apparatus increases causing excessive damage and interference with bone, muscle and surrounding soft tissue
Solution Approach 1:
The sleeve is segmented into a first section with larger diameter for rigidity and a second section with smaller diameter for reduced tissue interference. This allows the apparatus to have sufficient structural strength while minimizing the outer diameter that contacts tissue during surgery.
Solution Approach 2:
The sleeve structure implements local quality by providing large diameter only where structural rigidity is needed, while the portion that contacts tissue has a smaller diameter to minimize damage and interference with surrounding soft tissue.
3Object-affected harmful factors
If the shaft is exposed as cantilever shape to reduce sleeve diameter and minimize tissue damage, then the outer diameter is reduced and tissue interference is minimized, but bending and chattering of the shaft are generated reducing safety
Solution Approach 1:
The sleeve is segmented into a support section with larger diameter that prevents shaft chattering and bending, and a reduced-diameter section that minimizes tissue interference. This segmentation allows both safety and minimal invasiveness to be achieved simultaneously.
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
The solution effectively reduces tissue damage and interference while maintaining rigidity, enhancing surgical safety and reducing recovery time by minimizing sleeve thickness and preventing deformation during high-speed operations.
Implementation Method 1
a plurality of support bearings installed inside the shaft insertion hole in order to support the shaft rotatably
Data Source
AI summary
The present invention aims to provide a cutting apparatus of a cutting system using a robot for reducing the damage and interference of a bone, a muscle and a surrounding soft tissue on operating and improving durability by minimizing the diameter of the sleeve while improving the rigidity against the bending and not generating the chattering of the shaft.