Bone Milling Apparatus with Segmented Cutting Teeth and Sieving Apertures
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bone mills fail to produce bone powder with a predictable particle size distribution and often damage the bone particles due to heat transfer during the milling process.
Innovation Solution
A milling apparatus with a base surface and a trimming member that includes cutting teeth and apertures of varying sizes and orientations, allowing for precise milling and sieving to achieve a predetermined particle size distribution, while minimizing heat transfer and damage to the material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional bone mills are used to mill bone material, then the milling process can be performed, but the bone particles are damaged by heat transfer and the particle size distribution is unpredictable
Solution Approach 1:
The milling process is segmented into multiple stages with different cutting teeth configurations. The base surface includes cutting teeth of varying sizes (first, second, third cutting teeth) that operate in sequence, allowing progressive size reduction while maintaining control over particle size distribution and minimizing heat buildup through staged processing.
Solution Approach 2:
Different regions of the milling apparatus have specialized functions: the base surface with its apertures provides sieving action, while specific cutting teeth are positioned and sized to perform particular cutting functions. The first cutting tooth handles initial reduction, the second cutting tooth refines particle size, and the third cutting tooth performs final sizing, with each element optimized for its local function.
2Manufacturing precision
If aggressive milling is used to achieve fine particle size, then particle size distribution can be controlled, but the bone particles suffer heat damage
Solution Approach 1:
The base surface with its apertures acts as an intermediary between the cutting teeth and the collected bone powder. As bone particles are cut by the various cutting teeth, they immediately encounter the apertures which provide a cooling effect and prevent excessive heat buildup while simultaneously sorting particles by size, allowing fine particles to pass through while larger particles continue to be processed.
3Manufacturing precision
If multiple cutting teeth of different sizes are used, then predictable particle size distribution is achieved, but the device complexity increases
Solution Approach 1:
Multiple functions are merged into a single integrated apparatus. The base surface combines cutting teeth of varying sizes, apertures for sieving, and collection functionality all in one structure. The trimming member with its ribs integrates support and additional cutting functionality. This consolidation achieves complex particle size distribution control without requiring multiple separate processing stages or equipment.
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 apparatus effectively mills material to a consistent particle size distribution, reducing heat-induced damage and ensuring the quality of bone powder for bone grafting applications.
Implementation Method 1
The base surface includes a first cutting tooth for milling the material... The trimming member includes a first rib for interfacing with the first cutting tooth to facilitate the milling of the material
Implementation Method 2
a first aperture of a predetermined diameter disposed adjacent the first cutting tooth so that material of less than the predetermined diameter may pass through the first aperture
Data Source
AI summary
An apparatus for milling material is disclosed. The apparatus may include a base surface. The base surface may include a first cutting tooth for milling the material. The base surface may include a first aperture of a predetermined diameter. The first aperture may be disposed adjacent the first cutting tooth so that material of less than the predetermined diameter may pass through the first aperture. The apparatus may include a trimming member. The trimming member may include a first rib for interfacing with the first cutting tooth to facilitate the milling of the material. The base surface and the trimming member may move relative to each other. The base surface and the trimming member may interface to mill material placed on the base surface.