Interrupted Perimeter Filter for Bone Graft Separation
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Solution Overview
Problem
Existing technologies lack an efficient method to separate Demineralised Bone Matrix (DBM) particles from liquid mixtures in bone graft materials, leading to potential loss of DBM particles during liquid separation.
Innovation Solution
A filter device with a frame having an interrupted perimeter and a screen with pores sized smaller than DBM particles is designed to fit within a container. The filter allows liquid to be poured off while retaining DBM particles, and can be adapted to changes in container circumference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter device with pores is used to separate liquid from bone graft material, then liquid separation is achieved, but DBM particles may be lost through the pores
Solution Approach 1:
The filter device utilizes a screen with pores sized specifically to allow liquid passage while blocking DBM particles. The pore size is carefully selected to be smaller than DBM particles yet large enough to permit efficient liquid flow, resolving the contradiction between separation efficiency and particle retention.
2Strength
If a rigid filter frame is used to maintain structural integrity, then the filter holds its shape, but it cannot adapt to changes in container circumference
Solution Approach 1:
The filter frame incorporates an interrupted perimeter design with flexible segments that allow the frame to dynamically adjust and conform to changes in container circumference while maintaining sufficient structural integrity to support the filtering function.
Solution Approach 2:
The frame is divided into segmented sections along its perimeter, allowing independent movement and adjustment of each segment. This segmentation enables the frame to adapt to varying container dimensions while maintaining overall structural stability for effective filtering.
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 filter device effectively separates liquid from DBM-containing bone graft material, preventing the loss of DBM particles and allowing for secure retention of the bone graft material during transportation.
Implementation Method 1
a screen having a plurality of pores attached to one of the top and bottom surfaces. The pores are sized smaller than DBM particles to prevent the DBM particles from being separated from the bone graft material with the liquid
Data Source
AI summary
A filter device comprises a frame with interrupted perimeter having a top surface and a bottom surface and a screen having a plurality of pores attached to the frame. The filter device is designed to fit into an interior of a container. The container is configured to contain a mixture of demineralised bone matrix (DBM) containing bone graft material and liquid. The liquid mixture can be poured out of the container through the pores in the screen on the filter device and separated from the bone graft material while the DBM containing the bone graft material remains in the container. The pores are sized smaller than DBM particles to prevent the DBM particles from being separated from the bone graft material with the liquid.